/* ============== Design tokens ============== */
:root {
  --bg: #fbfaf6;
  --fg: #1a1f3a;
  --muted: #f3f1ec;
  --muted-fg: #6b7095;
  --border: #e6e3da;
  --card: #ffffff;
  --navy: #1f2a55;
  --navy-deep: #131a3c;
  --gold: #d4a64a;
  --gold-soft: #ecc97a;
  --whatsapp: #25d366;
  --whatsapp-hover: #1da851;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-elegant: 0 20px 50px -20px rgba(31, 42, 85, 0.35);
  --shadow-gold: 0 10px 30px -10px rgba(212, 166, 74, 0.5);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --gradient-hero: linear-gradient(135deg, #1a2247 0%, #2a3470 50%, #3d4a99 100%);
  --gradient-gold: linear-gradient(135deg, #e6bb5c, #c89a3f);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -0.02em; font-weight: 700; line-height: 1.1; color: var(--navy); }
h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.25rem); }
h3 { font-size: 1.5rem; }
p  { color: var(--muted-fg); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.center { text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 1rem;
}
.eyebrow-light { color: var(--gold-soft); }

/* ============== Buttons ============== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, opacity 0.2s ease, box-shadow 0.2s ease;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-pill { border-radius: 999px; }
.btn-lg { padding: 0.95rem 1.8rem; font-size: 1rem; }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-deep); }
.btn-gold { background: var(--gradient-gold); color: var(--navy); box-shadow: var(--shadow-gold); }
.btn-gold:hover { opacity: 0.92; }
.btn-ghost-light { background: rgba(255,255,255,0.06); color: #fff; border-color: rgba(255,255,255,0.3); backdrop-filter: blur(6px); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.14); }
.btn-whatsapp { background: var(--whatsapp); color: #fff; box-shadow: 0 10px 25px -10px rgba(37, 211, 102, 0.5); }
.btn-whatsapp:hover { background: var(--whatsapp-hover); }

/* ============== Nav ============== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(251, 250, 246, 0.75);
  border-bottom: 1px solid rgba(230, 227, 218, 0.6);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand img { height: 44px; width: auto; }
.nav-links { display: none; gap: 2rem; font-size: 0.92rem; font-weight: 500; color: var(--muted-fg); }
.nav-links a:hover { color: var(--navy); }
@media (min-width: 768px) { .nav-links { display: flex; } }

/* ============== Hero ============== */
.hero {
  position: relative;
  padding: 9rem 0 7rem;
  background: var(--gradient-hero);
  background-size: 200% 200%;
  animation: gradient-shift 15s ease infinite;
  color: #fff;
  overflow: hidden;
}
@media (min-width: 768px) { .hero { padding: 11rem 0 8rem; } }
.hero h1 { color: #fff; max-width: 60rem; margin: 0 auto; }
.hero-content { position: relative; text-align: center; z-index: 1; }
.hero-sub { color: rgba(255,255,255,0.78); font-size: 1.15rem; max-width: 38rem; margin: 1.75rem auto 0; }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 2.5rem; }
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; max-width: 50rem; margin: 4rem auto 0; }
@media (min-width: 768px) { .hero-stats { grid-template-columns: repeat(4, 1fr); } }
.stat-card { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius); backdrop-filter: blur(8px); padding: 1.25rem; text-align: center; transition: transform 0.3s ease; }
.stat-card:hover { transform: translateY(-6px) scale(1.03); }
.stat-k { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--gold-soft); }
.stat-v { font-size: 0.82rem; color: rgba(255,255,255,0.7); margin-top: 0.25rem; }

.hero-dots {
  position: absolute; inset: 0; opacity: 0.07; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, white 1px, transparent 0);
  background-size: 32px 32px;
}

.shimmer {
  background: linear-gradient(90deg, var(--gold-soft) 0%, var(--gold) 50%, var(--gold-soft) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 3s linear infinite;
}

