/* Oxford Centers — premium landing overlay (3D hero + branches + teachers) */

/* —— Hero split + 3D showcase —— */
.hero.has-showcase > .container {
  width: min(1200px, 94%);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: end;
  width: 100%;
}

@media (min-width: 960px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(1rem, 3vw, 2.5rem);
    align-items: center;
    min-height: calc(100svh - var(--nav-h) - 2rem);
  }
  .hero-inner {
    max-width: none;
  }
}

.hero-showcase {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
  perspective: 1100px;
}

.hero-orbs {
  pointer-events: none;
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-orbs span {
  position: absolute;
  border-radius: 50%;
  filter: blur(40px);
  animation: orbFloat 8s ease-in-out infinite;
}

.hero-orbs span:nth-child(1) {
  width: 180px;
  height: 180px;
  top: 10%;
  inset-inline-start: 5%;
  background: var(--emerald-glow);
  animation-delay: 0s;
}

.hero-orbs span:nth-child(2) {
  width: 140px;
  height: 140px;
  bottom: 15%;
  inset-inline-end: 8%;
  background: var(--accent-glow, rgba(201, 162, 39, 0.35));
  animation-delay: -3s;
}

.hero-orbs span:nth-child(3) {
  width: 100px;
  height: 100px;
  top: 45%;
  inset-inline-end: 30%;
  background: rgba(255, 255, 255, 0.12);
  animation-delay: -5s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(12px, -18px) scale(1.08); }
}

.hero-logo-stage {
  position: relative;
  z-index: 2;
  width: min(340px, 78vw);
  aspect-ratio: 1;
  transform-style: preserve-3d;
  animation: logoFloat 7s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: rotateY(-14deg) rotateX(8deg) translateY(0); }
  50% { transform: rotateY(-8deg) rotateX(4deg) translateY(-12px); }
}

.hero-logo-card {
  position: absolute;
  inset: 0;
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow:
    0 32px 64px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.06);
  display: grid;
  place-items: center;
  padding: 2rem;
}

.hero-logo-card img {
  width: min(220px, 70%);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.35));
}

.hero-logo-ring {
  position: absolute;
  inset: -12px;
  border-radius: 32px;
  border: 2px solid transparent;
  background: linear-gradient(135deg, var(--emerald-light), var(--accent-color, var(--emerald-soft)), var(--emerald)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.55;
  animation: ringPulse 4s ease-in-out infinite;
}

@keyframes ringPulse {
  0%, 100% { opacity: 0.45; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.02); }
}

.hero-badge-float {
  position: absolute;
  z-index: 3;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.95);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  white-space: nowrap;
}

.hero-badge-float.b1 { top: 8%; inset-inline-end: -4%; animation: badgeBob 5s ease-in-out infinite; }
.hero-badge-float.b2 { bottom: 12%; inset-inline-start: -6%; animation: badgeBob 5s ease-in-out -2s infinite; }

@keyframes badgeBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* —— Center switch pills —— */
.center-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.1rem;
}

.center-switch a {
  padding: 0.42rem 0.9rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.center-switch a:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.18);
}

.center-switch a.is-active {
  background: linear-gradient(145deg, var(--emerald-light), var(--emerald));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 20px var(--emerald-glow);
}

/* —— About platform —— */
.about-platform {
  padding: clamp(3rem, 7vw, 4.5rem) 0;
  background: linear-gradient(180deg, #fff, var(--paper));
}

.about-platform-lead {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.85;
  color: #334155;
  font-weight: 700;
}

.about-platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 1.75rem;
}

.about-platform-card {
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.07);
  border-radius: var(--radius);
  padding: 1.35rem 1.25rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease;
  transform-style: preserve-3d;
}

.about-platform-card:hover {
  transform: translateY(-8px) rotateX(3deg);
  box-shadow: var(--shadow-lg);
}

.about-platform-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
  font-weight: 900;
  color: var(--emerald);
}

.about-platform-card p {
  margin: 0 0 0.85rem;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1.65;
}

.about-platform-card a {
  font-weight: 900;
  color: var(--emerald);
}

/* —— Teachers —— */
.teachers-section {
  background: linear-gradient(180deg, var(--paper-2), #fff);
}

.teachers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1rem;
  perspective: var(--perspective);
}

.teacher-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 0.85rem;
  border: 1px solid rgba(15, 23, 42, 0.07);
  box-shadow: var(--shadow-md);
  transform-style: preserve-3d;
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease;
  opacity: 0;
  transform: translateY(18px);
}

.teacher-card.in {
  opacity: 1;
  transform: none;
}

.teacher-card:hover {
  transform: translateY(-10px) rotateX(5deg) rotateY(-3deg);
  box-shadow: var(--shadow-lg), 0 0 0 2px rgba(5, 150, 105, 0.1);
}

.teacher-card .photo-wrap {
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 1;
  background: linear-gradient(145deg, var(--paper-2), #e2e8f0);
}

.teacher-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.teacher-card h3 {
  margin: 0.75rem 0 0.25rem;
  font-size: 0.92rem;
  font-weight: 900;
  color: var(--ink-soft);
}

.teacher-card p {
  margin: 0;
  font-size: 0.76rem;
  color: var(--muted);
  font-weight: 700;
  line-height: 1.45;
}

/* —— Nav logo —— */
.nav-brand-mark {
  overflow: hidden;
  padding: 0 !important;
  background: rgba(255, 255, 255, 0.95) !important;
}

.nav-brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 3px;
}

/* —— Mobile hero showcase —— */
@media (max-width: 700px) {
  .hero-showcase {
    min-height: 200px;
    margin-top: var(--nav-h);
  }
  .hero-logo-stage {
    width: min(260px, 72vw);
  }
  .hero-badge-float { display: none; }
  .center-switch { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-logo-stage,
  .hero-orbs span,
  .hero-logo-ring,
  .hero-badge-float { animation: none !important; }
}

.branch-active {
  border-color: rgba(5, 150, 105, 0.35) !important;
  box-shadow: var(--shadow-lg), 0 0 0 2px var(--emerald-glow-soft) !important;
}