/* =====================================================
   Nikita Zubairov — Modern Landing Page Styles
   Inspired by high-impact landing pages (glass + gradients)
   ===================================================== */

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

:root {
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-display: "Space Grotesk", var(--font-body);

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 22px;

  --shadow-soft: 0 14px 50px rgba(0, 0, 0, 0.35);
  --shadow-card: 0 18px 60px rgba(0, 0, 0, 0.28);

  /* Dark (default) */
  --bg: #070a12;
  --bg2: #0b0f1a;
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.70);
  --faint: rgba(255, 255, 255, 0.55);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.18);
  --card: rgba(255, 255, 255, 0.06);
  --card-2: rgba(255, 255, 255, 0.08);

  --accent: #8b5cf6;
  --accent2: #22d3ee;
  --accent3: #fb7185;
  --good: #34d399;

  --focus: rgba(34, 211, 238, 0.45);
}

[data-theme="light"] {
  --bg: #f7f8fc;
  --bg2: #ffffff;
  --text: rgba(12, 15, 26, 0.92);
  --muted: rgba(12, 15, 26, 0.70);
  --faint: rgba(12, 15, 26, 0.55);
  --border: rgba(12, 15, 26, 0.12);
  --border-strong: rgba(12, 15, 26, 0.18);
  --card: rgba(255, 255, 255, 0.72);
  --card-2: rgba(255, 255, 255, 0.9);

  --shadow-soft: 0 14px 50px rgba(12, 15, 26, 0.10);
  --shadow-card: 0 18px 60px rgba(12, 15, 26, 0.12);
}

body {
  font-family: var(--font-body);
  line-height: 1.55;
  color: var(--text);
  background: radial-gradient(1200px 700px at 15% 10%, rgba(139, 92, 246, 0.24), transparent 60%),
              radial-gradient(1200px 700px at 85% 20%, rgba(34, 211, 238, 0.18), transparent 60%),
              radial-gradient(900px 600px at 70% 95%, rgba(251, 113, 133, 0.14), transparent 60%),
              linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Prevent accidental horizontal scroll from wide content */
main, section, header, footer { max-width: 100%; }
* { min-width: 0; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }

:focus-visible {
  outline: 2px solid transparent;
  box-shadow: 0 0 0 4px var(--focus);
  border-radius: 10px;
}

/* Utilities */
.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.muted { color: var(--muted); }

.text-gradient {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent2) 55%, var(--accent3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 14px;
  z-index: 9999;
  padding: 10px 14px;
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.skip-link:focus { left: 14px; }

/* Background overlays */
.bg { position: fixed; inset: 0; pointer-events: none; z-index: -1; }
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(600px 380px at 50% 20%, rgba(0, 0, 0, 0.9), transparent 75%);
  opacity: 0.35;
}

.bg-blob {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 999px;
  filter: blur(40px);
  opacity: 0.35;
  transform: translate3d(0, 0, 0);
  animation: blobFloat 14s ease-in-out infinite;
}

.blob-1 {
  left: -130px;
  top: -150px;
  background: radial-gradient(circle at 30% 30%, rgba(139, 92, 246, 0.95), rgba(139, 92, 246, 0.05));
}
.blob-2 {
  right: -170px;
  top: 80px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle at 40% 40%, rgba(34, 211, 238, 0.9), rgba(34, 211, 238, 0.05));
  animation-duration: 18s;
}
.blob-3 {
  left: 20%;
  bottom: -260px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle at 50% 50%, rgba(251, 113, 133, 0.85), rgba(251, 113, 133, 0.05));
  animation-duration: 20s;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 18px) scale(1.06); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bg-blob, .marquee-track, .scroll-dot, .floating-cards { animation: none !important; }
  .reveal { transition: none !important; }
}

/* Header / Nav */
.site-header { position: sticky; top: 0; z-index: 1000; }

.navbar {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(8, 10, 18, 0.55);
  backdrop-filter: blur(12px);
}

[data-theme="light"] .navbar {
  background: rgba(255, 255, 255, 0.62);
  border-bottom: 1px solid rgba(12, 15, 26, 0.08);
}

.nav-container {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  position: relative; /* anchors the mobile dropdown */
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.9), rgba(34, 211, 238, 0.7));
  color: rgba(255, 255, 255, 0.95);
  font-family: var(--font-display);
  font-weight: 700;
  box-shadow: 0 12px 36px rgba(139, 92, 246, 0.22);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-right { display: flex; align-items: center; gap: 14px; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
}

[data-theme="light"] .nav-menu { background: rgba(255, 255, 255, 0.65); }

.nav-link {
  font-size: 0.95rem;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  transition: background 180ms ease, color 180ms ease;
}

.nav-link:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }
[data-theme="light"] .nav-link:hover { background: rgba(12, 15, 26, 0.06); }

.nav-link.active {
  color: var(--text);
  background: rgba(139, 92, 246, 0.18);
  border: 1px solid rgba(139, 92, 246, 0.25);
}

