/* ===================================
   Grammar Checker - Modern CSS Styles
   Media Team Edition
   =================================== */

/* CSS Variables - Modern Teal & Coral Color Scheme (Light Theme) */
:root {
    --primary-gradient: linear-gradient(135deg, #00b4d8 0%, #0077b6 100%);
    --secondary-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    --success-gradient: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
    --error-gradient: linear-gradient(135deg, #e17055 0%, #d63031 100%);
    --dark-gradient: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);

    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-card-hover: rgba(255, 255, 255, 1);

    --text-primary: #1a1a2e;
    --text-secondary: #4a4a68;
    --text-muted: #8888a0;

    --accent-primary: #00b4d8;
    --accent-secondary: #0077b6;
    --accent-purple: #6c5ce7;
    --accent-pink: #fd79a8;
    --accent-green: #00b894;
    --accent-red: #e17055;
    --accent-orange: #f39c12;
    --accent-teal: #00cec9;

    --border-color: rgba(0, 180, 216, 0.2);
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-lg: 24px;

    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px rgba(0, 180, 216, 0.15);
    --shadow-glow-success: 0 0 30px rgba(0, 184, 148, 0.2);
    --shadow-glow-error: 0 0 30px rgba(225, 112, 85, 0.2);

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Poppins', sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    width: 150%;
    height: 150%;
    top: -25%;
    left: -25%;
    background:
        radial-gradient(circle at 20% 80%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 119, 182, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(0, 184, 148, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 60% 60%, rgba(225, 112, 85, 0.04) 0%, transparent 35%),
        #ffffff;
    animation: gradientMove 20s ease-in-out infinite;
}

@keyframes gradientMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(2%, 2%) rotate(1deg); }
    50% { transform: translate(-1%, 3%) rotate(-1deg); }
    75% { transform: translate(1%, -2%) rotate(0.5deg); }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 50px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}

.logo-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.logo-text h1 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.logo-text .subtitle {
    font-size: 0.875rem;
    color: var(--accent-teal);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.tagline {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}


/* Input Tabs */
.input-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.input-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.input-tab svg {
    width: 18px;
    height: 18px;
}

.input-tab:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.input-tab.active {
    color: white;
    background: var(--primary-gradient);
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* Camera Area */
.camera-area {
    text-align: center;
    padding: 40px 20px;
}

.camera-preview-container {
    width: 100%;
    max-width: 640px;
    margin: 0 auto 24px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
}

.camera-preview-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.camera-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-camera-action {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-camera-action:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-camera-action.capture {
    background: var(--success-gradient);
}

.btn-camera-action.stop {
    background: var(--error-gradient);
}

.btn-camera-action svg {
    width: 18px;
    height: 18px;
}

.camera-hint {
    margin-top: 16px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Paste Area */
.paste-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    outline: none;
}

.paste-area:hover,
.paste-area:focus {
    border-color: var(--accent-primary);
    background: rgba(0, 180, 216, 0.05);
}

.paste-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.paste-icon svg {
    width: 36px;
    height: 36px;
    color: var(--accent-primary);
}

.paste-area h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.paste-area p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.paste-area kbd {
    display: inline-block;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-family: monospace;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--accent-primary);
}

.paste-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: inline-block;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-radius: 20px;
}

/* URL Area */
.url-area {
    text-align: center;
    padding: 60px 40px;
}

.url-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.url-icon svg {
    width: 36px;
    height: 36px;
    color: var(--accent-primary);
}

.url-area h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.url-input-group {
    display: flex;
    max-width: 500px;
    margin: 0 auto 16px;
    gap: 8px;
}

.url-input {
    flex: 1;
    padding: 14px 20px;
    font-size: 0.875rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    outline: none;
    transition: var(--transition-fast);
}

.url-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.2);
}

.url-input::placeholder {
    color: var(--text-muted);
}

.btn-fetch-url {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
    white-space: nowrap;
}

.btn-fetch-url:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-fetch-url svg {
    width: 18px;
    height: 18px;
}

.url-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Responsive for tabs */
@media (max-width: 768px) {
    .input-tabs {
        gap: 6px;
    }

    .input-tab {
        padding: 10px 16px;
        font-size: 0.75rem;
    }

    .input-tab svg {
        width: 16px;
        height: 16px;
    }

    .url-input-group {
        flex-direction: column;
    }

    .btn-fetch-url {
        justify-content: center;
    }
}

/* Upload Section */
.upload-section {
    margin-bottom: 50px;
}

.upload-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.upload-container:hover {
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-normal);
}

.upload-area:hover {
    border-color: var(--accent-primary);
}

.upload-area:hover::before {
    opacity: 0.05;
}

.upload-area.drag-over {
    border-color: var(--accent-primary);
    border-style: solid;
    background: rgba(0, 180, 216, 0.08);
}

.upload-area.drag-over::before {
    opacity: 0.1;
}

.upload-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.upload-area:hover .upload-icon {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.upload-icon svg {
    width: 36px;
    height: 36px;
    color: var(--accent-primary);
}

.upload-area h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.file-types {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: inline-block;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-radius: 20px;
}

.multi-hint {
    display: block;
    margin-top: 12px;
    font-size: 0.875rem;
    color: var(--accent-teal);
    font-weight: 500;
}

/* ===== Dual upload grid (Images / Documents) ===== */
.upload-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}

.upload-zone {
    position: relative;
    padding: 44px 32px 36px;
    border-radius: 22px;
    background: #ffffff;
    border: 2px dashed var(--border-color);
    text-align: center;
    cursor: pointer;
    transition: all 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    overflow: hidden;
    isolation: isolate;
}

.upload-zone .zone-decoration {
    position: absolute;
    inset: 0;
    z-index: -1;
    opacity: 0.08;
    background:
        radial-gradient(circle at 80% 0%, var(--zone-accent, #00b4d8) 0%, transparent 40%),
        radial-gradient(circle at 0% 100%, var(--zone-accent2, #6c5ce7) 0%, transparent 40%);
    transition: opacity 0.32s ease;
}

.upload-zone:hover {
    transform: translateY(-4px);
    border-color: var(--zone-accent, var(--accent-primary));
    box-shadow: 0 24px 50px rgba(8, 14, 28, 0.12);
}

.upload-zone:hover .zone-decoration {
    opacity: 0.18;
}

.upload-zone.drag-over {
    border-color: var(--zone-accent, var(--accent-primary));
    border-style: solid;
    transform: translateY(-2px);
    box-shadow: 0 0 0 6px var(--zone-accent-soft, rgba(0, 180, 216, 0.18)),
                0 24px 50px rgba(8, 14, 28, 0.18);
}

.upload-zone.drag-over .zone-decoration {
    opacity: 0.3;
}

/* Image zone palette */
.upload-zone-image {
    --zone-accent: #00b4d8;
    --zone-accent2: #0077b6;
    --zone-accent-soft: rgba(0, 180, 216, 0.18);
}

/* Document zone palette */
.upload-zone-doc {
    --zone-accent: #e17055;
    --zone-accent2: #6c5ce7;
    --zone-accent-soft: rgba(225, 112, 85, 0.18);
}

.upload-zone .zone-icon {
    width: 78px;
    height: 78px;
    margin: 0 auto 18px;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--zone-accent), var(--zone-accent2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18),
                inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

.upload-zone:hover .zone-icon {
    transform: translateY(-4px) rotate(-2deg);
}

.upload-zone .zone-icon svg {
    width: 36px;
    height: 36px;
    color: #fff;
}

.upload-zone .zone-kicker {
    display: inline-block;
    font-size: 0.66rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    color: var(--zone-accent);
    margin-bottom: 6px;
    padding: 4px 12px;
    background: var(--zone-accent-soft);
    border-radius: 20px;
}

