/* ═══════════════════════════════════════════════
   CARGO-CORE — PREMIUM DESIGN SYSTEM v2.0
   Apple × Tesla × Linear aesthetic
═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Palette */
  --bg:            #020509;
  --bg-mid:        #060c14;
  --surface:       rgba(10, 18, 32, 0.6);
  --surface-hi:    rgba(14, 26, 46, 0.75);
  --glass:         rgba(255, 255, 255, 0.04);
  --glass-hi:      rgba(255, 255, 255, 0.08);

  /* Text */
  --text:          #f0f6ff;
  --text-muted:    #7a93b8;
  --text-dim:      #465670;

  /* Accents */
  --cyan:          #00d4ff;
  --cyan-glow:     rgba(0, 212, 255, 0.22);
  --emerald:       #00f5a4;
  --emerald-glow:  rgba(0, 245, 164, 0.18);
  --violet:        #8b5cf6;
  --violet-glow:   rgba(139, 92, 246, 0.22);
  --gold:          #f5c842;
  --gold-glow:     rgba(245, 200, 66, 0.18);

  /* Borders */
  --border:        rgba(255, 255, 255, 0.07);
  --border-hi:     rgba(255, 255, 255, 0.15);
  --border-glow:   rgba(0, 212, 255, 0.4);

  /* Shadows */
  --shadow-sm:     0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-md:     0 12px 40px rgba(0, 0, 0, 0.55);
  --shadow-lg:     0 32px 80px rgba(0, 0, 0, 0.7);
  --shadow-glow:   0 0 60px rgba(0, 212, 255, 0.2), 0 32px 80px rgba(0, 0, 0, 0.7);

  /* Motion */
  --ease-out:      cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out:   cubic-bezier(0.65, 0, 0.35, 1);

  /* Layout */
  --max-w:         1280px;
  --nav-h:         68px;
  --radius-sm:     10px;
  --radius-md:     18px;
  --radius-lg:     26px;
}

/* ─── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
}

::selection { background: rgba(0,212,255,0.25); color: #fff; }

/* ─── Canvas Background ──────────────────────── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -10;
  pointer-events: none;
}

/* ─── Noise Overlay ──────────────────────────── */
.noise {
  position: fixed;
  inset: 0;
  z-index: -8;
  pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* ─── Ambient Orbs ───────────────────────────── */
.orb {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: -5;
  filter: blur(80px);
  will-change: transform;
}
.orb-1 {
  width: 700px; height: 700px;
  top: -20%; left: -15%;
  background: radial-gradient(circle, rgba(0,212,255,0.12) 0%, transparent 70%);
  animation: drift1 22s ease-in-out infinite;
}
.orb-2 {
  width: 600px; height: 600px;
  top: 10%; right: -10%;
  background: radial-gradient(circle, rgba(139,92,246,0.14) 0%, transparent 70%);
  animation: drift2 18s ease-in-out infinite;
}
.orb-3 {
  width: 500px; height: 500px;
  bottom: -10%; left: 30%;
  background: radial-gradient(circle, rgba(0,245,164,0.1) 0%, transparent 70%);
  animation: drift3 26s ease-in-out infinite;
}
.orb-4 {
  width: 400px; height: 400px;
  bottom: 20%; right: 20%;
  background: radial-gradient(circle, rgba(245,200,66,0.09) 0%, transparent 70%);
  animation: drift1 20s ease-in-out infinite reverse;
}

@keyframes drift1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(40px, -50px) scale(1.06); }
  66%       { transform: translate(-30px, 20px) scale(0.96); }
}
@keyframes drift2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(-50px, 30px) scale(1.08); }
  66%       { transform: translate(20px, -40px) scale(0.94); }
}
@keyframes drift3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%       { transform: translate(60px, -30px) scale(1.1); }
}

/* ─── Scroll Progress Bar ────────────────────── */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--emerald), var(--violet));
  z-index: 200;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px var(--cyan);
}