/* ============== Blobs ============== */
.blob { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; }
.blob-1 { width: 400px; height: 400px; top: -80px; right: -100px; background: var(--gold); opacity: 0.4; animation: float-slow 12s ease-in-out infinite; }
.blob-2 { width: 500px; height: 500px; bottom: -150px; left: -150px; background: var(--gold); opacity: 0.25; animation: float-slower 18s ease-in-out infinite; }
.blob-3 { width: 350px; height: 350px; top: 20%; right: -100px; background: var(--gold); opacity: 0.15; animation: float-slower 18s ease-in-out infinite; }
.blob-4 { width: 500px; height: 500px; top: -100px; left: -150px; background: var(--gold); opacity: 0.2; animation: float-slow 12s ease-in-out infinite; }
.blob-5 { width: 400px; height: 400px; bottom: -150px; right: -100px; background: var(--gold); opacity: 0.2; animation: float-slow 12s ease-in-out infinite; }

/* ============== About ============== */
.about { padding: 6rem 0; }
.about-grid { display: grid; gap: 3rem; align-items: center; grid-template-columns: 1fr; }
@media (min-width: 768px) { .about-grid { grid-template-columns: 2fr 3fr; gap: 4rem; } }
.about-logo { position: relative; }
.about-logo-glow { position: absolute; inset: -1.5rem; background: var(--gradient-gold); opacity: 0.2; filter: blur(40px); border-radius: var(--radius-lg); }
.about-logo-card { position: relative; background: rgba(255,255,255,0.85); backdrop-filter: blur(4px); border-radius: var(--radius-lg); padding: 2.5rem; border: 1px solid var(--border); box-shadow: var(--shadow-elegant); }
.about-logo-card img { max-width: 260px; margin: 0 auto; }
.about-text p { font-size: 1.1rem; margin-top: 1.5rem; line-height: 1.7; }
.check-list { list-style: none; margin-top: 2rem; display: grid; gap: 0.75rem; }
@media (min-width: 640px) { .check-list { grid-template-columns: 1fr 1fr; } }
.check-list li { display: flex; align-items: center; gap: 0.75rem; font-size: 0.95rem; color: var(--fg); }
.check-list li::before { content: "✓"; display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; background: var(--gold); color: var(--navy); font-weight: 700; font-size: 0.8rem; flex-shrink: 0; }

/* ============== Boards ============== */
.boards { padding: 3.5rem 0; background: var(--navy); color: #fff; }
.boards .eyebrow { display: block; text-align: center; margin-bottom: 2rem; }
.boards-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
.board-chip {
  padding: 0.75rem 1.5rem; border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}
.board-chip:hover { transform: translateY(-4px) scale(1.05); background: rgba(255,255,255,0.1); border-color: rgba(212,166,74,0.5); }

/* ============== Programs ============== */
.programs { padding: 6rem 0; background: #f6f4ee; }
.section-head { max-width: 36rem; margin-bottom: 4rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .lead { font-size: 1.1rem; margin-top: 1.25rem; }
.programs-grid { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .programs-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .programs-grid { grid-template-columns: 1fr 1fr 1fr; } }

.program-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  overflow: hidden;
}
.program-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-elegant); }
.program-card::before { content: ""; position: absolute; top: -80px; right: -80px; width: 180px; height: 180px; border-radius: 50%; background: var(--gradient-gold); opacity: 0; filter: blur(40px); transition: opacity 0.5s; }
.program-card:hover::before { opacity: 0.3; }
.program-head { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 1.25rem; position: relative; }
.program-icon { width: 52px; height: 52px; border-radius: 14px; background: rgba(31,42,85,0.06); color: var(--navy); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; }
.badge { font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.3rem 0.7rem; border-radius: 999px; background: rgba(212,166,74,0.2); color: var(--navy); font-weight: 700; border: 1px solid rgba(212,166,74,0.3); }
.program-grade { font-size: 0.88rem; color: var(--muted-fg); margin-top: 0.25rem; }
.subject-row { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.subject-chip { font-size: 0.75rem; padding: 0.3rem 0.7rem; border-radius: 999px; background: var(--muted); color: var(--fg); }
.pricing { margin-top: 1.75rem; padding-top: 1.5rem; border-top: 1px solid var(--border); display: grid; gap: 0.6rem; }
.pricing-row { display: flex; justify-content: space-between; gap: 0.75rem; font-size: 0.9rem; }
.pricing-row .label { color: var(--muted-fg); }
.pricing-row .price { color: var(--navy); font-weight: 700; white-space: nowrap; }