.nav-actions { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

.icon-btn:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.07); }
[data-theme="light"] .icon-btn:hover { background: rgba(12, 15, 26, 0.06); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 46px;
  height: 42px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column; /* ensures 3 bars stack vertically */
  gap: 4px;
}

.nav-toggle .bar {
  width: 18px;
  height: 2px;
  background: var(--text);
  display: block;
  border-radius: 3px;
  opacity: 0.9;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 650;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
  user-select: none;
}

.btn-sm { padding: 10px 14px; border-radius: 12px; font-size: 0.95rem; }

.btn-primary {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.92), rgba(34, 211, 238, 0.85));
  color: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 55px rgba(139, 92, 246, 0.28);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 24px 70px rgba(34, 211, 238, 0.18); }

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.08); }
[data-theme="light"] .btn-secondary { background: rgba(255, 255, 255, 0.75); }
[data-theme="light"] .btn-secondary:hover { background: rgba(255, 255, 255, 0.9); }

/* Hero */
.hero {
  padding: 86px 0 56px;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: center;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  grid-template-rows: auto auto;
  grid-template-areas:
    "top visual"
    "rest visual";
  gap: 44px;
  align-items: center;
}

.hero-top { grid-area: top; }
.hero-rest { grid-area: rest; }
.hero-visual { grid-area: visual; }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 4.4vw, 4.1rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-top: 16px;
}

.hero-subtitle {
  margin-top: 16px;
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 62ch;
}

.hero-badges { display: flex; gap: 10px; flex-wrap: wrap; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 999px;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text);
}

.badge-muted { color: var(--muted); background: rgba(255, 255, 255, 0.03); }

.hero-cta { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }

.hero-metrics {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.metric {
  padding: 12px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.metric-number {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.3rem;
}

.metric-label { color: var(--faint); font-size: 0.88rem; margin-top: 2px; }

/* Marquee */
.logo-marquee { margin-top: 26px; }

.marquee {
  position: relative;
  overflow: hidden;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.marquee::before,
.marquee::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
}

.marquee::before { left: 0; background: linear-gradient(90deg, rgba(0,0,0,0.55), transparent); }
.marquee::after { right: 0; background: linear-gradient(270deg, rgba(0,0,0,0.55), transparent); }

[data-theme="light"] .marquee::before { background: linear-gradient(90deg, rgba(247,248,252,0.95), transparent); }
[data-theme="light"] .marquee::after { background: linear-gradient(270deg, rgba(247,248,252,0.95), transparent); }

.marquee-track {
  display: flex;
  width: max-content;
  white-space: nowrap;
  will-change: transform;
  animation: marquee 22s linear infinite;
}

.marquee-group {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 10px 16px;
}

.marquee-item {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  flex: 0 0 auto;
}

[data-theme="light"] .marquee-item { background: rgba(255,255,255,0.85); border-color: rgba(12,15,26,0.10); }

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Hero visual */
.hero-visual { position: relative; }

.portrait {
  position: relative;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  box-shadow: var(--shadow-card);
}

.portrait img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transform: scale(1.02);
  filter: saturate(1.02) contrast(1.02);
}

.portrait-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(500px 420px at 30% 20%, rgba(139, 92, 246, 0.35), transparent 60%),
              radial-gradient(420px 360px at 85% 30%, rgba(34, 211, 238, 0.22), transparent 55%),
              radial-gradient(450px 380px at 55% 90%, rgba(251, 113, 133, 0.14), transparent 60%);
  pointer-events: none;
  mix-blend-mode: screen;
}

.floating-cards {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  box-shadow: 0 22px 80px rgba(0, 0, 0, 0.25);
  animation: floaty 6s ease-in-out infinite;
}

.float-card:nth-child(1) { left: -18px; top: 16%; animation-delay: 0.2s; }
.float-card:nth-child(2) { right: -20px; top: 46%; animation-delay: 0.8s; }
.float-card:nth-child(3) { left: 6%; bottom: -10px; animation-delay: 1.2s; }

.float-icon {
  width: 38px;
  height: 38px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.55), rgba(34, 211, 238, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.float-title { font-weight: 700; letter-spacing: -0.02em; }
.float-sub { font-size: 0.9rem; color: var(--muted); }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-bottom { margin-top: 28px; }
.scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}
.scroll-text { font-size: 0.92rem; color: var(--muted); }
.scroll-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.9), rgba(34, 211, 238, 0.9));
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.18);
  animation: dot 1.2s ease-in-out infinite;
}
@keyframes dot { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(4px); } }

/* Sections */
.section { padding: 82px 0; }

.section-header {
  margin-bottom: 32px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 2.4vw, 2.3rem);
  letter-spacing: -0.03em;
}

.section-subtitle {
  color: var(--muted);
  margin-top: 8px;
  max-width: 70ch;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 18px;
  align-items: start;
}

.stack { display: grid; gap: 12px; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 14px;
}

.cards-grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.card[href],
a.card {
  display: block;
  color: inherit;
  text-decoration: none;
}

