/* ===================================================
   BRUCE WANG - CYBERSECURITY PORTFOLIO
   Art direction: dark technical, electric-blue accent,
   monospaced details, precise grid layout
   =================================================== */

/* ─── DESIGN TOKENS ─────────────────────────────── */
:root {
  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    7rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem;  --space-3: 0.75rem;
  --space-4: 1rem;    --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem;    --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;   --space-20: 5rem;   --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.25rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem; --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  /* Transitions */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── DARK THEME (default) ──────────────────────── */
:root, [data-theme="dark"] {
  --color-bg:              #0d1117;
  --color-surface:         #161b22;
  --color-surface-2:       #1c2128;
  --color-surface-offset:  #21262d;
  --color-border:          #30363d;
  --color-divider:         #21262d;

  --color-text:            #e6edf3;
  --color-text-muted:      #8b949e;
  --color-text-faint:      #7d8590;
  --color-text-inverse:    #0d1117;

  --color-primary:         #58a6ff;
  --color-primary-hover:   #79b8ff;
  --color-primary-active:  #388bfd;
  --color-primary-dim:     rgba(88, 166, 255, 0.15);
  --color-primary-glow:    rgba(88, 166, 255, 0.25);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

/* ─── LIGHT THEME ──────────────────────────────── */
[data-theme="light"] {
  --color-bg:              #f6f8fa;
  --color-surface:         #ffffff;
  --color-surface-2:       #f0f3f6;
  --color-surface-offset:  #e8ecf0;
  --color-border:          #d0d7de;
  --color-divider:         #e8ecf0;

  --color-text:            #1f2328;
  --color-text-muted:      #57606a;
  --color-text-faint:      #656d76;
  --color-text-inverse:    #f6f8fa;

  --color-primary:         #0969da;
  --color-primary-hover:   #0860ca;
  --color-primary-active:  #0550ae;
  --color-primary-dim:     rgba(9, 105, 218, 0.1);
  --color-primary-glow:    rgba(9, 105, 218, 0.2);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #f6f8fa; --color-surface: #ffffff;
    --color-surface-2: #f0f3f6; --color-surface-offset: #e8ecf0;
    --color-border: #d0d7de; --color-divider: #e8ecf0;
    --color-text: #1f2328; --color-text-muted: #57606a;
    --color-text-faint: #656d76; --color-text-inverse: #f6f8fa;
    --color-primary: #0969da; --color-primary-hover: #0860ca;
    --color-primary-active: #0550ae;
    --color-primary-dim: rgba(9,105,218,0.1);
    --color-primary-glow: rgba(9,105,218,0.2);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
  }
}

/* ─── BASE RESET ─────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
  max-width: 100%;
  overflow-x: hidden;
  overflow-x: clip;
  overscroll-behavior-x: none;
  overscroll-behavior-y: none;
}

body {
  min-height: 100dvh;
  max-width: 100%;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.25s, color 0.25s;
  overflow-x: hidden;
  overflow-x: clip;
  overscroll-behavior-x: none;
  overscroll-behavior-y: none;
}

body.mobile-nav-open {
  width: 100%;
  overflow: hidden;
}

html.mobile-nav-open .site-header {
  position: fixed;
  inset: 0 0 auto;
  width: 100%;
}

/*
 * Mobile Safari can rubber-band the root document even when the root declares
 * overscroll-behavior:none. Keep the root fixed and make the body the actual
 * touch scroller so its boundaries can be contained without moving the page.
 */
@media (hover: none) and (pointer: coarse), (max-width: 768px) {
  html {
    height: 100%;
    overflow: hidden;
  }
  body {
    height: 100%;
    min-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: none;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    scroll-padding-top: var(--space-16);
  }
  body.mobile-nav-open {
    position: static;
    height: 100%;
    overflow: hidden;
  }
}

img, picture, video, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1,h2,h3,h4,h5,h6 { text-wrap: balance; line-height: 1.15; }
p, li { text-wrap: pretty; max-width: none; }

::selection {
  background: var(--color-primary-dim);
  color: var(--color-text);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { cursor: pointer; background: none; border: none; }

/* ─── UTILITY ────────────────────────────────────── */
.container {
  width: min(var(--content-wide), 100% - var(--space-8));
  margin-inline: auto;
}
.mono-text { font-family: var(--font-mono); font-size: var(--text-xs); }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}

