/* =====================================================================
   RomanT Apps — Design System & Site Styles
   Table of contents:
   0. Tokens (:root + [data-theme="dark"])
   1. Reset & base
   2. Layout helpers / utilities
   3. Typography
   4. Buttons
   5. Header / nav
   6. Hero
   7. Trust stats bar
   8. Apps showcase (cards, filters)
   9. Features
   10. Languages marquee
   11. In-app look (device mockups)
   12. About developer
   13. Final CTA
   14. Footer
   15. Scroll-reveal / motion utilities
   16. Legal / prose pages
   17. 404 page
   18. Responsive breakpoints
   19. Reduced motion / print
   ===================================================================== */

/* ---------------------------------------------------------------------
   0. DESIGN TOKENS
   --------------------------------------------------------------------- */
:root {
  /* Brand / indigo ramp */
  --indigo-10: #0C0646;
  --indigo-20: #1A0F6E;
  --indigo-30: #2D1FA3;
  --indigo-40: #4338CA;
  --indigo-80: #BBB5FF;
  --indigo-90: #E0DEFF;
  --brand-primary: #4338CA;
  --brand-deep: #2D1FA3;
  --brand-ink: #1A0F6E;

  /* Accent amber */
  --amber-40: #8A5100;
  --amber-80: #FFB868;
  --amber-90: #FFDDB8;
  --amber-strong: #FF9E2C;

  /* Warm neutrals */
  --cream: #FDF8F2;
  --sand: #F2E9DA;
  --lavender-bg: #F4EFF9;
  --ink: #211B14;
  --ink-soft: #54473A;
  --outline: #867563;

  /* Dark theme neutrals (default values; overridden again under [data-theme=dark]) */
  --dark-bg: #14100C;
  --dark-surface: #1E1810;
  --dark-elev: #241E17;
  --dark-text: #EDE2D4;
  --dark-text-soft: #C9BBA9;

  /* Category gradients */
  --grad-business-a: #2D2A66;
  --grad-business-b: #4A4391;
  --grad-psychology-a: #4A3F6B;
  --grad-psychology-b: #8B6BAE;
  --grad-relationships-a: #6B3245;
  --grad-relationships-b: #B5617A;
  --grad-health-a: #1E5940;
  --grad-health-b: #52A77A;

  /* Radii */
  --r-lg: 24px;
  --r-pill: 999px;
  --r-md: 16px;
  --r-sm: 10px;

  /* Shadows */
  --shadow-sm: 0 4px 16px -8px rgba(67, 56, 202, 0.22);
  --shadow-md: 0 10px 40px -12px rgba(67, 56, 202, 0.28);
  --shadow-lg: 0 24px 64px -20px rgba(67, 56, 202, 0.34);
  --shadow-card-hover: 0 30px 70px -20px rgba(45, 31, 163, 0.4);

  /* Fonts */
  --font-display: "Sora", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Motion */
  --ease-out-expo: cubic-bezier(.22, 1, .36, 1);
  --dur-fast: 300ms;
  --dur-med: 500ms;
  --dur-slow: 700ms;

  /* Semantic surface tokens (light theme = default) */
  --bg: var(--cream);
  --bg-alt: var(--lavender-bg);
  --surface: #FFFFFF;
  --surface-2: var(--sand);
  --text: var(--ink);
  --text-soft: var(--ink-soft);
  --border-color: rgba(134, 117, 99, 0.22);
  --header-bg: rgba(253, 248, 242, 0.78);
  --focus-ring: #2D1FA3;

  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: var(--dark-bg);
  --bg-alt: #191310;
  --surface: var(--dark-surface);
  --surface-2: var(--dark-elev);
  --text: var(--dark-text);
  --text-soft: var(--dark-text-soft);
  --border-color: rgba(237, 226, 212, 0.14);
  --header-bg: rgba(20, 16, 12, 0.72);
  --shadow-sm: 0 4px 18px -8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 10px 40px -12px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 64px -20px rgba(0, 0, 0, 0.6);
  --shadow-card-hover: 0 30px 70px -20px rgba(0, 0, 0, 0.7);
  --focus-ring: var(--indigo-80);
}

/* ---------------------------------------------------------------------
   1. RESET & BASE
   --------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color var(--dur-med) var(--ease-out-expo), color var(--dur-med) var(--ease-out-expo);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
svg { display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; }

