/* ============================================
   SCUBAVERSITY — Design Tokens
   Concept: Surface → Depth. The site descends
   like a real dive, using PADI depth ratings as
   the structural spine (0m / 5m / 18m / 30m /
   40m) since that's how courses genuinely
   progress — not a decorative numbering.
   ============================================ */

:root {
  --ink: #0A1418;
  --navy-deep: #0B2A3D;
  --teal: #157A6E;
  --aqua: #4FB8C4;
  --foam: #F4F7F5;
  --coral: #E8734A;
  --surface-light: #EAF6F6;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--foam);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

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

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(244, 247, 245, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(11, 42, 61, 0.08);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  color: var(--navy-deep);
  letter-spacing: -0.01em;
}

.logo span { color: var(--coral); }

.logo-img { display: flex; align-items: center; }
.logo-img img { height: auto; display: block; }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a {
  color: var(--navy-deep);
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--coral); }

.nav-cta {
  background: var(--coral);
  color: white !important;
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.88rem;
}

.nav-toggle { display: none; }

/* ---------- Hero: the surface ---------- */
.hero {
  background:
    linear-gradient(180deg, rgba(11,42,61,0.55) 0%, rgba(10,20,24,0.78) 100%),
    url('../img/hero.jpg') center 30% / cover no-repeat;
  padding: 140px 24px 150px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--aqua);
  margin-bottom: 18px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  font-weight: 600;
  line-height: 1.02;
  color: white;
  max-width: 780px;
  letter-spacing: -0.01em;
}

.hero p.lede {
  font-size: 1.15rem;
  max-width: 560px;
  margin-top: 22px;
  color: rgba(255,255,255,0.9);
}

/* ---------- Credentials strip ---------- */
.creds { background: white; border-bottom: 1px solid rgba(11,42,61,0.08); }
.creds-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.cred-padi { height: 54px; width: auto; }
.cred-badge { height: 72px; width: auto; border-radius: 4px; }
.cred-divider { width: 1px; height: 48px; background: rgba(11,42,61,0.15); }
.cred-text { font-size: 0.95rem; color: rgba(10,20,24,0.75); flex: 1; }
.cred-text strong { color: var(--navy-deep); }
@media (max-width: 720px) {
  .creds-inner { flex-wrap: wrap; gap: 16px; justify-content: center; text-align: center; }
  .cred-divider { display: none; }
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--navy-deep);
  color: white;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(11,42,61,0.25); }

.btn-secondary {
  background: transparent;
  color: var(--navy-deep);
  border: 1.5px solid var(--navy-deep);
}
.btn-secondary:hover { background: rgba(11,42,61,0.06); }

/* ---------- Depth spine: course progression ---------- */
.depth-section {
  background: var(--foam);
  padding: 20px 24px 100px;
}

.depth-header {
  max-width: var(--max-width);
  margin: 0 auto 56px;
  text-align: center;
}

.depth-header .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}

.depth-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: var(--navy-deep);
  margin-top: 10px;
}

.depth-spine {
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
}

.depth-spine::before {
  content: '';
  position: absolute;
  left: 68px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--aqua), var(--navy-deep));
  opacity: 0.35;
}

.depth-row {
  display: grid;
  grid-template-columns: 136px 1fr;
  gap: 32px;
  padding: 32px 0;
  align-items: start;
}

.depth-marker {
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--teal);
  text-align: right;
  padding-right: 32px;
}

.depth-marker::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--aqua);
  border: 3px solid var(--foam);
  box-shadow: 0 0 0 2px var(--aqua);
}

.depth-marker .m { display: block; font-size: 1.3rem; color: var(--navy-deep); font-weight: 700; }

.depth-card {
  background: white;
  border-radius: 8px;
  padding: 28px 32px;
  border: 1px solid rgba(11,42,61,0.07);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.depth-card:hover { box-shadow: 0 12px 32px rgba(11,42,61,0.1); transform: translateY(-2px); }

.depth-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--navy-deep);
  margin-bottom: 8px;
}

.depth-card p { color: rgba(10,20,24,0.7); font-size: 0.98rem; margin-bottom: 14px; }

.depth-card a.more { color: var(--coral); font-weight: 600; font-size: 0.9rem; }
.depth-card a.more:hover { text-decoration: underline; }

/* ---------- Trips strip ---------- */
.trips-section {
  background: var(--navy-deep);
  padding: 90px 24px;
  color: var(--foam);
}

.trips-inner { max-width: var(--max-width); margin: 0 auto; }

.trips-section .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--aqua);
}

.trips-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-top: 10px;
  margin-bottom: 44px;
  max-width: 600px;
}

.trip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.trip-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 24px;
  transition: background 0.2s ease;
}
.trip-card:hover { background: rgba(255,255,255,0.1); }

.trip-card h4 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 6px; }
.trip-card p { font-size: 0.88rem; opacity: 0.75; }

/* ---------- About / stats ---------- */
.about-section {
  padding: 90px 24px;
  background: var(--foam);
}

