/* =========================================================
   Colegio Alianza - Estilos principales
   Paleta: Azul marino + pastel + acento dorado
   Mobile First
   ========================================================= */

:root {
  --navy: #0f2a4f;
  --navy-dark: #0a1d38;
  --navy-light: #1c3d72;
  --gold: #d4a84b;
  --pastel-blue: #e8f0fb;
  --pastel-pink: #fde8ee;
  --pastel-yellow: #fff5d6;
  --pastel-green: #e6f4ea;
  --bg: #fbfbfd;
  --surface: #ffffff;
  --text: #1d2535;
  --text-muted: #5b6478;
  --border: #e6e9f0;
  --whatsapp: #25d366;
  --shadow-sm: 0 2px 8px rgba(15, 42, 79, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 42, 79, 0.10);
  --shadow-lg: 0 20px 48px rgba(15, 42, 79, 0.16);
  --radius: 14px;
  --radius-lg: 22px;
  --transition: 0.35s cubic-bezier(.2,.7,.2,1);
  --container: 1200px;
  --header-h: 90px;
  --topbar-h: 38px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  color: var(--navy);
  line-height: 1.2;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section { padding: 4.5rem 0; position: relative; }
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-align: center;
  margin-bottom: 0.75rem;
}
.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 3rem;
  font-size: 1.05rem;
}
.section-eyebrow {
  display: block;
  text-align: center;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin-bottom: 0.6rem;
}

/* =================== TOPBAR =================== */
.topbar {
  background: var(--navy-dark);
  color: #cfd6e5;
  font-size: 0.82rem;
  padding: 0.55rem 0;
}
.topbar .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  align-items: center;
}
.topbar a { color: #cfd6e5; }
.topbar a:hover { color: var(--gold); }
.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.topbar-item svg { width: 14px; height: 14px; flex: 0 0 14px; }

/* =================== HEADER / NAV =================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.brand img { width: 202px; height: 80px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--navy);
}
.brand-tag {
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 4px;
  max-width: 180px;
  white-space: normal;
  line-height: 1.3;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.nav-link {
  position: relative;
  padding: 0.6rem 0.95rem;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text);
  border-radius: 8px;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0.95rem; right: 0.95rem; bottom: 0.35rem;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}
.nav-link:hover { color: var(--navy); }
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  margin-left: 0.5rem;
  background: var(--navy);
  color: #fff;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.nav-cta:hover {
  background: var(--navy-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  border-radius: 10px;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  display: block;
  width: 22px; height: 2px;
  background: var(--navy);
  position: relative;
  transition: transform var(--transition), top var(--transition), opacity var(--transition);
}
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after  { position: absolute; top:  7px; }
.nav-toggle.is-open span { background: transparent; }
.nav-toggle.is-open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.is-open span::after  { top: 0; transform: rotate(-45deg); }

/* =================== BOTONES =================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.02em;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition), color var(--transition);
}
.btn-primary {
  background: var(--gold);
  color: var(--navy-dark);
  box-shadow: 0 12px 28px rgba(212,168,75,0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(212,168,75,0.45); }
.btn-outline {
  border: 2px solid #fff;
  color: #fff;
}
.btn-outline:hover { background: #fff; color: var(--navy); }
.btn-ghost {
  background: var(--navy);
  color: #fff;
}
.btn-ghost:hover { background: var(--navy-light); transform: translateY(-2px); }

/* =================== HERO =================== */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h) - var(--topbar-h));
  min-height: 620px;
  overflow: hidden;
  isolation: isolate;
  color: #fff;
  display: flex;
  align-items: center;
}
.hero-slides {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.08);
  transition: opacity 1.4s ease, transform 7s ease;
}
.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}
.hero::before {
  content: '';
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(120deg, rgba(10,29,56,0.85) 0%, rgba(15,42,79,0.65) 50%, rgba(15,42,79,0.45) 100%);
}
.hero-content {
  max-width: 760px;
  padding: 5rem 0 4rem;
}
.hero-eyebrow {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.72rem;
  margin-bottom: 1.4rem;
  backdrop-filter: blur(6px);
}
.hero h1 {
    font-size: clamp(1rem, 2.8vw, 3.2rem);
    white-space: nowrap;
    color: #fff;
    margin-bottom: 1.2rem;
    letter-spacing: -0.01em;
  }
.hero h1 .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  animation: charIn 0.5s forwards;
}
.hero h1 .char.space { width: 0.3em; }
@keyframes charIn {
  to { opacity: 1; transform: translateY(0); }
}
.hero p.lead {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: rgba(255,255,255,0.92);
  margin-bottom: 2rem;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}
.hero-dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 2;
}
.hero-dot {
  width: 32px; height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.4);
  transition: background var(--transition), width var(--transition);
}
.hero-dot.active { background: var(--gold); width: 48px; }

.hero-mini {
  min-height: 360px;
}
.hero-mini h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); }

