/* ============================================================
   AIHealthcare — Shared Stylesheet
   Material Design 3 Healthcare palette (teal / emerald)
   Fonts: Inter (body), Outfit (headings), JetBrains Mono (code)
   ============================================================ */

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

/* ----- Design Tokens (CSS Custom Properties) ----- */
:root {
    /* M3 Primary — teal */
    --primary: #006875;
    --primary-light: #33a6b7;
    --primary-dark: #004b56;
    --primary-container: #a5f0fc;
    --on-primary: #ffffff;
    --on-primary-container: #001f24;

    /* M3 Secondary */
    --secondary: #4a6266;
    --secondary-container: #cde7ec;

    /* M3 Tertiary */
    --tertiary: #525e7d;
    --tertiary-container: #d9e2ff;

    /* Emerald accent */
    --accent: #7ab800;
    --accent-light: #9cd633;
    --accent-dark: #558100;
    --accent-container: #ebf7cc;

    /* M3 Error */
    --error: #ba1a1a;
    --error-container: #ffdad6;
    --on-error-container: #410002;

    /* M3 Surfaces */
    --background: #fcfdfd;
    --surface: #fcfdfd;
    --surface-dim: #f0f4f5;
    --surface-container: #e5e9ea;
    --surface-container-low: #f8f9fa;
    --on-surface: #191c1d;
    --on-surface-variant: #3f484a;
    --outline: #6f797b;
    --outline-variant: #bfc8ca;

    /* Fonts */
    --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-display: "Outfit", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

    /* Radii */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 99px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.10);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
}


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


/* ==================== Base ==================== */
body {
    font-family: var(--font-sans);
    background: var(--surface-dim);
    color: var(--on-surface);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}


/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--on-primary-container);
    line-height: 1.3;
}


/* ==================== Header ==================== */
header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: var(--on-primary);
    padding: 1.25rem 2rem;
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
}
header h1 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}
header p {
    font-size: 0.8rem;
    opacity: 0.65;
}


/* ==================== Navigation ==================== */
nav {
    background: var(--on-primary-container);
    padding: 0 2rem;
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
}
nav a {
    color: var(--outline-variant);
    text-decoration: none;
    font-size: 0.78rem;
    font-weight: 500;
    padding: 0.65rem 0.75rem;
    border-bottom: 2px solid transparent;
    display: inline-block;
    white-space: nowrap;
    transition: color 0.15s, border-color 0.15s;
}
nav a:hover {
    color: var(--on-primary);
}
nav a.active, nav a[aria-current="page"] {
    color: var(--on-primary);
    border-bottom-color: var(--primary-container);
}
nav a[style*="margin-left:auto"] {
    color: #ef9a9a;
}


/* ==================== Main Container ==================== */
main {
    max-width: 1200px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}


/* ==================== Section / Card ==================== */
section, .card, .section-card, .search-card, .filter-card, .detail-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    padding: 1.25rem 1.5rem;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 2px solid var(--surface-dim);
    padding-bottom: 0.75rem;
    margin-bottom: 1.25rem;
}
.section-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--on-primary-container);
}

.api-link {
    font-size: 0.75rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}
.api-link:hover { text-decoration: underline; }


/* ==================== Stat Cards ==================== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.875rem;
    margin-bottom: 1.25rem;
}
.stat-card {
    background: var(--primary-container);
    background: color-mix(in srgb, var(--primary-container) 25%, white);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-sm);
    padding: 0.875rem 1rem;
}
.stat-card.green  { background: var(--accent-container); border-color: var(--accent); }
.stat-card.amber  { background: #fff8e1; border-color: #f9a825; }
.stat-card.slate  { background: var(--surface-dim); border-color: var(--outline); }
.stat-card .value {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--on-primary-container);
    line-height: 1;
}
.stat-card .value.sm { font-size: 1rem; margin-top: 0.25rem; }
.stat-card .label {
    font-size: 0.7rem;
    color: var(--outline);
    margin-top: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* Stat box (wiki-digest variant) */
.stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}
.stat-box {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    padding: 1rem;
}
.stat-box.green { border-left: 4px solid var(--accent); }
.stat-box.blue  { border-left: 4px solid var(--primary); }
.stat-box.amber { border-left: 4px solid #f9a825; }
.stat-box.slate { border-left: 4px solid var(--outline); }