::selection { background: var(--indigo-80); color: var(--indigo-10); }

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------------------------------------------
   2. LAYOUT HELPERS
   --------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 24px;
}

.section { padding-block: clamp(64px, 9vw, 128px); position: relative; }
.section-alt { background: var(--bg-alt); }
.section-head {
  max-width: 720px;
  margin-bottom: clamp(32px, 5vw, 56px);
}
.section-head.center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-primary);
  background: var(--indigo-90);
  padding: 6px 14px;
  border-radius: var(--r-pill);
  margin-bottom: 16px;
}
html[data-theme="dark"] .eyebrow {
  color: var(--indigo-80);
  background: rgba(187, 181, 255, 0.14);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  background: var(--brand-primary);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--r-sm);
  z-index: 200;
  transition: top var(--dur-fast) var(--ease-out-expo);
}
.skip-link:focus { top: 16px; }

/* ---------------------------------------------------------------------
   3. TYPOGRAPHY
   --------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 3vw + 1rem, 3rem); }
h3 { font-size: clamp(1.25rem, 1vw + 1rem, 1.625rem); }
h4 { font-size: 1.125rem; }

p { margin: 0 0 1em; color: var(--text-soft); }
p:last-child { margin-bottom: 0; }

.lede {
  font-size: clamp(1.0625rem, 0.5vw + 1rem, 1.25rem);
  color: var(--text-soft);
  max-width: 60ch;
}

.text-gradient {
  background: linear-gradient(100deg, var(--brand-primary) 10%, var(--brand-deep) 45%, var(--amber-strong) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------------------------------------------------------------------
   4. BUTTONS
   --------------------------------------------------------------------- */
.btn {
  --btn-fg: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 14px 26px;
  border-radius: var(--r-pill);
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast) var(--ease-out-expo),
              background-color var(--dur-fast) var(--ease-out-expo);
  will-change: transform;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: linear-gradient(135deg, var(--indigo-40), var(--brand-deep));
  color: var(--btn-fg);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { transform: translateY(-2px) scale(1.02); box-shadow: var(--shadow-lg); }
.btn-primary:active { transform: translateY(0) scale(0.99); }

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border-color);
}
.btn-secondary:hover {
  background: var(--surface-2);
  transform: translateY(-2px);
  border-color: var(--brand-primary);
}

.btn-amber {
  background: linear-gradient(135deg, var(--amber-strong), var(--amber-40));
  color: #2A1600;
  box-shadow: 0 10px 32px -10px rgba(255, 158, 44, 0.55);
}
.btn-amber:hover { transform: translateY(-2px) scale(1.02); }

.btn-sm { padding: 10px 18px; font-size: 0.8125rem; }
.btn-block { width: 100%; }

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: var(--text);
  transition: background-color var(--dur-fast) var(--ease-out-expo), transform var(--dur-fast) var(--ease-out-expo);
}
.btn-icon:hover { background: var(--surface-2); transform: translateY(-1px); }
.btn-icon svg { width: 22px; height: 22px; }

/* ---------------------------------------------------------------------
   5. HEADER / NAV
   --------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  padding-block: 20px;
  transition: padding var(--dur-fast) var(--ease-out-expo),
              background-color var(--dur-fast) var(--ease-out-expo),
              box-shadow var(--dur-fast) var(--ease-out-expo),
              backdrop-filter var(--dur-fast) var(--ease-out-expo);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--header-bg);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  z-index: -1;
  transition: backdrop-filter var(--dur-fast) var(--ease-out-expo);
}
.site-header.is-scrolled {
  padding-block: 12px;
  box-shadow: var(--shadow-sm);
}
.site-header.is-scrolled::before {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
}
.brand .logo-mark { width: 36px; height: 36px; flex-shrink: 0; }
.brand span { white-space: nowrap; }
.brand:hover .logo-mark { transform: rotate(-6deg) scale(1.05); }
.logo-mark { transition: transform var(--dur-fast) var(--ease-out-expo); }

