/* Enterprise PDF Accessibility Checker — Redesigned */
/* Aesthetic: Precision Observatory — utilitarian elegance with warm accents */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ── Design Tokens — Aimpress ── */
:root {
    /* Typography */
    --font-display: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Core palette — Aimpress indigo */
    --accent: #6366F1;
    --accent-hover: #4F46E5;
    --accent-glow: rgba(99, 102, 241, 0.2);
    --accent-subtle: rgba(99, 102, 241, 0.08);
    --accent-text: #ffffff; /* text on accent backgrounds */

    /* Semantic */
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.08);
    --warning: #d97706;
    --warning-bg: rgba(217, 119, 6, 0.08);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.08);
    --critical: #dc2626;
    --critical-bg: rgba(220, 38, 38, 0.08);
    --info: #3b82f6;
    --info-bg: rgba(37, 99, 235, 0.08);

    /* Surfaces — Light */
    --bg: #f5f4f1;
    --bg-subtle: #eae8e4;
    --surface: #ffffff;
    --surface-raised: #ffffff;
    --surface-alt: #faf9f7;
    --text: #1a1a1a;
    --text-light: #4a4a4a;
    --text-secondary: #555555;
    --text-muted: #5a5a5a;
    --border: #e0ddd8;
    --border-subtle: #eae8e4;
    --divider: #d4d0ca;
    --log-bg: #faf9f7;
    --primary: #6366F1;
    --primary-dark: #e6b006;
    --black: #1a1a1a;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1), 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 0 1px var(--accent), 0 0 20px var(--accent-glow);

    /* Geometry */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Dark Mode ── */
:root[data-theme="dark"] {
    --bg: #0e0e0e;
    --bg-subtle: #161616;
    --surface: #1c1c1c;
    --surface-raised: #242424;
    --surface-alt: #181818;
    --text: #f0f0f0;
    --text-light: #b0b0b0;
    --text-secondary: #aaaaaa;
    --text-muted: #9a9a9a;
    --border: #333333;
    --border-subtle: #2a2a2a;
    --divider: #303030;
    --log-bg: #121212;
    --primary: #6366F1;
    --primary-dark: #ffd54f;
    --black: #f0f0f0;
    --accent: #6366F1;
    --accent-hover: #ffd54f;
    --accent-glow: rgba(255, 196, 7, 0.25);
    --accent-subtle: rgba(255, 196, 7, 0.1);
    --accent-text: #000000;

    --success-bg: rgba(5, 150, 105, 0.15);
    --warning-bg: rgba(217, 119, 6, 0.15);
    --error-bg: rgba(239, 68, 68, 0.12);
    --critical-bg: rgba(220, 38, 38, 0.12);
    --info-bg: rgba(37, 99, 235, 0.12);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* ── Dev Banner ── */
.dev-banner {
    background: #dc2626;
    color: #ffffff;
    text-align: center;
    padding: 6px 16px;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    position: sticky;
    top: 0;
    z-index: 200;
}

/* ── Skip Navigation Link ── */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    background: var(--accent);
    color: var(--accent-text);
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 700;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    z-index: 9999;
    transition: top 0.15s;
}

.skip-link:focus {
    top: 16px;
    outline: 3px solid var(--accent-text);
    outline-offset: 2px;
}

/* ── Base ── */
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
    overflow-x: hidden;
}

/* Subtle noise texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    position: relative;
    z-index: 1;
}

/* ── Header ── */
header {
    border-bottom: 1px solid var(--border);
    padding: 0;
    margin-bottom: 32px;
    background: var(--bg);
    box-shadow: var(--shadow-sm);
}

:root[data-theme="dark"] header {
    background: rgba(14, 14, 14, 0.85);
}

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

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 64px;
}

h1 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.03em;
    margin-bottom: 0;
}

h1::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 20px;
    background: var(--accent);
    border-radius: 2px;
    margin-right: 12px;
    vertical-align: middle;
}

.subtitle {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
    letter-spacing: 0.01em;
}

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.header-actions button {
    font-family: var(--font-body);
    background: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s var(--ease-out);
}

.header-actions button:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-subtle);
}

#themeToggle {
    padding: 10px 20px;
    font-size: 15px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.user-info {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
}

/* ── Cards ── */
.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 20px;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-sm);
    animation: fadeUp 0.5s var(--ease-out) backwards;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.card h2 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text);
    letter-spacing: -0.02em;
}

/* ── Upload Area ── */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 64px 40px;
    text-align: center;
    transition: all 0.3s var(--ease-out);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    background: var(--surface-alt);
}

