/**
 * 禪閱 ZenRead — Home Page CSS
 */

/* ─── Layout ─── */
.home-main {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  padding-top: 120px;
  padding-bottom: var(--space-4xl);
}

/* ─── Hero Section ─── */
.hero-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  margin-bottom: 96px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

@media (min-width: 640px) {
  .hero-section {
    flex-direction: row;
    align-items: center;
  }
}

.hero-cover {
  width: 100%;
  flex-shrink: 0;
}

@media (min-width: 640px) {
  .hero-cover { width: 280px; }
}

.hero-cover-inner {
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, #EFEBE5 0%, #E4DFD9 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

.hero-cover-deco {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 70%, rgba(123,140,124,0.15) 0%, transparent 70%);
}

.hero-cover-title {
  font-size: 28px;
  letter-spacing: 0.25em;
  color: var(--color-text);
  opacity: 0.75;
  position: relative;
  z-index: 1;
  line-height: 1.8;
}

.hero-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
}

.hero-eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  font-weight: 500;
}

.hero-title {
  font-size: 36px;
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.hero-author {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
}

.hero-desc {
  font-size: 15px;
  color: rgba(44,43,41,0.75);
  line-height: 1.8;
  max-width: 480px;
  font-weight: 300;
}

.dark .hero-desc { color: rgba(232,228,223,0.65); }

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-top: var(--space-sm);
}

.hero-cta .material-symbols-outlined {
  transition: transform var(--transition-fast);
}
.hero-cta:hover .material-symbols-outlined {
  transform: translateX(4px);
}

/* ─── Library Section ─── */
.library-section {}

.library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
}

.library-title {
  font-size: 24px;
  color: var(--color-text);
  font-weight: 500;
}

.library-controls {
  display: flex;
  gap: var(--space-sm);
}

.libctrl-btn {
  padding: 6px 14px;
  font-size: 13px;
}

/* ─── Book Grid ─── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--space-2xl);
}

@media (min-width: 480px) {
  .book-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .book-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ─── Book Card ─── */
.book-card {
  cursor: pointer;
}

.book-cover-wrap {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(145deg, var(--cover-bg, #F4F0EA), var(--cover-bg2, #EAE4DC));
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-md);
  position: relative;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.book-card:hover .book-cover-wrap {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.book-cover-art {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.book-cover-text {
  font-size: 20px;
  letter-spacing: 0.22em;
  color: var(--color-text);
  opacity: 0.7;
  line-height: 1.8;
}

.book-reading-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: var(--progress, 0%);
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 0;
}

/* Discover card */
.book-cover-wrap--empty {
  background: transparent;
  border: 2px dashed var(--color-border);
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color var(--transition-normal), background-color var(--transition-normal);
}

.book-card--discover:hover .book-cover-wrap--empty {
  border-color: var(--color-primary);
  background-color: var(--color-primary-ultra);
  transform: translateY(-4px);
}

.discover-text {
  font-size: 13px;
  color: var(--color-text-muted);
}

.book-meta {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0 4px;
}

.book-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 2px;
  transition: color var(--transition-fast);
}

.book-card:hover .book-title {
  color: var(--color-primary);
}

.book-author {
  font-size: 13px;
  color: var(--color-text-muted);
}