.nav-links {
  display: none;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  padding: 10px 16px;
  border-radius: var(--r-pill);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text-soft);
  transition: background-color var(--dur-fast) var(--ease-out-expo), color var(--dur-fast) var(--ease-out-expo);
}
.nav-links a:hover { background: var(--surface-2); color: var(--text); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.theme-toggle {
  position: relative;
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--dur-fast) var(--ease-out-expo), transform var(--dur-fast) var(--ease-out-expo);
}
html:not([data-theme="dark"]) .theme-toggle .icon-moon { opacity: 0; transform: rotate(-90deg) scale(0.5); }
html:not([data-theme="dark"]) .theme-toggle .icon-sun { opacity: 1; transform: rotate(0) scale(1); }
html[data-theme="dark"] .theme-toggle .icon-sun { opacity: 0; transform: rotate(90deg) scale(0.5); }
html[data-theme="dark"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0) scale(1); }

.nav-toggle {
  display: inline-flex;
}
.nav-toggle-box { width: 22px; height: 16px; position: relative; }
.nav-toggle-box span {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-out-expo), opacity var(--dur-fast) var(--ease-out-expo), top var(--dur-fast) var(--ease-out-expo);
}
.nav-toggle-box span:nth-child(1) { top: 0; }
.nav-toggle-box span:nth-child(2) { top: 7px; }
.nav-toggle-box span:nth-child(3) { top: 14px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) { top: 7px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) { top: 7px; transform: rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 4px 4px;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  padding: 14px 16px;
  border-radius: var(--r-md);
  font-weight: 500;
  color: var(--text);
}
.mobile-menu a:hover { background: var(--surface-2); }

@media (min-width: 900px) {
  .nav-links { display: flex; }
  .nav-toggle { display: none; }
  .mobile-menu { display: none !important; }
}

/* ---------------------------------------------------------------------
   6. HERO
   --------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(48px, 8vw, 96px) clamp(64px, 10vw, 120px);
  overflow: clip;
}

.hero-bg {
  position: absolute;
  inset: -10% -10% -10% -10%;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  will-change: transform;
  animation: blob-float 18s var(--ease-out-expo) infinite alternate;
}
.hero-blob.b1 {
  width: 480px; height: 480px;
  top: -140px; left: -120px;
  background: radial-gradient(circle at 30% 30%, var(--indigo-80), var(--brand-primary) 70%);
  animation-duration: 22s;
}
.hero-blob.b2 {
  width: 420px; height: 420px;
  top: 60px; right: -160px;
  background: radial-gradient(circle at 40% 40%, var(--amber-90), var(--amber-strong) 75%);
  animation-duration: 26s;
  animation-delay: -6s;
}
.hero-blob.b3 {
  width: 380px; height: 380px;
  bottom: -180px; left: 30%;
  background: radial-gradient(circle at 50% 50%, var(--brand-deep), var(--indigo-10) 80%);
  opacity: 0.35;
  animation-duration: 30s;
  animation-delay: -12s;
}
html[data-theme="dark"] .hero-blob { opacity: 0.28; }

@keyframes blob-float {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(40px, 30px) scale(1.08); }
  100% { transform: translate(-30px, -20px) scale(0.96); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}

.hero-copy { text-align: left; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border-color);
  color: var(--text-soft);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber-strong);
  box-shadow: 0 0 0 4px rgba(255, 158, 44, 0.25);
}

.hero h1 { margin-bottom: 0.4em; }
.hero h1 .word {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.5em);
  animation: word-reveal var(--dur-slow) var(--ease-out-expo) forwards;
}
@keyframes word-reveal {
  to { opacity: 1; transform: translateY(0); }
}

.hero-sub {
  font-size: clamp(1.0625rem, 0.4vw + 1rem, 1.25rem);
  color: var(--text-soft);
  max-width: 52ch;
  margin-bottom: 32px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-proof {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--text-soft);
}
.hero-proof strong { color: var(--text); }
.stars { color: var(--amber-strong); letter-spacing: 2px; }

.hero-visual {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
}

/* Phone mockups */
.phone {
  position: relative;
  width: 220px;
  aspect-ratio: 1080 / 2400;
  border-radius: 38px;
  background: #0c0c0f;
  padding: 10px;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.4);
  will-change: transform;
}
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  position: relative;
  background: var(--surface);
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; }
.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 84px;
  height: 22px;
  background: #0c0c0f;
  border-radius: 0 0 16px 16px;
  z-index: 2;
}

