/* ============ Preview Panel (slide-in from right) ============ */
.preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(20, 60, 75, 0.18);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.32s ease;
}

.preview-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.preview-panel {
  position: fixed;
  right: 16px;
  top: 16px;
  bottom: 16px;
  width: 540px;
  max-width: calc(100vw - 32px);
  z-index: 101;
  border-radius: var(--r-2xl);
  background: linear-gradient(180deg, rgba(255,255,255,0.94) 0%, rgba(255,255,255,0.86) 100%);
  backdrop-filter: blur(28px) saturate(1.3);
  -webkit-backdrop-filter: blur(28px) saturate(1.3);
  border: 1px solid rgba(255,255,255,0.85);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -1px 0 rgba(180,210,220,0.35),
    var(--shadow-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateX(calc(100% + 24px));
  transition: transform 0.42s cubic-bezier(0.2, 0.85, 0.25, 1);
}

.preview-panel.open { transform: translateX(0); }

.preview-panel:not(.open) { pointer-events: none; }

.preview-hero {
  position: relative;
  height: 220px;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: calc(var(--r-2xl) - 2px) calc(var(--r-2xl) - 2px) 0 0;
  margin: 4px 4px 0;
  border-radius: calc(var(--r-2xl) - 4px);
}

.preview-hero-bg {
  position: absolute;
  inset: 0;
}

.preview-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,0.25), transparent 50%),
    linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.5) 100%);
}

.preview-hero-glyph {
  position: absolute;
  right: -30px;
  bottom: -50px;
  font-size: 320px;
  color: rgba(255,255,255,0.14);
  line-height: 1;
  font-weight: 200;
}

.preview-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(255,255,255,0.6);
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--ink-2);
  font-size: 18px;
  z-index: 2;
  box-shadow: 0 4px 14px rgba(20,60,75,0.18);
  transition: all 0.18s ease;
}

.preview-close:hover { background: white; transform: rotate(90deg); }

.preview-hero-text {
  position: absolute;
  left: 24px;
  bottom: 20px;
  right: 24px;
  color: white;
}

.preview-hero-genre {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.85);
  margin-bottom: 8px;
}

.preview-hero-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

.preview-hero-sub {
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  margin-top: 4px;
}

.preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.preview-summary {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  letter-spacing: -0.005em;
}

.preview-section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-4);
  margin-bottom: 10px;
}

.preview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.preview-stat {
  padding: 14px 14px;
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(255,255,255,0.85) 0%, rgba(236,247,250,0.6) 100%);
  border: 1px solid rgba(168, 216, 227, 0.4);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.preview-stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-4);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.preview-stat-value {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink-1);
  letter-spacing: -0.02em;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

.preview-stat-suffix {
  font-size: 12px;
  color: var(--ink-3);
  font-weight: 500;
  margin-left: 2px;
}

/* Resources list */
.preview-resources {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.preview-resource {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(168, 216, 227, 0.3);
  cursor: pointer;
  transition: all 0.18s ease;
}

.preview-resource:hover {
  background: rgba(255,255,255,0.85);
  border-color: var(--cyan-300);
  transform: translateX(2px);
}

.preview-resource-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-resource-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--cyan-50), var(--cyan-100));
  border: 1px solid rgba(111, 190, 208, 0.4);
  display: grid;
  place-items: center;
  color: var(--cyan-600);
  font-size: 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}

.preview-resource-text {
  display: flex;
  flex-direction: column;
}

.preview-resource-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-1);
}

.preview-resource-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-4);
  margin-top: 2px;
}

.preview-resource-arrow {
  color: var(--ink-4);
  font-size: 14px;
}

/* Tags */
.preview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preview-tag {
  padding: 5px 10px;
  border-radius: 100px;
  background: rgba(168, 216, 227, 0.22);
  border: 1px solid rgba(168, 216, 227, 0.4);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--cyan-600);
  letter-spacing: -0.005em;
}

/* Open button */
.preview-cta {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.preview-btn {
  flex: 1;
  height: 44px;
  border-radius: 100px;
  border: 1px solid rgba(58, 158, 181, 0.35);
  background: linear-gradient(180deg, white 0%, var(--cyan-50) 100%);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan-600);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  letter-spacing: -0.005em;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -1px 0 rgba(58,158,181,0.15),
    0 4px 12px rgba(58,158,181,0.18);
  transition: all 0.18s ease;
  position: relative;
  overflow: hidden;
}

.preview-btn::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: var(--neon);
  box-shadow: 0 0 calc(8px * var(--neon-intensity)) var(--neon-glow);
  opacity: var(--neon-intensity);
}

.preview-btn:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -1px 0 rgba(58,158,181,0.15),
    0 6px 18px rgba(58,158,181,0.28);
}

.preview-btn-secondary {
  flex: 0 0 44px;
  background: rgba(255,255,255,0.7);
  color: var(--ink-2);
  border-color: rgba(168, 216, 227, 0.4);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.9), 0 1px 3px rgba(20,60,75,0.04);
}

.preview-btn-secondary::after { display: none; }