/* ─── HEADER ─────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition), background var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.01em;
}
.logo:hover { text-decoration: none; opacity: 0.85; }

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
  letter-spacing: 0.03em;
}
.nav-link:hover, .nav-link.active {
  color: var(--color-text);
  background: var(--color-surface-offset);
  text-decoration: none;
}
.nav-link.active { color: var(--color-primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}
.nav-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* ─── MOBILE NAV ─────────────────────────────────── */
.mobile-nav {
  display: none;
  flex-direction: column;
  position: fixed;
  inset: 64px 0 0 0;
  height: calc(100dvh - 64px);
  max-height: calc(100dvh - 64px);
  z-index: 99;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6);
  padding-bottom: calc(var(--space-6) + env(safe-area-inset-bottom));
  gap: var(--space-2);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  overflow-y: auto;
  overscroll-behavior: none;
  -webkit-overflow-scrolling: touch;
}
.mobile-nav.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

/* ─── CUSTOM MOBILE PULL-TO-REFRESH ───────────────── */
.pull-refresh {
  --pull-distance: 0px;
  position: fixed;
  top: calc(env(safe-area-inset-top) + var(--space-2));
  left: 50%;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 38px;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-muted);
  background: var(--color-surface);
  background: color-mix(in srgb, var(--color-surface) 94%, transparent);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform:
    translate(-50%, calc(-100% - var(--space-4) + var(--pull-distance)));
  transition:
    opacity 0.16s ease,
    transform 0.16s ease,
    color 0.16s ease,
    border-color 0.16s ease;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.pull-refresh.is-visible { opacity: 1; }
.pull-refresh.is-ready {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.pull-refresh-icon {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  transform-origin: center;
}
.pull-refresh-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 700;
  white-space: nowrap;
}
.pull-refresh.is-refreshing .pull-refresh-icon {
  animation: pull-refresh-spin 0.7s linear infinite;
}
@keyframes pull-refresh-spin {
  to { transform: rotate(360deg); }
}
@media (min-width: 769px) and (hover: hover) and (pointer: fine) {
  .pull-refresh { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .pull-refresh { transition: none; }
  .pull-refresh.is-refreshing .pull-refresh-icon { animation-duration: 1.2s; }
}

.mobile-nav-link {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
}
.mobile-nav-link:hover {
  color: var(--color-primary);
  background: var(--color-surface-offset);
  text-decoration: none;
}

/* ─── SECTIONS ───────────────────────────────────── */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}
.section-label {
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
  display: block;
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
  letter-spacing: -0.02em;
}
.section-cta {
  margin-top: var(--space-10);
  text-align: center;
}

/* ─── HERO ───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: clamp(520px, 80vh, 800px);
  display: flex;
  align-items: center;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  overflow: hidden;
}
.hero .container { position: relative; z-index: 2; }

/* ── Hero two-column layout with headshot ─────── */
.hero-layout {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-16);
}
.hero-text {
  min-width: 0;
}
.hero-headshot-wrap {
  flex-shrink: 0;
}
.hero-headshot {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 2px solid var(--color-border);
  box-shadow: 0 0 0 6px var(--color-surface), 0 0 0 7px var(--color-border), var(--shadow-lg);
  display: block;
}

/* Contact card headshot */
.contact-headshot {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 2px solid var(--color-border);
  display: block;
}

@media (max-width: 768px) {
  .hero-layout {
    grid-template-columns: 1fr;
  }
  .hero-headshot-wrap {
    display: flex;
    justify-content: center;
    order: -1;
  }
  .hero-headshot {
    width: 160px;
    height: 160px;
  }
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.15;
  mask-image: radial-gradient(ellipse 90% 80% at 20% 50%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 20% 50%, black 0%, transparent 70%);
}

.hero-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}
.label-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3fb950;
  box-shadow: 0 0 8px #3fb950;
  animation: pulse-dot 2.5s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero-label .mono-text {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}
.hero-title .accent { color: var(--color-primary); }
.hero-title .hero-subtitle {
  display: block;
  margin-top: var(--space-4);
  margin-bottom: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  line-height: 1.5;
}

.hero-subtitle {
  color: var(--color-primary);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-description {
  max-width: 56ch;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.hero--company .hero-cta .btn {
  min-height: 44px;
  justify-content: center;
  white-space: nowrap;
}
.hero--company .hero-cta .btn-ghost {
  color: var(--color-text);
  background: var(--color-surface);
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  border-color: var(--color-text-muted);
  box-shadow: var(--shadow-sm);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.hero--company .hero-cta .btn-ghost:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-decoration: none;
  transition: color var(--transition);
}
.social-link:hover { color: var(--color-primary); text-decoration: none; }