.hero-visual .phone {
  position: absolute;
  transition: transform var(--dur-med) var(--ease-out-expo);
}
.phone-primary {
  width: 260px;
  z-index: 3;
  transform: translateY(0) rotate(-2deg);
}
.phone-secondary {
  width: 200px;
  z-index: 2;
  left: -30px;
  top: 60px;
  transform: rotate(-10deg);
  opacity: 0.92;
}
.phone-tertiary {
  width: 190px;
  z-index: 1;
  right: -20px;
  top: 90px;
  transform: rotate(9deg);
  opacity: 0.85;
}

@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 40px; }
  .hero-copy { text-align: left; }
}

/* ---------------------------------------------------------------------
   7. TRUST STATS BAR
   --------------------------------------------------------------------- */
.stats-bar {
  padding-block: 48px;
  border-block: 1px solid var(--border-color);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 3vw, 2.75rem);
  color: var(--brand-primary);
  display: block;
  line-height: 1;
  margin-bottom: 8px;
}
html[data-theme="dark"] .stat-num { color: var(--indigo-80); }
.stat-label {
  font-size: 0.875rem;
  color: var(--text-soft);
  font-weight: 500;
}
.stats-proof {
  text-align: center;
  margin-top: 36px;
  font-size: 0.9375rem;
  color: var(--text-soft);
}
.stats-proof strong { color: var(--text); }

@media (min-width: 720px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ---------------------------------------------------------------------
   8. APPS SHOWCASE
   --------------------------------------------------------------------- */
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.filter-chip {
  padding: 10px 20px;
  border-radius: var(--r-pill);
  border: 1.5px solid var(--border-color);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-soft);
  background: var(--surface);
  transition: all var(--dur-fast) var(--ease-out-expo);
}
.filter-chip:hover { border-color: var(--brand-primary); color: var(--text); }
.filter-chip[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--indigo-40), var(--brand-deep));
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.apps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 640px) {
  .apps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .apps-grid { grid-template-columns: repeat(3, 1fr); }
}

.app-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur-med) var(--ease-out-expo), transform var(--dur-med) var(--ease-out-expo);
  transform-style: preserve-3d;
  will-change: transform;
  display: flex;
  flex-direction: column;
}
.app-card:hover { box-shadow: var(--shadow-card-hover); }
.app-card.is-hidden { display: none; }

.app-card-header {
  position: relative;
  padding: 28px 24px 20px;
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}
.app-card[data-category="Business"] .app-card-header {
  background: linear-gradient(160deg, var(--grad-business-a), var(--grad-business-b));
}
.app-card[data-category="Psychology"] .app-card-header {
  background: linear-gradient(160deg, var(--grad-psychology-a), var(--grad-psychology-b));
}
.app-card[data-category="Health"] .app-card-header {
  background: linear-gradient(160deg, var(--grad-health-a), var(--grad-health-b));
}

.app-card-header::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 80% 0%, rgba(255,255,255,0.25), transparent 60%);
}

/* Shine sweep */
.app-card-header .shine {
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,0.35), transparent);
  transform: skewX(-18deg);
  transition: left 0.9s var(--ease-out-expo);
  pointer-events: none;
}
.app-card:hover .app-card-header .shine { left: 130%; }

.app-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.75rem;
  line-height: 1;
  display: block;
  margin-bottom: 12px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.2);
}
.app-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  background: rgba(255,255,255,0.18);
  padding: 5px 12px;
  border-radius: var(--r-pill);
  backdrop-filter: blur(4px);
}

.app-card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex: 1;
}
.app-card-body h3 { margin: 0; }
.app-tagline {
  font-size: 0.9375rem;
  color: var(--text-soft);
  margin: 0;
  flex-grow: 0;
}
.topic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.topic-chip {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-soft);
  background: var(--surface-2);
  padding: 5px 11px;
  border-radius: var(--r-pill);
}
.app-card-footer {
  margin-top: auto;
  padding-top: 6px;
  display: flex;
}
.app-card .btn { width: 100%; }

