/* ============================================================
   SABER 11° - Landing Page Styles (Optimized)
   ============================================================ */

@import 'variables.css';
@import 'base.css';
@import 'components.css';

/* ── Landing-specific overrides (extends base.css) ───────── */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,700;0,9..144,900;1,9..144,300&family=DM+Sans:wght@400;500;600&display=swap');

body {
  overflow-x: hidden;
  line-height: 1.5;
  font-family: 'DM Sans', var(--font-body), -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Header / Navbar ─────────────────────────────────────── */
.header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(66,75,95,0.1);
  box-shadow: 0 2px 8px rgba(0,37,69,0.06);
}
.header-inner {
  height: 68px;
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-logo-wrap {
  display: flex;
  align-items: center;
}
.brand-logo-wrap img {
  height: 40px;
  width: auto;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-item {
  padding: 10px 20px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--on-surface-variant);
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}
.nav-item:hover {
  color: var(--primary);
  background: rgba(0,37,69,0.06);
}
.nav-item.cta {
  background: var(--primary);
  color: #fff;
  border-radius: 100px;
  padding: 10px 24px;
  box-shadow: 0 2px 8px rgba(0,37,69,0.2);
}
.nav-item.cta:hover {
  background: var(--primary-container);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,37,69,0.3);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
  border: none;
  background: rgba(0,37,69,0.06);
  border-radius: var(--r-sm);
  transition: background 0.2s;
}
.hamburger:hover { background: rgba(0,37,69,0.1); }
.hamburger span {
  display: block;
  height: 2.5px;
  border-radius: 2px;
  background: var(--primary);
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  border-bottom: 1px solid rgba(66,75,95,0.1);
  box-shadow: 0 8px 24px rgba(0,37,69,0.1);
  z-index: 99;
  padding: 12px 20px 20px;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-item {
  display: block;
  padding: 14px 16px;
  border-radius: var(--r-sm);
}
.mobile-menu .nav-item:hover { background: rgba(0,37,69,0.06); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: auto;
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  background: linear-gradient(160deg, var(--primary) 0%, #0d3a5c 50%, var(--primary-container) 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(253,183,71,0.12) 0%, transparent 50%),
    radial-gradient(ellipse 40% 50% at 20% 80%, rgba(0,74,122,0.3) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--surface) 0%, transparent 100%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
  position: relative;
  z-index: 1;
}
.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}
.hero-titulo {
  font-family: 'Fraunces', var(--font-display), serif;
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  color: #ffffff;
  position: relative;
  z-index: 1;
  animation: fadeDown .7s .1s ease both;
}
.hero-titulo span {
  display: block;
  color: var(--secondary-container);
  font-style: italic;
  font-weight: 400;
}
.hero-sub {
  max-width: 100%;
  margin: 24px 0 0;
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
  line-height: 1.75;
  position: relative;
  z-index: 1;
  animation: fadeDown .7s .2s ease both;
}
.hero-cta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: flex-start;
  position: relative;
  z-index: 1;
  animation: fadeDown .7s .35s ease both;
}
.btn-primary {
  background: #ffffff;
  color: var(--primary);
  padding: 16px 32px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 700;
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}
.btn-pwa {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(253,183,71,0.2);
  color: var(--secondary-container);
  font-size: .9rem;
  font-weight: 700;
  padding: 14px 24px;
  border-radius: 100px;
  border: 2px solid var(--secondary-container);
  text-decoration: none;
  transition: all .25s;
  backdrop-filter: blur(8px);
}
.btn-pwa:hover {
  background: rgba(253,183,71,0.35);
  transform: translateY(-2px);
}
.hero-note {
  margin-top: 12px;
  font-size: .8rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
  position: relative;
  z-index: 1;
}
.chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-start;
  margin-top: 28px;
  position: relative;
  z-index: 1;
  animation: fadeDown .7s .28s ease both;
}
.chip {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.95);
  font-size: .8rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 100px;
  backdrop-filter: blur(8px);
  transition: all .2s;
}
.chip:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-2px);
}
.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  animation: fadeIn 1s .4s ease both;
}
.hero-image img {
  max-width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: contain;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.35));
  border-radius: 16px;
}
.hero-image::before {
  content: '';
  position: absolute;
  inset: -30px;
  background: radial-gradient(circle, rgba(253,183,71,0.15) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
}

