/**
 * Cards Component - Base Styles
 * Shared card styling with variants for series and featured content
 *
 * @package LearningByHart
 * @since 1.0.0
 */

/* ========================================
   Base Card Styles
   ======================================== */

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-elevated);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-slow);
  border: 1px solid var(--color-border-light);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(44, 40, 36, 0.12), 0 8px 16px rgba(44, 40, 36, 0.08);
  border-color: var(--color-accent);
}

/* ========================================
   Card Header
   ======================================== */

.card__header {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(0.5rem, 2.5vw, 1.5rem); /* Fluid gap: 8px min, max 24px (smaller than before) */
  padding: clamp(var(--space-md), 2.5vw, var(--space-lg));
  align-items: center;
  border-bottom: 1px solid var(--color-border-light);
}

/* Card Image */
.card__image {
  width: clamp(120px, 20vw, 180px);
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-alt);
  flex-shrink: 0;
  padding-right: clamp(0.5rem, 2vw, 1rem); /* Fluid padding to match border scaling */
  border-right: clamp(2px, 0.5vw, 4px) solid var(--color-border-light); /* Fluid border width */
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Card titles use default H4 styling from typography.css */

/* ========================================
   Card Body
   ======================================== */

.card__body {
  padding: clamp(var(--space-md), 2.5vw, var(--space-lg)) 0;
  text-align: center;
}

/* ========================================
   Card Footer
   ======================================== */

.card__footer {
  padding: var(--space-sm) clamp(var(--space-md), 2.5vw, var(--space-lg)) clamp(var(--space-md), 2.5vw, var(--space-lg));
  border-top: 1px solid var(--color-border-light);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

/* ========================================
   Card Variant: Series (.card--series)
   ======================================== */

.card--series {
  /* Series cards have left border accent */
}

.card--series::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: clamp(3px, 0.6vw, 5px); /* Scale down on narrow viewports */
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0.9;
  transition: opacity var(--transition-base), width var(--transition-base);
  z-index: 1;
}

.card--series:hover::before {
  opacity: 1;
  width: clamp(4px, 0.75vw, 6px); /* Scale hover width proportionally */
}

/* ========================================
   Card Variant: Featured (.card--featured)
   ======================================== */

.card--featured {
  /* Featured cards have top border accent and are taller/more square */
  min-height: 400px;
}

.card--featured::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0.9;
  transition: opacity var(--transition-base);
  z-index: 1;
}

.card--featured:hover::before {
  opacity: 1;
  height: 5px;
}

/* Featured card - 50% image, 50% content, no wrapping */
.card--featured .card__header {
  grid-template-columns: 1fr 1fr; /* 50% image, 50% title */
}

.card--featured .card__image {
  width: 100%; /* Fill 50% column */
  padding-right: clamp(0.75rem, 3vw, 1.5rem); /* Fluid padding to match border scaling */
  border-right: clamp(2px, 0.5vw, 4px) solid var(--color-border-light); /* Fluid border width */
}