/* 
    VANGUARD MEDICAL DESIGN
    Aesthetic: Brutalist Swiss Typographic Editorial
    Color Palette: Off-white #F8F8F4, Pitch Black #0E0E0E, Accents of Deep Terracotta #B83A20
*/

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
    --bg-base: #F8F8F4;
    /* High-end off-white art-gallery feel */
    --bg-dark: #0E0E0E;
    /* True editorial black */
    --c-text: #0E0E0E;
    --c-accent: #B83A20;
    /* Deep Medical Terra-Rossa */
    --c-gray: #666666;
    --c-light: #F8F8F4;

    --border-w: 1px;
    --border-color: rgba(14, 14, 14, 0.15);
    --border-color-light: rgba(248, 248, 244, 0.15);

    --f-sans: 'Inter', sans-serif;
    --f-serif: 'Instrument Serif', serif;
    --f-mono: 'JetBrains Mono', monospace;

    --space-s: 1rem;
    --space-m: 2.5rem;
    --space-l: 6rem;
    --space-xl: 12rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-base);
    color: var(--c-text);
    font-family: var(--f-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Typography Base */
.serif {
    font-family: var(--f-serif);
    font-style: italic;
    font-weight: normal;
}

.mono {
    font-family: var(--f-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

h1,
h2,
h3,
h4 {
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Utilities */
.bg-dark {
    background-color: var(--bg-dark);
    color: var(--c-light);
}

.text-white {
    color: var(--c-light);
}

.text-gray {
    color: var(--c-gray);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-l);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-m);
}

.mt-large {
    margin-top: var(--space-l);
}

/* Dividers */
.divider {
    width: 100%;
    height: var(--border-w);
    background-color: var(--border-color);
}

.bg-dark .divider {
    background-color: var(--border-color-light);
}

/* Navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-m);
    border-bottom: var(--border-w) solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-base);
    z-index: 100;
}

.nav-left {
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.nav-left span {
    color: var(--c-accent);
    font-weight: 400;
}

.nav-right {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-family: var(--f-mono);
    font-size: 0.8rem;
    font-weight: 700;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--c-accent);
}

/* Hero Section */
.hero {
    padding: var(--space-l) var(--space-m);
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.huge-title {
    font-size: clamp(4rem, 15vw, 15rem);
    text-transform: uppercase;
    letter-spacing: -0.05em;
    margin-left: -0.05em;
    /* Optical alignment */
}

.hero-bottom {
    margin-top: var(--space-xl);
    border-top: var(--border-w) solid var(--border-color);
    padding-top: var(--space-m);
    align-items: end;
}

.tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--c-text);
    border-radius: 999px;
    margin-bottom: 2rem;
}

.hero-desc {
    font-size: 1.5rem;
    max-width: 35rem;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    justify-content: flex-end;
}

.stat-block {
    text-align: right;
}

.stat-number {
    display: block;
    font-family: var(--f-serif);
    font-size: 6rem;
    color: var(--c-accent);
    line-height: 1;
}

.stat-label {
    font-family: var(--f-mono);
    font-weight: 700;
}

/* Sections */
.section {
    padding: var(--space-l) var(--space-m) var(--space-xl) var(--space-m);
}

.section-header {
    border-bottom: var(--border-w) solid var(--border-color);
    padding-bottom: var(--space-l);
    align-items: start;
}

.bg-dark .section-header {
    border-color: var(--border-color-light);
}

.section-title {
    font-size: 3rem;
    text-transform: uppercase;
}

.section-title span {
    font-size: 4rem;
    display: block;
    margin-top: -0.5rem;
    color: var(--c-gray);
}

.bg-dark .section-title span {
    color: #888;
}

.section-intro {
    font-size: 1.5rem;
    max-width: 38rem;
    font-weight: 300;
    margin-top: 1rem;
}

/* Cards (Pathology) */
.card {
    border-top: var(--border-w) solid var(--border-color);
    padding-top: var(--space-m);
}

.card-num {
    margin-bottom: 1rem;
    color: var(--c-accent);
    font-weight: 700;
}

.card-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.card-text {
    font-size: 1.125rem;
    color: var(--c-gray);
}

/* Russia Timeline */
.russia-content {
    display: flex;
    justify-content: flex-end;
    margin-top: var(--space-l);
}

.timeline {
    width: 60%;
    border-left: var(--border-w) solid var(--border-color-light);
    padding-left: var(--space-l);
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 0;
    width: 11px;
    height: 11px;
    background-color: var(--c-accent);
    border-radius: 50%;
}

.timeline-date {
    color: var(--c-accent);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.timeline-title {
    font-size: 3rem;
    margin-bottom: 2rem;
}

.timeline-text {
    font-size: 1.25rem;
    font-weight: 300;
    color: #b0b0b0;
    margin-bottom: 3rem;
}

.timeline-text strong {
    color: var(--c-light);
    font-weight: 500;
}

/* Catalog (Global Research) */
.catalog-list {
    margin-top: var(--space-l);
}

.catalog-item {
    border-top: var(--border-w) solid var(--border-color);
    padding: var(--space-m) 0;
    display: grid;
    grid-template-columns: 2fr 4fr 3fr;
    gap: var(--space-m);
    transition: background-color 0.3s;
}

.catalog-item:hover {
    background-color: #EFEFE9;
}

.catalog-meta {
    color: var(--c-gray);
    font-weight: 700;
}

.catalog-title {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.catalog-desc {
    font-size: 1.125rem;
    color: var(--c-gray);
}

/* Links */
.links-row {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.bold-link {
    font-family: var(--f-mono);
    font-weight: 700;
    font-size: 0.8rem;
    border-bottom: 1px solid currentColor;
    padding-bottom: 4px;
    display: inline-block;
    transition: color 0.3s;
    margin-bottom: 1rem;
}

.bold-link:hover {
    color: var(--c-accent);
}

/* Footer */
.footer {
    background-color: var(--bg-dark);
    color: var(--c-light);
    padding: var(--space-l) var(--space-m);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--space-m);
    align-items: end;
}

.footer-brand {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.05em;
}

.footer-brand span {
    color: var(--c-accent);
    font-weight: 400;
}

.footer-info {
    font-size: 1.125rem;
    color: #888;
}

.footer-copy {
    text-align: right;
    color: #555;
    font-weight: 700;
}

/* Responsive */
@media (max-width: 1024px) {

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-stats {
        justify-content: flex-start;
        margin-top: 3rem;
    }

    .timeline {
        width: 100%;
        border-left: none;
        padding-left: 0;
        padding-top: 2rem;
        border-top: 1px solid #333;
    }

    .timeline::before {
        display: none;
    }

    .catalog-item {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: left;
    }

    .footer-copy {
        text-align: left;
    }

    .hidden-mobile {
        display: none;
    }
}