.upload-area::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, var(--accent-glow) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}

.upload-area:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.upload-area:hover::after {
    opacity: 1;
}

.upload-area.dragover {
    border-color: var(--accent);
    background: var(--accent-subtle);
    box-shadow: var(--shadow-glow);
    transform: scale(1.01);
}

.upload-area.dragover::after {
    opacity: 1;
}

.upload-area input[type="file"] {
    display: none;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
    filter: grayscale(0.2);
    color: var(--text);
}

:root[data-theme="dark"] .upload-icon {
    color: var(--accent);
}

.upload-text {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text);
    position: relative;
    z-index: 1;
}

.upload-hint {
    font-size: 13px;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

/* ── Buttons ── */
.btn {
    font-family: var(--font-display);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--accent);
    color: var(--accent-text);
    border: none;
    font-weight: 700;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--surface-alt);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-subtle);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ── Progress ── */
.progress-container {
    display: none;
    padding: 24px;
    background: var(--surface-alt);
    border-radius: var(--radius-md);
    margin-top: 24px;
    border: 1px solid var(--border-subtle);
    animation: fadeUp 0.4s var(--ease-out);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 12px;
}

.progress-text {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.progress-percent {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.03em;
}

.progress-bar {
    height: 6px;
    background: var(--bg-subtle);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 20px;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent) 0%, #ffe066 100%);
    transition: width 0.4s var(--ease-out);
    border-radius: 3px;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: -2px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: 0.6; }
}

/* Processing log */
.progress-log {
    background: var(--log-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.log-header {
    background: var(--text);
    color: var(--bg);
    padding: 10px 16px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

:root[data-theme="dark"] .log-header {
    background: #242424;
    color: var(--text);
}

.log-content {
    padding: 12px;
    max-height: 240px;
    overflow-y: auto;
    font-size: 12px;
    line-height: 1.6;
}

.log-content::-webkit-scrollbar {
    width: 4px;
}

.log-content::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.log-entry {
    padding: 6px 10px;
    margin-bottom: 4px;
    border-radius: var(--radius-sm);
    background: var(--surface-alt);
    border-left: 3px solid var(--border);
    font-family: var(--font-body);
    animation: logSlide 0.3s var(--ease-out);
}

.log-entry.success { background: var(--success-bg); border-left-color: var(--success); color: #065f46; }
.log-entry.warning { background: var(--warning-bg); border-left-color: var(--warning); color: #92400e; }
.log-entry.error { background: var(--error-bg); border-left-color: var(--error); color: #991b1b; }
.log-entry.info { background: var(--info-bg); border-left-color: var(--info); color: #1e40af; }

:root[data-theme="dark"] .log-entry.success { color: #6ee7b7; }
:root[data-theme="dark"] .log-entry.warning { color: #fcd34d; }
:root[data-theme="dark"] .log-entry.error { color: #fca5a5; }
:root[data-theme="dark"] .log-entry.info { color: #93c5fd; }

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

/* ── Results ── */
.results { display: none; }

.score-display {
    display: inline-flex;
    align-items: center;
    gap: 20px;
    padding: 20px 32px;
    background: #1a1a1a;
    border-radius: var(--radius-md);
    color: #ffffff;
    margin-bottom: 24px;
    position: relative;
    overflow: visible;
    animation: scoreReveal 0.6s var(--ease-out) backwards;
    animation-delay: 0.2s;
    border: none;
}

:root[data-theme="dark"] .score-display {
    background: #242424;
    border: 1px solid #333;
}

.score-display::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent);
}

.score-display::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--accent-glow));
    opacity: 0.5;
}

@keyframes scoreReveal {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.score-number {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
    position: relative;
    z-index: 1;
}

.score-label {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 500;
    opacity: 0.7;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    position: relative;
    z-index: 1;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.stat-card {
    padding: 16px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: transform 0.2s var(--ease-out), box-shadow 0.2s;
    animation: fadeUp 0.4s var(--ease-out) backwards;
}

.stat-card:nth-child(1) { animation-delay: 0.3s; }
.stat-card:nth-child(2) { animation-delay: 0.35s; }
.stat-card:nth-child(3) { animation-delay: 0.4s; }
.stat-card:nth-child(4) { animation-delay: 0.45s; }
.stat-card:nth-child(5) { animation-delay: 0.5s; }

