/* ============================================================
   Profesor de Informática — Blog / Sitio institucional
   Sistema de diseño — coherente con la identidad real de marca
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-deep: #0a1628;
  --bg-card: #111f36;
  --bg-elevated: #152a45;
  --bg-elevated-2: #1b3454;
  --accent: #00c896;
  --accent-dark: #00a67e;
  --accent-soft: rgba(0, 200, 150, 0.14);
  --accent-2: #3b82f6;
  --accent-2-soft: rgba(59, 130, 246, 0.14);
  --gold: #f0b429;
  --gold-soft: rgba(240, 180, 41, 0.15);
  --text: #e8eef6;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 8px 22px rgba(0, 0, 0, 0.3);
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-heading: "Manrope", "Inter", system-ui, -apple-system, sans-serif;
  --header-h: 148px;
  --wa-green: #25d366;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg-deep);
  background-image:
    radial-gradient(1100px 550px at 90% -10%, rgba(59, 130, 246, 0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(0, 200, 150, 0.10), transparent 60%);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--header-h);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-heading); font-weight: 800; line-height: 1.18; margin: 0; color: #fff; }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section--tight { padding: 56px 0; }
.section--alt { background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent); }

.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-heading); font-weight: 700; font-size: 12.5px;
  letter-spacing: 1.6px; text-transform: uppercase; color: var(--accent);
  background: var(--accent-soft); border: 1px solid rgba(0,200,150,0.3);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.kicker.gold { color: var(--gold); background: var(--gold-soft); border-color: rgba(240,180,41,0.35); }
.kicker.blue { color: var(--accent-2); background: var(--accent-2-soft); border-color: rgba(59,130,246,0.35); }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); margin-bottom: 14px; }
.section-head p { color: var(--text-muted); font-size: 17px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-heading); font-weight: 700; font-size: 15px;
  padding: 14px 26px; border-radius: 999px; border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #06251d; box-shadow: 0 10px 30px rgba(0,200,150,0.28); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(0,200,150,0.4); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-gold { background: var(--gold); color: #2a1c00; box-shadow: 0 10px 30px rgba(240,180,41,0.25); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(240,180,41,0.38); }
.btn-wa { background: var(--wa-green); color: #04220f; box-shadow: 0 10px 30px rgba(37,211,102,0.28); }
.btn-wa:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(37,211,102,0.4); }
.btn-block { width: 100%; }
.btn-sm { padding: 10px 18px; font-size: 13.5px; }

/* ---------- Top status bar ---------- */
.status-bar {
  background: #071120; border-bottom: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-dim);
}
.status-bar__inner {
  max-width: 1180px; margin: 0 auto; padding: 7px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  flex-wrap: wrap;
}
.status-bar__item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.status-bar__item svg { width: 13px; height: 13px; opacity: .8; }
.status-bar__meta { display: flex; gap: 16px; flex-wrap: wrap; }
.status-bar strong { color: var(--text-muted); font-weight: 600; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: rgba(10, 22, 40, 0.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-row1 { max-width: 1180px; margin: 0 auto; padding: 14px 24px 10px; display: flex; align-items: center; gap: 16px; }
.header-brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.header-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header-logo img { width: 52px; height: 52px; border-radius: 12px; object-fit: cover; border: 1px solid var(--border-strong); }
.header-titles { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.header-titles .t1 { font-family: var(--font-heading); font-weight: 800; font-size: 20px; color: #fff; letter-spacing: -0.2px; }
.header-titles .t2 { font-size: 12.5px; color: var(--gold); font-style: italic; }
.header-titles .t3 { font-size: 11.5px; color: var(--text-muted); }
.header-cta { margin-left: auto; display: flex; gap: 10px; flex-shrink: 0; }

.main-nav { border-top: 1px solid var(--border); }
.main-nav__inner { max-width: 1180px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; }
.main-nav ul { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a {
  display: inline-block; padding: 13px 16px; font-weight: 600; font-size: 14.5px;
  color: var(--text-muted); border-bottom: 2px solid transparent; transition: color .15s ease, border-color .15s ease;
}
.main-nav a:hover { color: var(--text); }
.main-nav a.active { color: var(--accent); border-color: var(--accent); }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border-strong); color: var(--text); border-radius: 8px; padding: 8px 10px; }

@media (max-width: 860px) {
  :root { --header-h: 128px; }
  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .main-nav__inner { padding: 8px 24px; }
  .main-nav ul { display: none; flex-direction: column; width: 100%; }
  .main-nav ul.open { display: flex; }
  .main-nav a { border-bottom: none; border-left: 2px solid transparent; padding: 12px 8px; }
  .main-nav a.active { border-color: var(--accent); background: var(--accent-soft); border-radius: 8px; }
  .status-bar__meta { display: none; }
}