/* ─── BUTTONS ────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  text-decoration: none;
  color: var(--color-bg);
  box-shadow: 0 0 16px var(--color-primary-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  background: var(--color-surface);
  text-decoration: none;
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-dim);
  text-decoration: none;
}
.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-sm);
}

/* ─── SKILLS GRID ────────────────────────────────── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}
.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition), box-shadow var(--transition),
              transform var(--transition);
}
.skill-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary-glow);
  transform: translateY(-2px);
}
.skill-icon {
  margin-bottom: var(--space-4);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  border-radius: var(--radius-md);
}
.skill-card-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
.skill-card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: none;
}

/* ─── EXPERIENCE TEASER ──────────────────────────── */
.experience-teaser { background: var(--color-surface); }

.exp-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.exp-item {
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
}
.exp-item:last-child { border-bottom: none; }
.exp-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.exp-period {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}
.exp-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #3fb950;
  background: rgba(63, 185, 80, 0.12);
  border: 1px solid rgba(63, 185, 80, 0.3);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}
.exp-role {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.exp-company {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  letter-spacing: 0.03em;
}
.exp-summary {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: none;
}

/* ─── EDUCATION TEASER ───────────────────────────── */
.edu-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-4);
}
.edu-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  gap: var(--space-5);
  transition: border-color var(--transition);
}
.edu-card:hover { border-color: var(--color-primary); }
.edu-badge {
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.04em;
  background: var(--color-primary-dim);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  height: fit-content;
  white-space: nowrap;
  flex-shrink: 0;
}
.edu-degree {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.team-profile-card {
  color: inherit;
  text-decoration: none;
  cursor: pointer;
}
.team-profile-card:hover,
.team-profile-card:focus-visible {
  text-decoration: none;
}
.team-profile-card:hover .edu-degree,
.team-profile-card:focus-visible .edu-degree {
  color: var(--color-primary);
}
.team-profile-card:focus-visible {
  border-color: var(--color-primary);
  outline: 3px solid var(--color-primary-dim);
  outline-offset: 3px;
}
.edu-school {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  letter-spacing: 0.03em;
}
.edu-topics {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.6;
  max-width: none;
}

/* ─── CTA STRIP ──────────────────────────────────── */
.cta-strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.cta-strip-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}
.cta-strip-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}
.cta-strip-desc {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 48ch;
}

/* ─── PAGE HERO (inner pages) ────────────────────── */
.page-hero {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.page-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.page-subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: none;
}

/* ─── TIMELINE ───────────────────────────────────── */
.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 20px;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}
.timeline-item {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-12);
  position: relative;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 8px var(--color-primary-glow);
  margin-top: 6px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.timeline-content {
  padding-top: 0;
}
.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
/* ── Company logo layout ────────────────────── */
.timeline-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  min-width: 0;
}

/* Generic logo wrapper (adds subtle rounded bg for logos with white backgrounds) */
.company-logo-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--color-border);
  height: 52px;
  min-width: 80px;
  max-width: 160px;
}

/* Logos that need a light bg pill in dark mode (UWaterloo gold/black, TTC) */
.company-logo-wrap--light-bg {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .company-logo-wrap--light-bg {
  background: #f4f4f4;
  border-color: var(--color-border);
}

.company-logo {
  height: 40px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  display: block;
}

.company-logo-wrap--wrsbc {
  width: 160px;
  max-width: 160px;
  overflow: hidden;
}

.company-logo-wrap--wrsbc a {
  display: block;
  width: 100%;
}

.company-logo-wrap--wrsbc .company-logo {
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* University source images include generous white margins; scale the artwork
   within a clipped pill so the visible marks match the company-logo weight. */
.company-logo-wrap:has(img[src$="logos/uwaterloo.png"]),
.company-logo-wrap:has(img[src$="logos/ontariotech.jpg"]) {
  width: 160px;
  overflow: hidden;
}

.company-logo-wrap:has(img[src$="logos/uwaterloo.png"]) a,
.company-logo-wrap:has(img[src$="logos/ontariotech.jpg"]) a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.company-logo-wrap img[src$="logos/uwaterloo.png"],
.company-logo-wrap img[src$="logos/ontariotech.jpg"] {
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: 40px;
  transform: none;
}

