/* ══════════════════════════════════════════════════════════════════════
   R Studio — rstudio.live
   Polished dark theme · Purple/violet accent · Mobile-first
   ══════════════════════════════════════════════════════════════════════ */

/* ── Design Tokens ──────────────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg:            #08080b;
  --bg-card:       #111115;
  --bg-elevated:   #19191f;
  --bg-surface:    #1e1e26;

  /* Borders */
  --border:        rgba(255,255,255,0.07);
  --border-hover:  rgba(255,255,255,0.14);
  --border-accent: rgba(124,58,237,0.35);

  /* Text */
  --text:          #f0eef4;
  --text-muted:    rgba(240,238,244,0.55);
  --text-faint:    rgba(240,238,244,0.30);

  /* Accent — violet spectrum */
  --accent:        #7c3aed;
  --accent-light:  #a78bfa;
  --accent-dark:   #5b21b6;
  --accent-glow:   rgba(124,58,237,0.22);
  --accent-glow-strong: rgba(124,58,237,0.40);

  /* Semantic colors */
  --green:         #34d399;
  --green-bg:      rgba(52,211,153,0.08);
  --green-border:  rgba(52,211,153,0.25);
  --yellow:        #fbbf24;
  --yellow-bg:     rgba(251,191,36,0.06);
  --yellow-border: rgba(251,191,36,0.20);
  --red:           #fb7185;
  --red-bg:        rgba(251,113,133,0.08);
  --red-border:    rgba(251,113,133,0.25);

  /* Radius */
  --radius:        16px;
  --radius-sm:     10px;
  --radius-xs:     6px;

  /* Layout */
  --max-w:         1140px;
  --nav-h:         64px;

  /* Shadows */
  --shadow-sm:     0 2px 8px rgba(0,0,0,0.25);
  --shadow-md:     0 8px 30px rgba(0,0,0,0.35);
  --shadow-lg:     0 16px 50px rgba(0,0,0,0.45);
  --shadow-accent: 0 4px 24px rgba(124,58,237,0.20);

  /* Transitions */
  --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:   cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Reset & Base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Global noise texture overlay for depth */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' 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)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px;
}

::selection {
  background: var(--accent);
  color: white;
}

a { color: inherit; }

img { max-width: 100%; height: auto; }

/* ── Nav ─────────────────────────────────────────────────────────────── */
.nav {
  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 24px;
  background: rgba(8,8,11,0.80);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background 0.35s ease, box-shadow 0.35s ease;
}

.nav.scrolled {
  background: rgba(8,8,11,0.96);
  box-shadow: 0 1px 30px rgba(0,0,0,0.4);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.3px;
  transition: opacity 0.2s;
}

.nav-brand:hover { opacity: 0.85; }

.nav-brand img {
  height: 36px;
  width: auto;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
  position: relative;
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

.nav-links a.active {
  color: var(--text);
  background: rgba(255,255,255,0.10);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  border-radius: 1px;
  background: var(--accent);
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s;
}

.nav-toggle:hover { background: rgba(255,255,255,0.06); }

/* ── Nav — Mobile ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(8,8,11,0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    padding: 8px;
    display: none;
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }

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

  .nav-links a {
    padding: 14px 16px;
    width: 100%;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .nav-links a.active::after { display: none; }

  /* Language toggle in mobile menu */
  .nav-links .lang-toggle {
    display: flex;
    width: calc(100% - 32px);
    height: 44px;
    margin: 8px 16px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    justify-content: center;
  }
}

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

/* Primary glow */
.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(
    circle,
    var(--accent-glow-strong) 0%,
    rgba(124,58,237,0.12) 35%,
    transparent 70%
  );
  pointer-events: none;
  animation: heroGlowPulse 8s ease-in-out infinite alternate;
}

/* Secondary glow — offset */
.hero::after {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(
    circle,
    rgba(167,139,250,0.10) 0%,
    transparent 60%
  );
  pointer-events: none;
  animation: heroGlowPulse 10s ease-in-out 2s infinite alternate;
}

@keyframes heroGlowPulse {
  0%   { opacity: 0.6; transform: translateX(-50%) scale(1); }
  100% { opacity: 1;   transform: translateX(-50%) scale(1.08); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  animation: heroFadeIn 1s var(--ease-out) forwards;
}

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

.hero-logo {
  height: 80px;
  margin-bottom: 28px;
  filter: drop-shadow(0 0 40px var(--accent-glow-strong));
  animation: heroLogoFloat 6s ease-in-out infinite;
}

/* Studio hero — larger logo for R Studio branding */
.hero-studio .hero-logo {
  height: 120px;
  margin-bottom: 32px;
  filter: drop-shadow(0 0 60px var(--accent-glow-strong));
}

@keyframes heroLogoFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.hero h1 {
  font-size: clamp(40px, 7vw, 68px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 50%, #c4b5fd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Studio hero — punchier, shorter tagline */
.hero-studio h1 {
  font-size: clamp(36px, 6vw, 56px);
  letter-spacing: -2px;
  line-height: 1.05;
  margin-bottom: 16px;
}