/* ---------- Hero ---------- */
.hero { padding: 64px 0 90px; position: relative; overflow: hidden; }
.hero__inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(32px, 4.6vw, 52px); margin: 16px 0 22px; }
.hero p.lead { font-size: 18px; color: var(--text-muted); max-width: 560px; margin-bottom: 30px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__art {
  aspect-ratio: 4/3.1; border-radius: var(--radius-lg); overflow: hidden; position: relative;
  border: 1px solid var(--border-strong); box-shadow: var(--shadow);
}
.hero__art img { width: 100%; height: 100%; object-fit: cover; }
.hero__badge {
  position: absolute; bottom: 18px; left: 18px; right: 18px;
  background: rgba(10,22,40,0.82); backdrop-filter: blur(6px);
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  padding: 14px 16px; display: flex; align-items: center; gap: 12px;
}
.hero__badge .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); flex-shrink: 0; }

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__art { order: -1; }
}

/* ---------- Feature / info cards ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.card__icon {
  width: 50px; height: 50px; border-radius: 13px; display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent); margin-bottom: 18px; flex-shrink: 0;
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 14.5px; }

/* ---------- Stats band ---------- */
.stats-band { background: var(--bg-card); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-band .grid-4 { padding: 40px 0; }
.stat { text-align: center; }
.stat__num { font-family: var(--font-heading); font-weight: 800; font-size: clamp(30px,4vw,42px); color: var(--accent); }
.stat__label { color: var(--text-muted); font-size: 13.5px; margin-top: 6px; }

/* ---------- Course route strip (home) ---------- */
.route-scroll { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .route-scroll { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .route-scroll { grid-template-columns: 1fr 1fr; } }
.route-card {
  border-radius: var(--radius); overflow: hidden; position: relative; aspect-ratio: 1/1.05;
  border: 1px solid var(--border);
}
.route-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.route-card:hover img { transform: scale(1.07); }
.route-card__overlay {
  position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(6,12,22,0.94) 100%);
  display: flex; align-items: flex-end; padding: 14px;
}
.route-card__overlay span { font-family: var(--font-heading); font-weight: 700; font-size: 14px; color: #fff; }

/* ---------- Testimonials ---------- */
.testi-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px; display: flex; flex-direction: column; gap: 16px; }
.testi-card__quote { color: var(--text-muted); font-size: 15px; font-style: italic; }
.testi-card__quote::before { content: "\201C"; color: var(--gold); font-size: 26px; margin-right: 2px; }
.testi-card__person { display: flex; align-items: center; gap: 12px; }
.testi-card__person img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent-soft); }
.testi-card__person strong { font-family: var(--font-heading); font-size: 14.5px; }
.stars { color: var(--gold); font-size: 13px; letter-spacing: 2px; }

/* ---------- CTA band ---------- */
.cta-band {
  border-radius: var(--radius-lg); background: linear-gradient(120deg, #0d2136, #0a1628 60%, #10233c);
  border: 1px solid var(--border-strong); padding: 52px; text-align: center; position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(500px 260px at 20% 0%, rgba(0,200,150,0.16), transparent 60%),
              radial-gradient(500px 260px at 80% 100%, rgba(59,130,246,0.16), transparent 60%);
}
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { font-size: clamp(24px,3vw,34px); margin-bottom: 12px; }
.cta-band p { color: var(--text-muted); max-width: 560px; margin: 0 auto 26px; }
.cta-band__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { background: #060d1a; border-top: 1px solid var(--border); margin-top: 40px; }
.footer-top { padding: 60px 0 40px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 40px; }
@media (max-width: 900px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-top { grid-template-columns: 1fr; } }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand img { width: 40px; height: 40px; border-radius: 10px; }
.footer-brand strong { font-family: var(--font-heading); font-size: 16px; color: #fff; }
.footer-col h4 { font-size: 13.5px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a, .footer-col span { color: var(--text-muted); font-size: 14.5px; }
.footer-col a:hover { color: var(--accent); }
.footer-desc { color: var(--text-muted); font-size: 14.5px; max-width: 320px; }
.social-row { display: flex; gap: 10px; margin-top: 18px; }
.social-row a {
  width: 38px; height: 38px; border-radius: 10px; background: var(--bg-elevated); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; transition: background .15s ease, transform .15s ease;
}
.social-row a:hover { background: var(--accent-soft); color: var(--accent); transform: translateY(-2px); }
.social-row svg { width: 17px; height: 17px; }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 20px 0; display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 10px; color: var(--text-dim); font-size: 13px;
}