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

.stat-card.critical { background: var(--critical-bg); border: 1px solid rgba(220, 38, 38, 0.2); }
.stat-card.error { background: var(--error-bg); border: 1px solid rgba(239, 68, 68, 0.2); }
.stat-card.warning { background: var(--warning-bg); border: 1px solid rgba(217, 119, 6, 0.2); }
.stat-card.info { background: var(--info-bg); border: 1px solid rgba(37, 99, 235, 0.2); }
.stat-card.success { background: var(--success-bg); border: 1px solid rgba(5, 150, 105, 0.2); }

.stat-card.critical .stat-number { color: #dc2626; }
.stat-card.error .stat-number { color: #ef4444; }
.stat-card.warning .stat-number { color: #d97706; }
.stat-card.info .stat-number { color: #3b82f6; }
.stat-card.success .stat-number { color: #059669; }

:root[data-theme="dark"] .stat-card.critical .stat-number { color: #fca5a5; }
:root[data-theme="dark"] .stat-card.error .stat-number { color: #fca5a5; }
:root[data-theme="dark"] .stat-card.warning .stat-number { color: #fcd34d; }
:root[data-theme="dark"] .stat-card.info .stat-number { color: #93c5fd; }
:root[data-theme="dark"] .stat-card.success .stat-number { color: #6ee7b7; }

.stat-number {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.03em;
}

.stat-label {
    font-family: var(--font-display);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    color: var(--text-secondary);
}

:root[data-theme="dark"] .stat-label {
    color: #cccccc;
}

/* ── Issues ── */
.issues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 10px;
}

.issue {
    padding: 14px 16px;
    margin-bottom: 0;
    border-radius: var(--radius-md);
    border-left: 3px solid;
    transition: transform 0.15s var(--ease-out), box-shadow 0.15s;
}

.issue:hover {
    transform: translateX(2px);
    box-shadow: var(--shadow-sm);
}

.issue.CRITICAL { background: var(--critical-bg); border-left-color: var(--critical); }
.issue.ERROR { background: var(--error-bg); border-left-color: var(--error); }
.issue.WARNING { background: var(--warning-bg); border-left-color: var(--warning); }
.issue.INFO { background: var(--info-bg); border-left-color: var(--info); }
.issue.SUCCESS { background: var(--success-bg); border-left-color: var(--success); }

.issue-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.issue-category {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.issue-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 4px;
    font-family: var(--font-display);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.issue-badge.CRITICAL { background: var(--critical); color: white; }
.issue-badge.ERROR { background: var(--error); color: white; }
.issue-badge.WARNING { background: var(--warning); color: white; }
.issue-badge.INFO { background: var(--info); color: white; }
.issue-badge.SUCCESS { background: var(--success); color: white; }

.issue-description {
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.5;
    font-size: 13px;
}

.issue-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 500;
}

.wcag-link {
    color: var(--info);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px dotted var(--info);
    transition: color 0.15s, border-color 0.15s;
}

.wcag-link:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.issue-recommendation {
    background: var(--success-bg);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border-left: 2px solid var(--success);
    font-size: 12px;
    color: var(--text);
    margin-top: 8px;
    line-height: 1.5;
}

.issue-recommendation strong {
    color: var(--success);
    font-weight: 600;
}

/* ── Filters ── */
.filters {
    display: flex;
    gap: 6px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-display);
    padding: 7px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s var(--ease-out);
    color: var(--text-secondary);
}

.filter-btn.active {
    background: var(--accent);
    color: var(--accent-text);
    border-color: var(--accent);
    font-weight: 700;
}

.filter-btn:hover:not(.active) {
    border-color: var(--accent);
    color: var(--accent);
}

/* ── Loading Spinner ── */
.loading {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* ── Config / Form ── */
.api-config {
    margin-top: 24px;
    padding: 20px;
    background: var(--surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.form-group { margin-bottom: 16px; }

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 13px;
    color: var(--text);
}

.form-group input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 14px;
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: 2px solid var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.help-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
    line-height: 1.5;
}

/* ── Auth Overlay ── */
.auth-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(12, 14, 22, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.auth-overlay.active {
    display: flex;
}

.auth-card {
    background: var(--surface);
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-subtle);
    animation: scaleIn 0.4s var(--ease-spring);
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}

.auth-card h2 {
    font-family: var(--font-display);
    color: var(--text);
    margin-bottom: 8px;
    font-size: 22px;
}

.auth-card p {
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 14px;
}

.btn-microsoft {
    background: var(--text);
    color: var(--bg);
    border: none;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s var(--ease-out);
}

.btn-microsoft:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

:root[data-theme="dark"] .btn-microsoft {
    background: #ffffff;
    color: #1a1a2e;
}