.hero-studio p {
  font-size: 19px;
  max-width: 480px;
}

/* Studio badge — "by R Studio" chip above product names */
.studio-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 100px;
  background: rgba(124,58,237,0.10);
  border: 1px solid rgba(124,58,237,0.18);
  color: var(--accent-light);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.studio-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow-strong);
}

.hero p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

.hero-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Page Hero (inner pages) ─────────────────────────────────────────── */
.page-hero {
  padding: 140px 24px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 700px;
  background: radial-gradient(
    circle,
    var(--accent-glow-strong) 0%,
    rgba(124,58,237,0.10) 40%,
    transparent 65%
  );
  pointer-events: none;
  animation: heroGlowPulse 8s ease-in-out infinite alternate;
}

.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
  animation: heroFadeIn 1s var(--ease-out) forwards;
}

.page-hero-content h1 {
  font-size: clamp(36px, 6vw, 52px);
  font-weight: 900;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
}

.page-hero-content p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s var(--ease-out);
  position: relative;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, transparent 100%);
  opacity: 0;
  transition: opacity 0.25s;
}

.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  filter: brightness(1.12);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(124,58,237,0.30);
}

.btn-primary:active {
  transform: translateY(0);
  filter: brightness(0.95);
}

.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--border-hover);
}

.btn-secondary:active {
  background: rgba(255,255,255,0.08);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ── Sections ────────────────────────────────────────────────────────── */
.section {
  padding: 100px 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ── Cards (generic) ─────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s var(--ease-out);
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.glass {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 28px;
}

/* ── Features Grid ───────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: all 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
}

/* Subtle top-edge gradient on hover */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.feature-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(124,58,237,0.08);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-glow) 0%, rgba(124,58,237,0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  border: 1px solid rgba(124,58,237,0.12);
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.2px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ── Products Grid ──────────────────────────────────────────────────── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease-out);
  display: flex;
  flex-direction: column;
}

/* Accent gradient edge on hover */
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-dark), var(--accent), var(--accent-light));
  opacity: 0;
  transition: opacity 0.35s;
}

/* Ambient glow on hover */
.product-card::after {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}

.product-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(124,58,237,0.10);
}

.product-card:hover::before {
  opacity: 1;
}

.product-card:hover::after {
  opacity: 1;
}

.product-card .product-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--accent-glow) 0%, rgba(124,58,237,0.06) 100%);
  border: 1px solid rgba(124,58,237,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}

.product-card .product-icon img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.product-card .product-icon svg {
  width: 36px;
  height: 36px;
}

.product-card h3 {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.4px;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.product-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
  flex: 1;
  position: relative;
  z-index: 1;
}

.product-card .product-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-light);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: gap 0.25s var(--ease-out), color 0.2s;
  position: relative;
  z-index: 1;
}

.product-card .product-cta:hover {
  color: var(--text);
  gap: 10px;
}

.product-card .product-cta::after {
  content: '\2192';
  transition: transform 0.25s var(--ease-out);
}

.product-card .product-cta:hover::after {
  transform: translateX(3px);
}

/* ── Section Divider ────────────────────────────────────────────────── */
.section-divider {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  border: none;
}

.section-divider::before {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--border) 20%,
    rgba(124,58,237,0.15) 50%,
    var(--border) 80%,
    transparent 100%
  );
}

/* ── Lbby Section ───────────────────────────────────────────────────── */
.lbby-section {
  position: relative;
  overflow: hidden;
}

/* Subtle violet ambient glow behind the Lbby section */
.lbby-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 800px;
  height: 100%;
  background: radial-gradient(
    ellipse at center top,
    rgba(124,58,237,0.06) 0%,
    transparent 60%
  );
  pointer-events: none;
}

/* ── Section Anchoring & Snap ───────────────────────────────────────── */
.hero,
.lbby-section {
  scroll-snap-align: start;
}

/* Anchor link smooth offset for fixed nav */
[id] {
  scroll-margin-top: calc(var(--nav-h) + 24px);
}

/* ── Download ────────────────────────────────────────────────────────── */
.download-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  transition: all 0.3s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.download-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-dark), var(--accent), var(--accent-light));
  opacity: 0;
  transition: opacity 0.3s;
}

.download-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.download-card:hover::after {
  opacity: 1;
}

.download-card .platform-icon {
  font-size: 44px;
  margin-bottom: 14px;
  display: block;
  filter: grayscale(0.15);
  transition: filter 0.3s;
}

.download-card:hover .platform-icon {
  filter: grayscale(0);
}

.download-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.2px;
}

.download-card .version {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.download-card .btn { width: 100%; justify-content: center; }

/* Download section — centered card */
#download {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  padding-top: 56px;
  padding-bottom: 56px;
  padding-left: 40px;
  padding-right: 40px;
}

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

/* ── Docs ────────────────────────────────────────────────────────────── */
.docs-content {
  max-width: 760px;
  margin: 0 auto;
}