/* ==================== Tables ==================== */
table {
    width: 100%;
    border-collapse: collapse;
}
thead th {
    background: var(--surface-dim);
    text-align: left;
    padding: 0.55rem 0.75rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--outline);
    font-weight: 600;
}
tbody td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--surface-dim);
    font-size: 0.875rem;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: color-mix(in srgb, var(--primary-container) 15%, white); }
tbody tr.highlight td { background: var(--accent-container); font-weight: 600; }

.result-table {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}


/* ==================== Badges ==================== */
.badge {
    display: inline-block;
    padding: 0.15em 0.55em;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 600;
    vertical-align: middle;
}
.badge-best { background: var(--accent-container); color: var(--accent-dark); }

/* Status badges */
.status-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.status-DRAFT    { background: var(--primary-container); color: var(--primary-dark); }
.status-SENT     { background: var(--accent-container); color: var(--accent-dark); }
.status-ARCHIVED { background: var(--surface-container); color: var(--outline); }

/* Tier badges */
.tier-badge {
    display: inline-block;
    padding: 0.15em 0.55em;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 600;
}
.tier-ACADEMIC    { background: #dbeafe; color: #1e40af; }
.tier-REGULATORY  { background: #fef3c7; color: #92400e; }
.tier-INDUSTRY    { background: var(--accent-container); color: var(--accent-dark); }
.tier-COMPETITOR  { background: var(--tertiary-container); color: var(--tertiary); }
.tier-HUGGINGFACE { background: #fce7f3; color: #9d174d; }
.tier-PERPLEXITY  { background: var(--secondary-container); color: var(--secondary); }
.tier-unknown     { background: var(--surface-dim); color: var(--outline); }

/* Research mode badges */
.badge-combined { background: var(--accent-container); color: var(--accent-dark); }
.badge-staged   { background: color-mix(in srgb, var(--primary-container) 40%, white); color: var(--primary-dark); }
.badge-legacy   { background: var(--surface-container); color: var(--outline); }

/* Wiki page type badges */
.badge-entity     { background: var(--accent-container); color: var(--accent-dark); }
.badge-concept    { background: var(--primary-container); color: var(--primary-dark); }
.badge-comparison { background: #fff8e1; color: #f57f17; }
.badge-overview   { background: var(--surface-container); color: var(--outline); }

/* Admin role badges */
.badge-admin    { background: var(--tertiary-container); color: var(--tertiary); }
.badge-user     { background: var(--secondary-container); color: var(--secondary); }
.badge-active   { background: var(--accent-container); color: var(--accent-dark); }
.badge-disabled { background: var(--error-container); color: var(--on-error-container); }

/* Profile tier badges */
.tier-badge.subscriber { background: var(--accent-container); color: var(--accent-dark); text-transform: uppercase; }
.tier-badge.demo       { background: #fff8e1; color: #f57f17; }
.admin-badge           { background: #fff8e1; color: #f57f17; }

/* Topic badge */
.topic-badge {
    display: inline-block;
    background: var(--primary-container);
    color: var(--primary-dark);
    padding: 0.15em 0.55em;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 600;
}

/* Count badge */
.count-badge {
    display: inline-block;
    background: var(--primary-container);
    color: var(--primary-dark);
    padding: 0.15em 0.55em;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 600;
}

/* Relevance badges */
.relevance-badge.high   { background: var(--accent); color: white; }
.relevance-badge.medium { background: #f9a825; color: white; }
.relevance-badge.low    { background: var(--outline); color: white; }


/* ==================== Buttons ==================== */
.btn-primary, .login-button, .register-button, .tier-button.subscriber {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: var(--on-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, box-shadow 0.15s;
}
.btn-primary:hover, .login-button:hover, .register-button:hover, .tier-button.subscriber:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-success {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-success:hover { background: var(--accent-dark); }

.btn-secondary {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--outline);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-secondary:hover { background: var(--on-surface-variant); }

.btn-outline {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    border: 1px solid var(--primary);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-outline:hover { background: color-mix(in srgb, var(--primary-container) 30%, white); }

.btn-search {
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: var(--on-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
    text-align: center;
}
.btn-search:hover { background: var(--primary-dark); }

