:root {
  --navy-dark: #0d2438;
  --navy-header: #0f2b42;
  --card-navy: #1c3a56;
  --bg-black: #141414;
  --mint: #cfe8d6;
  --text-light: #f5f5f5;
  --text-muted: #d9d9d9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg-black);
  color: var(--text-light);
}

a { color: inherit; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top bar */
.topbar {
  background: var(--navy-header);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.topbar-contact {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 14px;
}

.topbar-contact a { text-decoration: none; }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.social-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.social-bar img { width: 18px; height: 18px; display: block; }

.login-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 14px;
  cursor: pointer;
}

/* Nav header */
.navheader {
  background: var(--navy-header);
}

.navheader-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
  text-decoration: none;
}

.brand img {
  width: 78px;
  height: 54px;
  object-fit: contain;
  border-radius: 4px;
}

.brand-title { font-size: 22px; font-weight: 400; }
.brand-subtitle { font-style: italic; font-size: 14px; color: var(--text-muted); }

.mainnav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 15px;
}

.mainnav a { text-decoration: none; }

.mainnav .dropdown {
  position: relative;
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  background: var(--navy-header);
  border: 1px solid rgba(255,255,255,0.15);
  min-width: 180px;
  z-index: 20;
}

.dropdown:hover .dropdown-menu,
.dropdown.open .dropdown-menu { display: block; }

.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  text-decoration: none;
  font-size: 14px;
}

.dropdown-menu a:hover { background: rgba(255,255,255,0.08); }

/* Oferta section */
.section { padding: 64px 24px; }
.section-black { background: var(--bg-black); }
.section-navy { background: var(--navy-dark); }

.section-title {
  text-align: center;
  font-family: "Questrial", Arial, sans-serif;
  font-weight: 400;
  color: var(--mint);
  font-size: 40px;
  margin: 0 0 24px;
}

.section-intro {
  max-width: 780px;
  margin: 0 auto 48px;
  text-align: center;
  line-height: 1.7;
  font-size: 15px;
}

.section-intro a { text-decoration: underline; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.cards-grid.top { margin-bottom: 24px; }

.card {
  background: var(--card-navy);
  padding: 36px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card svg { width: 56px; height: 56px; margin-bottom: 20px; }

.card h3 {
  font-family: "Questrial", Arial, sans-serif;
  font-weight: 400;
  font-size: 22px;
  margin: 0 0 20px;
}

.card ul {
  list-style: disc;
  text-align: left;
  padding-left: 20px;
  margin: 0 0 28px;
  font-size: 14px;
  line-height: 2;
}

.card p {
  font-size: 14px;
  margin: 0 0 28px;
}

.btn-outline {
  border: 1px solid var(--mint);
  color: var(--text-light);
  background: transparent;
  padding: 12px 20px;
  text-decoration: none;
  font-size: 14px;
  margin-top: auto;
  cursor: pointer;
}

.btn-outline:hover { background: rgba(207,232,214,0.1); }

/* About section */
.about-heading {
  text-align: center;
  font-family: "Questrial", Arial, sans-serif;
  font-weight: 400;
  color: var(--mint);
  font-size: 32px;
  margin: 0 0 8px;
}

.about-subheading {
  text-align: center;
  color: var(--mint);
  font-size: 18px;
  margin: 0 0 32px;
}

.about-text {
  max-width: 820px;
  margin: 0 auto 20px;
  text-align: center;
  line-height: 1.8;
  font-size: 15px;
}

.about-quote {
  text-align: center;
  font-style: italic;
  margin-top: 36px;
  font-size: 15px;
}

/* Contact section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-map iframe {
  width: 100%;
  height: 420px;
  border: 0;
}

.contact-title {
  font-family: "Questrial", Arial, sans-serif;
  font-weight: 400;
  color: var(--mint);
  font-size: 32px;
  margin: 0 0 20px;
}

.contact-info p { margin: 4px 0; font-size: 15px; }
.contact-info .desc { margin-bottom: 20px; line-height: 1.7; }

.contact-social {
  display: flex;
  gap: 16px;
  margin: 20px 0 28px;
  list-style: none;
  padding: 0;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.contact-form input,
.contact-form textarea {
  background: transparent;
  border: 1px solid var(--text-muted);
  color: var(--text-light);
  padding: 14px;
  font-size: 14px;
  font-family: inherit;
}

.contact-form textarea { min-height: 110px; resize: vertical; }

.contact-form button {
  background: var(--text-light);
  color: #111;
  border: none;
  padding: 14px 28px;
  font-size: 15px;
  align-self: flex-start;
  cursor: pointer;
}

.form-success {
  display: none;
  color: var(--mint);
  font-size: 14px;
}

/* Footer */
.footer {
  background: var(--navy-header);
  padding: 32px 24px;
  text-align: center;
  font-size: 13px;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 16px;
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.footer-row {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  color: var(--text-muted);
}

.footer-copyright {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 16px;
  color: var(--text-muted);
}

/* Chat bubble */
.chat-bubble {
  position: fixed;
  bottom: 24px;
  left: 24px;
  background: #2196c9;
  color: #fff;
  border: none;
  border-radius: 24px;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  cursor: pointer;
  z-index: 30;
}

/* Legal page */
.legal-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  line-height: 1.8;
  font-size: 15px;
}

.legal-content h1 {
  color: var(--mint);
  font-family: "Questrial", Arial, sans-serif;
  font-weight: 400;
}

.legal-content h2 {
  color: var(--mint);
  font-size: 18px;
  margin-top: 32px;
}

.legal-updated { color: var(--text-muted); font-size: 13px; margin-bottom: 24px; }

/* Acceso alumnos */
.class-links {
  max-width: 700px;
  margin: 0 auto;
}

.class-links h3 { color: var(--mint); font-weight: 400; margin-top: 32px; }
.class-links a { display: inline-block; margin: 8px 0; text-decoration: underline; }

/* Mobile */
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .cards-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .mainnav { display: none; flex-direction: column; align-items: flex-start; width: 100%; }
  .mainnav.open { display: flex; }
  .navheader-inner { position: relative; }
  .nav-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 26px;
    cursor: pointer;
  }
  .topbar-contact { font-size: 12px; gap: 14px; }
}