/* ─── Navigation ─────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5vw;
  background: rgba(2, 5, 9, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
}
.topbar.scrolled {
  background: rgba(2, 5, 9, 0.88);
  border-color: var(--border-hi);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--text);
}
.brand img {
  width: 38px; height: 38px;
  border-radius: 10px;
  object-fit: contain;
  background: #fff;
  padding: 4px;
  box-shadow: 0 0 20px rgba(0,212,255,0.3);
  transition: box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-spring);
}
.brand:hover img {
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 0 30px rgba(0,212,255,0.5);
}
.brand-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  background: linear-gradient(120deg, #fff 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.topbar nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  position: relative;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  transition: color 0.25s, background 0.25s;
  letter-spacing: 0.01em;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 3px; left: 50%;
  width: 0; height: 1.5px;
  background: linear-gradient(90deg, var(--cyan), var(--emerald));
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width 0.3s var(--ease-out);
}
.nav-link:hover { color: var(--text); }
.nav-link:hover::after { width: 60%; }
.nav-cta {
  margin-left: 10px;
  background: linear-gradient(120deg, rgba(0,212,255,0.15), rgba(0,245,164,0.1));
  border: 1px solid rgba(0,212,255,0.3);
  color: var(--cyan) !important;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s, transform 0.2s var(--ease-spring) !important;
}
.nav-cta:hover {
  background: linear-gradient(120deg, rgba(0,212,255,0.25), rgba(0,245,164,0.18)) !important;
  border-color: rgba(0,212,255,0.6) !important;
  box-shadow: 0 0 20px rgba(0,212,255,0.25) !important;
  transform: translateY(-1px) !important;
}
.nav-cta::after { display: none !important; }

/* ─── Hamburger button (mobile only) ─────────── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px; height: 38px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.hamburger:hover {
  background: var(--glass-hi);
  border-color: var(--border-hi);
}
.ham-line {
  display: block;
  width: 18px; height: 1.5px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-spring), opacity 0.2s, background 0.2s;
  transform-origin: center;
}
.hamburger[aria-expanded="true"] .ham-line:nth-child(1) { transform: translateY(6.5px) rotate(45deg);  background: var(--cyan); }
.hamburger[aria-expanded="true"] .ham-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger[aria-expanded="true"] .ham-line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); background: var(--cyan); }

/* ─── Mobile nav drawer ───────────────────────── */
.mobile-nav {
  display: none;
  flex-direction: column;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(4, 9, 18, 0.97);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: 16px 5vw 24px;
  gap: 4px;
  z-index: 999;
  transform: translateY(-8px);
  opacity: 0;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
  pointer-events: none;
}
.mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}
.mobile-nav-link {
  display: block;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.mobile-nav-link:hover {
  color: var(--text);
  background: var(--glass-hi);
}
.mobile-nav-cta {
  margin-top: 8px;
  color: var(--cyan) !important;
  border: 1px solid rgba(0,212,255,0.3);
  background: linear-gradient(120deg, rgba(0,212,255,0.1), rgba(0,245,164,0.07));
  font-weight: 600;
}

/* ─── Video Tab Switcher ──────────────────────── */
.video-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.video-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 9px 20px;
  cursor: pointer;
  transition: color 0.2s, background 0.2s, border-color 0.2s,
              box-shadow 0.25s, transform 0.2s var(--ease-spring);
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.video-tab:hover:not(.active) {
  color: var(--text);
  background: var(--glass-hi);
  border-color: var(--border-hi);
  transform: translateY(-1px);
}
.video-tab.active {
  color: var(--cyan);
  background: rgba(0,212,255,0.1);
  border-color: rgba(0,212,255,0.45);
  box-shadow: 0 0 18px rgba(0,212,255,0.18), inset 0 0 12px rgba(0,212,255,0.06);
}

/* iframe fade transition */
#demoFrame {
  transition: opacity 0.25s var(--ease-out);
}
#demoFrame.fading { opacity: 0; }

/* ─── Main Container ─────────────────────────── */
main {
  padding-top: var(--nav-h);
  width: 100%;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 5vw;
}

