/* ===== Analytica Academy — theme matched to analytica-data.com ===== */

:root {
  --background: #fcfcfc;
  --foreground: #21323b;
  --muted-foreground: #5b6b73;
  --primary: #265973;        /* deep slate-blue */
  --accent: #29a399;         /* teal */
  --card: #ffffff;
  --border: #dde1e4;
  --muted: #eef1f2;
  --radius: 0.75rem;
  --shadow-glow: 0 0 30px rgba(41, 163, 153, 0.15), 0 0 60px rgba(38, 89, 115, 0.08);
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: auto; }

body {
  font-family: var(--font-sans);
  background: var(--background);
  color: var(--foreground);
  line-height: 1.55;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section { position: relative; padding: 6rem 0; }
@media (max-width: 640px) { section { padding: 4rem 0; } }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(41, 163, 153, 0.08);
  border: 1px solid rgba(41, 163, 153, 0.2);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.02em; color: var(--foreground); }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 3.5rem; }
.section-head p { color: var(--muted-foreground); font-size: 1.05rem; margin-top: 0.75rem; }

.text-gradient {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  box-shadow: 0 8px 24px rgba(38, 89, 115, 0.25);
}
.btn-primary:hover { box-shadow: 0 10px 30px rgba(41, 163, 153, 0.35); }
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--foreground);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ---- Nav ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(252, 252, 252, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; height: 4.25rem; }
.logo { font-size: 1.15rem; font-weight: 800; letter-spacing: -0.02em; }
.logo span { color: var(--foreground); font-weight: 500; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a { font-size: 0.92rem; font-weight: 500; color: var(--muted-foreground); transition: color 0.15s ease; }
.nav-links a:hover { color: var(--foreground); }
.nav-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle { display: none; background: none; border: none; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 22px; height: 2px; background: var(--foreground);
  position: relative; transition: all 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after { position: absolute; top: 7px; }

/* Raised from 860px: with 8 nav links the row runs out of space well before
   860px — the logo wraps to two lines and "Talk To Us" overlaps the last link. */
@media (max-width: 1080px) {
  .nav-links { position: fixed; top: 4.25rem; left: 0; right: 0; background: var(--background);
    border-bottom: 1px solid var(--border); flex-direction: column; align-items: flex-start;
    padding: 1.5rem; gap: 1.25rem; transform: translateY(-150%); transition: transform 0.25s ease; }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: block; }
}

/* ---- Hero ---- */
.hero {
  padding-top: 9rem;
  padding-bottom: 6rem;
  text-align: center;
  overflow: hidden;
}
.hero-glow {
  position: absolute; inset: -20% -10% auto -10%; height: 620px;
  background: radial-gradient(circle at 30% 30%, rgba(41,163,153,0.16), transparent 60%),
              radial-gradient(circle at 70% 60%, rgba(38,89,115,0.16), transparent 60%);
  filter: blur(40px);
  z-index: -1;
  animation: float 8s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-18px); } }

.hero h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); max-width: 820px; margin: 0 auto 1.25rem; }
.hero p.lead { font-size: 1.15rem; color: var(--muted-foreground); max-width: 620px; margin: 0 auto 2.25rem; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-bottom: 3rem; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
  max-width: 780px; margin: 0 auto;
}
.hero-stats .stat { padding: 1.25rem 0.5rem; border-left: 1px solid var(--border); }
.hero-stats .stat:first-child { border-left: none; }
.hero-stats .stat b { display: block; font-size: 1.6rem; color: var(--primary); }
.hero-stats .stat span { font-size: 0.82rem; color: var(--muted-foreground); }
@media (max-width: 640px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats .stat:nth-child(3) { border-left: none; }
}

.hero-inner { display: flex; flex-direction: column; align-items: center; gap: 3rem; }
.hero-media { max-width: 480px; width: 100%; }
.hero-media img { width: 100%; border-radius: 1.25rem; }
@media (min-width: 960px) {
  .hero-inner { flex-direction: row; text-align: left; gap: 3.5rem; }
  .hero-text { flex: 1 1 54%; }
  .hero-media { flex: 1 1 42%; }
  .hero-text h1, .hero-text p.lead, .hero-stats { margin-left: 0; margin-right: 0; }
  .hero-actions, .hero-stats { justify-content: flex-start; }
}

