:root {
  --blue: #003d8f;
  --blue-dark: #00285e;
  --blue-soft: #e8f0fb;
  --accent: #1e88e5;
  --text: #1f2a37;
  --muted: #5b6776;
  --bg: #ffffff;
  --bg-alt: #f5f8fc;
  --line: #dde5ef;
  --radius: 14px;
  --max: 1140px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Open Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); }
a:hover { color: var(--accent); }
h1, h2, h3, h4 { font-family: "Overpass", "Open Sans", sans-serif; color: var(--blue-dark); line-height: 1.25; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
.lead { font-size: 1.15rem; color: var(--muted); }
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 820px; }
.center { text-align: center; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; min-height: 76px; gap: 20px; }
.logo img { height: 52px; width: auto; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 26px; height: 3px; margin: 5px 0; background: var(--blue); border-radius: 2px; }
.main-nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; align-items: center; }
.main-nav a { display: block; padding: 8px 12px; text-decoration: none; font-weight: 600; font-size: .95rem; color: var(--text); border-radius: 8px; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--blue); background: var(--blue-soft); }
.main-nav .nav-cta a { background: var(--blue); color: #fff; }
.main-nav .nav-cta a:hover { background: var(--blue-dark); color: #fff; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 10px 20px rgba(0,0,0,.06); }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; padding: 10px 20px 20px; }
  .main-nav a { padding: 12px; }
}

/* Buttons */
.btn { display: inline-block; padding: 13px 26px; border-radius: 999px; background: var(--blue); color: #fff; text-decoration: none; font-weight: 700; letter-spacing: .02em; transition: background .2s; border: 2px solid var(--blue); }
.btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: #fff; }
.btn-outline { background: transparent; color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: #fff; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.2em; }

/* Hero */
.hero { position: relative; min-height: 78vh; display: flex; align-items: center; background: #f4f6f8 url("../img/hero.jpg") center right / cover no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.95) 0%, rgba(255,255,255,.85) 40%, rgba(255,255,255,0) 70%); }
.hero .container { position: relative; }
.hero-text { max-width: 560px; }
.hero h1 { color: var(--blue); }
.hero p { font-size: 1.25rem; color: var(--text); }
@media (max-width: 760px) {
  .hero { min-height: 0; padding: 60px 0; background-position: 75% center; }
  .hero::before { background: rgba(255,255,255,.88); }
}

/* Page banner */
.page-banner { background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%); color: #fff; padding: 64px 0 56px; }
.page-banner h1 { color: #fff; margin-bottom: .3em; }
.page-banner p { color: rgba(255,255,255,.88); font-size: 1.15rem; max-width: 760px; margin: 0; }
.page-banner .btn-outline { color: #fff; border-color: #fff; }
.page-banner .btn-outline:hover { background: #fff; color: var(--blue); }
.breadcrumb { font-size: .9rem; margin-bottom: 12px; }
.breadcrumb a { color: rgba(255,255,255,.8); }

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media img { border-radius: var(--radius); box-shadow: 0 14px 34px rgba(0,40,94,.14); }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split.reverse .split-media { order: 0; }
}

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.card-img { aspect-ratio: 16 / 9; object-fit: cover; width: 100%; }
.card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.card-body p { color: var(--muted); }
.card-body .btn { margin-top: auto; align-self: flex-start; }
.meta { font-size: .85rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: .4em; }

.check-list { list-style: none; padding: 0; margin: 0 0 1em; display: grid; gap: 10px; }
.check-list li { padding-left: 32px; position: relative; }
.check-list li::before { content: ""; position: absolute; left: 0; top: .35em; width: 20px; height: 20px; border-radius: 50%; background: var(--blue-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3 3 7-7' fill='none' stroke='%23003d8f' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat; }
.two-col-list { columns: 2; column-gap: 40px; }
.two-col-list li { break-inside: avoid; margin-bottom: 10px; }
@media (max-width: 640px) { .two-col-list { columns: 1; } }

