:root {
  --bg: #0b1120;
  --bg-elevated: #111a2e;
  --card: rgba(21, 31, 50, 0.72);
  --card-solid: #151f32;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);
  --ink: #f8fafc;
  --ink-muted: #94a3b8;
  --correct: #22c55e;
  --correct-glow: rgba(34, 197, 94, 0.28);
  --present: #f59e0b;
  --present-glow: rgba(245, 158, 11, 0.28);
  --absent: #334155;
  --accent: #38bdf8;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --font-display: 'Fredoka', system-ui, -apple-system, sans-serif;
  --font-body: 'Nunito', system-ui, -apple-system, sans-serif;
  --max-w: 1160px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(900px 500px at 12% -6%, rgba(34, 197, 94, 0.14), transparent 60%),
    radial-gradient(800px 500px at 88% 8%, rgba(245, 158, 11, 0.13), transparent 60%),
    radial-gradient(700px 600px at 50% 60%, rgba(56, 189, 248, 0.06), transparent 70%),
    var(--bg);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(100% - 32px, var(--max-w));
  margin-inline: auto;
}

/* Navbar */
.nav-wrap {
  position: sticky;
  top: 14px;
  z-index: 50;
  padding-top: 14px;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.45);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--ink-muted);
  font-weight: 600;
  font-size: 0.94rem;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}

.footer-author {
  color: #4ade80;
  font-weight: 700;
}

.footer-author:hover {
  text-decoration: underline;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: #052e16;
  font-weight: 800;
  font-size: 0.9rem;
  box-shadow: 0 8px 22px rgba(34, 197, 94, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(34, 197, 94, 0.4);
}

/* Hero */
.hero {
  padding: 56px 0 44px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 44px;
  align-items: center;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #86efac;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--correct);
  box-shadow: 0 0 10px var(--correct);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 5vw, 3.85rem);
  line-height: 1.08;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #4ade80 0%, #facc15 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--ink-muted);
  max-width: 540px;
  margin: 0 0 28px;
}

.store-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  padding: 13px 20px;
  border-radius: 16px;
  font-weight: 800;
  font-size: 0.96rem;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, #f8fafc, #e2e8f0);
  color: #0f172a;
  border-color: transparent;
  box-shadow: 0 12px 30px rgba(248, 250, 252, 0.14);
}

.btn-secondary {
  background: rgba(30, 41, 59, 0.72);
  color: var(--ink);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  border-color: rgba(248, 250, 252, 0.4);
}

.btn-small {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  opacity: 0.75;
  line-height: 1.1;
}

.btn-label {
  display: block;
  font-size: 0.98rem;
  line-height: 1.15;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 500px;
}

.metric-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
}

.metric-label {
  font-size: 0.78rem;
  color: var(--ink-muted);
}

/* Phone Mockup */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 18px 0;
}

.float-tile {
  position: absolute;
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: #fff;
  box-shadow: 0 18px 32px rgba(0, 0, 0, 0.45);
  z-index: 3;
  user-select: none;
}

.float-tile.t1 {
  top: 12px;
  left: 8%;
  background: linear-gradient(145deg, #22c55e, #15803d);
  transform: rotate(-10deg);
}

.float-tile.t2 {
  bottom: 34px;
  left: 2%;
  background: linear-gradient(145deg, #f59e0b, #d97706);
  border-radius: 50%;
  transform: rotate(8deg);
}

.float-tile.t3 {
  top: 44px;
  right: 4%;
  background: linear-gradient(145deg, #f59e0b, #b45309);
  border-radius: 50%;
  transform: rotate(12deg);
}

.float-tile.t4 {
  bottom: 18px;
  right: 9%;
  background: linear-gradient(145deg, #22c55e, #166534);
  transform: rotate(-7deg);
}

.phone-frame {
  width: min(100%, 336px);
  border-radius: 40px;
  padding: 14px;
  background: linear-gradient(160deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow:
    0 34px 80px rgba(2, 6, 23, 0.8),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  position: relative;
  z-index: 2;
}

.phone-screen {
  background: #0b1120;
  border-radius: 28px;
  padding: 18px 14px 16px;
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.phone-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 0.78rem;
  font-weight: 700;
}

.phone-title {
  color: var(--ink);
}

.phone-badges {
  display: flex;
  gap: 6px;
}

.phone-badge {
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.14);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fbbf24;
  font-size: 0.72rem;
}

.mini-board {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.mini-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.tile {
  aspect-ratio: 1;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  background: #182235;
  border: 1.5px solid #2b3a55;
  color: var(--ink);
  user-select: none;
}

.tile.correct {
  background: var(--correct);
  border-color: #4ade80;
  color: #052e16;
  box-shadow: 0 6px 18px var(--correct-glow);
}

