/* ==========================================================
   Deepfake Detection Beyond the Lab — project page

   Built on the Academic Project Page Template (adopted from the
   Nerfies project page). Palette and type follow that template;
   the accent is Vector Institute's.
   ========================================================== */

:root {
    --primary-color: #667eea;
    --primary-hover: #5a67d8;
    --secondary-color: #64748b;
    --accent-color: #764ba2;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --background-primary: #ffffff;
    --background-secondary: #f8fafc;
    --background-accent: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    background-color: var(--background-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.title,
.subtitle,
h1, h2, h3, h4 {
    font-family: 'Inter', sans-serif !important;
    color: var(--text-primary);
}

/* ---------- Hero ---------- */

.publication-title {
    font-family: 'Inter', sans-serif !important;
    font-weight: 800 !important;
    color: var(--text-primary) !important;
    margin-bottom: 1.25rem !important;
    line-height: 1.1 !important;
}

.publication-subtitle {
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.publication-authors {
    font-family: 'Inter', sans-serif !important;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.author-block {
    display: inline-block;
    margin-right: 0.5rem;
}

.publication-links {
    margin-top: 1.5rem;
}

.link-block {
    display: inline-block;
    margin: 0.25rem;
}

.vector-mark {
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.vector-mark img {
    height: 94px;
    width: auto;
    display: inline-block;
}

/* Both logo files are trimmed to their artwork. AIXPERT is the wider
   lockup (1.66:1 vs 1.11:1), so it is set slightly shorter to give the
   two the same visual footprint. */
.vector-mark img[alt="AIXPERT"] {
    height: 92px;
}

/* ---------- Buttons ---------- */

.button {
    border-radius: var(--border-radius) !important;
    font-weight: 600 !important;
    transition: var(--transition) !important;
    border: 2px solid transparent !important;
}

.button.is-dark {
    background: var(--text-primary) !important;
    border: none !important;
    color: #fff !important;
    box-shadow: var(--shadow-md);
}

.button.is-dark:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color) !important;
}

.button.is-dark:active {
    transform: translateY(0);
    box-shadow: var(--shadow-md);
}

.button[disabled],
.button.is-static-note {
    background: var(--background-accent) !important;
    color: var(--text-secondary) !important;
    box-shadow: none;
    cursor: default;
    border: 1px dashed var(--border-color) !important;
}

.button[disabled]:hover,
.button.is-static-note:hover {
    transform: none;
    background: var(--background-accent) !important;
}

/* ---------- Sections ---------- */

.is-light {
    background: var(--background-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section .title.is-3 {
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.content p {
    color: var(--text-primary);
}

/* ---------- Teaser and figures ---------- */

.publication-banner {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    margin: 1.5rem 0;
}

.publication-banner img,
.figure-card img {
    display: block;
    width: 100%;
    height: auto;
}

.figure-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.figure-card .caption,
.publication-banner + .caption,
.caption {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 0.85rem 1rem;
    margin: 0;
}

/* ---------- A1–A5 cards ---------- */

.assumption-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem 1.1rem;
    height: 100%;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.assumption-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.assumption-key {
    display: inline-block;
    font-weight: 800;
    font-size: 0.8rem;
    letter-spacing: 0.6px;
    color: #fff;
    background: var(--gradient-primary);
    border-radius: 999px;
    padding: 2px 11px;
    margin-bottom: 0.6rem;
}

.assumption-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.assumption-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* ---------- Stats ---------- */

.stat-row {
    margin-top: 0.5rem;
}

.stat .stat-value {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
}

.stat .stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ---------- BibTeX ---------- */

#BibTeX pre {
    background: var(--background-accent);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    font-size: 0.85rem;
    line-height: 1.6;
    overflow-x: auto;
    color: var(--text-primary);
}

/* ---------- Footer ---------- */

.footer {
    background: var(--background-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 1.5rem;
}

.footer .content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer a {
    color: var(--primary-color);
}

/* ---------- Responsive ---------- */

@media screen and (max-width: 768px) {
    .publication-title {
        font-size: 2rem !important;
        line-height: 1.2 !important;
    }

    .publication-authors {
        font-size: 0.95rem !important;
    }

    .hero-body {
        padding: 3rem 1rem 2rem;
    }

    .vector-mark img {
        height: 71px;
    }

    .vector-mark img[alt="AIXPERT"] {
        height: 70px;
    }

    .link-block {
        display: block;
    }

    .link-block .button {
        width: 100%;
    }

    .stat .stat-value {
        font-size: 1.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .assumption-card:hover,
    .button.is-dark:hover {
        transform: none;
    }
}