/* ── Upload Mode Tabs ── */
.upload-mode-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.upload-tab {
    font-family: var(--font-display);
    padding: 10px 20px;
    border: none;
    background: none;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.2s, border-color 0.2s;
    letter-spacing: -0.01em;
}

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

.upload-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    font-weight: 700;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .container { padding: 12px; }
    h1 { font-size: 18px; }
    h1::before { height: 16px; margin-right: 8px; }
    .card { padding: 20px; border-radius: var(--radius-md); }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .issues-grid { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; gap: 10px; align-items: flex-start; }
    .upload-area { padding: 40px 20px; }
    .score-display { padding: 16px 20px; gap: 14px; }
    .score-number { font-size: 36px; }

    .page-viewer-layout {
        flex-direction: column !important;
    }

    .page-selector-wrap {
        flex-shrink: unset !important;
        min-width: unset !important;
    }

    #pageSelector {
        flex-direction: row !important;
        overflow-x: auto;
    }
}

/* ── Utility ── */
.hidden { display: none !important; }

/* ── Selection & Focus ── */
::selection {
    background: var(--accent);
    color: white;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ── Custom scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ── Start-Ready State ── */
.upload-ready {
    display: none;
    padding: 24px;
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-top: 20px;
    animation: fadeUp 0.4s var(--ease-out);
}

.upload-ready .ready-filename {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}

.upload-ready .ready-filesize {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.btn-start {
    background: var(--accent);
    color: var(--accent-text);
    border: none;
    font-weight: 700;
    padding: 14px 32px;
    font-size: 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-display);
    transition: all 0.2s var(--ease-out);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-start:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 20px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 13px;
    cursor: pointer;
    padding: 4px 8px;
    margin-left: 16px;
    text-decoration: underline;
    font-family: var(--font-body);
}

.btn-remove:hover {
    color: var(--error);
}

/* ── Score Breakdown ── */
.score-breakdown {
    margin-top: 16px;
    padding: 14px 18px;
    background: var(--surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    font-size: 13px;
}

.score-breakdown summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    font-family: var(--font-display);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
    user-select: none;
}

.score-breakdown summary::before {
    content: '▶';
    font-size: 10px;
    transition: transform 0.2s;
}

.score-breakdown[open] summary::before {
    transform: rotate(90deg);
}

.score-breakdown-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 12px;
    font-size: 12px;
}

.score-breakdown-table th {
    text-align: left;
    padding: 6px 10px;
    background: var(--bg-subtle);
    color: var(--text-secondary);
    font-weight: 600;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-size: 11px;
}

.score-breakdown-table td {
    padding: 6px 10px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text);
}

/* ── Dismiss Feature ── */
.issue.dismissed {
    opacity: 0.45;
    filter: grayscale(0.6);
    position: relative;
}

.issue.dismissed .issue-description {
    text-decoration: line-through;
    text-decoration-color: var(--text-muted);
}

.btn-dismiss {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-weight: 600;
    transition: all 0.15s;
    margin-left: 8px;
    white-space: nowrap;
}

.btn-dismiss:hover {
    border-color: var(--error);
    color: var(--error);
    background: var(--error-bg);
}

/* ── Issue Group Cards (table grouping) ── */
.issue-group-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.issue-group-card.dismissed {
    opacity: 0.5;
}

.issue-group-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--surface-alt);
    cursor: pointer;
    user-select: none;
}

.issue-group-header:hover {
    background: var(--accent-subtle);
}

.issue-group-details {
    padding: 8px;
    display: block;
}

.btn-undismiss {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 11px;
    cursor: pointer;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-weight: 600;
    transition: all 0.15s;
    margin-left: 8px;
}

.btn-undismiss:hover {
    border-color: var(--success);
    color: var(--success);
}

/* Mark as Passed button */
.btn-mark-passed {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-weight: 600;
    transition: all 0.15s;
    margin-left: 8px;
    white-space: nowrap;
}

.btn-mark-passed:hover {
    border-color: var(--success);
    color: var(--success);
    background: var(--success-bg);
}

/* Undo override button */
.btn-unoverride {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 11px;
    cursor: pointer;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-weight: 600;
    transition: all 0.15s;
    margin-left: 8px;
}

.btn-unoverride:hover {
    border-color: var(--warning);
    color: var(--warning);
}

/* Manual pass label in check breakdown table */
.check-manual-pass {
    color: var(--success);
    font-weight: 700;
    font-style: italic;
}