.upload-zone h3 {
    font-family: var(--font-display);
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px;
    letter-spacing: -0.3px;
}

.upload-zone .zone-sub {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0 0 18px;
}

.upload-zone .zone-formats {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 16px;
}

.format-pill {
    display: inline-flex;
    align-items: center;
    padding: 5px 13px;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.format-pill-pdf {
    background: linear-gradient(135deg, rgba(225, 112, 85, 0.15), rgba(214, 48, 49, 0.08));
    color: #d63031;
    border-color: rgba(225, 112, 85, 0.3);
}

.format-pill-docx {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(162, 155, 254, 0.08));
    color: #6c5ce7;
    border-color: rgba(108, 92, 231, 0.3);
}

.upload-zone .zone-note {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.2px;
}

@media (max-width: 720px) {
    .upload-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .upload-zone {
        padding: 32px 24px;
    }
    .upload-zone h3 {
        font-size: 1.2rem;
    }
}

/* Preview Area */
.preview-area {
    margin-top: 30px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.preview-header h4 {
    font-size: 1rem;
    color: var(--text-primary);
}

.btn-clear-all {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-red);
    background: rgba(244, 92, 67, 0.15);
    border: 1px solid rgba(244, 92, 67, 0.3);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-clear-all:hover {
    background: var(--accent-red);
    color: white;
    border-color: var(--accent-red);
}

.btn-clear-all svg {
    width: 14px;
    height: 14px;
}

/* Preview Grid for Multiple Images */
.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.preview-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.preview-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-item .remove-item {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

.preview-item:hover .remove-item {
    opacity: 1;
}

.preview-item .remove-item:hover {
    background: var(--accent-red);
}

.preview-item .remove-item svg {
    width: 14px;
    height: 14px;
    color: white;
}

.preview-item .file-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    font-size: 0.7rem;
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.preview-item .image-meta {
    position: absolute;
    bottom: 26px;
    left: 0;
    right: 0;
    padding: 2px 8px;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* File meta chips on result cards */
.file-meta {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin: 4px 0 6px 0;
}

.file-meta .meta-chip {
    display: inline-block;
    padding: 2px 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Image + mistake marker overlay */
.image-marker-wrapper {
    position: relative;
    display: inline-block;
    line-height: 0;
    max-width: 100%;
}

.modal-image-container .image-marker-wrapper img {
    display: block;
    max-width: 100%;
    max-height: calc(100vh - 220px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
}

.markers-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.mistake-marker {
    position: absolute;
    box-sizing: border-box;
    border: 2px solid var(--accent-red, #f45c43);
    background: rgba(244, 92, 67, 0.12);
    border-radius: 4px;
    pointer-events: auto;
    cursor: help;
    animation: markerPulse 2s ease-in-out infinite;
    min-width: 12px;
    min-height: 12px;
}

.mistake-marker.spelling { border-color: #ff9a44; background: rgba(255, 154, 68, 0.14); }
.mistake-marker.grammar  { border-color: #f45c43; background: rgba(244, 92, 67, 0.14); }
.mistake-marker.punctuation { border-color: #e94fa1; background: rgba(233, 79, 161, 0.14); }

.mistake-marker .marker-number {
    position: absolute;
    top: -10px;
    left: -10px;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    background: var(--accent-red, #f45c43);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.mistake-marker.spelling .marker-number { background: #ff9a44; }
.mistake-marker.punctuation .marker-number { background: #e94fa1; }

.mistake-marker .marker-label {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 4px;
    padding: 2px 8px;
    background: rgba(0, 0, 0, 0.85);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    transition: opacity 0.15s ease;
    pointer-events: none;
}

.mistake-marker:hover .marker-label {
    opacity: 1;
}

@keyframes markerPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(244, 92, 67, 0.5); }
    50%      { box-shadow: 0 0 0 6px rgba(244, 92, 67, 0); }
}

/* ===== Unlocated mistakes strip (for corrections without a bbox) ===== */
.unlocated-strip {
    position: absolute;
    top: 10px;
    right: 10px;
    max-width: calc(100% - 20px);
    padding: 10px 12px;
    background: rgba(15, 23, 42, 0.88);
    backdrop-filter: blur(10px) saturate(140%);
    -webkit-backdrop-filter: blur(10px) saturate(140%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    pointer-events: auto;
    z-index: 8;
    animation: unlocatedSlideIn 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes unlocatedSlideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.unlocated-strip .unlocated-header {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.62rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 8px;
}

.unlocated-strip .unlocated-header svg {
    width: 12px;
    height: 12px;
    color: #f39c12;
}

.unlocated-strip .unlocated-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    max-height: 140px;
    overflow-y: auto;
    padding-right: 2px;
}

.unlocated-strip .unlocated-badges::-webkit-scrollbar { width: 6px; }
.unlocated-strip .unlocated-badges::-webkit-scrollbar-track { background: transparent; }
.unlocated-strip .unlocated-badges::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 6px; }

.unlocated-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px 4px 4px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #fff;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    max-width: 200px;
}

.unlocated-badge:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.unlocated-badge .unlocated-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-red);
    color: #fff;
    font-size: 0.66rem;
    font-weight: 800;
    flex-shrink: 0;
}

.unlocated-badge.spelling .unlocated-num { background: #f39c12; }
.unlocated-badge.grammar .unlocated-num { background: var(--accent-red); }
.unlocated-badge.punctuation .unlocated-num { background: #e84393; }

.unlocated-badge .unlocated-word {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 160px;
}

.preview-item .item-index {
    position: absolute;
    top: 8px;
    left: 8px;
    width: 24px;
    height: 24px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
}

.preview-item .preview-badge {
    position: absolute;
    top: 8px;
    left: 40px;
    padding: 3px 8px;
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: #fff;
    font-size: 0.6rem;
    font-weight: 700;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    box-shadow: 0 2px 6px rgba(0, 184, 148, 0.3);
    z-index: 2;
}

/* ===== File-type badges on preview tiles ===== */
.preview-item .kind-badge {
    position: absolute;
    top: 8px;
    right: 44px;
    padding: 3px 9px;
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    border-radius: 10px;
    color: #fff;
    z-index: 3;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.kind-badge.kind-image { background: linear-gradient(135deg, #00b4d8, #0077b6); }
.kind-badge.kind-pdf   { background: linear-gradient(135deg, #e17055, #d63031); }
.kind-badge.kind-docx  { background: linear-gradient(135deg, #6c5ce7, #a29bfe); }

.kind-chip-pdf  { background: linear-gradient(135deg, rgba(225, 112, 85, 0.15), rgba(214, 48, 49, 0.1)) !important; color: #d63031 !important; border-color: rgba(225, 112, 85, 0.3) !important; }
.kind-chip-docx { background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(162, 155, 254, 0.1)) !important; color: #6c5ce7 !important; border-color: rgba(108, 92, 231, 0.3) !important; }

/* DOCX preview tile (no image thumbnail) */
.preview-item-doc {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.08), rgba(162, 155, 254, 0.04));
}

.preview-item-doc .docx-icon-wrap {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c5ce7;
}

.preview-item-doc .docx-icon-wrap svg {
    width: 46%;
    height: 46%;
    opacity: 0.65;
}

/* DOCX thumbnail in result cards */
.image-result-thumbnail.docx-thumb {
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.12), rgba(162, 155, 254, 0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6c5ce7;
}

.image-result-thumbnail.docx-thumb svg {
    width: 60%;
    height: 60%;
    opacity: 0.85;
}