.btn-clear {
    padding: 0.65rem 1.5rem;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    background: var(--surface-container-low);
    color: var(--on-surface);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-clear:hover { background: var(--surface-container); }

.btn-sm {
    padding: 0.25em 0.65em;
    border: 1px solid var(--outline-variant);
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 500;
    cursor: pointer;
    background: white;
    transition: background 0.15s, border-color 0.15s;
}
.btn-sm:hover { background: var(--surface-dim); }

.btn-disable { border-color: var(--error); color: var(--error); }
.btn-disable:hover { background: var(--error-container); }
.btn-enable  { border-color: var(--accent); color: var(--accent-dark); }
.btn-enable:hover  { background: var(--accent-container); }
.btn-role    { border-color: var(--tertiary); color: var(--tertiary); }
.btn-role:hover    { background: var(--tertiary-container); }

/* Choose-path buttons */
.btn-free {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    background: var(--surface-dim);
    color: var(--on-surface);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
}
.btn-free:hover { background: var(--surface-container); }

.btn-subscriber {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
}
.btn-subscriber:hover { background: var(--primary-dark); }


/* ==================== Forms ==================== */
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin-bottom: 0.3rem;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--surface);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 12%, transparent);
}

/* Search form */
.search-form {
    display: flex;
    gap: 0.75rem;
}
.search-form input[type="text"],
.search-form input[type="number"] {
    flex: 1;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.search-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 12%, transparent);
}

/* Filter grid */
.filter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem 1.5rem;
}

/* Checkbox styling */
.model-checkboxes, .checkbox-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    background: var(--surface-container-low);
    padding: 0.4rem 0.75rem;
    font-size: 0.82rem;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}
.checkbox-grid label:hover {
    background: color-mix(in srgb, var(--primary-container) 30%, white);
    border-color: var(--primary);
}


/* ==================== Alerts ==================== */
.alert {
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    margin-bottom: 1rem;
}
.alert-error {
    background: var(--error-container);
    color: var(--on-error-container);
    border: 1px solid color-mix(in srgb, var(--error) 30%, transparent);
}
.alert-success {
    background: var(--accent-container);
    color: var(--accent-dark);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

/* Flash messages */
.flash-success {
    background: var(--accent-container);
    color: var(--accent-dark);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    margin-bottom: 1rem;
}
.flash-error {
    background: var(--error-container);
    color: var(--on-error-container);
    border: 1px solid color-mix(in srgb, var(--error) 30%, transparent);
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    margin-bottom: 1rem;
}

/* Limit / upgrade banners */
.limit-warning {
    background: #fff8e1;
    border: 1px solid #f9a825;
    color: #f57f17;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}
.upgrade-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--tertiary) 100%);
    color: white;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
}
.upgrade-banner a {
    color: white;
    font-weight: 600;
    text-decoration: underline;
}


/* ==================== Score / Progress Bars ==================== */
.score-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.bar-bg {
    flex: 1;
    background: var(--surface-container);
    border-radius: var(--radius-pill);
    height: 5px;
    min-width: 40px;
}
.bar-fill {
    background: var(--primary);
    border-radius: var(--radius-pill);
    height: 5px;
}
.bar-fill.green { background: var(--accent); }

/* Usage bars */
.usage-bar-fill.low  { background: var(--accent); }
.usage-bar-fill.mid  { background: #f9a825; }
.usage-bar-fill.high { background: var(--error); }


/* ==================== AI Model Cards ==================== */
.synthesis-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    border-left: 4px solid var(--outline-variant);
    margin-bottom: 1rem;
    transition: box-shadow 0.15s;
}
.synthesis-card:hover { box-shadow: var(--shadow-md); }

.synthesis-card.card-claude    { border-color: #c4a56e; background: #fdfbf7; }
.synthesis-card.card-gpt       { border-color: #10a37f; background: #f7fdfb; }
.synthesis-card.card-perplexity { border-color: #1a56db; background: #f7faff; }
.synthesis-card.card-gemini    { border-color: #5c6bc0; background: #f8f8ff; }
.synthesis-card.card-aws       { border-color: #ff9900; background: #fffbf2; }