/* ─── Hero Section ───────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 5vw 100px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  animation: gridShift 20s linear infinite;
}
@keyframes gridShift {
  from { background-position: 0 0; }
  to   { background-position: 60px 60px; }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
  width: fit-content;
}
.eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  animation: pulse-dot 2s ease-in-out infinite;
  box-shadow: 0 0 8px var(--cyan);
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}

.hero-title {
  font-family: 'Inter', sans-serif;
  font-weight: 900;
  font-size: clamp(3rem, 7vw, 6.5rem);
  line-height: 1.0;
  letter-spacing: -0.04em;
  max-width: 900px;
}
.hero-title-line {
  display: block;
  overflow: hidden;
}
.hero-title-text {
  display: block;
  background: linear-gradient(135deg, #ffffff 0%, #c7deff 40%, #7aefcf 80%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleReveal 1s var(--ease-out) both;
}
.hero-title-line:nth-child(2) .hero-title-text { animation-delay: 0.1s; }
.hero-title-line:nth-child(3) .hero-title-text { animation-delay: 0.2s; }

@keyframes titleReveal {
  from { transform: translateY(110%); }
  to   { transform: translateY(0); }
}

.hero-sub {
  margin-top: 28px;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.75;
  font-weight: 400;
  animation: fadeUp 0.9s 0.5s var(--ease-out) both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 42px;
  animation: fadeUp 0.9s 0.7s var(--ease-out) both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Buttons ────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 14px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s var(--ease-spring), box-shadow 0.3s var(--ease-out), border-color 0.3s;
  white-space: nowrap;
}
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background 0.3s;
}
.btn:hover::before { background: rgba(255,255,255,0.06); }
.btn:hover         { transform: translateY(-3px) scale(1.02); }
.btn:active        { transform: translateY(-1px) scale(0.99); }

.btn-primary {
  background: linear-gradient(115deg, #00d4ff, #00f5a4);
  color: #02090f;
  font-weight: 700;
  box-shadow: 0 0 30px rgba(0,212,255,0.35), 0 8px 30px rgba(0,0,0,0.4);
  border-color: transparent;
}
.btn-primary:hover {
  box-shadow: 0 0 50px rgba(0,212,255,0.55), 0 12px 40px rgba(0,0,0,0.5);
}

.btn-ghost {
  color: var(--text);
  background: var(--glass);
  border-color: var(--border-hi);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: var(--glass-hi);
  border-color: rgba(0,212,255,0.4);
  box-shadow: 0 0 20px rgba(0,212,255,0.15), 0 8px 24px rgba(0,0,0,0.4);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  transition: transform 0.25s var(--ease-spring);
}
.btn:hover .btn-icon { transform: translateX(3px); }

/* ─── Hero Stats ─────────────────────────────── */
.hero-stats {
  display: flex;
  gap: 0;
  margin-top: 70px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--glass);
  backdrop-filter: blur(16px);
  width: fit-content;
  overflow: hidden;
  animation: fadeUp 0.9s 0.85s var(--ease-out) both;
}
.stat-item {
  padding: 22px 36px;
  text-align: center;
  position: relative;
}
.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 1px;
  background: var(--border);
}
.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 2.2rem;
  line-height: 1;
  background: linear-gradient(120deg, #fff, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}
.stat-label {
  display: block;
  margin-top: 5px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ─── Scroll Indicator ───────────────────────── */
.scroll-hint {
  position: absolute;
  bottom: 9px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-dim);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  animation: fadeUp 1s 1.2s var(--ease-out) both;
}
.scroll-hint span {
  margin: 0;
  padding: 0;
  line-height: 1;
}
.scroll-mouse {
  width: 22px; height: 34px;
  border: 2px solid var(--border-hi);
  border-radius: 999px;
  position: relative;
  display: flex;
  justify-content: center;
  padding-top: 5px;
  flex-shrink: 0;
}
.scroll-mouse::before {
  content: '';
  width: 3px; height: 8px;
  background: var(--cyan);
  border-radius: 999px;
  animation: scrollBob 2s ease-in-out infinite;
}
@keyframes scrollBob {
  0%, 100% { transform: translateY(0); opacity: 1; }
  80%       { transform: translateY(10px); opacity: 0; }
}

