/* AdLaika website — design system shared with the AdLaika app. */
:root {
  --ink: #131331;
  --ink-soft: #4c4c6d;
  --purple: #7b2ff2;
  --purple-deep: #5b21b6;
  --teal: #17b8a6;
  --amber: #f6a609;
  --bg: #f7f7fb;
  --card: #ffffff;
  --line: #e6e6f0;
  --radius: 16px;
  --font-display: "Sora", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --shadow: 0 12px 34px rgba(19, 19, 49, 0.10);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--ink); background: var(--bg); line-height: 1.6; font-size: 16px; }
img { max-width: 100%; display: block; }
a { color: var(--purple-deep); text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.015em; line-height: 1.15; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-logo img { height: 34px; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { color: var(--ink); font-weight: 600; font-size: 0.94rem; }
.nav-links a:hover { color: var(--purple-deep); }
.btn {
  display: inline-block; font-weight: 700; border-radius: 12px;
  padding: 12px 22px; font-size: 0.95rem; border: none; cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.2s ease;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(120deg, var(--purple), var(--purple-deep));
  box-shadow: 0 8px 22px rgba(123, 47, 242, 0.30);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(123, 47, 242, 0.40); }
.btn-outline { color: var(--ink); background: #fff; border: 2px solid var(--line); }
.btn-outline:hover { border-color: var(--purple); color: var(--purple-deep); }
.nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--ink); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(246, 166, 9, 0.14), transparent 60%),
    radial-gradient(1100px 700px at -10% 110%, rgba(23, 184, 166, 0.12), transparent 55%),
    linear-gradient(160deg, #ffffff 0%, #f3edff 100%);
}
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding: 88px 0 96px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--purple-deep); background: rgba(123, 47, 242, 0.09);
  padding: 7px 14px; border-radius: 999px; margin-bottom: 22px;
}
.eyebrow .spark { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); }
.hero h1 { font-size: clamp(2.3rem, 4.6vw, 3.6rem); margin-bottom: 20px; }
.hero h1 .grad {
  background: linear-gradient(100deg, var(--purple) 10%, var(--teal) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lede { font-size: 1.13rem; color: var(--ink-soft); max-width: 480px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: 0.85rem; color: var(--ink-soft); }

/* Hero ad-construction collage */
.hero-stage { position: relative; min-height: 440px; }
.trajectory { position: absolute; inset: 0; width: 100%; height: 100%; }
.ad-card {
  position: absolute; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; width: 250px;
}
.ad-card .thumb { height: 120px; }
.ad-card .body { padding: 14px 16px 16px; }
.ad-card .kicker { font-size: 0.66rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(--ink-soft); }
.ad-card h4 { font-family: var(--font-display); font-size: 0.98rem; margin: 4px 0 10px; }
.ad-card .chip {
  display: inline-block; font-size: 0.72rem; font-weight: 700; color: #fff;
  background: var(--purple); border-radius: 999px; padding: 5px 12px;
}
.card-a { top: 8%; left: 4%; transform: rotate(-4deg); animation: float 7s ease-in-out infinite; }
.card-b { top: 34%; right: 2%; transform: rotate(3deg); animation: float 8s ease-in-out 0.8s infinite; }
.card-c { bottom: 2%; left: 18%; transform: rotate(-2deg); animation: float 9s ease-in-out 1.6s infinite; }
@keyframes float {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -12px; }
}
.thumb-a { background: linear-gradient(135deg, var(--purple) 0%, var(--purple-deep) 100%); }
.thumb-b { background: linear-gradient(135deg, var(--teal) 0%, #0d8b7c 100%); }
.thumb-c { background: linear-gradient(135deg, var(--amber) 0%, #d98c00 100%); }
.assemble-tag {
  position: absolute; top: -2%; right: 16%;
  background: var(--ink); color: #fff; font-size: 0.74rem; font-weight: 700;
  border-radius: 999px; padding: 8px 16px; box-shadow: var(--shadow);
}

/* ---------- Sections ---------- */
section { padding: 88px 0; }
.section-head { max-width: 620px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 10px 0 14px; }
.section-head p { color: var(--ink-soft); font-size: 1.05rem; }
.center { text-align: center; margin-left: auto; margin-right: auto; }

/* How it works — a genuine sequence */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.step {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; position: relative;
}
.step .num {
  font-family: var(--font-display); font-weight: 700; font-size: 0.8rem;
  color: var(--purple-deep); background: rgba(123, 47, 242, 0.09);
  width: 34px; height: 34px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.step h3 { font-size: 1.08rem; margin-bottom: 8px; }
.step p { font-size: 0.92rem; color: var(--ink-soft); }

