/* ============================================================
   Podcast Library — Dark-mode design system
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d28;
  --bg-card: rgba(30, 34, 48, 0.85);
  --bg-card-hover: rgba(40, 46, 64, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-input: rgba(255, 255, 255, 0.06);

  --text-primary: #e4e6ed;
  --text-secondary: #8b90a0;
  --text-muted: #5c6070;

  --accent: #6c8aff;
  --accent-hover: #8ba4ff;
  --accent-soft: rgba(108, 138, 255, 0.12);
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;

  --border: rgba(255, 255, 255, 0.06);
  --border-focus: rgba(108, 138, 255, 0.4);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .35);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, .45);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: .2s cubic-bezier(.4, 0, .2, 1);
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* ---------- Global select / option (dark mode) ---------- */
select,
select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b90a0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right .6rem center;
  padding-right: 2rem;
}

select:focus {
  border-color: var(--border-focus);
  outline: none;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-wrapper {
  min-height: calc(100vh - 60px);
  padding-top: 80px;
  padding-bottom: 3rem;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 60px;
  background: rgba(15, 17, 23, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.navbar-brand span {
  font-size: 1.3rem;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.navbar-links a {
  color: var(--text-secondary);
  font-size: .85rem;
  font-weight: 500;
  transition: color var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--text-primary);
}

.nav-search {
  position: relative;
}

.nav-search input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: .4rem 1rem .4rem 2.2rem;
  color: var(--text-primary);
  font-size: .82rem;
  width: 200px;
  transition: all var(--transition);
  outline: none;
}

.nav-search input:focus {
  border-color: var(--border-focus);
  width: 260px;
  background: var(--bg-secondary);
}

.nav-search::before {
  content: '🔍';
  position: absolute;
  left: .7rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: .75rem;
  pointer-events: none;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
}

.user-name {
  font-size: .82rem;
  color: var(--text-secondary);
}

.btn-logout {
  font-size: .75rem;
  font-weight: 600;
  padding: .3rem .8rem;
  border-radius: var(--radius-full);
  color: var(--danger);
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, .2);
  transition: all var(--transition);
  text-decoration: none;
}

.btn-logout:hover {
  background: rgba(248, 113, 113, 0.2);
  color: #fca5a5;
}

/* ---------- Flash Messages ---------- */
.flash-container {
  margin-bottom: 1.5rem;
}

.flash {
  padding: .8rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: .85rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  animation: slideDown .3s ease;
}

.flash-success {
  background: rgba(52, 211, 153, 0.1);
  color: var(--success);
  border: 1px solid rgba(52, 211, 153, .2);
}

.flash-error {
  background: rgba(248, 113, 113, 0.1);
  color: var(--danger);
  border: 1px solid rgba(248, 113, 113, .2);
}

.flash-info {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(108, 138, 255, .2);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Section Headers ---------- */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-header h2 {
  font-size: 1.15rem;
  font-weight: 600;
}

.section-header .view-all {
  font-size: .8rem;
  color: var(--text-secondary);
}

/* ---------- Cards (General) ---------- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: all var(--transition);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

/* ---------- Category Cards ---------- */
.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.2rem;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  align-items: center;
}

.category-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--text-primary);
}

.category-card .cat-icon {
  font-size: 1.6rem;
  margin-right: 1rem;
  display: flex;
  align-items: center;
}

.category-card .cat-name {
  font-weight: 600;
  font-size: .95rem;
  margin-bottom: .25rem;
}

.category-card .cat-count {
  font-size: .78rem;
  color: var(--text-secondary);
}

/* ---------- Item Cards ---------- */
.item-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.item-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: all var(--transition);
}

.item-card:hover {
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
}

.item-header {
  display: flex;
  align-items: center;
  gap: .65rem;
  flex: 1;
  min-width: 0;
}

.item-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.item-icon.rss {
  background: rgba(251, 146, 60, .12);
  color: #fb923c;
}

.item-icon.audio {
  background: rgba(168, 85, 247, .12);
  color: #a855f7;
}

.item-icon.book {
  background: rgba(34, 211, 238, .12);
  color: #22d3ee;
}

.item-icon.other {
  background: var(--bg-glass);
  color: var(--text-secondary);
}

.item-meta {
  flex: 1;
  min-width: 0;
}

.item-name {
  font-weight: 600;
  font-size: .88rem;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-detail {
  font-size: .75rem;
  color: var(--text-secondary);
  margin-top: .15rem;
}

.badge {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: .15rem .5rem;
  border-radius: var(--radius-full);
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---------- Item Action Bar ---------- */
.item-actions {
  display: flex;
  align-items: center;
  gap: .35rem;
  flex-shrink: 0;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .3rem;
  padding: .35rem .65rem;
  border-radius: var(--radius-sm);
  font-size: .75rem;
  font-weight: 500;
  cursor: pointer;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
  text-decoration: none;
  position: relative;
  line-height: 1;
}

.action-btn:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--border-focus);
}