/* DOCX text viewer inside the modal */
.docx-viewer {
    flex: 1;
    padding: 28px 32px;
    overflow-y: auto;
    background: #fdfdfe;
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--text-primary);
    max-height: 100%;
}

.docx-viewer::-webkit-scrollbar { width: 10px; }
.docx-viewer::-webkit-scrollbar-thumb { background: rgba(108, 92, 231, 0.35); border-radius: 8px; }
.docx-viewer::-webkit-scrollbar-thumb:hover { background: #6c5ce7; }

.docx-viewer .docx-para {
    margin: 0 0 14px;
    color: var(--text-primary);
}

.docx-viewer .docx-highlight {
    background: rgba(225, 112, 85, 0.18);
    color: var(--accent-red);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: underline wavy var(--accent-red);
    text-underline-offset: 3px;
}

.docx-viewer .docx-empty {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 40px;
}

/* Mammoth-rendered DOCX — preserve document-like appearance */
.docx-viewer .docx-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

.docx-viewer .docx-loading .spinner {
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(108, 92, 231, 0.25);
    border-top-color: #6c5ce7;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.docx-viewer .docx-rendered {
    max-width: 720px;
    margin: 0 auto;
    padding: 32px 44px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 6px 24px rgba(8, 14, 28, 0.06);
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 0.98rem;
    line-height: 1.7;
    color: #1a202c;
}

.docx-viewer .docx-rendered h1,
.docx-viewer .docx-rendered .docx-title {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 700;
    color: #1a202c;
    margin: 0 0 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid #6c5ce7;
}

.docx-viewer .docx-rendered .docx-subtitle {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin: 0 0 24px;
    font-style: italic;
}

.docx-viewer .docx-rendered h2 {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: #2d3748;
    margin: 28px 0 12px;
}

.docx-viewer .docx-rendered h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: #2d3748;
    margin: 22px 0 10px;
}

.docx-viewer .docx-rendered h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: #2d3748;
    margin: 18px 0 8px;
}

.docx-viewer .docx-rendered p {
    margin: 0 0 14px;
}

.docx-viewer .docx-rendered ul,
.docx-viewer .docx-rendered ol {
    margin: 0 0 16px;
    padding-left: 28px;
}

.docx-viewer .docx-rendered li {
    margin: 6px 0;
}

.docx-viewer .docx-rendered strong {
    color: #1a202c;
    font-weight: 700;
}

.docx-viewer .docx-rendered em {
    color: #2d3748;
}

.docx-viewer .docx-rendered table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.9rem;
}

.docx-viewer .docx-rendered table th,
.docx-viewer .docx-rendered table td {
    border: 1px solid #e2e8f0;
    padding: 10px 14px;
    text-align: left;
}

.docx-viewer .docx-rendered table th {
    background: #f7fafc;
    font-weight: 700;
}

.docx-viewer .docx-rendered img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 16px 0;
}

.docx-viewer .docx-rendered a {
    color: #6c5ce7;
    text-decoration: underline;
}

.docx-viewer .docx-rendered .docx-highlight {
    background: rgba(225, 112, 85, 0.22);
    color: var(--accent-red);
    padding: 1px 5px;
    border-radius: 3px;
    font-weight: 600;
    text-decoration: underline wavy var(--accent-red);
    text-underline-offset: 3px;
}

.btn-remove {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(244, 92, 67, 0.2);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-remove:hover {
    background: var(--accent-red);
}

.btn-remove svg {
    width: 18px;
    height: 18px;
    color: var(--accent-red);
    transition: var(--transition-fast);
}

.btn-remove:hover svg {
    color: white;
}

.preview-image-container {
    width: 100%;
    max-height: 400px;
    overflow: hidden;
    border-radius: var(--border-radius-sm);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.file-info {
    margin-top: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Analyze Button */
.btn-analyze {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    max-width: 300px;
    margin: 30px auto 0;
    padding: 16px 32px;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-analyze::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition-slow);
}

.btn-analyze:hover:not(:disabled)::before {
    left: 100%;
}

.btn-analyze:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-analyze:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-analyze:active:not(:disabled) {
    transform: translateY(-1px);
}

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results Section */
.results-section {
    animation: fadeIn 0.5s ease;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.results-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-download {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
    background: var(--success-gradient);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-download svg {
    width: 18px;
    height: 18px;
}

/* Results Container for Multiple Images */
.results-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.image-result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.image-result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-normal);
}

.image-result-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md), 0 0 30px rgba(0, 180, 216, 0.1);
    transform: translateY(-2px);
}

.image-result-card:hover::before {
    opacity: 1;
}

.image-result-card.has-errors {
    border-color: rgba(225, 112, 85, 0.4);
    background: rgba(225, 112, 85, 0.05);
}

.image-result-card.has-errors::before {
    background: var(--error-gradient);
    opacity: 1;
}

.image-result-card.has-errors:hover {
    border-color: var(--accent-red);
    box-shadow: var(--shadow-md), var(--shadow-glow-error);
}

.image-result-card.has-errors .result-index {
    background: var(--error-gradient);
}

.image-result-card.no-errors {
    border-color: rgba(0, 184, 148, 0.4);
    background: rgba(0, 184, 148, 0.05);
}

.image-result-card.no-errors::before {
    background: var(--success-gradient);
    opacity: 1;
}

.image-result-card.no-errors:hover {
    border-color: var(--accent-green);
    box-shadow: var(--shadow-md), var(--shadow-glow-success);
}

.image-result-card.no-errors .result-index {
    background: var(--success-gradient);
}

.image-result-card.no-text {
    border-color: rgba(253, 203, 110, 0.4);
    background: rgba(253, 203, 110, 0.05);
}

.image-result-card.no-text::before {
    background: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
    opacity: 1;
}

.image-result-card.no-text .result-index {
    background: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
}

.image-result-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.image-result-thumbnail {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.image-result-thumbnail:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.image-result-thumbnail::after {
    content: '🔍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    opacity: 0;
    transition: var(--transition-fast);
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.image-result-thumbnail:hover::after {
    opacity: 1;
}

.image-result-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-fast);
}

.image-result-thumbnail:hover img {
    filter: brightness(0.7);
}

.image-result-info {
    flex: 1;
}

.image-result-info h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.image-result-info h3 .result-index {
    width: 28px;
    height: 28px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
}

.image-result-info .file-name-result {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.image-result-score {
    text-align: center;
}

.mini-score {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mini-score-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.image-result-stats {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.mini-stat {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 0.75rem;
}

.mini-stat span {
    font-weight: 700;
    margin-right: 4px;
}

.mini-stat.spelling span { color: var(--accent-orange); }
.mini-stat.grammar span { color: var(--accent-red); }
.mini-stat.punctuation span { color: var(--accent-pink); }

/* Score Card */
.score-card {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.score-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
}

.score-circle {
    position: relative;
    width: 160px;
    height: 160px;
}

.score-circle svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-bg {
    fill: none;
    stroke: var(--bg-secondary);
    stroke-width: 8;
}

.score-progress {
    fill: none;
    stroke: url(#scoreGradient);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 1s ease;
}

.score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-value span:first-child {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    line-height: 1;
}

.score-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.score-details {
    flex: 1;
    min-width: 280px;
}

.grade-badge {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    padding: 8px 24px;
    background: var(--primary-gradient);
    border-radius: var(--border-radius-sm);
    margin-bottom: 20px;
}

.grade-badge.grade-a { background: var(--success-gradient); }
.grade-badge.grade-b { background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%); }
.grade-badge.grade-c { background: linear-gradient(135deg, #f5af19 0%, #f12711 100%); }
.grade-badge.grade-d { background: linear-gradient(135deg, #f45c43 0%, #eb3349 100%); }
.grade-badge.grade-f { background: var(--error-gradient); }

