/* Lexometrica — Unified styles */

:root {
    --color-bg: #09090b;
    --color-bg-elevated: #18181b;
    --color-bg-subtle: #27272a;
    --color-text: #f4f4f5;
    --color-text-muted: #a1a1aa;
    --color-accent: #2563eb;
    --color-border: #3f3f46;
    --font-system: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    --max-width: 72rem;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-system);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    position: relative;
}

/* Hero — Landing (index, ru) */
body.landing .hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-xl) 0;
    position: relative;
}

body.landing .header-row {
    margin-bottom: var(--space-lg);
}

body.landing .logo {
    font-size: clamp(2.5rem, 8vw, 5rem);
}

body.landing .headline {
    font-size: clamp(1.75rem, 5vw, 3.5rem);
}

body.landing .subheadline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--space-md);
}

body.landing .section-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

body.landing .section-text {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
}

/* Hero — Bench */
body.bench .hero {
    padding: var(--space-xl) 0 var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

body.bench .header-row {
    margin-bottom: var(--space-md);
}

body.bench .logo {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: var(--space-sm);
}

body.bench .headline {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

body.bench .subheadline {
    font-size: clamp(0.9375rem, 1.5vw, 1.125rem);
}

body.bench .subheadline em {
    font-style: italic;
    color: var(--color-text-muted);
}

body.bench .badge {
    margin-top: var(--space-md);
}

body.bench .section-title {
    font-size: clamp(1.25rem, 3vw, 2rem);
}

body.bench .section-text {
    font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
}

/* Header navigation */
.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.main-nav a {
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.main-nav a.nav-link-muted {
    color: var(--color-text-muted);
}

.main-nav a.nav-link-muted:hover {
    color: var(--color-text);
}

.main-nav a.nav-link-primary {
    color: var(--color-text);
    font-weight: 500;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    text-decoration: none;
    margin-bottom: var(--space-md);
    display: inline-block;
    transition: color 0.2s ease;
}

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

.nav-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 500;
    padding: 0.15rem 0.4rem;
    margin-left: 0.35rem;
    border-radius: 4px;
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    vertical-align: middle;
}

/* Logo */
.logo {
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--color-text);
    text-decoration: none;
}

a.logo:hover {
    color: var(--color-text);
}

.logo span {
    color: var(--color-accent);
}

/* Headline, subheadline */
.headline {
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.subheadline {
    color: var(--color-text-muted);
    max-width: 42rem;
}

/* Badge */
.badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.badge::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
    margin-right: var(--space-xs);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Section Base */
section {
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.section-title {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    max-width: 48rem;
}

.section-text {
    color: var(--color-text-muted);
    max-width: 48rem;
    line-height: 1.7;
}

/* Problem Section */
.problem .highlight {
    color: var(--color-text);
    font-weight: 500;
}

.stat {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--color-accent);
    line-height: 1;
    margin: var(--space-md) 0;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
}

/* Architecture Section */
.architecture-grid {
    display: grid;
    gap: 1px;
    background-color: var(--color-border);
    margin-top: var(--space-lg);
}

.arch-card {
    background-color: var(--color-bg);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.arch-card:hover {
    background-color: var(--color-bg-elevated);
}

.arch-index {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

.arch-title {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.arch-tech {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

@media (min-width: 640px) {
    .architecture-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Founder Section */
.founder-grid {
    display: grid;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

@media (min-width: 768px) {
    .founder-grid {
        grid-template-columns: 1fr 2fr;
        align-items: start;
    }
}

.founder-title {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.founder-title span {
    display: block;
    color: var(--color-text-muted);
    font-weight: 400;
}

.founder-bio {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.founder-bio strong {
    color: var(--color-text);
    font-weight: 500;
}

.credentials {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.credential {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

/* Results Table */
.results-table-wrapper {
    margin-top: var(--space-md);
    border: 1px solid var(--color-border);
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.results-table th,
.results-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.results-table th {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    font-weight: 500;
    vertical-align: bottom;
    line-height: 1.4;
}

.results-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.results-table th.sortable::after {
    content: '\00a0↕';
    opacity: 0.5;
    margin-left: 0.25em;
}

.results-table th.sort-asc::after {
    content: '\00a0↑';
    opacity: 1;
}

.results-table th.sort-desc::after {
    content: '\00a0↓';
    opacity: 1;
}

.results-table tbody tr:hover {
    background-color: var(--color-bg-elevated);
}

