/* ============================================================
   STILLNESS MEDITATION APP — STYLES
   ============================================================ */

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

:root {
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --transition: 0.2s ease;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
  --container: 1200px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font-body); background: var(--bg); color: var(--text); line-height: 1.65; font-size: 15px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 740px; }

h1, h2, h3 { font-family: var(--font-heading); font-weight: 600; line-height: 1.2; }
h4 { font-family: var(--font-heading); font-weight: 500; }
h1 { font-size: clamp(2.6rem, 5.5vw, 4.8rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.9rem, 3.5vw, 3rem); letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; }

.eyebrow { font-family: var(--font-heading); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.eyebrow-light { font-family: var(--font-heading); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--lavender); margin-bottom: 12px; }
.accent-text { color: var(--accent); }
.light { color: #fff; }
.section-pad { padding: 100px 0; }
.bg-alt { background: var(--bg-alt); }
.section-dark { background: var(--primary); }
.section-cta { background: var(--primary-dark); }

.section-head { text-align: center; margin-bottom: 60px; }
.section-sub { color: var(--text-muted); max-width: 560px; margin: 16px auto 0; }
.section-sub.light { color: rgba(255,255,255,0.6); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 28px; border-radius: var(--radius-sm); font-family: var(--font-heading); font-size: 0.88rem; font-weight: 600; letter-spacing: 0.01em; text-decoration: none; border: none; cursor: pointer; transition: all var(--transition); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); }
.btn-ghost-light { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.25); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.2); }
.btn-outline { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn-outline:hover { background: var(--accent-light); }
.btn-lg { padding: 16px 36px; font-size: 0.95rem; }
.btn-block { width: 100%; margin-top: auto; }

/* Navbar */
#navbar { position: sticky; top: 0; z-index: 100; background: rgba(26,26,46,0.9); backdrop-filter: blur(20px); border-bottom: 1px solid transparent; transition: border-color var(--transition); }
#navbar.scrolled { border-bottom-color: rgba(255,255,255,0.08); }
.nav-inner { display: flex; align-items: center; height: 72px; gap: 40px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo-icon { width: 36px; height: 36px; background: var(--accent); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; flex-shrink: 0; }
.logo-text-wrap { display: flex; flex-direction: column; line-height: 1; }
.logo-main { font-family: var(--font-heading); font-size: 1.2rem; font-weight: 700; color: #fff; letter-spacing: -0.01em; }
.logo-sub { font-size: 0.58rem; font-weight: 500; letter-spacing: 0.16em; color: rgba(255,255,255,0.4); text-transform: uppercase; margin-top: 2px; }
.nav-links { display: flex; gap: 28px; flex: 1; justify-content: center; }
.nav-links a { text-decoration: none; color: rgba(255,255,255,0.65); font-size: 0.88rem; transition: color var(--transition); }
.nav-links a:hover { color: #fff; }
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-login { color: rgba(255,255,255,0.7); text-decoration: none; font-size: 0.88rem; transition: color var(--transition); }
.nav-login:hover { color: #fff; }
#navToggle { display: none; background: none; border: none; cursor: pointer; color: rgba(255,255,255,0.8); padding: 4px; }
#navMobile { display: none; position: fixed; inset: 0; background: var(--primary); z-index: 200; flex-direction: column; padding: 80px 40px 40px; transform: translateX(100%); transition: transform 0.3s ease; }
#navMobile.open { transform: none; }
#navMobile nav { display: flex; flex-direction: column; gap: 24px; }
#navMobile nav a { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 600; color: rgba(255,255,255,0.85); text-decoration: none; }
#navClose { position: absolute; top: 24px; right: 24px; background: none; border: none; cursor: pointer; color: rgba(255,255,255,0.7); }