.error-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    min-width: 100px;
}

.stat-count {
    display: block;
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.stat-item.spelling .stat-count { color: var(--accent-orange); }
.stat-item.grammar .stat-count { color: var(--accent-red); }
.stat-item.punctuation .stat-count { color: var(--accent-pink); }

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Feedback Card */
.feedback-card {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

.feedback-card h3 {
    font-size: 1rem;
    color: var(--accent-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.feedback-card h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.feedback-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Text Comparison */
.text-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 30px;
}

.text-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 1rem;
    color: var(--text-primary);
}

.badge {
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-original {
    background: rgba(244, 92, 67, 0.2);
    color: var(--accent-red);
}

.badge-corrected {
    background: rgba(56, 239, 125, 0.2);
    color: var(--accent-green);
}

.panel-content {
    padding: 20px;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
    min-height: 100px;
    max-height: 400px;
    overflow-y: auto;
}

/* Highlighted text */
.highlight-error {
    background: rgba(244, 92, 67, 0.3);
    color: var(--accent-red);
    padding: 2px 4px;
    border-radius: 4px;
    text-decoration: line-through;
}

.highlight-correction {
    background: rgba(56, 239, 125, 0.3);
    color: var(--accent-green);
    padding: 2px 4px;
    border-radius: 4px;
}

/* Mistakes Section */
.mistakes-section h3 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.mistakes-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mistake-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.mistake-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.mistake-type {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    max-width: 140px;
    width: auto;
    padding: 8px 12px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border-radius: var(--border-radius-sm);
    text-align: center;
    word-break: break-word;
    line-height: 1.3;
}

.mistake-type.spelling {
    background: rgba(245, 175, 25, 0.2);
    color: var(--accent-orange);
}

.mistake-type.grammar {
    background: rgba(244, 92, 67, 0.2);
    color: var(--accent-red);
}

.mistake-type.punctuation {
    background: rgba(240, 147, 251, 0.2);
    color: var(--accent-pink);
}

/* Combined error types */
.mistake-type.spelling-punctuation,
.mistake-type.spelling\/punctuation {
    background: linear-gradient(135deg, rgba(245, 175, 25, 0.2) 0%, rgba(240, 147, 251, 0.2) 100%);
    color: var(--accent-orange);
}

.mistake-type.punctuation-grammar,
.mistake-type.punctuation\/grammar,
.mistake-type.grammar-punctuation,
.mistake-type.grammar\/punctuation {
    background: linear-gradient(135deg, rgba(240, 147, 251, 0.2) 0%, rgba(244, 92, 67, 0.2) 100%);
    color: var(--accent-pink);
}

.mistake-type.spelling-grammar,
.mistake-type.spelling\/grammar,
.mistake-type.grammar-spelling,
.mistake-type.grammar\/spelling {
    background: linear-gradient(135deg, rgba(245, 175, 25, 0.2) 0%, rgba(244, 92, 67, 0.2) 100%);
    color: var(--accent-orange);
}

.mistake-content {
    flex: 1;
}

.mistake-correction {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.mistake-original {
    color: var(--accent-red);
    text-decoration: line-through;
    font-weight: 500;
}

.mistake-arrow {
    color: var(--text-muted);
}

.mistake-fixed {
    color: var(--accent-green);
    font-weight: 600;
}

.mistake-explanation {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* No Text Section */
.no-text-section {
    animation: fadeIn 0.5s ease;
}

.no-text-card {
    text-align: center;
    padding: 60px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.no-text-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: rgba(245, 175, 25, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.no-text-icon svg {
    width: 40px;
    height: 40px;
    color: var(--accent-orange);
}

.no-text-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.no-text-card p {
    color: var(--text-secondary);
    max-width: 400px;
    margin: 0 auto;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer .powered-by {
    margin-top: 8px;
    color: var(--accent-teal);
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transform: translateX(calc(100% + 40px));
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-color: var(--accent-green);
}

.notification.error {
    border-color: var(--accent-red);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.notification-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification.success .notification-icon {
    background: var(--accent-green);
}

.notification.error .notification-icon {
    background: var(--accent-red);
}

.notification-message {
    color: var(--text-primary);
    font-size: 0.875rem;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-teal);
}

/* Responsive Design */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
    .container {
        padding: 30px 20px;
    }

    .upload-container {
        padding: 30px;
    }

    .image-result-header {
        flex-wrap: wrap;
        gap: 15px;
    }

    .image-result-score {
        order: 3;
        width: 100%;
        display: flex;
        align-items: center;
        gap: 10px;
        justify-content: flex-start;
        text-align: left;
        padding-top: 15px;
        border-top: 1px solid var(--border-color);
    }

    .mini-score {
        font-size: 1.5rem;
    }

    .btn-view-image {
        order: 4;
    }
}

/* Tablets */
@media (max-width: 768px) {
    .container {
        padding: 20px 16px;
    }

    .logo {
        flex-direction: column;
        gap: 12px;
    }

    .logo-text h1 {
        font-size: 1.75rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .upload-container {
        padding: 20px;
    }

    .upload-area {
        padding: 40px 20px;
    }

    .upload-icon {
        width: 60px;
        height: 60px;
    }

    .upload-icon svg {
        width: 28px;
        height: 28px;
    }

    /* Preview grid responsive */
    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 12px;
    }

    .preview-item .item-index {
        width: 20px;
        height: 20px;
        font-size: 0.6rem;
    }

    .preview-item .file-name {
        font-size: 0.6rem;
        padding: 6px;
    }

    /* Results responsive */
    .image-result-card {
        padding: 20px;
    }

    .image-result-header {
        gap: 12px;
    }

    .image-result-thumbnail {
        width: 60px;
        height: 60px;
    }

    .image-result-info h3 {
        font-size: 0.95rem;
        flex-wrap: wrap;
    }

    .image-result-info h3 .result-index {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    .image-result-stats {
        gap: 8px;
    }

    .mini-stat {
        padding: 6px 12px;
        font-size: 0.7rem;
    }

    .score-card {
        padding: 24px;
        gap: 24px;
    }

    .score-circle {
        width: 120px;
        height: 120px;
    }

    .score-value span:first-child {
        font-size: 2rem;
    }

    .error-stats {
        justify-content: center;
    }

    .stat-item {
        min-width: 80px;
        padding: 12px 16px;
    }

    .mistake-item {
        flex-direction: column;
        gap: 12px;
    }

    .mistake-type {
        width: fit-content;
    }

    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .results-header h2 {
        font-size: 1.5rem;
    }

    .btn-download {
        width: 100%;
        justify-content: center;
    }

    .text-comparison {
        grid-template-columns: 1fr;
    }

    .feedback-card {
        padding: 16px;
    }

    .notification {
        right: 10px;
        left: 10px;
        transform: translateY(-100px);
    }

    .notification.show {
        transform: translateY(0);
    }
}

/* Mobile phones */
@media (max-width: 480px) {
    .container {
        padding: 15px 12px;
    }

    .header {
        margin-bottom: 30px;
    }

    .logo-icon {
        width: 50px;
        height: 50px;
    }

    .logo-icon svg {
        width: 26px;
        height: 26px;
    }

    .logo-text h1 {
        font-size: 1.5rem;
    }

    .logo-text .subtitle {
        font-size: 0.75rem;
    }

    .tagline {
        font-size: 0.875rem;
    }

    .upload-container {
        padding: 15px;
    }

    .upload-area {
        padding: 30px 15px;
    }

    .upload-area h3 {
        font-size: 1rem;
    }

    .upload-area p {
        font-size: 0.875rem;
    }

    .file-types {
        font-size: 0.65rem;
        padding: 6px 12px;
    }

    .multi-hint {
        font-size: 0.75rem;
    }

    /* Preview grid mobile */
    .preview-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 10px;
    }