.results-table tbody tr:last-child td {
    border-bottom: none;
}

.provider-name {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.model-name {
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

.score-value {
    font-family: var(--font-mono);
    font-weight: 500;
}

.score-high {
    color: #22c55e;
}

.score-mid {
    color: var(--color-accent);
}

.score-low {
    color: #f97316;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.75rem;
    height: 1.75rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.rank-badge.rank-1 {
    background-color: rgba(34, 197, 94, 0.15);
    border-color: rgba(34, 197, 94, 0.4);
    color: #22c55e;
}

.rank-badge.rank-2 {
    background-color: rgba(37, 99, 235, 0.15);
    border-color: rgba(37, 99, 235, 0.4);
    color: var(--color-accent);
}

.rank-badge.rank-3 {
    background-color: rgba(249, 115, 22, 0.15);
    border-color: rgba(249, 115, 22, 0.4);
    color: #f97316;
}

/* Metrics */
.metrics-grid {
    display: grid;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (min-width: 640px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.metric-card {
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    padding: var(--space-md);
}

.metric-card:hover {
    border-color: var(--color-accent);
}

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.metric-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.metrics-block {
    padding-top: 6rem;
}

/* Decorative Elements */
.divider {
    width: 3rem;
    height: 2px;
    background-color: var(--color-accent);
    margin: var(--space-md) 0;
}

/* Footer */
footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    gap: var(--space-md);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.footer-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

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

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

.copyright {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

/* Showcase — Case Study layout */
.showcase-hero {
    padding: var(--space-xl) 0 var(--space-lg);
}

.showcase-hero .hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.showcase-hero .hero-badge::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
    margin-right: var(--space-xs);
    animation: pulse 2s ease-in-out infinite;
}

.showcase-hero .headline {
    margin-bottom: var(--space-xs);
}

.showcase-hero .headline-tagline {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.showcase-hero .subheadline {
    color: var(--color-text-muted);
    max-width: 42rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text);
    background: transparent;
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: border-color 0.2s ease, color 0.2s ease;
}

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

.showcase-section {
    padding: 4rem 0;
    border-top: 1px solid var(--color-border);
}

.showcase-section:first-of-type {
    border-top: none;
}

.problem-solution-grid {
    display: grid;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (min-width: 640px) {
    .problem-solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.case-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    padding: var(--space-md);
}

.case-card h3 {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.case-card p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.hood-grid {
    display: grid;
    gap: 1px;
    background: var(--color-border);
    margin-top: var(--space-lg);
}

@media (min-width: 640px) {
    .hood-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .hood-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .hood-grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

.traction-grid .traction-card-full {
    grid-column: 1 / -1;
}

.hood-block {
    background: var(--color-bg);
    padding: var(--space-md);
}

.hood-block:hover {
    background: var(--color-bg-elevated);
}

.hood-block .hood-label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.hood-block .hood-tech {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text);
    font-weight: 500;
}

.hood-block .hood-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-top: var(--space-xs);
}

.recognition-grid {
    display: grid;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.recognition-item {
    display: block;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    color: var(--color-text);
    transition: border-color 0.2s ease;
}

.recognition-item:hover {
    border-color: var(--color-accent);
}

.recognition-item .rec-date {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.25rem;
}

.recognition-item .rec-title {
    font-size: 0.9375rem;
    font-weight: 500;
}

.recognition-item .rec-source {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* 404 — Cloudflare Pages serves /404.html with HTTP 404 */
body.page-error .error-hero {
    min-height: 85vh;
    padding-bottom: var(--space-lg);
}

body.page-error .error-hero .section-label {
    margin-bottom: var(--space-sm);
}

body.page-error .error-hero .stat {
    margin-top: 0;
    margin-bottom: var(--space-md);
}

body.page-error .error-actions {
    margin-top: var(--space-lg);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
}

body.page-error .error-actions-primary {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding: var(--space-xs) var(--space-md);
    border: 1px solid var(--color-accent);
    color: var(--color-text);
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

body.page-error .error-actions-primary:hover {
    background-color: rgba(37, 99, 235, 0.12);
    border-color: var(--color-accent);
    color: var(--color-text);
}

body.page-error .error-actions-secondary {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: color 0.2s ease;
}

body.page-error .error-actions-secondary:hover {
    color: var(--color-accent);
}

/* Selection */
::selection {
    background-color: var(--color-accent);
    color: var(--color-text);
}