/* ---------- WhatsApp floating button ---------- */
.wa-float {
  position: fixed; right: 22px; bottom: 22px; z-index: 300;
  width: 60px; height: 60px; border-radius: 50%; background: var(--wa-green);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 12px 30px rgba(37,211,102,0.45); transition: transform .2s ease;
}
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 30px; height: 30px; fill: #06301a; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { padding: 56px 0 20px; }
.page-hero .kicker { margin-bottom: 14px; }
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; }
.page-hero p { color: var(--text-muted); font-size: 17px; max-width: 680px; }
.breadcrumb { font-size: 13px; color: var(--text-dim); margin-bottom: 14px; }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- Mission/vision ---------- */
.mv-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }
.mv-card .kicker { margin-bottom: 14px; }
.mv-card p { color: var(--text-muted); font-size: 16px; }

.obj-list { display: flex; flex-direction: column; gap: 16px; }
.obj-item { display: flex; gap: 16px; align-items: flex-start; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.obj-item__num { font-family: var(--font-heading); font-weight: 800; color: var(--accent); font-size: 20px; width: 34px; flex-shrink: 0; }
.obj-item p { color: var(--text-muted); font-size: 15px; }

.photo-frame { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-strong); box-shadow: var(--shadow-sm); }
.photo-frame img { width: 100%; }
.photo-caption { color: var(--text-dim); font-size: 13px; margin-top: 10px; text-align: center; }

/* ---------- Cursos page ---------- */
.filter-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.filter-chip {
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--border-strong); background: var(--bg-card);
  font-size: 13.5px; font-weight: 600; color: var(--text-muted); transition: all .15s ease;
}
.filter-chip:hover { color: var(--text); border-color: var(--accent); }
.filter-chip.active { background: var(--accent); color: #06251d; border-color: var(--accent); }

.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 980px) { .course-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .course-grid { grid-template-columns: 1fr; } }

.course-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column; transition: transform .2s ease, border-color .2s ease;
}
.course-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.course-card__img { aspect-ratio: 16/10; overflow: hidden; }
.course-card__img img { width: 100%; height: 100%; object-fit: cover; }
.course-card__body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.course-card__tag { font-size: 11.5px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--gold); }
.course-card__body h3 { font-size: 17.5px; }
.course-card__body p { color: var(--text-muted); font-size: 14px; flex: 1; }
.course-card__actions { display: flex; gap: 10px; margin-top: 6px; flex-wrap: wrap; }

.schedule-table { width: 100%; border-collapse: collapse; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.schedule-table th, .schedule-table td { padding: 16px 20px; text-align: left; font-size: 14.5px; border-bottom: 1px solid var(--border); }
.schedule-table th { background: var(--bg-elevated); font-family: var(--font-heading); color: var(--gold); font-size: 12.5px; text-transform: uppercase; letter-spacing: .8px; }
.schedule-table td { color: var(--text-muted); }
.schedule-table tr:last-child td { border-bottom: none; }
.schedule-note { font-size: 13px; color: var(--text-dim); margin-top: 14px; }

/* Dev showcase (promoción de desarrollos) */
.dev-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 800px) { .dev-grid { grid-template-columns: 1fr; } }
.dev-card {
  background: linear-gradient(160deg, var(--bg-card), var(--bg-elevated));
  border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 30px; position: relative; overflow: hidden;
}
.dev-card__tag { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; padding: 5px 12px; border-radius: 999px; margin-bottom: 16px; }
.dev-card__tag.green { color: var(--accent); background: var(--accent-soft); }
.dev-card__tag.gold { color: var(--gold); background: var(--gold-soft); }
.dev-card__tag.blue { color: var(--accent-2); background: var(--accent-2-soft); }
.dev-card h3 { font-size: 21px; margin-bottom: 10px; }
.dev-card p { color: var(--text-muted); font-size: 14.5px; margin-bottom: 18px; }
.dev-card ul { display: flex; flex-direction: column; gap: 8px; margin-bottom: 22px; }
.dev-card li { font-size: 13.5px; color: var(--text-muted); display: flex; gap: 8px; align-items: flex-start; }
.dev-card li svg { width: 15px; height: 15px; color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.dev-card__actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Forms ---------- */
.form-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-muted); }
.field label .req { color: var(--gold); }
.field input, .field select, .field textarea {
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 12px 14px; color: var(--text); font-family: var(--font); font-size: 14.5px; outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.field textarea { resize: vertical; min-height: 96px; }
.field-check { display: flex; align-items: flex-start; gap: 10px; grid-column: 1 / -1; }
.field-check input { width: 17px; height: 17px; margin-top: 2px; accent-color: var(--accent); flex-shrink: 0; }
.field-check label { font-size: 13.5px; color: var(--text-muted); font-weight: 400; }
.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; }
.form-msg { margin-top: 16px; padding: 13px 16px; border-radius: var(--radius-sm); font-size: 14px; display: none; }
.form-msg.ok { display: block; background: var(--accent-soft); color: var(--accent); border: 1px solid rgba(0,200,150,0.35); }
.form-msg.err { display: block; background: rgba(220,80,80,0.12); color: #ff8a8a; border: 1px solid rgba(220,80,80,0.35); }
.form-submitting { opacity: .7; pointer-events: none; }