/* ============== Location ============== */
.location { padding: 6rem 0; position: relative; overflow: hidden; }
.location-grid { display: grid; gap: 4rem; align-items: center; grid-template-columns: 1fr; }
@media (min-width: 768px) { .location-grid { grid-template-columns: 1fr 1fr; } }
.mode-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-top: 2rem; }
.mode-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; text-align: center; font-weight: 600; color: var(--navy); transition: border-color 0.3s; }
.mode-card:hover { border-color: var(--gold); }
.mode-icon { font-size: 1.5rem; margin-bottom: 0.5rem; }
.cities-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.city-card {
  position: relative; background: var(--navy); color: #fff;
  border-radius: var(--radius); padding: 1.4rem 1.25rem; overflow: hidden;
  display: flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-display); font-weight: 600; font-size: 1.1rem;
  transition: color 0.5s;
}
.city-card::before { content: ""; position: absolute; inset: 0; background: var(--gradient-gold); opacity: 0; transition: opacity 0.5s; }
.city-card:hover { color: var(--navy); }
.city-card:hover::before { opacity: 1; }
.city-card span, .city-card .pin { position: relative; z-index: 1; }
.city-card .pin { color: var(--gold); transition: color 0.5s; }
.city-card:hover .pin { color: var(--navy); }

/* ============== Extras ============== */
.extras { padding: 6rem 0; background: var(--navy); color: #fff; position: relative; overflow: hidden; }
.extras .on-dark { color: #fff; }
.extras-grid { display: grid; gap: 1rem; grid-template-columns: 1fr; position: relative; }
@media (min-width: 640px) { .extras-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .extras-grid { grid-template-columns: 1fr 1fr 1fr; } }
.extra-card { display: flex; align-items: center; gap: 1rem; padding: 1.25rem; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.05); transition: background 0.3s, border-color 0.3s; }
.extra-card:hover { background: rgba(255,255,255,0.1); border-color: rgba(212,166,74,0.5); }
.extra-icon { width: 44px; height: 44px; border-radius: 12px; background: rgba(212,166,74,0.2); color: var(--gold); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; flex-shrink: 0; }

/* ============== Register ============== */
.register { padding: 6rem 0; background: #f6f4ee; position: relative; overflow: hidden; }
.register-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2.5rem; box-shadow: var(--shadow-elegant); max-width: 64rem; margin: 0 auto; }
@media (min-width: 768px) { .register-card { padding: 3rem; } }
.form-grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .form-grid { grid-template-columns: 1fr 1fr; } }
.span-2 { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field > span { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted-fg); font-weight: 700; }
.field input, .field textarea {
  font-family: inherit; font-size: 0.95rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff; color: var(--fg);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%; resize: vertical;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(212,166,74,0.2); }
.form-actions { display: flex; flex-direction: column; align-items: center; gap: 1rem; margin-top: 0.5rem; }
@media (min-width: 640px) { .form-actions { flex-direction: row; } }
.phone-note { font-size: 0.9rem; color: var(--muted-fg); }
.phone-note a { color: var(--navy); font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }

/* ============== Footer ============== */
.footer { padding: 2.5rem 0; background: var(--navy-deep); color: rgba(255,255,255,0.6); text-align: center; font-size: 0.85rem; }

/* ============== Animations ============== */
@keyframes float-slow {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(20px, -30px) rotate(5deg); }
}
@keyframes float-slower {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-25px, 20px) scale(1.05); }
}
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1); }
.reveal.in { opacity: 1; transform: none; }