/* Features */
.features { background: var(--ink); color: #fff; }
.features .section-head h2, .features .section-head .eyebrow { color: #fff; }
.features .section-head .eyebrow { background: rgba(255, 255, 255, 0.10); }
.features .section-head p { color: rgba(255, 255, 255, 0.72); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature {
  background: rgba(255, 255, 255, 0.045); border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: var(--radius); padding: 26px 24px;
  transition: transform 0.15s ease, background 0.2s ease;
}
.feature:hover { transform: translateY(-4px); background: rgba(255, 255, 255, 0.08); }
.feature .icon {
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 18px;
  display: flex; align-items: center; justify-content: center;
}
.feature .icon svg { width: 22px; height: 22px; }
.icon-purple { background: rgba(123, 47, 242, 0.28); }
.icon-teal { background: rgba(23, 184, 166, 0.24); }
.icon-amber { background: rgba(246, 166, 9, 0.22); }
.feature h3 { font-size: 1.04rem; margin-bottom: 8px; }
.feature p { font-size: 0.9rem; color: rgba(255, 255, 255, 0.70); }

/* Blog cards */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.post-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.15s ease, box-shadow 0.2s ease; display: flex; flex-direction: column;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.post-card .banner { height: 130px; }
.post-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.post-card .meta { font-size: 0.76rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 8px; }
.post-card h3 { font-size: 1.06rem; margin-bottom: 8px; }
.post-card h3 a { color: var(--ink); }
.post-card h3 a:hover { color: var(--purple-deep); }
.post-card p { font-size: 0.9rem; color: var(--ink-soft); flex: 1; }
.post-card .read { margin-top: 16px; font-weight: 700; font-size: 0.88rem; }

/* Single post */
.post-hero { padding: 72px 0 36px; }
.post-hero .meta { font-size: 0.8rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 12px; }
.post-hero h1 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); max-width: 760px; }
.post-body { max-width: 720px; padding-bottom: 88px; }
.post-body p { margin-bottom: 20px; font-size: 1.03rem; color: #2c2c4a; }
.post-body h2 { font-size: 1.4rem; margin: 36px 0 14px; }

/* CTA band */
.cta-band {
  background:
    radial-gradient(700px 340px at 12% 0%, rgba(246, 166, 9, 0.20), transparent 60%),
    linear-gradient(140deg, var(--purple-deep), var(--purple));
  border-radius: 24px; color: #fff; padding: 64px 56px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(1.5rem, 2.8vw, 2rem); max-width: 520px; }
.cta-band .btn { background: #fff; color: var(--purple-deep); }

/* Contact / forms */
.form-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px; max-width: 620px; box-shadow: var(--shadow);
}
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-family: var(--font-body); font-size: 0.96rem; background: #fbfbfe;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--purple); background: #fff; outline: none;
  box-shadow: 0 0 0 3px rgba(123, 47, 242, 0.14);
}
.field textarea { min-height: 150px; resize: vertical; }
.form-msg { border-radius: 10px; padding: 12px 14px; font-size: 0.9rem; margin-bottom: 18px; display: none; }
.form-msg.ok { display: block; background: rgba(23, 184, 166, 0.12); border: 1px solid rgba(23, 184, 166, 0.4); color: #0c7f72; }
.form-msg.err { display: block; background: #fef3f2; border: 1px solid #fecdca; color: #d92d20; }

/* Footer */
.footer { background: var(--ink); color: rgba(255, 255, 255, 0.75); padding: 56px 0 36px; margin-top: 40px; }
.footer-grid { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; margin-bottom: 36px; }
.footer .f-logo { background: #fff; border-radius: 12px; padding: 9px 14px; display: inline-block; }
.footer .f-logo img { height: 30px; }
.footer .f-tag { margin-top: 14px; max-width: 300px; font-size: 0.9rem; }
.footer h4 { color: #fff; font-family: var(--font-display); font-size: 0.94rem; margin-bottom: 14px; }
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer a { color: rgba(255, 255, 255, 0.75); font-size: 0.9rem; }
.footer a:hover { color: #fff; }
.footer .legal { border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 24px; font-size: 0.82rem; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; padding: 56px 0 64px; }
  .hero-stage { min-height: 380px; }
  .steps, .feature-grid, .post-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; padding: 18px 24px; align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .steps, .feature-grid, .post-grid { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  .cta-band { padding: 44px 28px; }
  .ad-card { width: 200px; }
}
@media (prefers-reduced-motion: reduce) {
  .ad-card { animation: none !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}