/* ---- Why illustration ---- */
.why-illustration { max-width: 640px; margin: 0 auto 3.5rem; }
.why-illustration img { width: 100%; border-radius: 1.25rem; box-shadow: var(--shadow-glow); }

/* ---- Pillars ---- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
@media (max-width: 860px) { .pillars { grid-template-columns: 1fr; } }
.pillar {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 2rem; transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.pillar:hover { box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.pillar .icon {
  width: 44px; height: 44px; border-radius: 0.6rem; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(41,163,153,0.15), rgba(38,89,115,0.15));
  color: var(--primary); margin-bottom: 1.1rem; font-size: 1.3rem;
}
.pillar p { color: var(--muted-foreground); font-size: 0.95rem; margin-top: 0.5rem; }

/* ---- Tracks (main focus) ---- */
.tracks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
@media (max-width: 900px) { .tracks { grid-template-columns: 1fr; } }
.track-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 1.25rem;
  padding: 2.5rem; position: relative; overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.track-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); }
.track-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
}
.track-card.bi::before { background: linear-gradient(90deg, var(--accent), transparent); }
.track-card.agentic::before { background: linear-gradient(90deg, var(--primary), transparent); }
.track-icon { width: 64px; height: 64px; margin-bottom: 1.25rem; }
.track-card .track-tag {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 0.3rem 0.7rem; border-radius: 9999px; margin-bottom: 1rem;
}
.track-card.bi .track-tag { background: rgba(41,163,153,0.12); color: var(--accent); }
.track-card.agentic .track-tag { background: rgba(38,89,115,0.12); color: var(--primary); }
.track-card h3 { font-size: 1.5rem; margin-bottom: 0.6rem; }
.track-card > p.desc { color: var(--muted-foreground); margin-bottom: 1.5rem; }
.track-list { display: grid; gap: 0.65rem; margin-bottom: 1.75rem; }
.track-list li { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.92rem; }
.track-list li::before {
  content: "✓"; flex-shrink: 0; width: 20px; height: 20px; border-radius: 50%;
  background: var(--muted); color: var(--accent); font-size: 0.7rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center; margin-top: 0.1rem;
}
.track-meta { display: flex; gap: 1.5rem; font-size: 0.85rem; color: var(--muted-foreground); margin-bottom: 1.75rem; flex-wrap: wrap; }
.track-meta span { display: flex; align-items: center; gap: 0.4rem; }
.track-audience { font-size: 0.85rem; color: var(--muted-foreground); border-top: 1px solid var(--border); padding-top: 1.25rem; margin-bottom: 1.25rem; }

/* ---- Leadership Program (AI for CEOs) ---- */
/* Own tinted band so it reads as a distinct programme and doesn't disturb
   the white/muted alternation of the surrounding sections. */
.leadership-band {
  background: linear-gradient(180deg, rgba(41,163,153,0.06), rgba(38,89,115,0.07));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.leadership-stats {
  display: grid; grid-template-columns: repeat(2, 1fr);
  max-width: 320px; margin: -1.75rem auto 3rem; text-align: center;
}
.leadership-stats .lstat { padding: 0.5rem; border-left: 1px solid var(--border); }
.leadership-stats .lstat:first-child { border-left: none; }
.leadership-stats .lstat b { display: block; font-size: 1.5rem; color: var(--primary); }
.leadership-stats .lstat span { font-size: 0.8rem; color: var(--muted-foreground); }
@media (max-width: 600px) {
  .leadership-stats { grid-template-columns: repeat(2, 1fr); gap: 1rem 0; }
  .leadership-stats .lstat:nth-child(odd) { border-left: none; }
}