/* wiki-ask synthesis card variants */
.synthesis-card.claude    { border-color: #c4a56e; background: #fdfbf7; }
.synthesis-card.gpt       { border-color: #10a37f; background: #f7fdfb; }
.synthesis-card.perplexity { border-color: #1a56db; background: #f7faff; }
.synthesis-card.gemini    { border-color: #5c6bc0; background: #f8f8ff; }
.synthesis-card.aws       { border-color: #ff9900; background: #fffbf2; }

.model-badge {
    display: inline-block;
    padding: 0.2em 0.6em;
    border-radius: var(--radius-pill);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.model-badge.claude    { background: #e8d5b7; color: #7c4d1e; }
.model-badge.gpt       { background: #d4f5e6; color: #0d6e48; }
.model-badge.perplexity { background: #d1e7ff; color: #1a56db; }
.model-badge.gemini    { background: #e8eaf6; color: #283593; }
.model-badge.aws       { background: #fff0d4; color: #b35c00; }

.model-label {
    color: var(--primary);
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 600;
}

.findings-list { list-style: none; padding: 0; }
.findings-list li { padding: 0.25rem 0 0.25rem 1.1rem; position: relative; }
.findings-list li::before {
    content: "\2022";
    color: var(--primary);
    font-weight: 700;
    position: absolute;
    left: 0;
}


/* ==================== Vendor Compare ==================== */
.vendor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.25rem;
}
.vendor-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow 0.15s;
}
.vendor-card:hover { box-shadow: var(--shadow-md); }
.vendor-card-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    color: var(--on-primary);
    padding: 0.85rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.assessment-section { padding: 0.5rem 0; }
.assessment-section.strengths h4  { color: var(--accent-dark); }
.assessment-section.weaknesses h4 { color: var(--error); }
.assessment-section ul { list-style: none; padding: 0; }
.assessment-section li { padding: 0.2rem 0 0.2rem 1.2rem; position: relative; font-size: 0.85rem; }
.assessment-section.strengths li::before  { content: "+"; color: var(--accent); font-weight: 700; position: absolute; left: 0; }
.assessment-section.weaknesses li::before { content: "\2212"; color: var(--error); font-weight: 700; position: absolute; left: 0; }

.sources-table {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.sources-table thead th {
    background: var(--on-primary-container);
    color: var(--on-primary);
}
.sources-table .ref-num { color: var(--primary); font-weight: 700; }

.methodology-note, .how-it-works {
    background: color-mix(in srgb, var(--primary-container) 25%, white);
    border-left: 3px solid var(--primary);
    border-radius: 4px;
    padding: 0.85rem 1.1rem;
    font-size: 0.82rem;
    margin-bottom: 1rem;
}


/* ==================== Wiki ==================== */
.page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}
.page-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.15s;
}
.page-card:hover { box-shadow: var(--shadow-md); }
.page-card h3 a { color: var(--on-primary-container); text-decoration: none; }
.page-card h3 a:hover { color: var(--primary); }

.tag {
    display: inline-block;
    background: var(--surface-dim);
    color: var(--on-surface-variant);
    padding: 0.15em 0.5em;
    border-radius: 4px;
    font-size: 0.7rem;
}
.source-count { color: var(--primary); font-weight: 500; font-size: 0.8rem; }
.card-meta { color: var(--outline); font-size: 0.72rem; margin-top: auto; }

/* Wiki content */
.wiki-content {
    line-height: 1.7;
    font-size: 0.92rem;
    color: var(--on-surface);
}
.wiki-content h1, .wiki-content h2, .wiki-content h3 {
    font-family: var(--font-display);
    color: var(--on-primary-container);
    margin: 1.25rem 0 0.5rem;
}
.wiki-content blockquote {
    border-left: 3px solid var(--primary);
    background: color-mix(in srgb, var(--primary-container) 20%, white);
    color: var(--on-surface-variant);
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
    border-radius: 0 4px 4px 0;
}

/* Provenance table */
.provenance-table { font-size: 0.82rem; }
.provenance-table th { background: var(--surface-dim); color: var(--outline); text-transform: uppercase; }

/* Contradictions */
.contradiction-card {
    border-left: 4px solid var(--error);
    background: var(--error-container);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0.85rem 1rem;
    margin-bottom: 0.75rem;
}
.contradiction-header a { color: var(--primary); text-decoration: none; }
.contradiction-header a:hover { text-decoration: underline; }
.contradiction-date { color: var(--outline); font-size: 0.72rem; margin-left: auto; }