/* Recalculate Score button */
.btn-recheck {
    background: var(--accent);
    border: none;
    color: var(--accent-text);
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.15s;
    margin-top: 8px;
}

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

/* Adjusted score badge */
.score-adjusted-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-subtle);
    border: 1px solid var(--accent-glow);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.dismiss-toggle-bar {
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.dismiss-toggle-bar button {
    background: none;
    border: none;
    color: var(--info);
    cursor: pointer;
    text-decoration: underline;
    font-size: 13px;
    font-family: var(--font-body);
    padding: 0;
}

/* ── Matterhorn Table ── */
#matterhornCard table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-top: 16px;
}

#matterhornCard th {
    text-align: left;
    padding: 8px 12px;
    background: var(--bg-subtle);
    color: var(--text-secondary);
    font-weight: 700;
    font-family: var(--font-display);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid var(--border);
}

#matterhornCard td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text);
    vertical-align: top;
}

#matterhornCard tr.section-header td {
    background: var(--surface-alt);
    font-weight: 700;
    font-family: var(--font-display);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    padding: 10px 12px 6px;
}

.matterhorn-banner {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-family: var(--font-display);
    font-size: 15px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.matterhorn-banner.pass {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(5, 150, 105, 0.3);
}

.matterhorn-banner.fail {
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

:root[data-theme="dark"] .matterhorn-banner.pass { color: #6ee7b7; }
:root[data-theme="dark"] .matterhorn-banner.fail { color: #fca5a5; }

.badge-m, .badge-h {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 10px;
    font-weight: 700;
    font-family: var(--font-display);
}

.badge-m { background: var(--info-bg); color: var(--info); }
.badge-h { background: var(--warning-bg); color: var(--warning); }

.mh-pass { color: var(--success); font-weight: 700; }
.mh-fail { color: var(--error); font-weight: 700; }
.mh-not-tested { color: var(--text-muted); }

:root[data-theme="dark"] .mh-pass { color: #6ee7b7; }
:root[data-theme="dark"] .mh-fail { color: #fca5a5; }

/* ── WCAG Compliance Badges ── */
.wcag-compliance-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 16px 0 8px;
}

.wcag-badge {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    min-width: 120px;
    gap: 2px;
}

.wcag-badge.pass {
    background: var(--success-bg);
    border-color: var(--success);
    color: var(--success);
}

.wcag-badge.fail {
    background: var(--error-bg);
    border-color: var(--error);
    color: var(--error);
}

.wcag-badge-level {
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.wcag-badge-status {
    font-size: 15px;
    font-weight: 800;
}

.compliance-failures {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* WCAG Level pill on issue cards */
.wcag-level-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    font-family: var(--font-display);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    vertical-align: middle;
}

.wcag-level-A   { background: var(--error-bg);   color: var(--error);   border: 1px solid var(--error); }
.wcag-level-AA  { background: var(--warning-bg);  color: var(--warning); border: 1px solid var(--warning); }
.wcag-level-AAA { background: var(--info-bg);     color: var(--info);    border: 1px solid var(--info); }

/* ── Next Steps Card ── */
.next-step-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.next-step-item:last-child { border-bottom: none; }

.next-step-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--accent-text);
    font-family: var(--font-display);
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.next-step-body { flex: 1; }

.next-step-action {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 5px;
}

.next-step-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

/* ── Document History Table ── */
.history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.history-table th {
    text-align: left;
    padding: 10px 14px;
    background: var(--surface-alt);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid var(--border);
}

.history-table td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    color: var(--text);
}

.history-table tbody tr:hover {
    background: var(--surface-alt);
}

.history-filename {
    max-width: 260px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 600;
}

.history-score {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 18px;
}

.history-score small {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-muted);
}

.history-score-a { color: var(--success); }
.history-score-b { color: var(--warning); }
.history-score-f { color: var(--error); }

.history-grade {
    display: inline-block;
    margin-left: 6px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 13px;
    color: var(--text-muted);
}

.history-badge-done {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(5, 150, 105, 0.12);
    color: var(--success);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
}

.history-badge-pending {
    display: inline-block;
    padding: 3px 10px;
    background: var(--surface-alt);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
}

.history-crit {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(220, 38, 38, 0.1);
    color: var(--critical);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    margin-right: 4px;
}

.history-err {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.history-actions {
    white-space: nowrap;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.history-action-btn {
    display: inline-block;
    padding: 5px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    text-decoration: none;
    transition: border-color 0.15s, color 0.15s;
}

.history-action-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.history-action-delete:hover {
    border-color: var(--error);
    color: var(--error);
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}