.tile.present {
  background: var(--present);
  border-color: #fbbf24;
  border-radius: 50%;
  color: #451a03;
  box-shadow: 0 6px 18px var(--present-glow);
}

.tile.absent {
  background: var(--absent);
  border-color: #475569;
  color: #cbd5e1;
}

.tile.focus {
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.22);
}

.phone-keyboard-preview {
  display: grid;
  gap: 5px;
  padding: 8px;
  border-radius: 14px;
  background: #111827;
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.kb-row {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.kb-key {
  flex: 1;
  height: 26px;
  border-radius: 6px;
  background: #1f2937;
  color: #e2e8f0;
  font-size: 0.65rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.kb-key.is-green {
  background: #16a34a;
  color: #fff;
}

.kb-key.is-amber {
  background: #d97706;
  color: #fff;
}

.kb-key.is-enter {
  flex: 2;
  background: var(--correct);
  color: #052e16;
  font-weight: 800;
}

/* Section generic */
.section {
  padding: 64px 0;
}

.section-head {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 38px;
}

.section-kicker {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #4ade80;
  margin-bottom: 8px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.4vw, 2.55rem);
  line-height: 1.16;
  margin: 0 0 12px;
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 1.02rem;
}

/* Interactive Demo */
.demo-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  backdrop-filter: blur(12px);
}

.demo-board {
  max-width: 300px;
  margin-inline: auto;
  width: 100%;
}

.demo-controls h3 {
  font-family: var(--font-display);
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.demo-controls p {
  margin: 0 0 16px;
  color: var(--ink-muted);
}

.word-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.word-chip {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid var(--border-strong);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.18s ease;
}

.word-chip:hover,
.word-chip.active {
  background: rgba(34, 197, 94, 0.18);
  border-color: var(--correct);
  color: #86efac;
}

.demo-status {
  min-height: 24px;
  font-size: 0.92rem;
  font-weight: 700;
  color: #fbbf24;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.bento-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

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

.bento-card.span-2 {
  grid-column: span 2;
}

.bento-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 1.35rem;
  margin-bottom: 14px;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.28);
}

.bento-icon.amber {
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.28);
}

.bento-icon.sky {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.28);
}

.bento-card h3 {
  font-family: var(--font-display);
  margin: 0 0 8px;
  font-size: 1.22rem;
}

.bento-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* Rules 3-col */
.rules-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.rule-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.rule-tile {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.rule-card h4 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.rule-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

/* FAQ */
.faq-list {
  max-width: 780px;
  margin-inline: auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-q {
  width: 100%;
  background: transparent;
  border: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1rem;
  text-align: left;
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.faq-a {
  padding: 0 20px 18px;
  color: var(--ink-muted);
  font-size: 0.95rem;
  display: none;
}

.faq-item.open .faq-a {
  display: block;
}

.faq-plus {
  font-size: 1.25rem;
  color: var(--ink-muted);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-plus {
  transform: rotate(45deg);
  color: var(--correct);
}

/* CTA Banner */
.cta-banner {
  background:
    radial-gradient(600px 260px at 80% 20%, rgba(34, 197, 94, 0.18), transparent 65%),
    radial-gradient(500px 260px at 15% 80%, rgba(245, 158, 11, 0.15), transparent 65%),
    var(--card-solid);
  border: 1px solid var(--border-strong);
  border-radius: 28px;
  padding: 40px 32px;
  text-align: center;
}

.cta-banner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  margin: 0 0 10px;
}

.cta-banner p {
  margin: 0 auto 24px;
  max-width: 560px;
  color: var(--ink-muted);
}

.cta-banner .store-actions {
  justify-content: center;
  margin-bottom: 0;
}

/* Footer */
.footer {
  padding: 34px 0 46px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a:hover {
  color: var(--ink);
}

/* Subpages (privacy / support) */
.doc-wrap {
  padding: 48px 0 64px;
}

.doc-card {
  max-width: 780px;
  margin-inline: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}

.doc-card h1 {
  font-family: var(--font-display);
  margin-top: 0;
}

.doc-card h2 {
  color: #4ade80;
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-top: 1.7rem;
}

.doc-card p,
.doc-card li {
  color: var(--ink-muted);
}

.doc-card strong {
  color: var(--ink);
}

.doc-card a {
  color: #4ade80;
  text-decoration: underline;
}

@media (max-width: 920px) {
  .hero-grid,
  .demo-card {
    grid-template-columns: 1fr;
  }

  .bento-grid,
  .rules-grid {
    grid-template-columns: 1fr;
  }

  .bento-card.span-2 {
    grid-column: span 1;
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 520px) {
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .float-tile {
    display: none;
  }
}