    .preview-header h4 {
        font-size: 0.875rem;
    }

    .btn-clear-all {
        padding: 6px 12px;
        font-size: 0.65rem;
    }

    /* Results mobile */
    .image-result-card {
        padding: 15px;
    }

    .image-result-thumbnail {
        width: 50px;
        height: 50px;
    }

    .image-result-info h3 {
        font-size: 0.85rem;
    }

    .image-result-info .file-name-result {
        font-size: 0.75rem;
    }

    .btn-view-image {
        padding: 6px 12px;
        font-size: 0.65rem;
        width: 100%;
        justify-content: center;
        margin-top: 10px;
    }

    .image-result-stats {
        flex-wrap: wrap;
        justify-content: center;
    }

    .mini-stat {
        flex: 1;
        min-width: calc(50% - 8px);
        text-align: center;
        justify-content: center;
    }

    .panel-header {
        padding: 12px 15px;
    }

    .panel-header h3 {
        font-size: 0.875rem;
    }

    .panel-content {
        padding: 15px;
        font-size: 0.875rem;
    }

    .mistakes-section h3 {
        font-size: 1rem;
    }

    .mistake-item {
        padding: 15px;
    }

    .mistake-type {
        font-size: 0.6rem;
        padding: 6px 10px;
        min-width: 70px;
        max-width: 120px;
    }

    .mistake-correction {
        font-size: 0.875rem;
    }

    .mistake-explanation {
        font-size: 0.75rem;
    }

    .btn-analyze {
        width: 100%;
        max-width: none;
        padding: 14px 24px;
        font-size: 1rem;
    }

    .footer {
        padding: 30px 0;
        margin-top: 40px;
    }

    .footer p {
        font-size: 0.75rem;
    }
}

/* Extra small devices */
@media (max-width: 360px) {
    .preview-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .image-result-thumbnail {
        width: 45px;
        height: 45px;
    }

    .mini-stat {
        min-width: 100%;
    }
}

/* Print Styles for Report */
@media print {
    .bg-animation,
    .upload-section,
    .btn-download,
    .btn-remove,
    .notification {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .container {
        max-width: 100%;
        padding: 20px;
    }

    .score-card,
    .feedback-card,
    .text-panel,
    .mistake-item {
        background: white;
        border: 1px solid #ddd;
        break-inside: avoid;
    }

    .score-value span:first-child,
    .results-header h2 {
        -webkit-text-fill-color: #00b4d8;
        color: #00b4d8;
    }
}

/* ===== Settings button (header) ===== */
.btn-settings {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    backdrop-filter: blur(8px);
}

.btn-settings:hover {
    background: #fff;
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-settings svg {
    width: 16px;
    height: 16px;
}

.btn-settings .settings-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 800;
    border-radius: 10px;
    margin-left: 4px;
}

/* ===== Settings modal ===== */
.settings-modal {
    position: fixed;
    inset: 0;
    z-index: 2100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.settings-modal.active {
    display: flex;
}

.settings-overlay {
    position: absolute;
    inset: 0;
    background: rgba(8, 14, 28, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    cursor: pointer;
}

.settings-card {
    position: relative;
    width: 100%;
    max-width: 560px;
    background: linear-gradient(180deg, #fff 0%, #f6f9fc 100%);
    border-radius: 20px;
    box-shadow: 0 30px 80px rgba(8, 14, 28, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.4);
    overflow: hidden;
    animation: modalPop 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.settings-header {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(108, 92, 231, 0.06));
    border-bottom: 1px solid var(--border-color);
}

.settings-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(0, 180, 216, 0.3);
}

.settings-icon svg {
    width: 22px;
    height: 22px;
    color: #fff;
}

.settings-title-group {
    flex: 1;
    min-width: 0;
}

.settings-kicker {
    display: block;
    font-size: 0.66rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--accent-primary);
    margin-bottom: 2px;
}

.settings-title-group h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.settings-close {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border-color);
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-fast);
}

.settings-close:hover {
    background: var(--accent-red);
}

.settings-close:hover svg {
    color: #fff;
}

.settings-close svg {
    width: 18px;
    height: 18px;
    color: var(--text-primary);
}

.settings-body {
    padding: 24px;
    overflow-y: auto;
}

.settings-description {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0 0 18px;
}

.settings-input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
}

.settings-input {
    flex: 1;
    padding: 12px 16px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition-fast);
}

.settings-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.12);
}

.settings-add-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 18px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    box-shadow: 0 6px 16px rgba(0, 180, 216, 0.3);
}

.settings-add-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(0, 180, 216, 0.4);
}

.settings-add-btn svg {
    width: 16px;
    height: 16px;
}

.settings-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 60px;
    padding: 14px;
    background: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
}

.settings-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 6px 6px 14px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.settings-chip:hover {
    border-color: var(--accent-primary);
}

.settings-chip button {
    width: 22px;
    height: 22px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.settings-chip button:hover {
    background: var(--accent-red);
}

.settings-chip button:hover svg {
    color: #fff;
}

.settings-chip button svg {
    width: 12px;
    height: 12px;
    color: var(--text-muted);
}

.settings-empty {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
    margin: auto;
    align-self: center;
}

/* ===== Results actions (retry + download) ===== */
.results-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn-retry {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.15), rgba(230, 126, 34, 0.1));
    border: 1px solid rgba(243, 156, 18, 0.3);
    color: #e67e22;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
}

.btn-retry:hover {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 8px 20px rgba(243, 156, 18, 0.3);
}

.btn-retry svg {
    width: 14px;
    height: 14px;
}

/* ===== Result action group (view + annotate) ===== */
.result-action-group {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
}

.btn-annotate {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 0.72rem;
    font-weight: 700;
    color: #00b894;
    background: rgba(0, 184, 148, 0.12);
    border: 1px solid rgba(0, 184, 148, 0.3);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
    font-family: inherit;
}

.btn-annotate:hover {
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: #fff;
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 184, 148, 0.3);
}

.btn-annotate svg {
    width: 14px;
    height: 14px;
}

/* View Image Button */
.btn-view-image {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(0, 180, 216, 0.15);
    border: 1px solid rgba(0, 180, 216, 0.3);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn-view-image:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.btn-view-image svg {
    width: 14px;
    height: 14px;
}

/* Image Modal */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(8, 14, 28, 0.55);
    backdrop-filter: blur(10px) saturate(140%);
    -webkit-backdrop-filter: blur(10px) saturate(140%);
    cursor: pointer;
}

.modal-content {
    position: relative;
    width: 92%;
    max-width: 1440px;
    height: 94%;
    margin: auto;
    background: linear-gradient(180deg, #ffffff 0%, #f4f7fb 100%);
    display: flex;
    flex-direction: column;
    z-index: 1;
    animation: modalPop 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    padding: 0;
    box-shadow: 0 30px 80px rgba(8, 14, 28, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    overflow: hidden;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.image-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* ----- Modal top bar ----- */
.modal-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 28px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.10) 0%, rgba(108, 92, 231, 0.08) 50%, rgba(253, 121, 168, 0.06) 100%);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    position: relative;
}

.modal-top-bar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 28px;
    right: 28px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0.4;
}

.modal-brand {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
    flex: 1;
}

.modal-brand-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 10px 24px rgba(0, 180, 216, 0.35), 0 0 0 4px rgba(0, 180, 216, 0.08);
    position: relative;
}

.modal-brand-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.25), transparent 60%);
    pointer-events: none;
}