/* Hero */
.hero { position: relative; min-height: 90vh; display: flex; flex-direction: column; justify-content: flex-end; background: var(--primary-dark); overflow: hidden; }
.hero-bg-wrap { position: absolute; inset: 0; }
.hero-bg-img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0.25; }
.hero-bg-overlay { position: absolute; inset: 0; background: linear-gradient(to top, var(--primary-dark) 30%, rgba(15,15,30,0.4) 100%); }
.hero-body { position: relative; z-index: 2; padding-bottom: 80px; padding-top: 120px; }
.hero-text { max-width: 680px; }
.hero-text h1 { color: #fff; margin: 12px 0 24px; }
.hero-sub { color: rgba(255,255,255,0.7); max-width: 520px; line-height: 1.75; margin-bottom: 36px; font-size: 1.05rem; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 16px; }
.hero-note { color: rgba(255,255,255,0.45); font-size: 0.82rem; }
.hero-stats-row { display: flex; gap: 0; margin-top: 56px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 36px; }
.hero-stat { flex: 1; padding-right: 32px; }
.hero-stat + .hero-stat { padding-left: 32px; border-left: 1px solid rgba(255,255,255,0.1); }
.hero-stat strong { display: block; font-family: var(--font-heading); font-size: 2rem; font-weight: 700; color: #fff; letter-spacing: -0.02em; }
.hero-stat span { font-size: 0.78rem; color: rgba(255,255,255,0.5); margin-top: 4px; display: block; }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: transform var(--transition), box-shadow var(--transition); }
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.feature-icon { width: 52px; height: 52px; background: var(--accent-light); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--accent); margin-bottom: 18px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.7; }

/* Sessions */
.sessions-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.session-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); overflow: hidden; transition: transform var(--transition); }
.session-card:hover { transform: translateY(-4px); }
.session-img-wrap { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.session-img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0.75; }
.session-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,15,30,0.7) 0%, transparent 60%); }
.play-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 48px; height: 48px; border-radius: 50%; background: rgba(255,255,255,0.2); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,0.3); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all var(--transition); }
.play-btn:hover { background: var(--accent); border-color: var(--accent); }
.session-type { position: absolute; bottom: 12px; left: 12px; background: var(--accent); color: #fff; font-size: 0.68rem; font-weight: 600; letter-spacing: 0.1em; padding: 3px 10px; border-radius: 50px; text-transform: uppercase; }
.session-body { padding: 18px; }
.session-category { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--lavender); margin-bottom: 6px; }
.session-title { font-family: var(--font-heading); font-size: 1.05rem; font-weight: 600; color: #fff; margin-bottom: 12px; }
.session-meta { display: flex; align-items: center; justify-content: space-between; }
.session-duration { display: flex; align-items: center; gap: 5px; font-size: 0.78rem; color: rgba(255,255,255,0.5); }
.session-teacher { font-size: 0.78rem; color: rgba(255,255,255,0.4); }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.pricing-card { background: var(--bg); border: 1.5px solid var(--border); border-radius: var(--radius); padding: 36px; display: flex; flex-direction: column; gap: 24px; position: relative; transition: transform var(--transition), box-shadow var(--transition); }
.pricing-card:hover { transform: translateY(-3px); }
.pricing-card.popular { background: var(--primary); border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.popular-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; padding: 5px 16px; border-radius: 50px; white-space: nowrap; text-transform: uppercase; }
.save-badge { position: absolute; top: 20px; right: 20px; background: var(--sage); color: #fff; font-size: 0.68rem; font-weight: 700; padding: 3px 10px; border-radius: 50px; }
.plan-name { font-family: var(--font-heading); font-size: 0.85rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }
.pricing-card.popular .plan-name { color: rgba(255,255,255,0.6); }
.plan-price { display: flex; align-items: baseline; gap: 4px; }
.price-amount { font-family: var(--font-heading); font-size: 2.8rem; font-weight: 700; color: var(--text); letter-spacing: -0.02em; }
.pricing-card.popular .price-amount { color: #fff; }
.price-period { font-size: 0.9rem; color: var(--text-muted); }
.pricing-card.popular .price-period { color: rgba(255,255,255,0.55); }
.plan-features { list-style: none; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.plan-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: var(--text-muted); }
.pricing-card.popular .plan-features li { color: rgba(255,255,255,0.75); }
.plan-features li svg { flex-shrink: 0; margin-top: 2px; color: var(--sage); }