/* =================== TARJETAS / GRIDS =================== */
.grid {
  display: grid;
  gap: 1.5rem;
}
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-5 { grid-template-columns: 1fr; }
@media (min-width: 700px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(5, 1fr); }
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.6rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.card .icon {
  width: 56px; height: 56px;
  border-radius: 16px;
  display: grid; place-items: center;
  background: var(--pastel-blue);
  color: var(--navy);
  margin-bottom: 1rem;
  transition: transform var(--transition);
}
.card:hover .icon { transform: rotate(-6deg) scale(1.05); }
.card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.card p { color: var(--text-muted); font-size: 0.95rem; }

.card.pastel-pink .icon { background: var(--pastel-pink); }
.card.pastel-yellow .icon { background: var(--pastel-yellow); }
.card.pastel-green .icon { background: var(--pastel-green); }
.card.pastel-blue .icon { background: var(--pastel-blue); }

/* ¿Quiénes somos? */
.about {
  background: var(--surface);
}
.about-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1.05fr 1fr; }
}
.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.8s ease;
}
.about-image:hover img { transform: scale(1.04); }
.about-badge {
  position: absolute;
  bottom: -1px; left: -1px;
  background: var(--gold);
  color: var(--navy-dark);
  padding: 1rem 1.4rem;
  border-radius: 0 var(--radius-lg) 0 var(--radius-lg);
  font-weight: 700;
}
.about-badge strong { display: block; font-size: 1.8rem; line-height: 1; }
.about-content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 1rem;
}
.about-content p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.6rem;
}
.about-stat {
  text-align: center;
  padding: 1rem 0.5rem;
  background: var(--pastel-blue);
  border-radius: var(--radius);
}
.about-stat strong {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: 1.7rem;
  color: var(--navy);
}
.about-stat span { font-size: 0.8rem; color: var(--text-muted); }

/* MVP (Misión-Visión-Propósito) */
.mvp {
  background: linear-gradient(180deg, var(--pastel-blue) 0%, var(--bg) 100%);
}
.mvp-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--gold);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.mvp-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.mvp-card .num {
  font-family: 'Playfair Display', serif;
  position: absolute;
  top: 0.5rem; right: 1rem;
  font-size: 5rem;
  color: rgba(15,42,79,0.06);
  font-weight: 700;
}
.mvp-card .icon {
  width: 60px; height: 60px;
  border-radius: 16px;
  background: var(--navy);
  color: var(--gold);
  display: grid; place-items: center;
  margin-bottom: 1rem;
}
.mvp-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
  letter-spacing: 0.04em;
}
.mvp-card p { color: var(--text-muted); font-size: 0.96rem; }

/* =================== FORMULARIO =================== */
.contact {
  background: var(--navy);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(212,168,75,0.25), transparent 70%);
  border-radius: 50%;
}
.contact .section-title { color: #fff; }
.contact .section-subtitle { color: rgba(255,255,255,0.75); }
.contact .section-eyebrow { color: var(--gold); }
.contact-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1fr 1.2fr; }
}
.contact-info-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 2rem;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(6px);
}
.contact-info-card h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}
.contact-info-card p { color: rgba(255,255,255,0.85); margin-bottom: 1.4rem; }
.contact-list { display: flex; flex-direction: column; gap: 1rem; }
.contact-list-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}
.contact-list-item .icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: rgba(212,168,75,0.18);
  color: var(--gold);
  display: grid; place-items: center;
  flex: 0 0 42px;
}
.contact-list-item strong { display: block; color: #fff; margin-bottom: 2px; }
.contact-list-item span { color: rgba(255,255,255,0.78); font-size: 0.92rem; }

.form {
  background: #fff;
  color: var(--text);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.form-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 600px) {
  .form-row.cols-2 { grid-template-columns: 1fr 1fr; }
}
.field { margin-bottom: 1rem; position: relative; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.field input,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border);
  padding: 0.85rem 1rem;
  border-radius: 12px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--navy);
  box-shadow: 0 0 0 4px rgba(15,42,79,0.08);
}
.field textarea { min-height: 130px; resize: vertical; }
.field.error input,
.field.error textarea { border-color: #d4434b; background: #fff5f5; }
.field-error {
  display: none;
  color: #d4434b;
  font-size: 0.8rem;
  margin-top: 0.3rem;
}
.field.error .field-error { display: block; }
.form .btn-primary { width: 100%; margin-top: 0.5rem; }
.form-success {
  display: none;
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  background: var(--pastel-green);
  border: 1px solid #b7d9bf;
  color: #1f5c34;
  border-radius: 12px;
  text-align: center;
}
.form-success.show { display: block; animation: fadeUp 0.5s ease; }