.modal-brand-icon svg {
    width: 26px;
    height: 26px;
    color: #fff;
}

.modal-brand-texts {
    min-width: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.modal-kicker {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--accent-primary);
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    margin: 0;
    line-height: 1.25;
}

.modal-top-right {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.modal-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.modal-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.73rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.2px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.modal-chip svg {
    width: 13px;
    height: 13px;
    color: var(--accent-primary);
}

.modal-chip.chip-format {
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.14), rgba(108, 92, 231, 0.1));
    color: var(--accent-secondary);
    border-color: rgba(0, 180, 216, 0.3);
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* ----- Modal body ----- */
.modal-body {
    display: flex;
    flex: 1;
    gap: 20px;
    padding: 20px;
    min-height: 0;
    overflow: hidden;
}

.modal-left {
    flex: 1.3;
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    min-width: 0;
}

.modal-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    max-width: 520px;
}

.modal-right-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 4px;
    scroll-behavior: smooth;
}

.modal-right-scroll::-webkit-scrollbar { width: 8px; }
.modal-right-scroll::-webkit-scrollbar-track { background: transparent; }
.modal-right-scroll::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.1); border-radius: 8px; }
.modal-right-scroll::-webkit-scrollbar-thumb:hover { background: var(--accent-primary); }

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    background: linear-gradient(180deg, rgba(248, 250, 253, 1), rgba(248, 250, 253, 0.5));
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.modal-section-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.modal-section-header h3 {
    flex: 0 0 auto;
}

.modal-tools {
    display: flex;
    gap: 4px;
    background: #fff;
    padding: 4px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.modal-tools .tool-btn {
    padding: 5px 12px;
    font-size: 0.72rem;
    font-weight: 600;
    background: transparent;
    border: none;
    border-radius: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
}

.modal-tools .tool-btn:hover {
    color: var(--accent-primary);
}

.modal-tools .tool-btn.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 4px 10px rgba(0, 180, 216, 0.3);
}

.modal-section-header .modal-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.modal-section-header .modal-icon svg {
    width: 18px;
    height: 18px;
    color: white;
}

.modal-section-header h3 {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.modal-image-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
}

.modal-image-container img {
    display: block;
    max-width: 100%;
    max-height: calc(100vh - 220px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.modal-left .modal-info {
    padding: 12px 20px;
    background: linear-gradient(180deg, rgba(248, 250, 253, 0.5), rgba(248, 250, 253, 1));
    border-top: 1px solid var(--border-color);
    font-size: 0.78rem;
    color: var(--text-secondary);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 0;
}

.modal-left .modal-image-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow: hidden;
    background:
        linear-gradient(45deg, #f8fafc 25%, transparent 25%),
        linear-gradient(-45deg, #f8fafc 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #f8fafc 75%),
        linear-gradient(-45deg, transparent 75%, #f8fafc 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-color: #fdfdfd;
}

/* ===== Per-kind modal theming ===== */
/* Default (image) palette set in :root via existing accents */
.modal-content[data-kind="image"] {
    --modal-accent: #00b4d8;
    --modal-accent2: #0077b6;
    --modal-accent-soft: rgba(0, 180, 216, 0.12);
}

.modal-content[data-kind="pdfPage"] {
    --modal-accent: #e17055;
    --modal-accent2: #d63031;
    --modal-accent-soft: rgba(225, 112, 85, 0.14);
}

.modal-content[data-kind="docx"] {
    --modal-accent: #6c5ce7;
    --modal-accent2: #a29bfe;
    --modal-accent-soft: rgba(108, 92, 231, 0.14);
}

.modal-content[data-kind="pdfPage"] .modal-top-bar,
.modal-content[data-kind="docx"] .modal-top-bar {
    background: linear-gradient(135deg, var(--modal-accent-soft), rgba(108, 92, 231, 0.06));
}

.modal-content[data-kind="pdfPage"] .modal-top-bar::after,
.modal-content[data-kind="docx"] .modal-top-bar::after {
    background: linear-gradient(90deg, transparent, var(--modal-accent), transparent);
}

.modal-content[data-kind="pdfPage"] .modal-brand-icon,
.modal-content[data-kind="docx"] .modal-brand-icon {
    background: linear-gradient(135deg, var(--modal-accent), var(--modal-accent2));
    box-shadow: 0 10px 24px var(--modal-accent-soft), 0 0 0 4px rgba(0, 0, 0, 0.04);
}

.modal-content[data-kind="pdfPage"] .modal-kicker,
.modal-content[data-kind="docx"] .modal-kicker {
    color: var(--modal-accent);
}

.modal-content[data-kind="pdfPage"] .modal-section-header .modal-icon,
.modal-content[data-kind="docx"] .modal-section-header .modal-icon {
    background: linear-gradient(135deg, var(--modal-accent), var(--modal-accent2));
}

.modal-content[data-kind="pdfPage"] .modal-feedback-icon,
.modal-content[data-kind="docx"] .modal-feedback-icon {
    background: linear-gradient(135deg, var(--modal-accent), var(--modal-accent2));
    box-shadow: 0 4px 14px var(--modal-accent-soft);
}

.modal-content[data-kind="pdfPage"] .modal-block-count,
.modal-content[data-kind="docx"] .modal-block-count {
    background: linear-gradient(135deg, var(--modal-accent), var(--modal-accent2));
    box-shadow: 0 3px 8px var(--modal-accent-soft);
}

.modal-content[data-kind="pdfPage"] .modal-feedback,
.modal-content[data-kind="docx"] .modal-feedback {
    background: linear-gradient(135deg, var(--modal-accent-soft), rgba(255, 255, 255, 0.6));
    border-color: var(--modal-accent);
    border-width: 1px;
    border-style: solid;
}

/* ===== Native PDF viewer (iframe) ===== */
.pdf-native-view {
    flex: 1;
    display: flex;
    width: 100%;
    min-height: 0;
    background: #525659;
    overflow: hidden;
}

.pdf-iframe {
    flex: 1;
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    background: #525659;
}

/* ===== View mode toggle (Original PDF / Annotated) ===== */
.view-mode-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    margin-left: auto;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.view-mode-toggle .vmt-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    cursor: pointer;
    border-radius: 20px;
    transition: var(--transition-fast);
    font-family: inherit;
    white-space: nowrap;
}

.view-mode-toggle .vmt-btn:hover {
    color: var(--modal-accent, var(--accent-primary));
}

.view-mode-toggle .vmt-btn.active {
    background: linear-gradient(135deg, var(--modal-accent, #e17055), var(--modal-accent2, #d63031));
    color: #fff;
    box-shadow: 0 3px 10px var(--modal-accent-soft, rgba(225, 112, 85, 0.3));
}

.view-mode-toggle .vmt-btn svg {
    width: 13px;
    height: 13px;
}

/* ===== PDF page thumbnail strip (top of modal-left) ===== */
.pdf-page-strip {
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(180deg, rgba(225, 112, 85, 0.06), transparent);
    padding: 10px 16px 12px;
    flex-shrink: 0;
}

.pdf-strip-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--modal-accent, #e17055);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
}

.pdf-strip-label svg {
    width: 12px;
    height: 12px;
}

.pdf-strip-thumbs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 4px 2px 8px;
    scroll-behavior: smooth;
}

.pdf-strip-thumbs::-webkit-scrollbar { height: 8px; }
.pdf-strip-thumbs::-webkit-scrollbar-track { background: transparent; }
.pdf-strip-thumbs::-webkit-scrollbar-thumb { background: rgba(225, 112, 85, 0.3); border-radius: 8px; }
.pdf-strip-thumbs::-webkit-scrollbar-thumb:hover { background: var(--modal-accent, #e17055); }