/* ---------------------------------------------------------------------
   9. FEATURES
   --------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 640px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: transform var(--dur-fast) var(--ease-out-expo), box-shadow var(--dur-fast) var(--ease-out-expo), border-color var(--dur-fast) var(--ease-out-expo);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--indigo-90), var(--sand));
  color: var(--brand-primary);
  margin-bottom: 18px;
}
html[data-theme="dark"] .feature-icon {
  background: linear-gradient(135deg, rgba(187,181,255,0.16), rgba(255,184,104,0.1));
  color: var(--indigo-80);
}
.feature-icon svg { width: 26px; height: 26px; }
.feature-card h3 { font-size: 1.125rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.9375rem; margin: 0; }

/* ---------------------------------------------------------------------
   10. LANGUAGES MARQUEE
   --------------------------------------------------------------------- */
.lang-marquee-wrap {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  padding-block: 8px;
}
.lang-marquee {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.lang-marquee-wrap:hover .lang-marquee { animation-play-state: paused; }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.lang-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border-color);
  padding: 12px 22px;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 0.9375rem;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}
.lang-pill .flag { font-size: 1.125rem; }

/* ---------------------------------------------------------------------
   11. IN-APP LOOK (device mockups)
   --------------------------------------------------------------------- */
.inapp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
@media (min-width: 900px) {
  .inapp-grid { grid-template-columns: 1.1fr 0.9fr; }
}

.inapp-phones {
  position: relative;
  display: flex;
  justify-content: center;
  gap: 24px;
  min-height: 460px;
}
.inapp-phones .phone { width: 190px; }
.inapp-phones .phone:nth-child(2) { transform: translateY(28px); }

.inapp-features {
  display: grid;
  gap: 20px;
}
.inapp-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.inapp-feature .dot-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--indigo-90);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
html[data-theme="dark"] .inapp-feature .dot-icon {
  background: rgba(187,181,255,0.16);
  color: var(--indigo-80);
}
.inapp-feature .dot-icon svg { width: 20px; height: 20px; }
.inapp-feature h4 { margin-bottom: 4px; }
.inapp-feature p { font-size: 0.9375rem; margin: 0; }

/* ---------------------------------------------------------------------
   12. ABOUT DEVELOPER
   --------------------------------------------------------------------- */
.about-dev {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--r-lg);
  padding: clamp(28px, 5vw, 56px);
  box-shadow: var(--shadow-sm);
}
@media (min-width: 800px) {
  .about-dev { grid-template-columns: auto 1fr; }
}
.dev-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--indigo-40), var(--amber-strong));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.25rem;
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}
.dev-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--brand-primary);
  margin-top: 12px;
}
html[data-theme="dark"] .dev-link { color: var(--indigo-80); }
.dev-link svg { width: 16px; height: 16px; }
.dev-link:hover { text-decoration: underline; }

/* ---------------------------------------------------------------------
   13. FINAL CTA
   --------------------------------------------------------------------- */
.final-cta {
  position: relative;
  border-radius: var(--r-lg);
  margin-inline: 24px;
  padding: clamp(48px, 8vw, 88px) clamp(24px, 6vw, 64px);
  text-align: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--brand-deep), var(--indigo-40) 55%, var(--indigo-10));
  background-size: 200% 200%;
  animation: gradient-shift 12s ease infinite;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
@media (min-width: 1240px) {
  .final-cta { margin-inline: auto; max-width: 1192px; }
}
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(255,184,104,0.25), transparent 55%),
              radial-gradient(circle at 85% 80%, rgba(187,181,255,0.3), transparent 50%);
  pointer-events: none;
}
.final-cta h2 { color: #fff; margin-bottom: 0.35em; }
.final-cta p { color: rgba(255,255,255,0.82); max-width: 52ch; margin-inline: auto 24px auto; margin-bottom: 32px; }
.final-cta .btn-amber { position: relative; z-index: 1; }

/* ---------------------------------------------------------------------
   14. FOOTER
   --------------------------------------------------------------------- */
.site-footer {
  padding-block: 64px 32px;
  border-top: 1px solid var(--border-color);
  margin-top: clamp(48px, 8vw, 96px);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}
.footer-brand .brand { margin-bottom: 12px; }
.footer-brand p { max-width: 32ch; font-size: 0.9375rem; }
.footer-col h4 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  margin-bottom: 16px;
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a {
  font-size: 0.9375rem;
  color: var(--text);
  transition: color var(--dur-fast) var(--ease-out-expo);
}
.footer-col a:hover { color: var(--brand-primary); }
html[data-theme="dark"] .footer-col a:hover { color: var(--indigo-80); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
  font-size: 0.8125rem;
  color: var(--text-soft);
}
.footer-social {
  display: flex;
  gap: 10px;
}