.about-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.about-grid .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
}

.about-grid h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  color: var(--navy-deep);
  margin: 10px 0 20px;
}

.about-grid p { color: rgba(10,20,24,0.75); margin-bottom: 16px; }

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat-card {
  background: white;
  border: 1px solid rgba(11,42,61,0.08);
  border-radius: 8px;
  padding: 24px;
}

.stat-card .num {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 600;
  color: var(--coral);
  display: block;
}

.stat-card .label {
  font-size: 0.85rem;
  color: rgba(10,20,24,0.6);
  margin-top: 4px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(244,247,245,0.7);
  padding: 60px 24px 30px;
}

.footer-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(244,247,245,0.1);
}

.footer-grid h5 {
  color: var(--foam);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 10px; font-size: 0.9rem; }
.footer-grid a:hover { color: var(--aqua); }

.footer-brand .logo { color: var(--foam); margin-bottom: 12px; display: inline-block; }
.footer-brand p { font-size: 0.88rem; max-width: 280px; }

.footer-bottom {
  max-width: var(--max-width);
  margin: 24px auto 0;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .depth-spine::before { left: 44px; }
  .depth-row { grid-template-columns: 76px 1fr; gap: 16px; }
  .depth-marker { padding-right: 16px; }
  .depth-marker .m { font-size: 1.05rem; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================
   Interior pages: hero, course pricing, blocks
   ============================================ */

.page-hero {
  background: linear-gradient(160deg, var(--navy-deep), var(--ink));
  color: white;
  padding: 72px 24px 60px;
}
.page-hero .hero-eyebrow { color: var(--aqua); margin-bottom: 14px; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 600;
  line-height: 1.05;
  max-width: 760px;
}
.page-lede { max-width: 640px; margin-top: 18px; color: rgba(255,255,255,0.82); font-size: 1.05rem; }
.page-lede a { color: var(--aqua); text-decoration: underline; }

/* Sticky sub-nav */
.course-toc {
  display: flex;
  gap: 8px;
  padding: 16px 24px;
  flex-wrap: wrap;
  position: sticky;
  top: 69px;
  background: rgba(244,247,245,0.95);
  backdrop-filter: blur(6px);
  z-index: 50;
  border-bottom: 1px solid rgba(11,42,61,0.08);
  margin: 0 auto;
}
.course-toc a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--teal);
  padding: 6px 14px;
  border: 1px solid rgba(21,122,110,0.25);
  border-radius: 20px;
  transition: all 0.15s ease;
}
.course-toc a:hover { background: var(--teal); color: white; }

.course-block { padding: 64px 24px; }
.course-block.alt { background: var(--surface-light); }

.block-head { max-width: 640px; margin-bottom: 40px; }
.block-depth {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--coral);
}
.block-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  color: var(--navy-deep);
  margin: 8px 0 12px;
}
.block-head p { color: rgba(10,20,24,0.7); }
.block-head a { color: var(--coral); text-decoration: underline; }

.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.price-card {
  background: white;
  border: 1px solid rgba(11,42,61,0.08);
  border-radius: 10px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.price-card:hover { box-shadow: 0 14px 34px rgba(11,42,61,0.12); transform: translateY(-3px); }

.price-card.featured {
  border: 1.5px solid var(--teal);
  box-shadow: 0 8px 24px rgba(21,122,110,0.1);
}

.price-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--navy-deep);
  margin-bottom: 10px;
}
.pc-desc { font-size: 0.94rem; color: rgba(10,20,24,0.68); flex: 1; margin-bottom: 18px; }

.pc-prices {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid rgba(11,42,61,0.08);
  margin-bottom: 16px;
}
.pc-tier { display: flex; flex-direction: column; }
.pc-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(10,20,24,0.5);
  margin-bottom: 2px;
}
.pc-amt {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy-deep);
}
.price-card.featured .pc-amt { color: var(--teal); }

.pc-cta { color: var(--coral); font-weight: 600; font-size: 0.9rem; }
.pc-cta:hover { text-decoration: underline; }

.booking-note {
  background: var(--navy-deep);
  color: white;
  padding: 72px 24px;
  text-align: center;
}
.booking-note h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 14px;
}
.booking-note p { max-width: 560px; margin: 0 auto 28px; color: rgba(255,255,255,0.82); }
.note-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.booking-note .btn-secondary { color: white; border-color: rgba(255,255,255,0.5); }
.booking-note .btn-secondary:hover { background: rgba(255,255,255,0.1); }

@media (max-width: 720px) {
  .course-toc { top: 61px; }
}

/* ---------- Booking page ---------- */
.book-steps { padding: 64px 24px; background: var(--foam); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.step-card {
  background: white;
  border: 1px solid rgba(11,42,61,0.08);
  border-radius: 10px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.step-num {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--aqua);
  color: var(--navy-deep);
  border-radius: 50%;
  margin-bottom: 18px;
}
.step-card h3 { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy-deep); margin-bottom: 10px; }
.step-card p { font-size: 0.94rem; color: rgba(10,20,24,0.68); flex: 1; margin-bottom: 20px; }