.pdf-thumb {
    position: relative;
    flex-shrink: 0;
    width: 64px;
    height: 80px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    overflow: hidden;
    padding: 0;
    transition: var(--transition-fast);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.pdf-thumb:hover {
    border-color: var(--modal-accent, #e17055);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.pdf-thumb.active {
    border-color: var(--modal-accent, #e17055);
    box-shadow: 0 0 0 3px var(--modal-accent-soft, rgba(225, 112, 85, 0.18)),
                0 6px 14px rgba(0, 0, 0, 0.1);
}

.pdf-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.pdf-thumb-num {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2px 0;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    text-align: center;
}

.pdf-thumb-errors {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--accent-red);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 800;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #fff;
    box-shadow: 0 2px 6px rgba(225, 112, 85, 0.4);
}

/* ===== PDF page navigator (bottom of modal-left) ===== */
.pdf-page-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 18px;
    background: linear-gradient(180deg, rgba(248, 250, 253, 0.5), rgba(225, 112, 85, 0.06));
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.pdf-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: #fff;
    border: 1px solid var(--border-color);
    color: var(--modal-accent, #e17055);
    border-radius: 30px;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.pdf-nav-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--modal-accent, #e17055), var(--modal-accent2, #d63031));
    color: #fff;
    border-color: transparent;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--modal-accent-soft, rgba(225, 112, 85, 0.3));
}

.pdf-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pdf-nav-btn svg {
    width: 14px;
    height: 14px;
}

.pdf-nav-counter {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-display);
    letter-spacing: 0.3px;
}

/* ===== Score hero ===== */
.score-hero {
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 22px 24px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.score-hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.1), transparent 70%);
    pointer-events: none;
}

.score-hero.good::before { background: radial-gradient(circle, rgba(0, 184, 148, 0.14), transparent 70%); }
.score-hero.mid::before  { background: radial-gradient(circle, rgba(243, 156, 18, 0.14), transparent 70%); }
.score-hero.bad::before  { background: radial-gradient(circle, rgba(225, 112, 85, 0.14), transparent 70%); }

.score-ring-wrap {
    position: relative;
    width: 120px;
    height: 120px;
    flex-shrink: 0;
}

.score-ring {
    width: 100%;
    height: 100%;
    display: block;
}

.ring-progress {
    transition: stroke-dashoffset 1.2s cubic-bezier(0.22, 1, 0.36, 1);
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.08));
}

.score-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.score-center .score-num {
    font-family: var(--font-display);
    font-size: 2.3rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.score-center .score-outof {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.score-meta {
    flex: 1;
    min-width: 0;
    position: relative;
    z-index: 1;
}

.score-grade-letter {
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1;
    color: var(--accent-primary);
    letter-spacing: -1px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.score-hero.good .score-grade-letter { background: var(--success-gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.score-hero.mid .score-grade-letter  { background: linear-gradient(135deg, #f39c12, #e67e22); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.score-hero.bad .score-grade-letter  { background: var(--error-gradient); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.score-status {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 4px;
}

.score-sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ===== Stats grid ===== */
.modal-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 14px;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px 14px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.stat-card .stat-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
}

.stat-card .stat-icon svg {
    width: 18px;
    height: 18px;
    color: #fff;
}

.stat-card.spelling .stat-icon { background: linear-gradient(135deg, #ff9a44, #f39c12); }
.stat-card.grammar .stat-icon { background: var(--error-gradient); }
.stat-card.punctuation .stat-icon { background: linear-gradient(135deg, #fd79a8, #e84393); }

.stat-card .stat-value {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 6px;
}

/* ===== Feedback callout ===== */
.modal-feedback {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 18px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.08), rgba(108, 92, 231, 0.06));
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 14px;
    margin-bottom: 14px;
    position: relative;
}

.modal-feedback-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 14px rgba(0, 180, 216, 0.3);
}

.modal-feedback-icon svg {
    width: 18px;
    height: 18px;
    color: #fff;
}

.modal-feedback-body {
    flex: 1;
    min-width: 0;
}

.modal-feedback-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.modal-feedback p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===== Modal block ===== */
.modal-block {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.modal-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: linear-gradient(180deg, rgba(248, 250, 253, 1), rgba(248, 250, 253, 0.4));
    border-bottom: 1px solid var(--border-color);
}

.modal-block-header h4 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
}

.modal-block-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 8px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 800;
    border-radius: 11px;
    box-shadow: 0 3px 8px rgba(0, 180, 216, 0.3);
}

.modal-block-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.modal-block-tools {
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.btn-select-toggle {
    padding: 4px 10px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    cursor: pointer;
    border-radius: 14px;
    transition: var(--transition-fast);
    font-family: inherit;
}

.btn-select-toggle:hover {
    background: #fff;
    color: var(--accent-primary);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.06);
}

/* ===== Mistake checkbox (custom) ===== */
.mistake-checkbox {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    cursor: pointer;
    user-select: none;
    margin-top: 4px;
}

.mistake-checkbox input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.mistake-checkbox-box {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.mistake-checkbox-box svg {
    width: 13px;
    height: 13px;
    color: #fff;
    opacity: 0;
    transform: scale(0.6);
    transition: all 0.18s cubic-bezier(0.22, 1, 0.36, 1);
}

.mistake-checkbox input:checked ~ .mistake-checkbox-box {
    background: linear-gradient(135deg, #00b894, #00cec9);
    border-color: #00b894;
    box-shadow: 0 3px 8px rgba(0, 184, 148, 0.35);
}

.mistake-checkbox input:checked ~ .mistake-checkbox-box svg {
    opacity: 1;
    transform: scale(1);
}

.mistake-checkbox:hover .mistake-checkbox-box {
    border-color: #00b894;
}

.mistake-checkbox input:focus-visible ~ .mistake-checkbox-box {
    outline: 2px solid rgba(0, 184, 148, 0.4);
    outline-offset: 2px;
}

/* Selectable mistake cards get a leading gutter for the checkbox */
.modal-mistake-card.selectable {
    align-items: flex-start;
}

.mistake-item.selectable {
    align-items: flex-start;
}

/* Result card Detailed Corrections header with apply actions */
.mistakes-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.mistakes-section-header h3 {
    margin: 0;
}

.mistakes-section-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.mistakes-select-tools {
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

/* Layout tweak: allow mistake-item to host checkbox as first child */
.mistake-item {
    display: flex;
    gap: 12px;
}

.mistake-item.selectable > .mistake-checkbox {
    margin-right: -4px;
}

/* ===== Apply All Corrections button ===== */
.btn-apply-corrections {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: linear-gradient(135deg, #00b894, #00cec9);
    color: #fff;
    border: none;
    border-radius: 30px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    box-shadow: 0 4px 12px rgba(0, 184, 148, 0.3);
    white-space: nowrap;
}

.btn-apply-corrections:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(0, 184, 148, 0.45);
}

.btn-apply-corrections:disabled {
    opacity: 0.7;
    cursor: wait;
    transform: none;
}

.btn-apply-corrections svg {
    width: 14px;
    height: 14px;
}

.btn-apply-corrections .spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Mistake cards ===== */
.modal-mistakes-list {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-mistake-card {
    display: flex;
    gap: 12px;
    padding: 12px 14px;
    background: #fcfdff;
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-primary);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-mistake-card:hover {
    transform: translateX(3px);
    background: #fff;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
}

.modal-mistake-card.spelling { border-left-color: var(--accent-orange); }
.modal-mistake-card.grammar  { border-left-color: var(--accent-red); }
.modal-mistake-card.punctuation { border-left-color: var(--accent-pink); }

