/* AI Business Academy — clean, warm, trustworthy */
:root {
  --ink: #22303f;
  --ink-soft: #4c5b6b;
  --navy: #1e3a5f;
  --amber: #e8a33d;
  --amber-dark: #c97f1b;
  --cream: #faf6ef;
  --white: #ffffff;
  --line: #e7ded1;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(30, 58, 95, 0.08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 780px; }

h1, h2, h3 { line-height: 1.25; color: var(--navy); letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 18px; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); margin-bottom: 12px; }
h3 { font-size: 1.2rem; margin-bottom: 8px; }

a { color: var(--navy); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 700;
  border-radius: 999px;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
  text-align: center;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--amber);
  color: #3a2703;
  box-shadow: 0 6px 18px rgba(232, 163, 61, 0.35);
}
.btn-primary:hover { background: var(--amber-dark); color: #fff; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--line);
}
.btn-ghost:hover { border-color: var(--navy); transform: translateY(-1px); }
.btn-lg { padding: 16px 34px; font-size: 1.05rem; }
.btn-sm { padding: 10px 22px; font-size: 0.95rem; }
.btn-block { display: block; width: 100%; }

/* ---------- Nav ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 1140px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--navy); color: var(--amber);
  font-weight: 800; font-size: 1rem;
}
.brand-name { font-weight: 800; color: var(--navy); font-size: 1.1rem; }
.nav-links { display: flex; gap: 22px; }
.nav-links a { text-decoration: none; color: var(--ink-soft); font-weight: 600; font-size: 0.98rem; }
.nav-links a:hover { color: var(--navy); }
.nav-toggle { display: none; background: none; border: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--navy); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(180deg, var(--cream) 0%, #fff 100%); padding: 72px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--amber-dark); margin-bottom: 14px;
}
.eyebrow .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--amber); display: inline-block; }
.lede { font-size: 1.18rem; color: var(--ink-soft); margin-bottom: 28px; max-width: 34em; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.hero-note { font-size: 0.92rem; color: var(--ink-soft); }
.hero-media { position: relative; }
.hero-media img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; height: auto; aspect-ratio: 4/5; object-fit: cover; }
.hero-card {
  position: absolute; left: 18px; bottom: 18px; right: 18px;
  background: rgba(255, 255, 255, 0.97); border-radius: 12px; padding: 14px 18px;
  box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 2px;
}
.hero-card strong { color: var(--navy); }
.hero-card span { font-size: 0.9rem; color: var(--ink-soft); }

/* ---------- Strip ---------- */
.strip { background: var(--navy); color: #fff; padding: 26px 0; }
.strip .container { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.strip-title { font-weight: 700; color: var(--amber); white-space: nowrap; }
.strip-list { list-style: none; display: flex; gap: 10px 26px; flex-wrap: wrap; }
.strip-list li { font-size: 0.98rem; opacity: 0.92; }
.strip-list li::before { content: "✓ "; color: var(--amber); font-weight: 700; }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--cream); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .eyebrow { justify-content: center; }
.section-sub { color: var(--ink-soft); font-size: 1.08rem; }

/* ---------- Personas ---------- */
.persona-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.persona-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  transition: transform 0.15s ease;
}
.persona-card:hover { transform: translateY(-4px); }
.persona-card img { width: 100%; aspect-ratio: 4/4.4; object-fit: cover; }
.persona-body { padding: 22px; }
.persona-body p { font-size: 0.97rem; color: var(--ink-soft); }

/* ---------- Lessons ---------- */
.lesson-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.lesson-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
}
.lesson-video { position: relative; background: #0f1c2b; aspect-ratio: 16/9; }
.lesson-video video { width: 100%; height: 100%; object-fit: cover; }
.preview-tag {
  position: absolute; top: 12px; left: 12px;
  background: rgba(15, 28, 43, 0.85); color: #fff;
  font-size: 0.78rem; font-weight: 700; padding: 5px 12px; border-radius: 999px;
  letter-spacing: 0.04em;
}
.lesson-body { padding: 26px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.lesson-num { font-size: 0.82rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.1em; color: var(--amber-dark); }
.lock-note {
  margin-top: auto; padding-top: 12px;
  font-size: 0.9rem; font-weight: 600; color: var(--ink-soft);
  border-top: 1px dashed var(--line);
}

/* ---------- Steps ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: step; }
.step {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; box-shadow: var(--shadow); position: relative;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--navy); color: var(--amber);
  font-weight: 800; font-size: 1.25rem; margin-bottom: 16px;
}
.step p { color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- Pricing ---------- */
.pricing-card {
  max-width: 520px; margin: 0 auto; background: var(--white);
  border: 2px solid var(--amber); border-radius: 18px;
  padding: 44px 40px; text-align: center; box-shadow: var(--shadow);
}
.pricing-badge {
  display: inline-block; background: var(--navy); color: #fff;
  font-size: 0.85rem; font-weight: 700; padding: 7px 18px; border-radius: 999px;
  margin-bottom: 20px;
}
.price { font-size: 4rem; font-weight: 800; color: var(--navy); line-height: 1; }
.price .currency { font-size: 2rem; vertical-align: top; }
.price-sub { color: var(--ink-soft); margin: 8px 0 24px; }
.pricing-list { list-style: none; text-align: left; margin: 0 auto 28px; max-width: 340px; display: grid; gap: 12px; }
.pricing-list li::before { content: "✓ "; color: var(--amber-dark); font-weight: 800; }
.pricing-note { font-size: 0.9rem; color: var(--ink-soft); margin-top: 18px; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line); border-radius: 12px; background: var(--white); overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 20px 24px; font-size: 1.05rem; font-weight: 700; color: var(--navy);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-family: var(--font);
}
.faq-q::after { content: "+"; font-size: 1.5rem; color: var(--amber-dark); flex-shrink: 0; transition: transform 0.2s ease; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.25s ease; }
.faq-a p { padding: 0 24px 22px; color: var(--ink-soft); }
.faq-item.open .faq-a { max-height: 300px; }

/* ---------- Final CTA ---------- */
.final-cta { background: var(--navy); color: #fff; text-align: center; padding: 84px 0; }
.final-cta h2 { color: #fff; margin-bottom: 14px; }
.final-cta p { color: rgba(255, 255, 255, 0.85); margin-bottom: 28px; font-size: 1.08rem; }
.final-note { margin-top: 18px !important; margin-bottom: 0 !important; font-size: 0.92rem !important; color: rgba(255, 255, 255, 0.7) !important; }

/* ---------- Footer ---------- */
.site-footer { background: #12263f; color: rgba(255, 255, 255, 0.8); padding: 56px 0 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 40px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { margin-top: 10px; font-size: 0.95rem; }
.footer-contact a { color: var(--amber); }
.footer-small { font-size: 0.85rem; opacity: 0.7; max-width: 420px; margin-top: 10px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.12); padding: 20px 24px; font-size: 0.88rem; opacity: 0.7; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero { padding: 52px 0 48px; }
  .persona-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 12px 24px 20px;
    border-bottom: 1px solid var(--line); gap: 4px;
  }
  .nav-links a { padding: 10px 0; border-top: 1px solid var(--line); }
  .site-nav { position: sticky; }
  .nav-inner { position: relative; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .site-nav .btn-sm { margin-left: 0; }
}
@media (max-width: 640px) {
  .lesson-grid { grid-template-columns: 1fr; }
  .persona-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .hero-ctas .btn { width: 100%; }
  .pricing-card { padding: 32px 24px; }
}