/* ─── Section Styles ─────────────────────────── */
.section {
  padding: 120px 5vw;
  position: relative;
}

.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}
.section-label-line {
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.section-title {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
  color: var(--text);
}

.section-desc {
  margin-top: 16px;
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  line-height: 1.75;
}

.section-head {
  margin-bottom: 56px;
}

/* ─── Divider ────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-hi) 30%, var(--border-hi) 70%, transparent);
  margin: 0 5vw;
}

/* ─── Media Cards ────────────────────────────── */
.media-wrap {
  position: relative;
}
.media-glow {
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-lg) + 2px);
  background: linear-gradient(135deg, rgba(0,212,255,0.5), rgba(139,92,246,0.5), rgba(0,245,164,0.4));
  opacity: 0;
  transition: opacity 0.5s var(--ease-out);
  filter: blur(1px);
  z-index: -1;
}
.media-wrap:hover .media-glow { opacity: 1; }

.media-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface-hi);
  box-shadow: var(--shadow-lg);
  position: relative;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.media-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}
.media-card iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  display: block;
}

/* Chrome bar */
.media-chrome {
  background: rgba(8, 16, 28, 0.95);
  padding: 13px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border);
}
.chrome-dots {
  display: flex;
  gap: 7px;
}
.chrome-dot {
  width: 11px; height: 11px;
  border-radius: 50%;
}
.chrome-dot.red    { background: #ff5f57; }
.chrome-dot.yellow { background: #febc2e; }
.chrome-dot.green  { background: #28c840; }
.chrome-address {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
  font-family: monospace;
}

/* ─── Dev Grid ───────────────────────────────── */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.dev-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  overflow: hidden;
  cursor: default;
  transition: border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
  will-change: transform;
}

/* card spotlight laser */
.dev-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(600px circle at var(--x, 50%) var(--y, 50%), rgba(0,212,255,0.08) 0%, transparent 50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
}
.dev-card:hover::before { opacity: 1; }
.dev-card:hover {
  border-color: rgba(0,212,255,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,212,255,0.1) inset;
}

/* gradient glow corner */
.dev-card-glow {
  position: absolute;
  width: 200px; height: 200px;
  border-radius: 50%;
  filter: blur(50px);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
  bottom: -60px; right: -60px;
}
.dev-card:hover .dev-card-glow { opacity: 0.5; }

.dev-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--surface-hi), rgba(0,212,255,0.2));
  border: 2px solid var(--border-hi);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--cyan);
  margin-bottom: 18px;
  position: relative;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.dev-card:hover .dev-avatar {
  border-color: var(--cyan);
  box-shadow: 0 0 20px var(--cyan-glow);
}

.dev-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 5px;
  letter-spacing: -0.01em;
}

.dev-role {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 18px;
}

.dev-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 22px;
}
.dev-tags li {
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 11px;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.dev-card:hover .dev-tags li {
  border-color: rgba(0,212,255,0.2);
  color: var(--text);
}

.dev-links {
  display: flex;
  gap: 9px;
}
.dev-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 13px;
  transition: color 0.25s, background 0.25s, border-color 0.25s, transform 0.2s var(--ease-spring);
}
.dev-link-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.dev-link-btn:hover {
  color: var(--cyan);
  background: rgba(0,212,255,0.06);
  border-color: rgba(0,212,255,0.3);
  transform: translateY(-2px);
}

/* ─── Link Cards ─────────────────────────────── */
.link-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.link-card {
  position: relative;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  overflow: hidden;
  transition: border-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), transform 0.3s var(--ease-out);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.link-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(400px circle at var(--x, 50%) var(--y, 50%), rgba(0,212,255,0.07) 0%, transparent 50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
}
.link-card:hover::before { opacity: 1; }
.link-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,255,0.35);
  box-shadow: 0 24px 60px rgba(0,0,0,0.55), 0 0 0 1px rgba(0,212,255,0.1) inset;
}