.callout { background: var(--blue); color: #fff; border-radius: var(--radius); padding: 48px; text-align: center; }
.callout h2 { color: #fff; }
.callout p { color: rgba(255,255,255,.9); }
.callout .btn { background: #fff; color: var(--blue); border-color: #fff; }
.callout .btn:hover { background: var(--blue-soft); }
@media (max-width: 640px) { .callout { padding: 32px 22px; } }

.quote { font-family: "Overpass", sans-serif; font-size: 1.35rem; line-height: 1.5; color: var(--blue-dark); border-left: 4px solid var(--blue); padding-left: 24px; margin: 0; }

/* Video (privacy-friendly click-to-load) */
.video { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; background: #000; cursor: pointer; box-shadow: 0 14px 34px rgba(0,40,94,.14); }
.video img { width: 100%; height: 100%; object-fit: cover; opacity: .85; transition: opacity .2s; }
.video:hover img { opacity: 1; }
.video button { position: absolute; inset: 0; margin: auto; width: 76px; height: 76px; border-radius: 50%; border: 0; background: rgba(0,61,143,.92); cursor: pointer; }
.video button::after { content: ""; position: absolute; left: 31px; top: 24px; border-style: solid; border-width: 14px 0 14px 22px; border-color: transparent transparent transparent #fff; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-caption { margin-top: 10px; font-weight: 600; color: var(--blue-dark); }

/* Logos */
.logos { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 40px; }
.logos img { max-height: 70px; width: auto; filter: grayscale(30%); }

/* Centers */
.center-card { text-align: center; padding: 32px 24px; }
.center-card img { max-height: 90px; width: auto; margin: 0 auto 18px; }
.center-card .btn { align-self: center; }
.center-card .city { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }

/* Course details */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 0 0 2em; }
.fact { background: var(--bg-alt); border-radius: 10px; padding: 18px 20px; }
.fact strong { display: block; font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.module { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; background: #fff; }
.module summary { cursor: pointer; padding: 18px 22px; font-weight: 700; color: var(--blue-dark); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.module summary::-webkit-details-marker { display: none; }
.module summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--blue); }
.module[open] summary::after { content: "–"; }
.module .module-body { padding: 0 22px 18px; }
.module h4 { margin: 1em 0 .4em; font-size: 1rem; }
.module ul { margin: 0; padding-left: 20px; }
.notice { background: #fff8e1; border: 1px solid #f3dc8f; border-radius: 10px; padding: 16px 20px; margin-bottom: 2em; }

.refs { padding-left: 20px; }
.refs li { margin-bottom: 14px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.contact-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 24px; text-align: center; text-decoration: none; color: var(--text); transition: transform .2s, box-shadow .2s; }
.contact-item:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(0,40,94,.12); color: var(--text); }
.contact-item .icon { width: 56px; height: 56px; border-radius: 50%; background: var(--blue-soft); margin: 0 auto 16px; display: grid; place-items: center; }
.contact-item .icon svg { width: 26px; height: 26px; fill: var(--blue); }
.contact-item strong { display: block; color: var(--blue-dark); font-size: 1.1rem; margin-bottom: 4px; }

/* Legal */
.legal h2 { font-size: 1.35rem; margin-top: 1.8em; }

/* Footer */
.site-footer { background: var(--blue-dark); color: rgba(255,255,255,.82); padding: 56px 0 28px; font-size: .95rem; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer-grid h4 { color: #fff; font-size: 1rem; margin-bottom: 1em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-logo { background: #fff; display: inline-block; padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; }
.footer-logo img { height: 44px; width: auto; }
.social { display: flex; gap: 12px; margin-top: 12px; }
.social a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,.12); display: grid; place-items: center; }
.social a:hover { background: rgba(255,255,255,.25); }
.social svg { width: 18px; height: 18px; fill: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.15); margin-top: 40px; padding-top: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .85rem; }
.footer-bottom nav { display: flex; gap: 18px; flex-wrap: wrap; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }

/* WhatsApp floating button */
.wa-float { position: fixed; right: 20px; bottom: 20px; z-index: 60; width: 58px; height: 58px; border-radius: 50%; background: #25d366; display: grid; place-items: center; box-shadow: 0 8px 20px rgba(0,0,0,.2); }
.wa-float svg { width: 30px; height: 30px; fill: #fff; }