.card[href]:hover,
a.card:hover {
  text-decoration: none;
}

.card[href]:focus-visible,
a.card:focus-visible {
  outline: 2px solid rgba(34, 211, 238, 0.55);
  outline-offset: 4px;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--card-2);
}

.card-lg { padding: 22px; border-radius: var(--radius-lg); }

.card-kicker {
  color: var(--muted);
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.card-title {
  margin-top: 8px;
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  font-size: 1.35rem;
}

.prose p { margin-top: 14px; color: var(--muted); }
.prose strong { color: var(--text); }

.card-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  font-weight: 650;
}

.pill-muted {
  color: var(--muted);
  font-weight: 600;
}

/* Timeline */
.timeline {
  position: relative;
  display: grid;
  gap: 14px;
}

.timeline-item {
  position: relative;
  padding-left: 26px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.4), rgba(34, 211, 238, 0.4));
  border-radius: 999px;
  opacity: 0.6;
}

.timeline-dot {
  position: absolute;
  left: 0px;
  top: 22px;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.95), rgba(34, 211, 238, 0.85));
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.14);
}

.timeline-card { padding: 18px; }

.timeline-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.timeline-title { font-family: var(--font-display); letter-spacing: -0.02em; font-size: 1.25rem; }
.timeline-subtitle { color: var(--muted); margin-top: 4px; font-weight: 600; }
.timeline-date { color: var(--faint); font-weight: 650; font-size: 0.92rem; }

/* Experience cards */
.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.card-meta { margin-top: 4px; color: var(--muted); font-weight: 600; }

.card-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  background: rgba(34, 211, 238, 0.10);
  color: rgba(255, 255, 255, 0.92);
  font-weight: 700;
  white-space: nowrap;
}

[data-theme="light"] .card-badge { color: rgba(12, 15, 26, 0.92); }

.card-badge.badge-muted {
  border-color: rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.card-featured {
  position: relative;
  overflow: hidden;
  border-color: rgba(139, 92, 246, 0.28);
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.10), rgba(255, 255, 255, 0.05));
}

.card-featured::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 24px;
  background: linear-gradient(90deg, rgba(139, 92, 246, 0.55), rgba(34, 211, 238, 0.35), rgba(251, 113, 133, 0.35));
  filter: blur(18px);
  opacity: 0.35;
  pointer-events: none;
}

/* Chips */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }

.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 650;
  font-size: 0.92rem;
}

[data-theme="light"] .chip { background: rgba(255, 255, 255, 0.9); border-color: rgba(12, 15, 26, 0.10); }

/* Contact */
.contact-list { margin-top: 18px; display: grid; gap: 14px; }

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.contact-label { font-weight: 700; letter-spacing: -0.01em; }
.contact-link { color: var(--text); font-weight: 650; }
.contact-link:hover { text-decoration: underline; }

.link-card { cursor: pointer; }
.link-card-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.link-left { display: flex; align-items: center; gap: 12px; }
.link-icon {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.link-title { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; }

/* Footer */
.footer {
  padding: 44px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.02);
}

[data-theme="light"] .footer { border-top-color: rgba(12, 15, 26, 0.10); background: rgba(255, 255, 255, 0.65); }

.footer-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-brand { font-family: var(--font-display); font-weight: 800; letter-spacing: -0.03em; }
.footer-muted { color: var(--muted); margin-top: 6px; }

.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links a { color: var(--muted); padding: 8px 10px; border-radius: 12px; }
.footer-links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 620ms ease, transform 620ms ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 980px) {
  .hero-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    grid-template-areas:
      "top"
      "visual"
      "rest";
  }
  .floating-cards { display: none; }
  .grid-2 { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: 1fr; }
  .cards-grid-3 { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  /* Mobile header layout: brand | theme | menu */
  .nav-container {
    justify-content: flex-start;
  }

  .brand { order: 1; }

  /* nav-right holds the theme button (and the dropdown container) */
  .nav-right {
    order: 2;
    margin-left: auto;
  }

  /* menu button on the far right */
  .nav-toggle { 
    order: 3;
    display: inline-flex;
    padding: 0;
  }

  .nav-toggle .bar {
    margin: 0;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    border-radius: 18px;
    padding: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: rgba(8, 10, 18, 0.85);
    z-index: 1100;
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.45);
    max-height: calc(100vh - 92px);
    overflow: auto;
  }

  [data-theme="light"] .nav-menu { background: rgba(255, 255, 255, 0.92); }

  .nav-menu.open { display: flex; }

  .nav-link { width: 100%; padding: 12px 12px; }

  .nav-toggle { display: inline-flex; }
  .nav-actions .btn { display: none; }
}

@media (max-width: 480px) {
  .container { width: min(1180px, calc(100% - 28px)); }
  .hero { padding-top: 66px; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; }
  .marquee::before, .marquee::after { width: 70px; }
}

@media (max-width: 380px) {
  .hero-metrics { grid-template-columns: 1fr; }
  .hero-subtitle { font-size: 1rem; }
}