.link-card-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--glass);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: background 0.3s, border-color 0.3s, transform 0.3s var(--ease-spring), box-shadow 0.3s;
}
.link-card:hover .link-card-icon {
  background: rgba(0,212,255,0.1);
  border-color: rgba(0,212,255,0.4);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
  transform: scale(1.1) rotate(-5deg);
}

.link-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.08rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.link-card-desc {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.link-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cyan);
  margin-top: 4px;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.3s, transform 0.3s var(--ease-out);
}
.link-card:hover .link-card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ─── Footer ─────────────────────────────────── */
.footer {
  padding: 48px 5vw;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.footer-brand img {
  width: 30px; height: 30px;
  border-radius: 7px;
  background: #fff;
  padding: 3px;
  opacity: 0.8;
}
.footer-brand-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-copy {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-align: center;
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.25s;
}
.footer-links a:hover { color: var(--cyan); }

/* ─── Reveal Animations ──────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px) scale(0.98);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal-left.visible { opacity: 1; transform: none; }
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal-right.visible { opacity: 1; transform: none; }

/* ─── Cursor Follower ────────────────────────── */
#cursor-dot {
  position: fixed;
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.08s, width 0.2s, height 0.2s, background 0.2s, opacity 0.3s;
  box-shadow: 0 0 10px var(--cyan-glow);
  opacity: 0;
}
#cursor-ring {
  position: fixed;
  width: 36px; height: 36px;
  border: 1.5px solid rgba(0,212,255,0.45);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease-out), width 0.3s, height 0.3s, border-color 0.3s, opacity 0.3s;
  opacity: 0;
}

/* ─── Responsive ─────────────────────────────── */
@media (max-width: 900px) {
  .link-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { flex-direction: column; width: 100%; }
  .stat-item + .stat-item::before { top: 0; bottom: auto; left: 20%; right: 20%; width: auto; height: 1px; }
}

@media (max-width: 680px) {
  .dev-grid   { grid-template-columns: 1fr; }
  .link-grid  { grid-template-columns: 1fr; }
  .hero-title { font-size: clamp(2.5rem, 10vw, 4rem); }
  .hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); }
  .stat-item  { padding: 16px 10px; }
  .stat-num   { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .topbar     { padding: 0 4vw; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr; }
  .section { padding: 80px 5vw; }
}

/* ─── Utility ────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ─── PDF Slide Viewer ───────────────────────── */
/* Keep the card's border-radius and clip all children to it */
.slide-viewer-card {
  overflow: hidden !important;
  border-radius: var(--radius-lg) !important;
}

/* ── Fullscreen state ── */
.slide-viewer-card:fullscreen,
.slide-viewer-card:-webkit-full-screen {
  width: 100vw !important;
  height: 100vh !important;
  max-width: 100vw !important;
  border-radius: 0 !important;
  display: flex;
  flex-direction: column;
  background: #000;
}
.slide-viewer-card:fullscreen .slide-canvas-wrap,
.slide-viewer-card:-webkit-full-screen .slide-canvas-wrap {
  flex: 1;
  min-height: 0;
  background: #000;
}
.slide-viewer-card:fullscreen #slideCanvas,
.slide-viewer-card:-webkit-full-screen #slideCanvas {
  width: auto !important;
  height: 100% !important;
  max-height: 100% !important;
  max-width: 100% !important;
  margin: 0 auto;
}
.slide-viewer-card:fullscreen .slide-controls,
.slide-viewer-card:-webkit-full-screen .slide-controls {
  border-radius: 0;
  flex-shrink: 0;
}

