/**
 * @file horizontal.css
 * Horizontal Storytelling: 6 conceptos con pin de ScrollTrigger
 * SDD: docs/06-interactions.md, docs/02-requirements.md
 */

.horizontal {
  position: relative;
  background-color: var(--color-bg-deep);
  overflow: hidden;
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background-color var(--transition-base);
}

.horizontal__pin-wrap {
  width: 100%;
  height: 100vh;
  height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.horizontal__header {
  margin-bottom: var(--space-xl);
}

.horizontal__track {
  display: flex;
  gap: var(--space-2xl);
  padding: 0 var(--container-padding);
  width: max-content;
  will-change: transform;
}

.horizontal__card {
  width: 380px;
  min-height: 420px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base), background-color var(--transition-base);
  flex-shrink: 0;
}

.horizontal__card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.horizontal__card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.horizontal__card-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  padding: 0.25rem 0.6rem;
  background: rgba(0, 102, 255, 0.08);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
}

.horizontal__card-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 102, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-blue);
}

.horizontal__card-icon svg {
  width: 22px;
  height: 22px;
}

.horizontal__card-concept {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-sm);
  line-height: 1.1;
  text-transform: uppercase;
}

.horizontal__card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.horizontal__card-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-subtle);
}

.horizontal__card-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* =========================================
   PROGRESS BAR
   ========================================= */
.horizontal__progress-bar {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--container-padding);
  right: var(--container-padding);
  height: 2px;
  background: var(--color-border-subtle);
  border-radius: var(--radius-full);
}

.horizontal__progress-fill {
  height: 100%;
  width: 0%;
  background: var(--gradient-tech);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.8);
  transition: width 100ms linear;
}

/* =========================================
   RESPONSIVE DESIGN (HORIZONTAL)
   ========================================= */
@media (max-width: 768px) {
  .horizontal__pin-wrap {
    height: auto !important;
    padding: var(--space-3xl) 0;
  }

  .horizontal__track {
    flex-direction: column !important;
    width: 100% !important;
    padding: 0 var(--container-padding) !important;
    gap: var(--space-lg) !important;
    transform: none !important;
    box-sizing: border-box !important;
  }

  .horizontal__card {
    width: 100% !important;
    min-height: auto;
    box-sizing: border-box;
  }

  .horizontal__progress-bar {
    display: none !important;
  }
}