/* ---------- Aviso centrado de envío de formulario ---------- */
.result-overlay {
  position: fixed; inset: 0; background: rgba(4,10,20,0.78); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; z-index: 600; padding: 20px;
}
.result-overlay.open { display: flex; }
.result-box {
  background: var(--bg-card); border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  max-width: 420px; width: 100%; padding: 38px 32px; text-align: center; box-shadow: var(--shadow);
  animation: revealUp .3s ease both;
}
.result-box__icon {
  width: 62px; height: 62px; border-radius: 50%; margin: 0 auto 18px;
  display: flex; align-items: center; justify-content: center;
}
.result-box__icon svg { width: 30px; height: 30px; }
.result-box.ok .result-box__icon { background: var(--accent-soft); color: var(--accent); }
.result-box.err .result-box__icon { background: rgba(220,80,80,0.12); color: #ff8a8a; }
.result-box h3 { font-size: 20px; margin-bottom: 10px; }
.result-box p { color: var(--text-muted); font-size: 14.5px; line-height: 1.55; margin-bottom: 24px; }
.result-box .btn { min-width: 150px; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(4,10,20,0.72); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; z-index: 400; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--bg-card); border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  max-width: 720px; width: 100%; max-height: 88vh; overflow-y: auto; padding: 32px; position: relative;
  box-shadow: var(--shadow);
}
.modal-close {
  position: absolute; top: 18px; right: 18px; width: 34px; height: 34px; border-radius: 50%;
  background: var(--bg-elevated); border: 1px solid var(--border-strong); color: var(--text);
  display: flex; align-items: center; justify-content: center; font-size: 18px;
}
.modal-close:hover { color: var(--accent); border-color: var(--accent); }
.modal-box h3 { font-size: 22px; margin-bottom: 6px; }
.modal-box .modal-sub { color: var(--text-muted); font-size: 14px; margin-bottom: 22px; }

/* ---------- Course detail panel ---------- */
.course-detail-panel {
  background: var(--bg-elevated); border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  padding: 30px; margin-top: 30px; display: none;
}
.course-detail-panel.open { display: block; }
.course-detail-panel__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 18px; }
.course-detail-panel h3 { font-size: 22px; }
.course-detail-panel ul { display: flex; flex-direction: column; gap: 10px; margin: 16px 0 22px; }
.course-detail-panel li { display: flex; gap: 10px; font-size: 14.5px; color: var(--text-muted); align-items: flex-start; }
.course-detail-panel li svg { width: 16px; height: 16px; color: var(--accent); flex-shrink: 0; margin-top: 3px; }

/* ---------- Plataforma page ---------- */
.platform-panel {
  background: linear-gradient(150deg, var(--bg-card), var(--bg-elevated));
  border: 1px solid var(--border-strong); border-radius: var(--radius-lg);
  padding: 54px; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: center;
}
@media (max-width: 800px) { .platform-panel { grid-template-columns: 1fr; padding: 32px; } }
.platform-panel h2 { font-size: clamp(24px, 3.4vw, 34px); margin-bottom: 16px; }
.platform-panel p { color: var(--text-muted); font-size: 16px; margin-bottom: 26px; }
.qr-box { background: #fff; border-radius: var(--radius); padding: 16px; text-align: center; justify-self: center; }
.qr-box img { width: 160px; height: 160px; }
.qr-box span { display: block; margin-top: 10px; font-size: 12px; color: #1b1b1b; font-weight: 600; }

/* ---------- Contact page ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; margin-bottom: 20px; }
.contact-info-row { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-bottom: 1px solid var(--border); }
.contact-info-row:last-child { border-bottom: none; }
.contact-info-row .icn { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-info-row .icn svg { width: 19px; height: 19px; }
.contact-info-row strong { display: block; font-size: 14px; margin-bottom: 3px; }
.contact-info-row span, .contact-info-row a { color: var(--text-muted); font-size: 14px; }
.map-frame { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-strong); }
.map-frame iframe { width: 100%; height: 260px; border: 0; display: block; filter: grayscale(0.3) invert(0.92) contrast(0.9); }

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
/* Entrada suave por tiempo (no por scroll): así el contenido siempre
   queda visible aunque JavaScript falle o tarde en cargar. */
@keyframes revealUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { animation: revealUp .7s ease both; }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { animation: none; opacity: 1; transform: none; }
}