/* Arbury Labs — Landing Page Prototypes — Shared Styles */

:root {
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  --bg: #140d0e;
  --bg-elevated: #1c1214;
  --surface: #25181a;
  --surface-hover: #322123;
  --text: #f8f4ed;
  --text-muted: #c9b8a8;
  --text-subtle: #8f7e70;
  --accent: #8C1515;
  --accent-light: #c45a5a;
  --accent-dark: #6B0F1A;
  --accent-glow: rgba(140, 21, 21, 0.35);
  --success: #22c55e;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1160px;
  --section-pad: clamp(4.5rem, 10vw, 8rem);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8f4ed;
    --bg-elevated: #efe8dd;
    --surface: #ffffff;
    --surface-hover: #f5efe6;
    --text: #2E2D29;
    --text-muted: #5c4f48;
    --text-subtle: #8f7e70;
    --border: rgba(46, 45, 41, 0.08);
    --shadow: 0 24px 80px rgba(46, 45, 41, 0.12);
    --accent-glow: rgba(140, 21, 21, 0.18);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 100;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(100% - 2.5rem, var(--max-width));
  margin-inline: auto;
}

/* Header / Nav */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.scrolled {
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-color: var(--border);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

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

.nav-links {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--text);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.header-cta:hover,
.header-cta:focus {
  background: var(--accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

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

.header-cta--secondary:hover,
.header-cta--secondary:focus {
  background: var(--surface-hover);
  box-shadow: none;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100svh;
  padding: calc(var(--section-pad) + 72px) 0 var(--section-pad);
  overflow: hidden;
}

.video-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.video-bg video,
.video-bg .video-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(140, 21, 21, 0.22), transparent 45%),
              linear-gradient(to bottom, rgba(20, 13, 14, 0.55), rgba(20, 13, 14, 0.92));
  z-index: 1;
}

@media (prefers-color-scheme: light) {
  .video-overlay {
    background: radial-gradient(circle at 30% 20%, rgba(140, 21, 21, 0.12), transparent 45%),
                linear-gradient(to bottom, rgba(248, 244, 237, 0.75), rgba(248, 244, 237, 0.96));
  }
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent-light);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0 0 1.5rem;
  max-width: 900px;
}

.hero h1 em {
  color: var(--accent-light);
  font-style: normal;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 0 2.25rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 32px var(--accent-glow);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--surface-hover);
  transform: translateY(-2px);
}

/* Sections */
section {
  padding: var(--section-pad) 0;
}

section.alt {
  background: var(--bg-elevated);
}

.section-header {
  max-width: 720px;
  margin-bottom: 3rem;
}

.section-eyebrow {
  display: inline-block;
  color: var(--accent-light);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin: 0;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(99, 102, 241, 0.25);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-glow);
  color: var(--accent-light);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.card h3 {
  font-size: 1.25rem;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.card p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.98rem;
}

/* Feature row */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-row.reverse {
  direction: rtl;
}

.feature-row.reverse > * {
  direction: ltr;
}

.feature-media {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  aspect-ratio: 16 / 10;
  display: grid;
  place-items: center;
}

.feature-media img,
.feature-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.feature-content p {
  color: var(--text-muted);
  margin: 0 0 1.25rem;
}

.bullet-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.bullet-list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
}

.bullet-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}

.stat {
  text-align: center;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat-number {
  display: block;
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--accent-light);
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Testimonials */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.testimonial {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial blockquote {
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
  line-height: 1.55;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-glow);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  font-weight: 700;
  flex-shrink: 0;
}

.author-info strong {
  display: block;
  color: var(--text);
  font-size: 0.95rem;
}

.author-info span {
  color: var(--text-subtle);
  font-size: 0.85rem;
}

/* CTA banner */
.cta-banner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  padding: clamp(3rem, 7vw, 5rem);
  text-align: center;
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

.cta-banner p {
  max-width: 560px;
  margin: 0 auto 1.75rem;
  opacity: 0.92;
  font-size: 1.1rem;
}

.cta-banner .btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
}

.cta-banner .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Footer */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

/* Responsive */
@media (max-width: 800px) {
  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.25rem;
    display: none;
  }

  .site-nav.open {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.75rem;
  }

  .menu-toggle {
    display: block;
  }

  .header-cta {
    display: none;
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .feature-row.reverse {
    direction: ltr;
  }
}

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

  html {
    scroll-behavior: auto;
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Print */
@media print {
  .site-header,
  .video-bg,
  .cta-row,
  .cta-banner .btn {
    display: none !important;
  }

  .hero {
    min-height: auto;
    padding-top: 2rem;
  }
}