/* =================== FOOTER =================== */
.map-wrap iframe {
  width: 100%;
  height: 360px;
  border: 0;
  display: block;
  filter: grayscale(0.15);
}
.site-footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.78);
  padding: 3.5rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}
.footer-grid h4 {
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-brand { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 1rem; }
.footer-brand img { width: 48px; height: 48px; }
.footer-brand .brand-name { color: #fff; }
.footer-grid p, .footer-grid li { font-size: 0.92rem; line-height: 1.7; }
.footer-grid a:hover { color: var(--gold); }
.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
}
.footer-bottom a { color: rgba(255,255,255,0.7); }

/* =================== WHATSAPP FLOTANTE =================== */
.wa-float {
  position: fixed;
  right: 1.2rem; bottom: 1.2rem;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #fff;
  display: grid; place-items: center;
  z-index: 90;
  box-shadow: 0 10px 24px rgba(37,211,102,0.45);
  animation: pulseWa 2s infinite;
  transition: transform var(--transition);
}
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 32px; height: 32px; }
@keyframes pulseWa {
  0%   { box-shadow: 0 10px 24px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0.5); }
  70%  { box-shadow: 0 10px 24px rgba(37,211,102,0.45), 0 0 0 18px rgba(37,211,102,0); }
  100% { box-shadow: 0 10px 24px rgba(37,211,102,0.45), 0 0 0 0 rgba(37,211,102,0); }
}

/* =================== ANIMACIONES SCROLL =================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal.fade-left { transform: translateX(-30px); }
.reveal.fade-right { transform: translateX(30px); }
.reveal.fade-left.in,
.reveal.fade-right.in { transform: translateX(0); }
.reveal.zoom { transform: scale(0.94); }
.reveal.zoom.in { transform: scale(1); }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =================== OFERTA EDUCATIVA =================== */
.split {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
  align-items: center;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split.reverse > :first-child { order: 2; }
}
.split-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.8s ease;
}
.split-image:hover img { transform: scale(1.05); }
.split-content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 1rem;
}
.split-content p { color: var(--text-muted); margin-bottom: 1rem; }
.check-list { margin-top: 1.2rem; display: flex; flex-direction: column; gap: 0.7rem; }
.check-list li {
  display: flex; gap: 0.7rem; align-items: flex-start;
  color: var(--text);
}
.check-list li::before {
  content: '✓';
  flex: 0 0 26px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--pastel-blue);
  color: var(--navy);
  font-weight: 700;
  display: grid; place-items: center;
  font-size: 0.85rem;
}

.alt-bg { background: var(--surface); }
.tinted-bg {
  background:
    radial-gradient(circle at 0% 0%, var(--pastel-pink) 0%, transparent 40%),
    radial-gradient(circle at 100% 100%, var(--pastel-blue) 0%, transparent 40%),
    var(--bg);
}

/* Timeline */
.timeline {
  position: relative;
  padding: 1rem 0;
  margin-top: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 18px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), transparent);
}
@media (min-width: 800px) {
  .timeline::before { left: 50%; transform: translateX(-50%); }
}
.timeline-item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 2rem;
}
.timeline-item .dot {
  position: absolute;
  left: 8px; top: 4px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--gold);
  border: 4px solid #fff;
  box-shadow: 0 0 0 2px var(--gold);
}
.timeline-item .card-tl {
  background: #fff;
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.timeline-item h4 { color: var(--navy); margin-bottom: 0.3rem; font-size: 1.1rem; }
.timeline-item p { color: var(--text-muted); font-size: 0.93rem; }
@media (min-width: 800px) {
  .timeline-item { width: 50%; padding-left: 0; padding-right: 50px; }
  .timeline-item .dot { left: auto; right: -11px; }
  .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: 50px;
    padding-right: 0;
  }
  .timeline-item:nth-child(even) .dot { left: -11px; right: auto; }
}

/* Galería */
.gallery {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 600px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s ease;
}
.gallery-item::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(15,42,79,0.7) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}
.gallery-item .caption {
  position: absolute;
  left: 1rem; bottom: 1rem;
  color: #fff;
  font-weight: 600;
  z-index: 2;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
}
.gallery-item:hover img { transform: scale(1.08); }
.gallery-item:hover::after { opacity: 1; }
.gallery-item:hover .caption { opacity: 1; transform: translateY(0); }

/* =================== RESPONSIVE NAV =================== */
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.25rem 1.5rem;
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-110%);
    transition: transform var(--transition);
    gap: 0.2rem;
  }
  .nav-menu.is-open { transform: translateY(0); }
  .nav-link { padding: 0.85rem 1rem; border-radius: 10px; }
  .nav-link::after { display: none; }
  .nav-link:hover { background: var(--pastel-blue); }
  .nav-cta { margin: 0.6rem 0 0; text-align: center; }
}

/* Pequeños detalles responsivos */
@media (max-width: 500px) {
  .topbar { font-size: 0.74rem; }
  .topbar .container { justify-content: center; text-align: center; }
  .hero-content { padding: 3rem 0; }
  .section { padding: 3.5rem 0; }
  .form { padding: 1.4rem; }
  .wa-float { width: 54px; height: 54px; }
  .wa-float svg { width: 28px; height: 28px; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}