/* Tianchen SVG monogram - standalone (no wrap div) */
.company-logo--dark {
  height: 48px;
  width: 120px;
  flex-shrink: 0;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

[data-theme="dark"] .company-logo--dark {
  --logo-bg: #e8f0fe;
  --logo-fg: #1a56db;
  --logo-fg-dim: #4a5568;
}
/* ── End company logos ───────────────────────── */

.timeline-role {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.timeline-company {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
}
.timeline-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  flex-shrink: 0;
}
.timeline-period {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.timeline-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #3fb950;
  background: rgba(63, 185, 80, 0.12);
  border: 1px solid rgba(63, 185, 80, 0.3);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
}
.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.timeline-bullets li {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
  padding-left: var(--space-5);
  position: relative;
  max-width: none;
}
.timeline-bullets li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-family: var(--font-mono);
}
.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

/* ─── EDUCATION BLOCKS ───────────────────────────── */
.edu-block {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-8);
  padding-block: var(--space-10);
}
.edu-year-badge {
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.04em;
  background: var(--color-primary-dim);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  height: fit-content;
  text-align: center;
  line-height: 1.5;
}
.edu-block-degree {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  margin-bottom: var(--space-1);
  letter-spacing: -0.02em;
}
.edu-block-school {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  letter-spacing: 0.03em;
}
.edu-block-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.edu-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  min-width: 0;
}
/* University logos */
.edu-logo {
  height: 48px;
  width: 48px;
  object-fit: contain;
}

.edu-header-left .company-logo-wrap:has(img[src$="logos/uwaterloo.png"]) .edu-logo,
.edu-header-left .company-logo-wrap:has(img[src$="logos/ontariotech.jpg"]) .edu-logo {
  width: 100%;
  height: auto;
  max-width: 130px;
}
.edu-block-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #3fb950;
  background: rgba(63, 185, 80, 0.12);
  border: 1px solid rgba(63, 185, 80, 0.3);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  white-space: nowrap;
  height: fit-content;
}
.edu-block-status--complete {
  color: #3fb950;
  background: rgba(63, 185, 80, 0.12);
  border-color: rgba(63, 185, 80, 0.3);
}
.edu-divider {
  height: 1px;
  background: var(--color-border);
}
.edu-block-section {
  margin-bottom: var(--space-6);
}
.edu-block-section-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.edu-block-text {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: none;
}

.course-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.course-chip {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid var(--color-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  opacity: 0.85;
}

/* ─── SKILLS MATRIX ──────────────────────────────── */
.skills-matrix-section { background: var(--color-surface); }
.skills-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}
.skills-category {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}
.skills-cat-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-3);
}
.skills-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.skills-list li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding-left: var(--space-3);
  position: relative;
  max-width: none;
}
.skills-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-border);
  font-family: var(--font-mono);
}

/* ─── CONTACT PAGE ───────────────────────────────── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-12);
  align-items: start;
}
.contact-info-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}
.contact-info-desc {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-8);
  max-width: 52ch;
}
.contact-channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.contact-channel {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition),
              transform var(--transition);
}
.contact-channel:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 16px var(--color-primary-glow);
  transform: translateX(4px);
  text-decoration: none;
}
.contact-channel-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  flex-shrink: 0;
}
.contact-channel-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}
.contact-channel-label {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.contact-channel-value {
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.contact-channel-arrow {
  color: var(--color-text-faint);
  flex-shrink: 0;
  transition: color var(--transition), transform var(--transition);
}
.contact-channel:hover .contact-channel-arrow {
  color: var(--color-primary);
  transform: translate(2px, -2px);
}

.contact-availability {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}
.avail-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3fb950;
  box-shadow: 0 0 8px #3fb950;
  animation: pulse-dot 2.5s ease-in-out infinite;
  flex-shrink: 0;
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
}
.contact-card-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-4);
}
.contact-card-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.contact-card-role {
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-6);
  display: block;
}
.contact-card-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-align: left;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-5);
}
.contact-card-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
}
.contact-card-item .label {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}
.status-open {
  color: #3fb950;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

/* ─── FOOTER ─────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
  background: var(--color-surface);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-copy {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  max-width: none;
}
.footer-nav {
  display: flex;
  gap: var(--space-4);
}
.footer-nav a {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
  letter-spacing: 0.03em;
}
.footer-nav a:hover { color: var(--color-primary); }
.footer-social {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
  letter-spacing: 0.03em;
}
.footer-social:hover { color: var(--color-primary); }