.levels-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.level-card {
  position: relative; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.75rem 1.5rem 1.5rem;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.level-card:hover { box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.level-num {
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em;
  color: var(--accent); margin-bottom: 0.5rem;
}
.level-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.level-card .desc {
  color: var(--muted-foreground); font-size: 0.88rem; line-height: 1.5;
  padding-bottom: 1rem; margin-bottom: 1rem; border-bottom: 1px solid var(--border);
}
.level-list { display: grid; gap: 0.5rem; }
.level-list li {
  display: flex; align-items: flex-start; gap: 0.5rem;
  font-size: 0.85rem; color: var(--muted-foreground);
}
.level-list li::before { content: "-"; color: var(--accent); flex-shrink: 0; }

/* Level 10 closes the programme — span the full row so it reads as a capstone
   rather than an orphan card left over at the end of the grid. */
.level-card.capstone { grid-column: 1 / -1; border-color: rgba(41,163,153,0.35); }
.level-card.capstone .desc { border-bottom: none; padding-bottom: 0; margin-bottom: 1.25rem; }
.level-card.capstone .level-list {
  grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
  border-top: 1px solid var(--border); padding-top: 1.25rem; gap: 0.75rem 1.25rem;
}

.leadership-cta { text-align: center; margin-top: 3rem; }
.leadership-cta p {
  color: var(--muted-foreground); font-size: 0.95rem;
  max-width: 520px; margin: 0 auto 1.25rem;
}

/* Entry point to quiz.html. Lives here rather than in the nav — the nav is at
   its 8-link ceiling (see the 1080px breakpoint note above). */
.quiz-promo {
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
  margin-top: 2.5rem; padding: 1.75rem 2rem;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
}
.quiz-promo h3 { font-size: 1.15rem; margin: 0.35rem 0 0.5rem; }
.quiz-promo p { color: var(--muted-foreground); font-size: 0.9rem; max-width: 46ch; margin: 0; }
.quiz-promo .btn { flex-shrink: 0; }
@media (max-width: 720px) {
  .quiz-promo { flex-direction: column; align-items: flex-start; }
  .quiz-promo .btn { width: 100%; text-align: center; justify-content: center; }
}

/* ---- Sessions for Business Teams ---- */
.sessions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.75rem; }
.session-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.75rem; transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.session-card:hover { box-shadow: var(--shadow-glow); transform: translateY(-4px); }
.session-card h3 { font-size: 1.05rem; margin-bottom: 0.6rem; }
.session-card .desc { color: var(--muted-foreground); font-size: 0.9rem; margin-bottom: 1.1rem; }
.session-list { display: grid; gap: 0.5rem; }
.session-list li { display: flex; align-items: flex-start; gap: 0.5rem; font-size: 0.85rem; color: var(--muted-foreground); }
.session-list li::before { content: "•"; color: var(--accent); font-weight: 700; flex-shrink: 0; }

/* ---- Instructors ---- */
.instructors { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
@media (max-width: 860px) { .instructors { grid-template-columns: 1fr; } }
.instructor-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 2rem; text-align: center;
}
.instructor-avatar {
  width: 76px; height: 76px; border-radius: 50%; margin: 0 auto 1.1rem;
  background: linear-gradient(135deg, rgba(41,163,153,0.25), rgba(38,89,115,0.25));
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.3rem; color: var(--primary);
}
.instructor-card h4 { margin-bottom: 0.15rem; }
.instructor-card .role { font-size: 0.82rem; color: var(--accent); font-weight: 600; margin-bottom: 0.75rem; }
.instructor-card p.bio { font-size: 0.88rem; color: var(--muted-foreground); }