/* ── Sections ─────────────────────────────────────────────── */
.section { padding: 48px 24px 72px; background: var(--surface); }
.section-inner { max-width: 1100px; margin: 0 auto; }
.section-label {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 12px;
}
.section-titulo {
  font-family: 'Fraunces', var(--font-display), serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--primary);
  max-width: 560px;
}
.section-titulo em {
  font-style: italic;
  font-weight: 300;
  color: var(--secondary);
}

/* ── Feature Cards (reuses .card base) ────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 56px;
}
.feat-card {
  background: var(--surface-container-lowest);
  border: 1px solid rgba(0,37,69,0.06);
  border-radius: var(--r);
  padding: 28px 24px;
  box-shadow: 0 2px 8px rgba(0,37,69,0.04);
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.feat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,37,69,0.1);
  border-color: var(--primary);
}
.feat-icon { font-size: 2rem; margin-bottom: 14px; line-height: 1; }
.feat-titulo {
  font-family: 'Fraunces', var(--font-display), serif;
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--primary);
}
.feat-desc {
  font-size: .9rem;
  color: var(--on-surface-variant);
  line-height: 1.6;
}

/* ── Subject Cards ────────────────────────────────────────── */
.materias-section {
  background: var(--surface-container-low);
  border-top: 1px solid var(--outline-variant);
  border-bottom: 1px solid var(--outline-variant);
  padding: 96px 24px;
}
.materias-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 52px;
}
.materia-card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--r);
  padding: 28px 20px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,37,69,0.04);
  transition: all .2s, transform .2s;
}
.materia-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,37,69,0.1);
}
.materia-emoji { font-size: 2.4rem; }
.materia-nombre {
  font-family: 'Fraunces', var(--font-display), serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin: 12px 0 6px;
}
.materia-desc { font-size: .8rem; color: var(--on-surface-variant); line-height: 1.5; }

/* ── PWA Section ──────────────────────────────────────────── */
.pwa-section {
  padding: 96px 24px;
  background: var(--surface-container-lowest);
}
.pwa-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.pwa-lista {
  list-style: none;
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.pwa-lista li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: .95rem;
  color: var(--on-surface-variant);
  line-height: 1.55;
}
.pwa-lista .check {
  flex-shrink: 0;
  width: 22px; height: 22px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: .7rem;
  margin-top: 2px;
}
.pwa-visual {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  border-radius: 24px;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 24px 80px rgba(0,37,69,0.25);
}
.pwa-stat {
  background: rgba(255,255,255,.12);
  border-radius: 12px;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.pwa-stat-icon { font-size: 1.8rem; }
.pwa-stat-num {
  font-family: 'Fraunces', var(--font-display), serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--secondary-container);
  line-height: 1;
}
.pwa-stat-label { font-size: .8rem; color: rgba(255,255,255,.7); }

/* ── CTA Final ───────────────────────────────────────────── */
.cta-final {
  background: var(--primary);
  padding: 96px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-titulo {
  font-family: 'Fraunces', var(--font-display), serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 900;
  color: #ffffff;
  line-height: 1.05;
  position: relative;
}
.cta-titulo span { display: block; font-style: italic; font-weight: 300; opacity: .85; }
.cta-sub {
  margin: 20px auto 44px;
  max-width: 500px;
  color: rgba(255,255,255,.8);
  font-size: 1.05rem;
  line-height: 1.6;
  position: relative;
}
.btn-blanco {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  color: var(--primary);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 18px 44px;
  border-radius: 100px;
  text-decoration: none;
  transition: transform .2s, box-shadow .2s;
  position: relative;
}
.btn-blanco:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,.25); }
.btn-arrow { display: inline-block; transition: transform .2s; }
.btn-blanco:hover .btn-arrow { transform: translateX(4px); }

/* ── Footer ───────────────────────────────────────────────── */
footer {
  background: var(--primary);
  padding: 40px 24px;
  text-align: center;
}
footer p { color: rgba(255,255,255,0.7); font-size: .82rem; line-height: 1.7; }
footer a { color: rgba(255,255,255,0.9); text-decoration: none; font-weight: 500; }
footer a:hover { color: #ffffff; }

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateX(40px);}
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Scroll Reveal ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 0 24px;
    gap: 40px;
  }
  .hero-content {
    align-items: center;
    text-align: center;
  }
  .hero-cta { justify-content: center; }
  .chips-row { justify-content: center; }
  .hero-image { display: none; }
  .pwa-inner { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .header-nav { display: none; }
  .hamburger { display: flex; }
  .header-inner { position: relative; }
}