/* ─── RESPONSIVE ─────────────────────────────────── */
@media (max-width: 768px) {
  .site-nav { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav { display: flex; }

  .hero-title { letter-spacing: -0.02em; }
  .hero-cta { flex-direction: column; align-items: flex-start; }

  .edu-block {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    padding-block: var(--space-8);
  }
  .edu-block-body { min-width: 0; }
  .edu-year-badge { width: fit-content; }
  .edu-block-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
  }
  .edu-header-left {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
  .edu-block-school { margin-bottom: 0; }
  .edu-block-status {
    white-space: normal;
    line-height: 1.4;
  }
  .edu-block-section { margin-bottom: var(--space-5); }
  .course-grid { gap: var(--space-2); }
  .course-chip {
    max-width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .timeline::before { display: none; }
  .timeline-item { grid-template-columns: 1fr; }
  .timeline-marker { display: none; }
  .timeline-header { flex-direction: column; }
  .timeline-header-left { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
  .timeline-meta { align-items: flex-start; }
  .company-logo-wrap { max-width: 120px; }
  .company-logo-wrap:has(img[src$="logos/uwaterloo.png"]),
  .company-logo-wrap:has(img[src$="logos/ontariotech.jpg"]) {
    width: 160px;
    max-width: min(160px, 100%);
  }
  .company-logo-wrap--wrsbc { width: 160px; max-width: min(160px, 100%); }
  .company-logo--dark { width: 100px; height: 40px; }

  .contact-layout { grid-template-columns: 1fr; }
  .contact-card-aside { order: -1; }

  .cta-strip-inner { flex-direction: column; align-items: flex-start; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: var(--space-4); }
  .footer-nav { flex-wrap: wrap; gap: var(--space-3); }

  html.main-js-failed .nav-toggle { display: none; }
  html.main-js-failed .mobile-nav {
    position: static;
    inset: auto;
    height: auto;
    max-height: none;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    border-bottom: 1px solid var(--color-border);
  }
}

@media (max-width: 480px) {
  .skills-grid { grid-template-columns: 1fr; }
  .edu-cards { grid-template-columns: 1fr; }
  .skills-matrix { grid-template-columns: 1fr; }
}

@media (scripting: none) and (max-width: 768px) {
  .nav-toggle { display: none; }
  .mobile-nav {
    position: static;
    inset: auto;
    height: auto;
    max-height: none;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    border-bottom: 1px solid var(--color-border);
  }
}

@media (max-width: 768px) and (max-height: 500px) {
  .mobile-nav {
    padding: var(--space-3);
    padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom));
    gap: 0;
  }
  .mobile-nav-link {
    padding: var(--space-2) var(--space-3);
  }
  .mobile-nav-label {
    margin-top: var(--space-2);
    padding: var(--space-1) var(--space-3);
  }
}

/* ─── SCROLL ANIMATION ───────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  html.js-reveal .skill-card,
  html.js-reveal .exp-item,
  html.js-reveal .timeline-item,
  html.js-reveal .edu-card,
  html.js-reveal .edu-block,
  html.js-reveal .contact-channel {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.45s ease, transform 0.45s ease;
  }
  html.js-reveal .skill-card.is-visible,
  html.js-reveal .exp-item.is-visible,
  html.js-reveal .timeline-item.is-visible,
  html.js-reveal .edu-card.is-visible,
  html.js-reveal .edu-block.is-visible,
  html.js-reveal .contact-channel.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Company hero background photo - mobile, light mode only */
@media (max-width: 768px) {
  html[data-theme="light"] .hero--company {
    background:
      linear-gradient(180deg, rgba(248, 250, 252, 0.94) 0%, rgba(248, 250, 252, 0.82) 45%, rgba(248, 250, 252, 0.30) 100%),
      url("bg-mobile-light-toronto-film.webp") center bottom / cover no-repeat;
  }
  html[data-theme="light"] .hero--company .hero-grid-bg {
    display: none;
  }
}


/* Founder's Background nav dropdown */
.nav-group { position: relative; display: inline-flex; }
.nav-dropdown {
  position: absolute; top: 100%; left: 0; min-width: 180px;
  display: none; flex-direction: column; gap: 2px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 10px; padding: 6px; z-index: 60;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.14);
}
.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown { display: flex; }
.nav-dropdown .nav-link { display: block; }
.nav-caret { font-size: 0.65em; opacity: 0.7; }