.docs-content h3 {
  font-size: 22px;
  font-weight: 800;
  margin: 44px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  letter-spacing: -0.3px;
}

.docs-content h3:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.docs-content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 16px;
}

.docs-content strong {
  color: var(--text);
  font-weight: 700;
}

.docs-content ol,
.docs-content ul {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 20px;
  padding-left: 24px;
}

.docs-content li {
  margin-bottom: 8px;
}

.docs-content li::marker {
  color: var(--accent-light);
}

.docs-content code {
  background: rgba(124,58,237,0.10);
  border: 1px solid rgba(124,58,237,0.12);
  padding: 2px 7px;
  border-radius: 5px;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--accent-light);
}

.docs-content pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px;
  overflow-x: auto;
  margin-bottom: 20px;
}

.docs-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-muted);
}

/* ── Changelog ───────────────────────────────────────────────────────── */
.changelog-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  margin-bottom: 16px;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.changelog-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.changelog-item h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 4px;
  letter-spacing: -0.2px;
}

.changelog-item .date {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.changelog-item .body {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
  white-space: pre-wrap;
}

.changelog-item .body code {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Changelog links */
.changelog-item .body a {
  color: var(--accent-light);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}

.changelog-item .body a:hover {
  color: var(--accent);
}

/* ── Contact ─────────────────────────────────────────────────────────── */
.contact-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 30px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.25s var(--ease-out);
  min-width: 220px;
}

.contact-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact-card .icon {
  font-size: 26px;
  flex-shrink: 0;
}

.contact-card .label {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.2px;
}

.contact-card .sub {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.4;
}

/* ── Footer ──────────────────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-faint);
  font-size: 13px;
  border-top: 1px solid var(--border);
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ── Utilities ───────────────────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }

/* ── Animations ──────────────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.fade-in {
  animation: fadeInUp 0.6s var(--ease-out) forwards;
}

/* Stagger children for grid items */
.features-grid .feature-card:nth-child(1) { transition-delay: 0ms; }
.features-grid .feature-card:nth-child(2) { transition-delay: 50ms; }
.features-grid .feature-card:nth-child(3) { transition-delay: 100ms; }
.features-grid .feature-card:nth-child(4) { transition-delay: 150ms; }
.features-grid .feature-card:nth-child(5) { transition-delay: 200ms; }
.features-grid .feature-card:nth-child(6) { transition-delay: 250ms; }
.features-grid .feature-card:nth-child(7) { transition-delay: 300ms; }
.features-grid .feature-card:nth-child(8) { transition-delay: 350ms; }
.features-grid .feature-card:nth-child(9) { transition-delay: 400ms; }

.download-cards .download-card:nth-child(1) { transition-delay: 0ms; }
.download-cards .download-card:nth-child(2) { transition-delay: 80ms; }
.download-cards .download-card:nth-child(3) { transition-delay: 160ms; }

/* ── Scrollbar ───────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.10);
  border-radius: 4px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }

/* Firefox scrollbar + scroll snap */
html {
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.10) var(--bg);
  scroll-snap-type: y proximity;
}

/* ── Focus Styles ────────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Language Toggle ───────────────────────────────────────────────── */
.lang-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.5px;
}

.lang-toggle:hover {
  background: rgba(255,255,255,0.12);
  color: var(--text);
  border-color: var(--border-hover);
}

/* ── Responsive Tweaks ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .section {
    padding: 72px 20px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .hero {
    padding: 100px 20px 60px;
  }

  .page-hero {
    padding: 110px 20px 40px;
  }

  .hero h1 {
    letter-spacing: -1px;
  }

  .hero p {
    font-size: 16px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  #download {
    padding-left: 24px;
    padding-right: 24px;
    border-radius: 20px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .products-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .product-card {
    padding: 30px 24px;
  }

  .product-card .product-icon {
    width: 60px;
    height: 60px;
    border-radius: 14px;
  }

  .hero-studio h1 {
    letter-spacing: -1.2px;
  }

  .hero-studio .hero-logo {
    height: 96px;
  }

  .download-cards {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .contact-links {
    flex-direction: column;
    align-items: center;
  }

  .contact-card {
    width: 100%;
    max-width: 340px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .nav { padding: 0 16px; }

  .nav-brand span { display: none; }

  .hero-logo { height: 64px; }

  .hero-studio .hero-logo { height: 80px; }

  .hero-studio h1 {
    font-size: 32px;
    letter-spacing: -0.8px;
  }

  .studio-badge {
    font-size: 11px;
    padding: 4px 12px;
  }

  .product-card {
    padding: 24px 20px;
  }

  .product-card .product-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
  }

  .product-card h3 {
    font-size: 19px;
  }

  .feature-card { padding: 22px; }

  .download-card { padding: 24px 20px; }

  .docs-content h3 { font-size: 19px; }

  .changelog-item { padding: 20px; }

  #download {
    padding-left: 20px;
    padding-right: 20px;
    border-radius: 16px;
  }
}

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

  html { scroll-behavior: auto; }

  .hero::before, .hero::after { animation: none; }
  .hero-logo { animation: none; }
}