/* Reviews */
.rating-row { display: flex; align-items: center; gap: 12px; justify-content: center; margin-top: 16px; }
.rating-score { font-family: var(--font-heading); font-size: 2.4rem; font-weight: 700; color: var(--text); }
.stars { display: flex; gap: 2px; }
.rating-count { font-size: 0.88rem; color: var(--text-muted); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.review-stars { display: flex; gap: 2px; margin-bottom: 16px; }
.review-quote { font-size: 0.92rem; line-height: 1.75; color: var(--text); margin-bottom: 22px; }
.review-author { display: flex; align-items: center; gap: 14px; }
.review-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.review-author strong { display: block; font-size: 0.9rem; font-weight: 600; color: var(--text); }
.review-author span { font-size: 0.78rem; color: var(--text-muted); }

/* FAQ */
.faq-list { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-q { width: 100%; background: none; border: none; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; text-align: left; font-family: var(--font-heading); font-size: 1rem; font-weight: 500; color: var(--text); transition: background var(--transition); }
.faq-q:hover { background: var(--bg); }
.faq-icon { flex-shrink: 0; transition: transform 0.2s ease; }
.faq-item.open .faq-icon { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p { padding: 0 24px 20px; color: var(--text-muted); font-size: 0.9rem; line-height: 1.75; }

/* Download / CTA */
.cta-content { text-align: center; max-width: 640px; margin: 0 auto; }
.cta-content h2 { margin: 12px 0 20px; }
.cta-sub { color: rgba(255,255,255,0.6); margin-bottom: 40px; font-size: 1rem; }
.store-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.store-btn { display: flex; align-items: center; gap: 12px; padding: 14px 24px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius-sm); text-decoration: none; color: #fff; transition: all var(--transition); min-width: 180px; }
.store-btn:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.35); }
.store-btn > div { display: flex; flex-direction: column; line-height: 1.2; }
.store-label { font-size: 0.72rem; color: rgba(255,255,255,0.55); }
.store-name { font-family: var(--font-heading); font-size: 1rem; font-weight: 600; }

/* Footer */
footer { background: var(--primary-dark); color: rgba(255,255,255,0.5); padding: 72px 0 32px; border-top: 1px solid rgba(255,255,255,0.06); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 56px; }
.footer-brand { display: flex; flex-direction: column; gap: 10px; }
.footer-brand .logo-main { font-family: var(--font-heading); font-size: 1.3rem; font-weight: 700; color: #fff; }
.footer-brand p { font-size: 0.85rem; color: rgba(255,255,255,0.4); max-width: 240px; line-height: 1.6; }
.footer-email { font-size: 0.85rem; color: var(--lavender); text-decoration: none; }
.social-links { display: flex; gap: 10px; margin-top: 4px; }
.social-links a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border: 1px solid rgba(255,255,255,0.12); border-radius: 50%; color: rgba(255,255,255,0.5); text-decoration: none; transition: all var(--transition); }
.social-links a:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.footer-col h5 { font-family: var(--font-heading); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: rgba(255,255,255,0.3); margin-bottom: 18px; }
.footer-col a { display: block; text-decoration: none; color: rgba(255,255,255,0.55); font-size: 0.88rem; margin-bottom: 11px; transition: color var(--transition); }
.footer-col a:hover { color: var(--lavender); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; font-size: 0.82rem; color: rgba(255,255,255,0.25); }

/* Back to top */
#backTop { position: fixed; bottom: 28px; right: 28px; width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; transform: translateY(12px); transition: opacity var(--transition), transform var(--transition); }
#backTop.visible { opacity: 1; transform: none; }

/* Reveal */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in-view { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 1100px) {
  .sessions-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
}
@media (max-width: 900px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .reviews-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links, .nav-login { display: none; }
  #navToggle { display: flex; }
  #navMobile { display: flex; }
  .section-pad { padding: 72px 0; }
  .hero-stats-row { flex-wrap: wrap; gap: 0; }
  .hero-stat { min-width: 50%; }
  .hero-stat + .hero-stat:nth-child(3) { border-left: none; padding-left: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .features-grid { grid-template-columns: 1fr; }
  .sessions-grid { grid-template-columns: 1fr; }
  .store-buttons { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; }
}