.action-btn .icon {
  font-size: .85rem;
}

.action-btn.primary {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: rgba(108, 138, 255, .2);
}

.action-btn.primary:hover {
  background: var(--accent);
  color: #fff;
}

/* Copy-success tooltip */
.action-btn .tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--success);
  color: #000;
  font-size: .7rem;
  font-weight: 600;
  padding: .2rem .5rem;
  border-radius: var(--radius-sm);
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s;
  white-space: nowrap;
}

.action-btn .tooltip.show {
  opacity: 1;
}

/* ---------- Filter Bar ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: .85rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.filter-bar select,
.filter-bar input[type="text"] {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .4rem .6rem;
  color: var(--text-primary);
  font-size: .8rem;
  outline: none;
  transition: border-color var(--transition);
}

.filter-bar select:focus,
.filter-bar input:focus {
  border-color: var(--border-focus);
}

.filter-bar label {
  font-size: .78rem;
  color: var(--text-secondary);
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: .4rem;
  margin-top: 2rem;
}

.pagination a,
.pagination span {
  padding: .45rem .8rem;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.pagination a:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--border-focus);
}

.pagination .active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.pagination .disabled {
  opacity: .4;
  pointer-events: none;
}

/* ---------- Stats Cards ---------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem;
  text-align: center;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: .75rem;
  color: var(--text-secondary);
  margin-top: .35rem;
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, .6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all .25s;
}

.modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  width: 90%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
  transform: translateY(12px);
  transition: transform .25s;
}

.modal-overlay.visible .modal-content {
  transform: translateY(0);
}

.modal-content h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.modal-content .close-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  padding: .25rem;
}

.modal-content .close-btn:hover {
  color: var(--text-primary);
}

.modal-content label {
  display: block;
  font-size: .78rem;
  color: var(--text-secondary);
  margin-bottom: .3rem;
  margin-top: .85rem;
}

.modal-content select,
.modal-content input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .55rem .7rem;
  color: var(--text-primary);
  font-size: .85rem;
  outline: none;
  transition: border-color var(--transition);
}

.modal-content select:focus,
.modal-content input:focus {
  border-color: var(--border-focus);
}

.modal-content .btn-generate {
  display: block;
  width: 100%;
  margin-top: 1.25rem;
  padding: .65rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}

.modal-content .btn-generate:hover {
  background: var(--accent-hover);
}

.modal-content .btn-generate:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.share-result {
  margin-top: 1rem;
  padding: .85rem;
  border-radius: var(--radius-sm);
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, .2);
}

.share-result .url-row {
  display: flex;
  gap: .4rem;
  margin-top: .4rem;
}

.share-result input {
  flex: 1;
  background: var(--bg-primary);
  font-family: monospace;
  font-size: .78rem;
}

.share-result .copy-btn {
  flex-shrink: 0;
  background: var(--success);
  color: #000;
  border: none;
  padding: .45rem .7rem;
  border-radius: var(--radius-sm);
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition);
}

.share-result .copy-btn:hover {
  opacity: .85;
}

.hidden {
  display: none !important;
}

/* ---------- Series Section ---------- */
.series-list {
  margin-bottom: 2rem;
}

.series-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: .75rem;
  overflow: hidden;
}

.series-header {
  padding: 1rem 1.15rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: .65rem;
  transition: background var(--transition);
}

.series-header:hover {
  background: var(--bg-card-hover);
}

.series-header .arrow {
  transition: transform var(--transition);
  color: var(--text-secondary);
}

.series-header.open .arrow {
  transform: rotate(90deg);
}

.series-name {
  font-weight: 600;
  font-size: .9rem;
}

.series-count {
  font-size: .75rem;
  color: var(--text-secondary);
  margin-left: auto;
}

.series-body {
  padding: 0 1.15rem 1rem;
}

/* ---------- Empty State ---------- */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 2.5rem;
  margin-bottom: .75rem;
}

.empty-state p {
  font-size: .9rem;
}

/* ---------- Auth Pages ---------- */
.auth-card {
  max-width: 400px;
  margin: 2rem auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.auth-card h1 {
  font-size: 1.3rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-card .form-group {
  margin-bottom: 1rem;
}

.auth-card label {
  display: block;
  font-size: .8rem;
  color: var(--text-secondary);
  margin-bottom: .3rem;
}

.auth-card input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .6rem .75rem;
  color: var(--text-primary);
  font-size: .88rem;
  outline: none;
}

.auth-card input:focus {
  border-color: var(--border-focus);
}

.auth-card button {
  width: 100%;
  padding: .65rem;
  margin-top: .5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: .75rem;
  color: var(--text-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .item-grid {
    grid-template-columns: 1fr;
  }

  .category-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .navbar-links {
    gap: .75rem;
  }

  .nav-search input {
    width: 140px;
  }

  .nav-search input:focus {
    width: 180px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .navbar-links {
    display: none;
  }

  .container {
    padding: 0 1rem;
  }
}