/* Hue: Color Merge Puzzle — shared stylesheet
   System-font stack, no external fonts/JS, mobile-first, RTL-aware. */

:root {
  --bg: #faf9f7;
  --bg-alt: #f1efe9;
  --text: #1b1a17;
  --text-muted: #5a564e;
  --accent: #5b8def;
  --accent-dark: #3f6bd6;
  --card-bg: #ffffff;
  --border: #e5e1d8;

  --c-red: #e85d5d;
  --c-yellow: #f2c94c;
  --c-blue: #5b8def;
  --c-orange: #f2994a;
  --c-green: #6fcf7b;
  --c-purple: #9b6fde;

  --radius: 14px;
  --max-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --bg-alt: #1c1b16;
    --text: #f3f1ea;
    --text-muted: #b6b1a4;
    --accent: #7fa6f5;
    --accent-dark: #9db9f7;
    --card-bg: #201f19;
    --border: #322f26;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

img, svg {
  max-width: 100%;
}

a {
  color: var(--accent-dark);
}

.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* Header */
header.site-header {
  padding-block: 1.1rem;
  border-block-end: 1px solid var(--border);
}

header.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.logo .dot {
  width: 0.7em;
  height: 0.7em;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-blue), var(--c-purple));
  display: inline-block;
}

.lang-note {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Hero */
.hero {
  padding-block: 3.2rem 2.6rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero p.pitch {
  max-width: 640px;
  margin: 0 auto 1.75rem;
  font-size: 1.1rem;
  color: var(--text-muted);
}

.cta-row {
  display: flex;
  gap: 0.9rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  border-color: var(--accent);
  color: var(--accent-dark);
}

.chip-row {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.chip {
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.chip.red { background: var(--c-red); }
.chip.yellow { background: var(--c-yellow); }
.chip.blue { background: var(--c-blue); }
.chip.orange { background: var(--c-orange); }
.chip.green { background: var(--c-green); }
.chip.purple { background: var(--c-purple); }

/* Sections */
main section {
  padding-block: 2.6rem;
}

main section h2 {
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  text-align: center;
  margin: 0 0 2rem;
  letter-spacing: -0.01em;
}

.features {
  background: var(--bg-alt);
  border-radius: calc(var(--radius) * 1.4);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.1rem;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.3rem;
}

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

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

/* FAQ */
.faq-list {
  max-width: 760px;
  margin-inline: auto;
}

.faq-item {
  border-block-end: 1px solid var(--border);
  padding-block: 1.1rem;
}

.faq-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.faq-item p {
  margin: 0;
  color: var(--text-muted);
}

/* Language switcher */
.lang-switch {
  border-block-start: 1px solid var(--border);
  padding-block: 1.1rem;
}

.lang-switch .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: center;
  font-size: 0.85rem;
}

.lang-switch a {
  color: var(--text-muted);
  text-decoration: none;
}

.lang-switch a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

.lang-switch a.current {
  color: var(--text);
  font-weight: 700;
}

/* Footer */
footer.site-footer {
  border-block-start: 1px solid var(--border);
  padding-block: 2rem;
  margin-top: 1rem;
}

footer.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
}

footer.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

footer.site-footer a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

/* RTL override */
[dir="rtl"] .chip-row,
[dir="rtl"] .cta-row {
  direction: rtl;
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
    text-align: center;
  }
  .cta-row {
    flex-direction: column;
  }
}