/* ---- Cohort / enrollment modal ---- */
.cf-overlay {
  position: fixed; inset: 0; z-index: 1000; background: rgba(15,23,28,0.6);
  display: flex; align-items: center; justify-content: center; padding: 1.5rem;
  overflow-y: auto;
}
.cf-overlay[hidden] { display: none; }
.cf-modal {
  position: relative; max-width: 780px; width: 100%; max-height: 90vh; overflow-y: auto;
  margin: auto; background: var(--card); border: 1px solid var(--border);
  border-radius: 1.25rem; padding: 3rem; text-align: center; box-shadow: var(--shadow-glow);
}
.cf-modal .badge {
  display: inline-block; font-size: 0.75rem; font-weight: 700; color: var(--accent);
  background: rgba(41,163,153,0.1); padding: 0.35rem 0.8rem; border-radius: 9999px; margin-bottom: 1.25rem;
}
.cf-modal-close {
  position: absolute; top: 1rem; right: 1.25rem; background: none; border: none;
  font-size: 1.75rem; line-height: 1; color: var(--muted-foreground); cursor: pointer; padding: 0.25rem;
}
.cf-modal-close:hover { color: var(--foreground); }
.cohort-details { display: flex; justify-content: center; gap: 2.5rem; margin: 2rem 0; flex-wrap: wrap; }
.cohort-details div b { display: block; font-size: 1.1rem; }
.cohort-details div span { font-size: 0.8rem; color: var(--muted-foreground); }
@media (max-width: 600px) { .cf-modal { padding: 2rem 1.5rem; } }

/* ---- Contact form ---- */
.contact-form { text-align: left; margin-top: 0.5rem; }
.cf-hp { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.cf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
@media (max-width: 640px) { .cf-row { grid-template-columns: 1fr; } }
.cf-field {
  display: flex; flex-direction: column; gap: 0.4rem;
  font-size: 0.85rem; font-weight: 600; color: var(--foreground);
}
.cf-field-label { font-size: 0.85rem; font-weight: 600; }
.cf-field input, .cf-field select {
  font: inherit; font-weight: 400; font-size: 0.95rem;
  padding: 0.7rem 0.9rem; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--background); color: var(--foreground);
}
.cf-field input:focus, .cf-field select:focus { outline: none; border-color: var(--accent); }
.cf-radio-row { display: flex; gap: 1.25rem; margin-top: 0.35rem; }
.cf-radio { display: flex; align-items: center; gap: 0.4rem; font-weight: 400; font-size: 0.95rem; }
.contact-form .btn { display: block; width: 100%; margin-top: 0.5rem; }
.cf-status { margin-top: 1rem; font-size: 0.9rem; text-align: center; }
.cf-status-ok { color: #1f8a72; }
.cf-status-error { color: #b4442f; }

/* ---- FAQ ---- */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  background: none; border: none; text-align: left; padding: 1.4rem 0; font-weight: 600; font-size: 1rem;
}
.faq-question .icon { font-size: 1.2rem; color: var(--accent); transition: transform 0.2s ease; flex-shrink: 0; margin-left: 1rem; }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.25s ease; }
.faq-answer p { padding-bottom: 1.4rem; color: var(--muted-foreground); font-size: 0.92rem; max-width: 680px; }

/* ---- Final CTA ---- */
.cta-banner {
  border-radius: 1.5rem; margin: 0 1.5rem; padding: 4rem 2rem; text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: rgba(255,255,255,0.85); max-width: 520px; margin: 0 auto 2rem; }
.cta-banner .btn-primary { background: #fff; color: var(--primary); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }
.cta-banner .btn-outline { border-color: rgba(255,255,255,0.4); color: #fff; }
.cta-banner .btn-outline:hover { border-color: #fff; color: #fff; }

/* ---- Footer ---- */
footer { background: #1b2a32; color: rgba(255,255,255,0.7); padding: 4rem 0 2rem; margin-top: 6rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 3rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: #fff; font-size: 0.85rem; letter-spacing: 0.05em; text-transform: uppercase; margin-bottom: 1rem; }
.footer-grid ul li { margin-bottom: 0.65rem; font-size: 0.88rem; }
.footer-grid ul li a:hover { color: #fff; }
.footer-brand .logo { color: #fff; }
.footer-brand .logo .text-gradient { background: none; color: #fff; }
.footer-brand p { font-size: 0.88rem; margin-top: 0.9rem; max-width: 280px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem;
  display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; flex-wrap: wrap; gap: 1rem;
}

/* ---- Webinars ---- */
.webinars-note { text-align: center; font-size: 0.9rem; color: var(--muted-foreground); max-width: 640px; margin: 0 auto; }
.webinars-note a { color: var(--accent); font-weight: 600; text-decoration: underline; }

/* ---- Reveal on scroll ---- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }