/* ============================================
   NEW BALLET SCHOOL — Belvedere Marittimo (CS)
   Design system: cinematic dark · gold · white
   ============================================ */

:root {
  --bg: #06060f;
  --bg-2: #0b0b1a;
  --bg-3: #101024;
  --gold: #f2a93b;
  --gold-light: #ffc866;
  --gold-deep: #c9821a;
  --white: #ffffff;
  --ink: #eaeaf2;
  --muted: #9a9ab4;
  --line: rgba(242, 169, 59, 0.25);
  --serif: "Playfair Display", Georgia, serif;
  --sans: "Montserrat", -apple-system, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--gold); color: #000; }

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

a { color: inherit; text-decoration: none; }

/* ---------- grain overlay ---------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

/* ---------- typography ---------- */
h1, h2, h3, .serif {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--white);
}

.eyebrow {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
  display: block;
}

.gold { color: var(--gold); }
.italic-gold { font-style: italic; color: var(--gold); font-weight: 500; }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 4vw;
  transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

.nav.scrolled {
  background: rgba(6, 6, 15, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 rgba(242, 169, 59, 0.18);
  padding: 0.7rem 4vw;
}

.nav-logo { display: flex; align-items: center; gap: 0.75rem; }
.nav-logo img { height: 46px; width: auto; transition: height 0.4s ease; }
.nav.scrolled .nav-logo img { height: 38px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.nav-links a {
  position: relative;
  padding: 0.3rem 0;
  color: var(--ink);
  transition: color 0.3s;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s ease;
}

.nav-links a:hover { color: var(--gold); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

.nav-cta {
  border: 1px solid var(--gold);
  padding: 0.55rem 1.4rem !important;
  color: var(--gold) !important;
  transition: background 0.3s, color 0.3s !important;
}
.nav-cta:hover { background: var(--gold); color: #000 !important; }
.nav-cta::after { display: none; }

/* burger */
.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
  width: 34px; height: 26px;
  position: relative;
}
.burger span {
  position: absolute;
  left: 0; width: 100%; height: 2px;
  background: var(--gold);
  transition: all 0.3s ease;
}
.burger span:nth-child(1) { top: 2px; }
.burger span:nth-child(2) { top: 12px; }
.burger span:nth-child(3) { top: 22px; }
.burger.open span:nth-child(1) { top: 12px; transform: rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { top: 12px; transform: rotate(-45deg); }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img, .hero-bg svg {
  width: 100%; height: 100%;
  object-fit: cover;
  animation: heroZoom 18s ease-out forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to   { transform: scale(1); }
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(6,6,15,0.25) 0%, rgba(6,6,15,0.78) 75%),
    linear-gradient(to bottom, rgba(6,6,15,0.55) 0%, rgba(6,6,15,0.15) 40%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 8rem 5vw 6rem;
  max-width: 1000px;
}

.hero h1 {
  font-size: clamp(2.6rem, 7.5vw, 5.6rem);
  letter-spacing: 0.01em;
  margin: 1rem 0 1.6rem;
}

.hero h1 em {
  font-style: italic;
  font-weight: 500;
  color: var(--gold);
}

.hero p.lead {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 2.6rem;
  font-weight: 300;
}

/* anniversary badge */
.anniv {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.75rem;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--gold-light);
  font-weight: 600;
}
.anniv::before, .anniv::after {
  content: "";
  width: 52px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.anniv::after { background: linear-gradient(90deg, var(--gold), transparent); }

/* buttons */
.btn-row { display: flex; gap: 1.2rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  padding: 1rem 2.6rem;
  border: 1px solid var(--gold);
  color: #000;
  background: var(--gold);
  position: relative;
  overflow: hidden;
  transition: color 0.35s, background 0.35s, box-shadow 0.35s, transform 0.2s;
}
.btn:hover {
  background: var(--gold-light);
  box-shadow: 0 0 34px rgba(242, 169, 59, 0.4);
  transform: translateY(-2px);
}

.btn.wa {
  background: #25d366;
  border-color: #25d366;
  color: #052e16;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}
.btn.wa svg { width: 18px; height: 18px; fill: currentColor; }
.btn.wa:hover {
  background: #40e57e;
  border-color: #40e57e;
  box-shadow: 0 0 34px rgba(37, 211, 102, 0.45);
}

.btn.ghost { background: transparent; color: var(--gold); }
.btn.ghost:hover { background: rgba(242,169,59,0.12); box-shadow: 0 0 24px rgba(242,169,59,0.2); }

/* scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  width: 1px; height: 64px;
  background: rgba(242,169,59,0.35);
  overflow: hidden;
}
.scroll-hint::after {
  content: "";
  position: absolute;
  top: -40%; left: 0;
  width: 100%; height: 40%;
  background: var(--gold);
  animation: scrollDrop 2s ease-in-out infinite;
}
@keyframes scrollDrop {
  0% { top: -40%; }
  100% { top: 110%; }
}

/* ---------- marquee ---------- */
.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 1.1rem 0;
  background: var(--bg-2);
  white-space: nowrap;
}
.marquee-track {
  display: inline-flex;
  gap: 3.4rem;
  animation: marquee 36s linear infinite;
  will-change: transform;
}
.marquee span {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 3.4rem;
}
.marquee span::after { content: "✦"; color: var(--gold); font-size: 0.7rem; font-style: normal; }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ---------- sections ---------- */
.section {
  padding: 7.5rem 5vw;
  max-width: 1280px;
  margin: 0 auto;
}

.section-head { max-width: 720px; margin-bottom: 4rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(2rem, 4.4vw, 3.2rem); margin-bottom: 1.2rem; }
.section-head p { color: var(--muted); font-weight: 300; }

/* ---------- decade / numbers ---------- */
.decade {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 5vw;
  align-items: center;
}

.decade-num {
  font-family: var(--serif);
  font-size: clamp(9rem, 22vw, 19rem);
  line-height: 0.85;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--gold);
  position: relative;
  user-select: none;
}
.decade-num sup {
  font-size: 0.22em;
  -webkit-text-stroke: 1px var(--gold);
  vertical-align: super;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  padding-top: 2.4rem;
}
.stat b {
  display: block;
  font-family: var(--serif);
  font-size: 2.4rem;
  color: var(--gold);
  font-weight: 600;
}
.stat span { font-size: 0.8rem; color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- courses grid ---------- */
.courses-section { background: var(--bg-2); }
.courses-wrap { max-width: 1280px; margin: 0 auto; padding: 7.5rem 5vw; }

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.6rem;
}

.course-card {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--bg-3);
  display: block;
  border: 1px solid rgba(255,255,255,0.05);
  transition: border-color 0.4s;
}
.course-card:hover { border-color: var(--gold); }

.course-card img, .course-card .card-art {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.9s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s;
  filter: saturate(0.85) brightness(0.8);
}
.course-card:hover img, .course-card:hover .card-art {
  transform: scale(1.07);
  filter: saturate(1.05) brightness(0.95);
}

.course-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4,4,12,0.94) 8%, rgba(4,4,12,0.25) 55%, transparent 100%);
  z-index: 1;
}

.course-info {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 1.7rem 1.6rem;
  transform: translateY(14px);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.course-card:hover .course-info { transform: translateY(0); }

.course-info .tag {
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
}
.course-info h3 {
  font-size: 1.5rem;
  margin: 0.4rem 0 0.5rem;
}
.course-info .go {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-light);
  font-weight: 600;
  opacity: 0;
  transition: opacity 0.45s 0.05s;
}
.course-card:hover .go { opacity: 1; }
.course-info .go::after { content: "→"; transition: transform 0.3s; }
.course-card:hover .go::after { transform: translateX(5px); }

/* ---------- wellness / about ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 5vw;
  align-items: center;
}
.split-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
}
.split-media img, .split-media svg { width: 100%; height: 100%; object-fit: cover; }
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 80px rgba(6,6,15,0.75);
}
.split-media .frame {
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(242,169,59,0.35);
  pointer-events: none;
}

.checklist { list-style: none; margin-top: 1.8rem; }
.checklist li {
  position: relative;
  padding: 0.45rem 0 0.45rem 2rem;
  color: var(--ink);
  font-weight: 300;
}
.checklist li::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--gold);
  font-size: 0.8rem;
  top: 0.62rem;
}

/* ---------- video reel ---------- */
.reel-section {
  background:
    radial-gradient(ellipse 60% 80% at 85% 50%, rgba(242,169,59,0.08), transparent),
    var(--bg);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.reel-split {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6vw;
  align-items: center;
}
.reel-phone {
  position: relative;
  width: min(340px, 78vw);
  aspect-ratio: 9 / 16;
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid rgba(242,169,59,0.55);
  box-shadow:
    0 0 0 6px rgba(242,169,59,0.06),
    0 30px 80px rgba(0,0,0,0.65),
    0 0 60px rgba(242,169,59,0.12);
  background: #000;
  margin: 0 auto;
}
.reel-phone video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.reel-phone .audio-btn {
  position: absolute;
  right: 14px; bottom: 14px;
  z-index: 3;
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: rgba(6,6,15,0.72);
  backdrop-filter: blur(8px);
  color: var(--gold);
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, transform 0.2s, box-shadow 0.3s;
}
.reel-phone .audio-btn:hover {
  background: var(--gold);
  color: #000;
  transform: scale(1.08);
  box-shadow: 0 0 24px rgba(242,169,59,0.5);
}
.reel-badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 3;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gold-light);
  background: rgba(6,6,15,0.72);
  border: 1px solid rgba(242,169,59,0.4);
  padding: 0.42rem 0.85rem;
  border-radius: 999px;
  backdrop-filter: blur(8px);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.reel-badge::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--gold);
  animation: livePulse 1.8s ease-in-out infinite;
}
@keyframes livePulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(242,169,59,0.5); }
  50% { opacity: 0.55; box-shadow: 0 0 0 6px rgba(242,169,59,0); }
}

@media (max-width: 900px) {
  .reel-split { grid-template-columns: 1fr; }
  .reel-split > div:first-child { text-align: center; }
  .reel-split .checklist { display: inline-block; text-align: left; }
  .reel-split .btn-row { justify-content: center !important; }
}

/* ---------- promo pill (hero) ---------- */
.promo-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.6rem;
  padding: 0.55rem 1.3rem;
  border: 1px solid rgba(242,169,59,0.5);
  border-radius: 999px;
  background: rgba(242,169,59,0.1);
  backdrop-filter: blur(6px);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-light);
  transition: background 0.3s, box-shadow 0.3s, transform 0.2s;
}
.promo-pill:hover {
  background: rgba(242,169,59,0.22);
  box-shadow: 0 0 28px rgba(242,169,59,0.35);
  transform: translateY(-1px);
}
.promo-pill .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
  animation: livePulse 1.8s ease-in-out infinite;
}
.promo-pill::after { content: "→"; transition: transform 0.3s; }
.promo-pill:hover::after { transform: translateX(4px); }

/* ---------- eventi ---------- */
.event-section {
  background:
    radial-gradient(ellipse 55% 75% at 12% 40%, rgba(242,169,59,0.09), transparent),
    var(--bg-2);
  border-top: 1px solid var(--line);
}
.event-split {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6vw;
  align-items: center;
}
.event-split.rev { grid-template-columns: 1fr auto; }
.event-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(242,169,59,0.4), transparent);
  margin: 5.5rem 0;
}
.event-poster {
  position: relative;
  width: min(360px, 80vw);
  aspect-ratio: 9 / 16;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(242,169,59,0.55);
  box-shadow:
    0 0 0 6px rgba(242,169,59,0.06),
    0 30px 80px rgba(0,0,0,0.65),
    0 0 60px rgba(242,169,59,0.14);
  background: #000;
  margin: 0 auto;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.event-poster:hover { transform: scale(1.02) rotate(-0.5deg); }
.event-poster img { width: 100%; height: 100%; object-fit: cover; display: block; }
.event-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--gold-light);
  margin-top: 0.4rem;
}
.event-quote {
  border-left: 2px solid var(--gold);
  padding-left: 1.2rem;
  margin: 1.6rem 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.12rem;
  color: var(--ink);
  line-height: 1.6;
}
.event-meta {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 2rem;
  margin: 1.8rem 0 0;
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
}
.event-meta b {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.25rem;
}
.event-meta span {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--white);
}
.event-gallery {
  margin-top: 3.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.event-gallery figure {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  background: var(--bg-3);
}
.event-gallery img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s;
  filter: saturate(0.9) brightness(0.88);
}
.event-gallery figure:hover img { transform: scale(1.06); filter: saturate(1.05) brightness(1); }

@media (max-width: 900px) {
  .event-split { grid-template-columns: 1fr; }
  .event-split > div:last-child { text-align: center; }
  .event-split .event-quote { text-align: left; }
  .event-meta { text-align: left; }
}

/* ---------- gallery ---------- */
.masonry {
  columns: 3 300px;
  column-gap: 1.1rem;
}
.masonry figure {
  break-inside: avoid;
  margin: 0 0 1.1rem;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  background: var(--bg-3);
}
.masonry img {
  width: 100%;
  display: block;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s;
  filter: saturate(0.94) brightness(0.9);
}
.masonry figure:hover img { transform: scale(1.05); filter: saturate(1.05) brightness(1); }
.masonry figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 1.6rem 1.1rem 0.9rem;
  background: linear-gradient(to top, rgba(4,4,12,0.9), transparent);
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--ink);
  letter-spacing: 0.04em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.45s, transform 0.45s;
}
.masonry figure:hover figcaption { opacity: 1; transform: none; }

/* ---------- location ---------- */
.location {
  background:
    radial-gradient(ellipse 70% 90% at 50% 110%, rgba(242,169,59,0.13), transparent),
    var(--bg-2);
  border-top: 1px solid var(--line);
  text-align: center;
}
.location .addr {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  color: var(--white);
  font-style: italic;
  margin: 1.4rem 0 0.6rem;
}
.location .city { color: var(--gold); font-size: 1rem; letter-spacing: 0.24em; text-transform: uppercase; font-weight: 600; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 3.4rem 5vw 2.2rem;
  background: #050510;
}
.footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
}
.footer-grid h4 {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
  font-family: var(--sans);
  font-weight: 700;
}
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 0.55rem; }
.footer-grid a { color: var(--muted); font-size: 0.9rem; font-weight: 300; transition: color 0.3s; }
.footer-grid a:hover { color: var(--gold-light); }
.footer-grid p { color: var(--muted); font-size: 0.9rem; font-weight: 300; }

.social-links {
  display: flex;
  gap: 0.9rem;
  margin-top: 1.3rem;
}
.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: color 0.3s, background 0.3s, border-color 0.3s, box-shadow 0.3s, transform 0.2s;
}
.social-links a:hover {
  color: #000;
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 22px rgba(242, 169, 59, 0.4);
  transform: translateY(-2px);
}
.social-links svg { width: 19px; height: 19px; }

.footer-bottom {
  max-width: 1280px;
  margin: 2.6rem auto 0;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.75rem;
  color: #5c5c74;
}

/* ---------- course page ---------- */
.page-hero {
  position: relative;
  min-height: 68vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.page-hero .hero-bg::after {
  background:
    linear-gradient(to bottom, rgba(6,6,15,0.6) 0%, rgba(6,6,15,0.25) 45%, var(--bg) 100%);
}
.page-hero-content {
  position: relative;
  z-index: 2;
  padding: 9rem 5vw 4.5rem;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}
.page-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  margin-top: 0.8rem;
}
.breadcrumb {
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb .sep { margin: 0 0.6rem; color: var(--gold); }

.course-body {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 5vw;
  align-items: start;
}
.course-body .desc p { color: var(--ink); font-weight: 300; margin-bottom: 1.3rem; font-size: 1.02rem; }
.course-body .desc p:first-of-type {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-style: italic;
  color: var(--white);
  line-height: 1.5;
}

.course-aside {
  border: 1px solid var(--line);
  padding: 2.2rem 2rem;
  background: var(--bg-2);
  position: sticky;
  top: 96px;
}
.course-aside h3 {
  font-size: 1.1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-family: var(--sans);
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 1.3rem;
}
.style-list { list-style: none; }
.style-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  font-family: var(--serif);
  font-size: 1.12rem;
  color: var(--ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.style-list li:last-child { border-bottom: none; }
.style-list li::after { content: "✦"; color: var(--gold); font-size: 0.65rem; }
.course-aside .btn { width: 100%; text-align: center; margin-top: 1.8rem; }

/* other courses strip */
.more-courses { border-top: 1px solid var(--line); background: var(--bg-2); }
.more-courses .courses-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.more-courses .course-card { aspect-ratio: 4 / 4.4; }

/* ---------- reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.1s; }
.reveal.d2 { transition-delay: 0.2s; }
.reveal.d3 { transition-delay: 0.3s; }
.reveal.d4 { transition-delay: 0.4s; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(5, 5, 14, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 2rem;
    font-size: 1rem;
    transform: translateY(-100%);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 105;
  }
  .nav-links.open { transform: translateY(0); }
  .burger { display: block; }

  .decade { grid-template-columns: 1fr; text-align: center; }
  .decade-num { margin: 0 auto; }
  .stats { grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
  .split, .course-body { grid-template-columns: 1fr; }
  .course-aside { position: static; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 540px) {
  .stats { grid-template-columns: 1fr; }
  .stat { border-bottom: 1px solid rgba(255,255,255,0.06); padding-bottom: 1rem; }
}