.claims {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.claim-prior-box { background: var(--surface-dim); border: 1px solid var(--outline-variant); border-radius: var(--radius-sm); padding: 0.75rem; }
.claim-new-box   { background: var(--error-container); border: 1px solid color-mix(in srgb, var(--error) 25%, transparent); border-radius: var(--radius-sm); padding: 0.75rem; }
.claim-prior-label, .claim-prior { color: var(--outline); }
.claim-new-label, .claim-new     { color: var(--error); }

.related-link {
    display: inline-block;
    background: color-mix(in srgb, var(--primary-container) 30%, white);
    color: var(--primary);
    padding: 0.35em 0.75em;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 0.82rem;
    transition: background 0.15s;
}
.related-link:hover { background: var(--primary-container); }

.revision-num { color: var(--primary); font-weight: 600; }

details summary { cursor: pointer; transition: color 0.15s; }
details summary:hover { color: var(--primary); }


/* ==================== Breadcrumb ==================== */
.breadcrumb {
    font-size: 0.78rem;
    color: var(--outline);
    margin-bottom: 1rem;
}
.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}
.breadcrumb a:hover { text-decoration: underline; }


/* ==================== Auth Pages (login, register, choose-path, access-denied) ==================== */
.login-card, .register-card, .choose-card, .denied-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
}
.login-card h2, .register-card h2, .choose-card h2, .denied-card h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--on-primary-container);
    margin-bottom: 0.5rem;
    text-align: center;
}
.login-card .subtitle, .register-card .subtitle, .choose-card .subtitle {
    font-size: 0.85rem;
    color: var(--outline);
    text-align: center;
    margin-bottom: 1.5rem;
}

.login-button, .register-button {
    display: block;
    width: 100%;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    margin-top: 1.25rem;
    text-align: center;
}

.login-footer, .register-footer {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.8rem;
    color: var(--outline);
}
.login-footer a, .register-footer a {
    color: var(--primary);
    text-decoration: none;
}
.login-footer a:hover, .register-footer a:hover { text-decoration: underline; }

.denied-card .icon {
    font-size: 3rem;
    color: var(--error);
}
.back-link {
    display: inline-block;
    background: var(--primary);
    color: var(--on-primary);
    text-decoration: none;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: background 0.15s;
}
.back-link:hover { background: var(--primary-dark); }

/* Path option cards */
.path-option {
    flex: 1;
    min-width: 200px;
    border: 2px solid var(--outline-variant);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.15s, background 0.15s;
}
.path-option.highlight {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary-container) 20%, white);
}

/* Demo countdown */
.demo-countdown {
    background: #fff8e1;
    border: 1px solid #f9a825;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
}


/* ==================== Pricing ==================== */
.tier-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}
.tier-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.15s;
}
.tier-card:hover { box-shadow: var(--shadow-md); }
.tier-card.subscriber {
    border: 2px solid var(--primary);
    position: relative;
}
.tier-card .tier-badge-top {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--on-primary);
    padding: 0.25em 0.75em;
    border-radius: var(--radius-pill);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
}
.tier-name {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--on-primary-container);
}
.tier-price {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.comparison-table {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.comparison-table th {
    background: var(--surface-dim);
    color: var(--outline);
    font-weight: 600;
}
.check { color: var(--accent); font-weight: bold; }
.cross { color: var(--outline-variant); font-weight: bold; }


/* ==================== News Listing ==================== */
.topic-header {
    background: color-mix(in srgb, var(--primary-container) 20%, white);
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.topic-summary {
    background: color-mix(in srgb, var(--primary-container) 12%, white);
    border-top: 1px solid var(--surface-dim);
    padding: 0.875rem 1.25rem;
    font-size: 0.85rem;
}

.archive-banner {
    background: linear-gradient(135deg, var(--primary) 0%, var(--tertiary) 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}
.archive-banner a { color: white; font-weight: 600; text-decoration: underline; }

.publication-cell {
    color: var(--on-surface-variant);
    font-size: 0.8rem;
    font-style: italic;
    white-space: nowrap;
}


/* ==================== Research ==================== */
.query-link, .edit-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}
.query-link:hover, .edit-link:hover { text-decoration: underline; }