.calendar-section { padding: 64px 24px 80px; background: var(--surface-light); }
.cal-embed {
  background: white;
  border-radius: 10px;
  padding: 12px;
  border: 1px solid rgba(11,42,61,0.08);
  overflow: hidden;
}
.cal-embed iframe { display: block; border-radius: 6px; }
.cal-fallback { text-align: center; margin-top: 16px; font-size: 0.9rem; color: rgba(10,20,24,0.6); }
.cal-fallback a { color: var(--coral); text-decoration: underline; }

.cal-cta { text-align: center; margin-top: 24px; }
.cal-cta .cal-fallback { margin-top: 12px; }

/* ---------- Detail pages (courses / trips) ---------- */
.nav-links a.active { color: var(--coral); }

.detail-hero {
  background-size: cover;
  background-position: center;
  color: white;
  padding: 90px 24px 70px;
}
.detail-hero .hero-eyebrow { color: var(--aqua); }
.detail-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 600;
  max-width: 760px;
  line-height: 1.05;
}

.detail-body { padding: 64px 24px 80px; background: var(--foam); }
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}
.detail-block { margin-bottom: 36px; }
.detail-block h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--navy-deep);
  margin-bottom: 10px;
}
.detail-block p { color: rgba(10,20,24,0.75); }

.detail-aside {
  background: white;
  border: 1px solid rgba(11,42,61,0.08);
  border-radius: 10px;
  padding: 28px;
  position: sticky;
  top: 90px;
}
.detail-aside h3 { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy-deep); margin-bottom: 16px; }
.price-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.price-table th {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: rgba(10,20,24,0.5); text-align: right; padding: 6px 0; font-weight: 600;
}
.price-table th:first-child { text-align: left; }
.price-table td { padding: 9px 0; border-top: 1px solid rgba(11,42,61,0.08); font-size: 0.92rem; }
.price-table td.pm, .price-table td.pn { text-align: right; font-family: var(--font-mono); font-weight: 600; color: var(--navy-deep); }
.price-table td.pm { color: var(--teal); }
.aside-note { font-size: 0.82rem; color: rgba(10,20,24,0.6); margin-bottom: 18px; }
.aside-note a { color: var(--coral); text-decoration: underline; }
.back-link { display: inline-block; margin-top: 16px; color: var(--teal); font-size: 0.9rem; font-weight: 600; }
.back-link:hover { text-decoration: underline; }

@media (max-width: 820px) {
  .detail-layout { grid-template-columns: 1fr; }
  .detail-aside { position: static; }
}

/* ---------- Card grids (trips, blog, club) ---------- */
.card-section { padding: 64px 24px 80px; background: var(--foam); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}
.info-card {
  background: white;
  border: 1px solid rgba(11,42,61,0.08);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.info-card:hover { box-shadow: 0 14px 34px rgba(11,42,61,0.12); transform: translateY(-3px); }
.info-card .ic-img { height: 180px; background-size: cover; background-position: center; background-color: var(--aqua); }
.info-card .ic-body { padding: 22px 24px; display: flex; flex-direction: column; flex: 1; }
.info-card .ic-tag {
  font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--teal); margin-bottom: 8px;
}
.info-card h3 { font-family: var(--font-display); font-size: 1.25rem; color: var(--navy-deep); margin-bottom: 8px; }
.info-card p { font-size: 0.92rem; color: rgba(10,20,24,0.68); flex: 1; margin-bottom: 16px; }
.info-card .ic-link { color: var(--coral); font-weight: 600; font-size: 0.9rem; }
.info-card .ic-link:hover { text-decoration: underline; }

/* ---------- Simple content pages (about/contact) ---------- */
.content-section { padding: 64px 24px 80px; background: var(--foam); }
.content-narrow { max-width: 760px; margin: 0 auto; }
.content-narrow h2 { font-family: var(--font-display); font-size: 1.6rem; color: var(--navy-deep); margin: 32px 0 12px; }
.content-narrow p { color: rgba(10,20,24,0.78); margin-bottom: 14px; }
.content-narrow ul { margin: 0 0 16px 20px; color: rgba(10,20,24,0.78); }
.content-narrow li { margin-bottom: 8px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; max-width: 900px; margin: 0 auto; }
.contact-card { background: white; border: 1px solid rgba(11,42,61,0.08); border-radius: 10px; padding: 32px; }
.contact-card h3 { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy-deep); margin-bottom: 16px; }
.contact-row { display: flex; flex-direction: column; margin-bottom: 16px; }
.contact-row .cr-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(10,20,24,0.5); margin-bottom: 3px; }
.contact-row a, .contact-row span { color: var(--navy-deep); font-weight: 500; }
.contact-row a:hover { color: var(--coral); }
@media (max-width: 700px) { .contact-grid { grid-template-columns: 1fr; } }