/* ============================================
   HOME PAGE — Estilos específicos
   ============================================ */

/* ── HERO ── */
.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3rem, 8vw, 5rem);
  background: linear-gradient(160deg, #f0f7ff 0%, #ffffff 60%);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-eyebrow {
  font-size: .875rem;
  font-weight: var(--weight-semi);
  color: var(--color-primary);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-title {
  margin-bottom: 1.25rem;
  color: var(--color-text);
}
.hero-title em {
  font-style: normal;
  color: var(--color-primary);
  font-family: var(--font-serif);
}

.hero-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
}
.stat { display: flex; flex-direction: column; }
.stat-num {
  font-size: 1.75rem;
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: 1;
}
.stat-label {
  font-size: .8125rem;
  color: var(--color-text-muted);
  margin-top: .25rem;
}

/* ── TARJETA DE PREVIEW ── */
.level-preview-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  max-width: 380px;
  margin-left: auto;
}

.lpc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.lpc-level {
  background: var(--color-primary-lt);
  color: var(--color-primary);
  font-size: .8125rem;
  font-weight: var(--weight-bold);
  letter-spacing: .06em;
  padding: .3rem .75rem;
  border-radius: var(--radius-full);
}
.lpc-tag {
  font-size: .8rem;
  color: var(--color-text-muted);
  background: var(--color-bg-alt);
  padding: .25rem .6rem;
  border-radius: var(--radius-full);
}

.lpc-lesson {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  border-left: 3px solid var(--color-primary);
}
.lpc-english {
  font-size: 1.125rem;
  font-weight: var(--weight-semi);
  color: var(--color-text);
  margin-bottom: .35rem;
}
.lpc-spanish {
  font-size: .9rem;
  color: var(--color-text-muted);
}

.lpc-progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: .6rem;
}
.lpc-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width .6s ease;
}
.lpc-progress-text {
  font-size: .8125rem;
  color: var(--color-text-muted);
}

/* ── SECCIÓN NIVELES ── */
.levels-section {
  padding: clamp(3rem, 8vw, 5rem) 0;
  background: var(--color-bg);
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
}

.level-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.level-card.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lt), var(--shadow-md);
}

.level-card.active::before {
  content: 'DISPONIBLE';
  position: absolute;
  top: .75rem;
  right: .75rem;
  font-size: .65rem;
  font-weight: var(--weight-bold);
  letter-spacing: .08em;
  color: var(--color-primary);
  background: var(--color-primary-lt);
  padding: .15rem .5rem;
  border-radius: var(--radius-full);
}

.level-card:hover:not(.locked) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.level-card.locked {
  opacity: .6;
  filter: grayscale(.3);
}

.lc-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  font-weight: var(--weight-bold);
  font-size: .9375rem;
  letter-spacing: .04em;
}

[data-level="a1"] .lc-badge { background: #dbeafe; color: #1d4ed8; }
[data-level="a2"] .lc-badge { background: #e0f2fe; color: #0369a1; }
[data-level="b1"] .lc-badge { background: #d1fae5; color: #065f46; }
[data-level="b2"] .lc-badge { background: #fef3c7; color: #92400e; }
[data-level="c1"] .lc-badge { background: #ede9fe; color: #5b21b6; }

.lc-title {
  font-size: 1rem;
  font-weight: var(--weight-semi);
}

.lc-desc {
  font-size: .85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  flex: 1;
}

.lc-progress {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.lc-bar {
  flex: 1;
  height: 5px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.lc-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}
.lc-pct {
  font-size: .75rem;
  font-weight: var(--weight-semi);
  color: var(--color-text-muted);
  min-width: 2.5rem;
  text-align: right;
}

.lc-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .6rem 1rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: .875rem;
  font-weight: var(--weight-semi);
  transition: all var(--transition);
  text-decoration: none;
}
.lc-cta:hover {
  background: var(--color-primary-dk);
  transform: translateY(-1px);
}
.locked-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .6rem 1rem;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  border-radius: var(--radius-md);
  font-size: .8125rem;
  cursor: not-allowed;
  border: 1px solid var(--color-border);
}

/* ── SECCIÓN MÉTODO ── */
.method-section {
  padding: clamp(3rem, 8vw, 5rem) 0;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.method-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.method-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.method-icon {
  font-size: 1.75rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  line-height: 1;
}

.method-card h3 {
  margin-bottom: .75rem;
  font-size: 1.1rem;
}

.method-card p {
  font-size: .9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.method-source {
  font-size: .75rem;
  color: var(--color-text-light);
  font-style: italic;
  border-top: 1px solid var(--color-border);
  padding-top: .75rem;
  display: block;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .hero-visual { display: flex; justify-content: center; }
  .level-preview-card { max-width: 100%; }
}

@media (max-width: 600px) {
  .hero-stats { gap: 1.5rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { text-align: center; justify-content: center; }
  .levels-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .levels-grid { grid-template-columns: 1fr; }
}