.citation-count { font-weight: 600; color: var(--on-primary-container); }
.run-id { font-family: var(--font-mono); font-size: 0.72rem; color: var(--outline); }
.timestamp { color: var(--outline); font-size: 0.8rem; white-space: nowrap; }

/* Detail fields */
.field-grid {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 0.75rem 1rem;
}
.field-label {
    color: var(--outline);
    text-transform: uppercase;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}
.field-value { color: var(--on-primary-container); font-size: 0.9rem; }
.field-value.mono { font-family: var(--font-mono); font-size: 0.8rem; color: var(--on-surface-variant); }

.stat-pill {
    background: color-mix(in srgb, var(--primary-container) 25%, white);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0.4rem 0.875rem;
}
.stat-pill small { color: var(--outline); text-transform: uppercase; font-size: 0.68rem; }


/* ==================== Source Cards ==================== */
.source-card, .result-card {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.25rem;
    transition: box-shadow 0.15s;
}
.source-card:hover, .result-card:hover { box-shadow: var(--shadow-md); }

.source-meta .topic-badge {
    background: var(--primary-container);
    color: var(--primary-dark);
    padding: 0.15em 0.55em;
    border-radius: var(--radius-pill);
    font-size: 0.7rem;
    font-weight: 600;
}


/* ==================== Article list ==================== */
.title-cell a {
    color: var(--on-primary-container);
    text-decoration: none;
    font-weight: 500;
}
.title-cell a:hover { color: var(--primary); text-decoration: underline; }

.meta { color: var(--outline); font-size: 0.75rem; }
.body-preview { color: var(--on-surface-variant); font-size: 0.75rem; max-height: 3.4em; overflow: hidden; }

/* Sort arrows */
.sort-arrow { color: var(--outline); cursor: pointer; transition: color 0.15s; }
.sort-arrow:hover { color: var(--primary); }
.sort-arrow.active { color: var(--primary); font-weight: 700; }


/* ==================== Newsletter Editor ==================== */
.meta-bar {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.5rem;
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
}
.meta-label {
    color: var(--outline);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.editor-section {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.25rem 1.5rem;
}


/* ==================== Misc ==================== */
.empty {
    color: var(--outline-variant);
    font-style: italic;
    padding: 0.75rem 0;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.filter-bar {
    background: var(--surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}
.filter-bar button {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}
.filter-bar button:hover { background: var(--primary-dark); }
.filter-bar a.clear-btn { color: var(--outline); font-size: 0.8rem; }
.filter-bar a.clear-btn:hover { color: var(--on-surface); }

/* Digest page items */
.page-item { display: flex; gap: 0.75rem; border-bottom: 1px solid var(--surface-dim); padding: 0.6rem 0; }
.page-rev { color: var(--primary); font-size: 0.7rem; font-weight: 500; }

/* Contradiction claims (digest view) */
.claim.prior     { background: var(--error-container); border-left: 3px solid var(--error); padding: 0.5rem 0.75rem; border-radius: 0 4px 4px 0; }
.claim.new-claim  { background: var(--accent-container); border-left: 3px solid var(--accent); padding: 0.5rem 0.75rem; border-radius: 0 4px 4px 0; }

/* Wiki-ask source items */
.wiki-source-item { display: flex; gap: 0.75rem; padding: 0.6rem 0; border-bottom: 1px solid var(--surface-dim); }
.source-num { color: var(--primary); font-weight: 700; }

/* Hint box */
.hint-box {
    background: color-mix(in srgb, var(--primary-container) 25%, white);
    border: 1px solid var(--outline-variant);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

/* Monospace text */
.mono, code { font-family: var(--font-mono); }

/* Loading spinner — hidden by default, visible when parent has .loading */
.spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
    margin-right: 0.4rem;
}
.loading .spinner { display: inline-block; }
.loading { pointer-events: none; opacity: 0.8; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 640px) {
    .claims { grid-template-columns: 1fr; }
    .tier-grid { grid-template-columns: 1fr; }
    .filter-grid { grid-template-columns: 1fr; }
    .stat-row { grid-template-columns: 1fr 1fr; }
    nav { padding: 0 0.75rem; gap: 0; }
    header { padding: 1rem 1.25rem; }
}

/* Scrollbar hide utility */
.scrollbar-none::-webkit-scrollbar { display: none; }
.scrollbar-none { -ms-overflow-style: none; scrollbar-width: none; }