.modal-mistake-card.focused {
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.08), rgba(108, 92, 231, 0.04));
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.18), 0 8px 20px rgba(0, 180, 216, 0.12);
}

.modal-mistake-card .mistake-num {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: var(--primary-gradient);
    color: #fff;
    font-weight: 800;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-family: var(--font-display);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.modal-mistake-card .mistake-num.spelling { background: linear-gradient(135deg, #ff9a44, #f39c12); }
.modal-mistake-card .mistake-num.grammar { background: var(--error-gradient); }
.modal-mistake-card .mistake-num.punctuation { background: linear-gradient(135deg, #fd79a8, #e84393); }

.modal-mistake-card .mistake-body {
    flex: 1;
    min-width: 0;
}

.modal-mistake-card .mistake-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 6px;
}

.modal-mistake-card .mistake-original {
    font-weight: 700;
    color: var(--accent-red);
    text-decoration: line-through;
    background: rgba(225, 112, 85, 0.1);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
}

.modal-mistake-card .mistake-arrow {
    width: 14px;
    height: 14px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.modal-mistake-card .mistake-fixed {
    font-weight: 700;
    color: var(--accent-green);
    background: rgba(0, 184, 148, 0.1);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
}

.modal-mistake-card .mistake-tag {
    margin-left: auto;
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mistake-tag.tag-spelling { background: rgba(243, 156, 18, 0.15); color: var(--accent-orange); }
.mistake-tag.tag-grammar { background: rgba(225, 112, 85, 0.15); color: var(--accent-red); }
.mistake-tag.tag-punctuation { background: rgba(253, 121, 168, 0.15); color: var(--accent-pink); }

.modal-mistake-card .mistake-explanation {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.modal-mistake-card .mistake-nomark {
    display: inline-block;
    margin-top: 4px;
    font-size: 0.68rem;
    color: var(--text-muted);
    font-style: italic;
}

/* ===== Text tabs ===== */
.text-tabs {
    display: flex;
    gap: 4px;
    background: #fff;
    padding: 4px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.text-tab {
    padding: 6px 14px;
    font-size: 0.72rem;
    font-weight: 700;
    background: transparent;
    border: none;
    border-radius: 7px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: inherit;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.text-tab:hover {
    color: var(--accent-primary);
}

.text-tab.active {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 3px 10px rgba(0, 180, 216, 0.3);
}

.text-tab-panel {
    display: none;
    padding: 16px;
}

.text-tab-panel.active {
    display: block;
    animation: fadeIn 0.25s ease;
}

.text-tab-panel .extracted-text-block,
.text-tab-panel .corrected-text-block {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.7;
    padding: 14px 16px;
    border-radius: 10px;
    white-space: pre-wrap;
    word-break: break-word;
}

.text-tab-panel .extracted-text-block {
    background: rgba(248, 250, 253, 1);
    border: 1px solid var(--border-color);
}

.text-tab-panel .corrected-text-block {
    background: rgba(0, 184, 148, 0.06);
    border: 1px solid rgba(0, 184, 148, 0.2);
    color: var(--text-primary);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Empty states ===== */
.modal-empty {
    padding: 40px 24px;
    text-align: center;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-muted);
}

.modal-empty .empty-illus {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    display: block;
    color: var(--text-muted);
    opacity: 0.8;
}

.modal-empty h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.modal-empty p {
    margin: 0;
    font-size: 0.85rem;
}

.modal-empty.error { border-color: rgba(225, 112, 85, 0.3); background: rgba(225, 112, 85, 0.04); }
.modal-empty.error .empty-illus { color: var(--accent-red); opacity: 1; }
.modal-empty.error h4 { color: var(--accent-red); }

.modal-empty.success { border-color: rgba(0, 184, 148, 0.3); background: rgba(0, 184, 148, 0.04); }
.modal-empty.success .empty-illus { color: var(--accent-green); opacity: 1; }
.modal-empty.success h4 { color: var(--accent-green); }

/* Focused marker animation */
.mistake-marker.focused {
    z-index: 5;
    border-width: 3px;
    animation: markerFocus 1.2s ease;
}

@keyframes markerFocus {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 180, 216, 0); }
    50%      { box-shadow: 0 0 0 10px rgba(0, 180, 216, 0.35); }
}

.modal-right-scroll .highlight-error {
    background: rgba(225, 112, 85, 0.2);
    color: var(--accent-red);
    padding: 2px 6px;
    border-radius: 4px;
    text-decoration: line-through;
    font-weight: 600;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.modal-content img {
    max-width: 100%;
    max-height: calc(100vh - 180px);
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.modal-close {
    position: relative;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.modal-close:hover {
    background: var(--accent-red);
}

.modal-close svg {
    width: 20px;
    height: 20px;
    color: var(--text-primary);
}

.modal-close:hover svg {
    color: white;
}

.modal-info {
    margin-top: 20px;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border-radius: 50px;
    font-size: 0.813rem;
    color: var(--text-secondary);
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
}

.modal-header {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-header h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 600;
}

.modal-header .modal-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-header .modal-icon svg {
    width: 18px;
    height: 18px;
    color: white;
}

/* Responsive modal for smaller screens */
@media (max-width: 1200px) {
    .modal-content {
        width: 96%;
        height: 96%;
    }

    .modal-right {
        max-width: 440px;
    }
}

@media (max-width: 1024px) {
    .image-modal.active {
        padding: 10px;
    }

    .modal-content {
        width: 100%;
        height: 100%;
        border-radius: 14px;
    }

    .modal-body {
        gap: 14px;
        padding: 14px;
    }

    .modal-right {
        max-width: 380px;
    }
}

@media (max-width: 880px) {
    .image-modal.active {
        padding: 0;
    }

    .modal-content {
        border-radius: 0;
        border: none;
        height: 100%;
    }

    .modal-top-bar {
        padding: 14px 16px;
        gap: 12px;
    }

    .modal-brand-icon {
        width: 44px;
        height: 44px;
    }

    .modal-title {
        font-size: 1rem;
    }

    .modal-kicker {
        font-size: 0.62rem;
    }

    .modal-body {
        flex-direction: column;
        padding: 14px;
        gap: 14px;
        overflow-y: auto;
    }

    .modal-left,
    .modal-right {
        flex: none;
        max-width: 100%;
    }

    .modal-left {
        max-height: 50vh;
    }

    .modal-section-header {
        padding: 12px 14px;
        flex-wrap: wrap;
    }

    .modal-section-header h3 {
        font-size: 0.85rem;
    }

    .modal-tools .tool-btn {
        padding: 4px 10px;
        font-size: 0.68rem;
    }

    .modal-chips {
        gap: 6px;
    }

    .modal-chip {
        font-size: 0.68rem;
        padding: 4px 10px;
    }

    .modal-stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .score-hero {
        padding: 18px 20px;
        gap: 18px;
    }

    .score-ring-wrap {
        width: 100px;
        height: 100px;
    }

    .score-center .score-num {
        font-size: 1.9rem;
    }

    .score-grade-letter {
        font-size: 2rem;
    }
}

@media (max-width: 520px) {
    .modal-top-bar {
        padding: 12px 14px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .modal-top-right {
        width: 100%;
        justify-content: space-between;
    }

    .modal-brand-icon {
        width: 40px;
        height: 40px;
    }

    .modal-stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .stat-card {
        padding: 12px 8px;
    }

    .stat-card .stat-value {
        font-size: 1.4rem;
    }

    .score-hero {
        flex-direction: column;
        text-align: center;
    }

    .modal-mistakes-list {
        padding: 10px;
    }
}

/* SVG Gradient Definition (added via JS) */
.svg-defs {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}