/* Mobile drawer grouping */
.mobile-nav-label {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--color-text-muted); margin: 0.9rem 0 0.15rem;
}
.mobile-nav-sub { padding-left: 1.1rem; }

/* Service page media placeholders */
.media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 768px) { .media-grid { grid-template-columns: 1fr; } }
.media-placeholder {
  border: 2px dashed var(--color-border); border-radius: 12px;
  aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); background: var(--color-surface);
}
.media-video { position: relative; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; }
.media-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.media-video-wrap { min-width: 0; }
.bilibili-mobile-card {
  display: none;
  text-decoration: none;
}
@media (max-width: 768px) {
  .bilibili-desktop-player { display: none; }
  .bilibili-mobile-card {
    display: block;
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface);
    color: #fff;
  }
  .bilibili-mobile-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .bilibili-mobile-card::after {
    content: "";
    position: absolute;
    inset: 45% 0 0;
    background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.78));
    pointer-events: none;
  }
  .bilibili-mobile-card-label {
    position: absolute;
    z-index: 1;
    left: 12px;
    right: 12px;
    bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-weight: 700;
    line-height: 1.3;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
  }
  .bilibili-play-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 32px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.72);
    font-size: 0.82rem;
    padding-left: 2px;
  }
}


/* Language switcher */
.lang-switch { display: flex; align-items: center; gap: 8px; font-size: 0.78rem; margin-right: 4px; }
.lang-switch a { color: var(--color-text-muted); text-decoration: none; }
.lang-switch a:hover { color: var(--color-primary); }
.lang-switch a.active { color: var(--color-primary); font-weight: 700; }
html[data-lang-options="fr"] .lang-switch a[data-lang="zh"],
html[data-lang-options="zh"] .lang-switch a[data-lang="fr"] { display: none; }


/* Merge media (photo+video) into the title block on service pages */
.page-hero--media { border-bottom: none; padding-bottom: var(--space-4); }
.media-section {
  background: var(--color-surface);
  padding-top: 0;
  padding-bottom: clamp(var(--space-10), 5vw, var(--space-16));
  border-bottom: 1px solid var(--color-border);
}
.media-section .media-grid { gap: 12px; }


/* Data-privacy caption under the AI-page videos */
.media-caption {
  max-width: none;
  margin: var(--space-6) 0 0;
  text-align: left;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.65;
}


/* Lab logo chip on model cards */
.model-logo {
  width: 46px; height: 46px; border-radius: 10px;
  background: #ffffff; border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-4); overflow: hidden;
}
.model-logo img { width: 32px; height: 32px; object-fit: contain; }

/* Company hero desktop backgrounds: sunset (light) / night skyline (dark) */
@media (min-width: 769px) {
  html[data-theme="light"] .hero--company {
    background:
      linear-gradient(90deg, rgba(246,248,250,0.95) 0%, rgba(246,248,250,0.72) 42%, rgba(246,248,250,0.25) 100%),
      url("bg-desktop-light-toronto.webp") center / cover no-repeat;
  }
  html[data-theme="dark"] .hero--company {
    background:
      linear-gradient(90deg, rgba(13,17,23,0.94) 0%, rgba(13,17,23,0.72) 42%, rgba(13,17,23,0.35) 100%),
      url("bg-desktop-dark.webp?v=2") center / cover no-repeat;
  }
  html[data-theme="light"] .hero--company .hero-grid-bg,
  html[data-theme="dark"] .hero--company .hero-grid-bg { display: none; }
}


/* Tap-to-open dropdown (touch) + larger mobile language tap targets */
.nav-group.open .nav-dropdown { display: flex; }
@media (max-width: 768px) {
  .lang-switch { gap: 2px; margin-right: 2px; }
  .lang-switch a { padding: 8px 7px; font-size: 0.92rem; border-radius: 8px; }
}

/* Company hero - mobile dark mode: Milky Way starfield */
@media (max-width: 768px) {
  html[data-theme="dark"] .hero--company {
    background:
      linear-gradient(180deg, rgba(13,17,23,0.90) 0%, rgba(13,17,23,0.70) 45%, rgba(13,17,23,0.38) 100%),
      url("bg-mobile-dark.webp?v=2") center / cover no-repeat;
  }
  html[data-theme="dark"] .hero--company .hero-grid-bg { display: none; }
}