/* Chrome bar page indicator */
.slide-page-indicator {
  margin-left: auto;
  font-family: 'Space Grotesk', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* Canvas wrapper */
.slide-canvas-wrap {
  position: relative;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80vh;
  min-height: 260px;
  overflow: auto;
  overscroll-behavior: contain;
  touch-action: pan-x pan-y;
}
#slideCanvas {
  display: block;
  width: auto;
  height: auto;
  max-width: none;
  max-height: none;
}

/* Loading state */
.slide-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: rgba(6, 12, 20, 0.92);
  color: var(--text-muted);
  font-size: 0.88rem;
  z-index: 5;
}
.slide-spinner {
  width: 36px; height: 36px;
  border: 2.5px solid var(--border);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Click zones (left / right half of canvas) */
.slide-zone {
  position: absolute;
  top: 0; bottom: 0;
  width: 40%;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 2.5rem;
  color: rgba(255,255,255,0.0);
  display: flex;
  align-items: center;
  z-index: 4;
  transition: color 0.2s, background 0.2s;
  padding: 0 20px;
}
.slide-zone-prev { left: 0;  justify-content: flex-start; }
.slide-zone-next { right: 0; justify-content: flex-end; }
.slide-zone:hover {
  color: rgba(255,255,255,0.6);
  background: linear-gradient(90deg, rgba(0,0,0,0.18), transparent);
}
.slide-zone-next:hover {
  background: linear-gradient(270deg, rgba(0,0,0,0.18), transparent);
}

/* Controls bar */
.slide-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(6, 12, 22, 0.92);
  border-top: 1px solid var(--border);
  /* bottom corners match the card radius */
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.slide-ctrl-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s, border-color 0.2s, transform 0.15s var(--ease-spring);
}
.slide-ctrl-btn:hover:not(:disabled) {
  color: var(--text);
  background: var(--glass-hi);
  border-color: var(--border-hi);
  transform: translateY(-1px);
}
.slide-ctrl-btn:disabled {
  opacity: 0.28;
  cursor: not-allowed;
}

/* Auto button active state */
.slide-auto-btn.is-active {
  color: var(--cyan);
  border-color: rgba(0,212,255,0.4);
  background: rgba(0,212,255,0.08);
  box-shadow: 0 0 14px rgba(0,212,255,0.15);
}

/* Fullscreen button — icon-only square */
.slide-fs-btn {
  padding: 7px 9px;
  flex-shrink: 0;
}
.slide-fs-btn.is-active {
  color: var(--cyan);
  border-color: rgba(0,212,255,0.4);
  background: rgba(0,212,255,0.08);
}

.slide-zoom-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.slide-zoom-btn {
  padding: 7px 10px;
}
.slide-zoom-level {
  min-width: 3.5ch;
  text-align: center;
  font-family: 'Space Grotesk', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* Progress track */
.slide-progress-track {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.slide-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--emerald));
  border-radius: 999px;
  transition: width 0.4s var(--ease-out);
  box-shadow: 0 0 8px rgba(0,212,255,0.5);
}

/* ─── PDF Annotation Link Overlay ───────────── */
.pdf-annot-layer {
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 0;     /* collapsed by default — JS sizes it per page  */
  pointer-events: none;    /* the container never intercepts mouse events   */
}
.pdf-annot-layer a {
  position: absolute;      /* positioned by JS inside the layer div         */
  display: block;
  pointer-events: all;     /* only the actual link areas are interactive     */
  background: transparent;
  border-radius: 2px;
  transition: background 0.15s;
}
.pdf-annot-layer a:hover {
  background: rgba(0, 212, 255, 0.12);
  outline: 1.5px solid rgba(0, 212, 255, 0.4);
}

/* ─── Responsive: hamburger on mobile ────────── */
@media (max-width: 768px) {
  #mainNav       { display: none; }
  .hamburger     { display: flex; }
  .mobile-nav    { display: flex; }
  .slide-controls {
    gap: 8px;
    padding: 10px 12px;
    flex-wrap: wrap;
  }
  .slide-zone {
    display: none;
  }
  .slide-zoom-group {
    display: none;
  }
}