/* ---------------------------------------------------------------------
   15. SCROLL-REVEAL / MOTION UTILITIES
   --------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-out-expo), transform var(--dur-slow) var(--ease-out-expo);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.stagger > * { transition-delay: calc(var(--stagger-i, 0) * 70ms); }

.count-up { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------------
   16. LEGAL / PROSE PAGES
   --------------------------------------------------------------------- */
.prose-page { padding-block: clamp(48px, 8vw, 88px); }
.prose {
  max-width: 74ch;
  margin-inline: auto;
}
.prose h1 { margin-bottom: 0.3em; }
.prose .updated {
  color: var(--text-soft);
  font-size: 0.9375rem;
  margin-bottom: 2.5em;
}
.prose h2 {
  font-size: 1.5rem;
  margin-top: 2em;
  margin-bottom: 0.6em;
}
.prose h3 { font-size: 1.125rem; margin-top: 1.5em; }
.prose p, .prose li { color: var(--text-soft); font-size: 1rem; }
.prose ul, .prose ol { margin: 0 0 1em; padding-left: 1.4em; list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-bottom: 0.5em; }
.prose a { color: var(--brand-primary); text-decoration: underline; text-underline-offset: 2px; }
html[data-theme="dark"] .prose a { color: var(--indigo-80); }
.prose blockquote {
  border-left: 3px solid var(--brand-primary);
  padding-left: 20px;
  margin: 1.5em 0;
  color: var(--text-soft);
  font-style: italic;
}
.prose hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 2.5em 0;
}
.breadcrumbs {
  font-size: 0.875rem;
  color: var(--text-soft);
  margin-bottom: 24px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.breadcrumbs a:hover { color: var(--brand-primary); }
.toc {
  background: var(--surface-2);
  border-radius: var(--r-md);
  padding: 20px 24px;
  margin-bottom: 2.5em;
}
.toc h2 { font-size: 1rem; margin-top: 0; margin-bottom: 0.75em; }
.toc ol { padding-left: 1.2em; margin-bottom: 0; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding-block: 20px;
}
.faq-item:first-child { padding-top: 0; }
.faq-item h3 { margin-bottom: 8px; font-size: 1.0625rem; }
.faq-item p { margin: 0; }

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--r-lg);
  padding: 28px;
  margin-bottom: 2.5em;
  box-shadow: var(--shadow-sm);
}
.contact-card h2 { margin-top: 0; }

/* ---------------------------------------------------------------------
   17. 404 PAGE
   --------------------------------------------------------------------- */
.notfound {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-block: 80px;
}
.notfound .big-404 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(5rem, 18vw, 10rem);
  line-height: 1;
  background: linear-gradient(135deg, var(--brand-primary), var(--amber-strong));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.1em;
}
.notfound p { max-width: 44ch; margin-bottom: 32px; }

/* ---------------------------------------------------------------------
   18. RESPONSIVE TWEAKS
   --------------------------------------------------------------------- */
/* Collapse header CTA to an icon on phones so the brand + menu never crowd. */
@media (max-width: 640px) {
  .nav-actions .btn-primary span { display: none; }
  .nav-actions .btn-primary { padding: 10px; border-radius: var(--r-pill); }
  .nav-actions .btn-primary svg { margin: 0; }
  .nav-inner { gap: 10px; }
}

@media (max-width: 480px) {
  .wrap { padding-inline: 18px; }
  .hero-ctas .btn { width: 100%; }
  .hero-ctas { flex-direction: column; }
}

/* ---------------------------------------------------------------------
   19. REDUCED MOTION / PRINT
   --------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .hero-blob { animation: none !important; }
  .lang-marquee { animation: none !important; }
  .reveal { opacity: 1; transform: none; }
  .hero h1 .word { opacity: 1; transform: none; animation: none; }
  .app-card, .phone { transform: none !important; }
}

@media print {
  .site-header, .site-footer, .final-cta, .nav-toggle, .theme-toggle { display: none; }
}