:root {
  color-scheme: light;
  --bg: #eef2f8;
  --grid-line: #e2e8f2;
  --surface: #ffffff;
  --surface-alt: #f3f6fb;
  --ink: #1b2430;
  --ink-soft: #64748b;
  --accent: #3d8bff;
  --accent-soft: #dbe9ff;
  --online: #22c55e;
  --border: #dbe2ec;
  --shadow: rgba(27, 36, 48, 0.08);
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  --sans: "Zen Maru Gothic", "Hiragino Sans", "Yu Gothic UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    var(--bg);
  background-size: 28px 28px, 28px 28px, auto;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
}

/* ===== ヘッダー：ビデオ通話アプリのウィンドウ風 ===== */

.site-header {
  padding: 20px 16px 8px;
}

.call-window {
  max-width: 720px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 12px 30px var(--shadow);
  overflow: hidden;
}

.call-window-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  padding: 10px 14px;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

.call-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
}

.call-dot:nth-child(1) { background: #7ecbf0; }
.call-dot:nth-child(2) { background: #7ecbf0; }
.call-dot:nth-child(3) { background: #7ecbf0; }

.call-room-id {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: #4fb8e8;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-left: 4px;
  white-space: nowrap;
}

.call-satellite-row {
  padding: 6px 14px 8px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-soft);
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
}

.online-pill {
  margin-left: auto;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: #16803c;
  background: #e7f9ec;
  border: 1px solid #b9ecc4;
  border-radius: 999px;
  padding: 4px 10px;
}

.online-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--online);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
  50% { opacity: 0.6; box-shadow: 0 0 0 4px rgba(34, 197, 94, 0); }
}

.call-window-body {
  padding: 22px 20px 24px;
  text-align: center;
}

.site-header h1 {
  margin: 0 0 8px;
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.site-subtitle {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 16px 48px;
}

.controls {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px var(--shadow);
}

.search-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  font-family: inherit;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--ink);
  margin-bottom: 16px;
}

.search-input::placeholder {
  color: #9aa7b8;
}

.search-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.filter-group {
  margin-bottom: 16px;
}

.filter-heading {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0 0 10px;
  font-weight: 600;
}

.unit-filter-row,
.status-filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== 出演者フィルタ：参加者タイル風（3列グリッド） ===== */

.cast-filter-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

@media (min-width: 480px) {
  .cast-filter-row {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 640px) {
  .cast-filter-row {
    grid-template-columns: repeat(5, 1fr);
  }
}

.cast-filter-btn {
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  width: 100%;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 4px 8px 4px 4px;
  font-size: 0.7rem;
  font-weight: 600;
  min-height: 44px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
}

.cast-filter-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cast-filter-avatar {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-block;
  background: var(--badge-color, #ccc);
  border: 2px solid color-mix(in srgb, var(--badge-color, #ccc) 55%, white);
  position: relative;
}

/* 未選択＝Discordの「取り込み中」風：グレーの丸に「−」マーク */
.cast-filter-avatar::after {
  content: "−";
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  font-weight: 900;
  line-height: 1;
  color: #fff;
  background: #6b7280;
  border: 2px solid var(--surface);
}

/* 選択＝「接続中」状態：緑のオンラインドットが点滅 */
.cast-filter-btn.is-active .cast-filter-avatar::after {
  content: "";
  background: var(--online);
  animation: pulse-dot 1.8s ease-in-out infinite;
}

.cast-filter-btn.is-active {
  border-color: var(--badge-color, var(--accent));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--badge-color, var(--accent)) 25%, transparent);
  background: color-mix(in srgb, var(--badge-color, var(--accent)) 10%, white);
}

.cast-filter-btn.is-active .cast-filter-avatar {
  box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--badge-color, var(--accent));
}

/* ===== ユニットフィルタ：グループ通話風 ===== */

.unit-filter-btn {
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 6px 14px 6px 8px;
  font-size: 0.82rem;
  font-weight: 600;
  min-height: 44px;
}

.unit-filter-avatars {
  display: inline-flex;
  align-items: center;
}

.unit-filter-avatars span {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--badge-color, #ccc);
  border: 2px solid var(--surface);
}

.unit-filter-avatars span:nth-child(2) {
  margin-left: -6px;
}

.unit-filter-btn.is-active {
  border-color: var(--badge-color, var(--accent));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--badge-color, var(--accent)) 25%, transparent);
  background: color-mix(in srgb, var(--badge-color, var(--accent)) 10%, white);
}

.hidden {
  display: none;
}

.unit-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.unit-section-header .filter-heading {
  margin: 0;
}

.unit-more-toggle {
  font-family: var(--mono);
  cursor: pointer;
  border: none;
  background: none;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 0;
}

.selection-notice {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  margin: 8px 0 0;
}

.cast-filter-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== 状態フィルタ・その他ボタン ===== */

.status-filter-btn,
.reset-btn,
.action-btn,
.page-btn {
  font-family: var(--mono);
  cursor: pointer;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  min-height: 44px;
}

.status-filter-btn.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.reset-btn {
  width: 100%;
  margin-top: 4px;
  background: var(--surface-alt);
}

/* ===== 詳細検索：シラバス/時間割風 ===== */

.discovery-toggle-btn {
  width: 100%;
  font-family: var(--mono);
  cursor: pointer;
  border-radius: 10px;
  border: 1.5px dashed var(--border);
  background: var(--surface-alt);
  color: var(--ink-soft);
  padding: 10px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  min-height: 44px;
  margin-bottom: 12px;
}

.discovery-toggle-btn[aria-expanded="true"] {
  border-style: solid;
  color: var(--accent);
  border-color: var(--accent);
}

.discovery-panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-alt);
  padding: 14px;
  margin-bottom: 12px;
}

.discovery-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.discovery-field-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.discovery-field select,
.facet-value-area select {
  font-family: inherit;
  font-size: 0.85rem;
  padding: 8px 10px;
  min-height: 44px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  width: 100%;
}

.discovery-field select:focus,
.facet-value-area select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.facet-value-area {
  margin-top: 12px;
}

.facet-value-area:empty {
  margin-top: 0;
}

.facet-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.facet-chip {
  font-family: inherit;
  cursor: pointer;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  min-height: 44px;
}

.facet-chip.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.facet-value-area .search-input {
  margin-bottom: 0;
}

.discovery-reset-row {
  margin-top: 12px;
}

.discovery-reset-btn {
  width: 100%;
  font-family: var(--mono);
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink-soft);
  padding: 8px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  min-height: 40px;
}

.loading-state,
.error-state,
.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.error-state {
  color: #d64545;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.result-count {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin: 0;
}

.sort-control {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.sort-control select {
  font-family: inherit;
  font-size: 0.8rem;
  padding: 6px 8px;
  min-height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
}

.episode-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .episode-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== エピソードカード：配信タイル風 ===== */

.episode-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 6px 16px var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.episode-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px var(--shadow);
}

.episode-thumb-link {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  background: var(--surface-alt);
  border-bottom: 3px solid var(--ink);
}

.episode-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.thumb-rec-chip {
  position: absolute;
  top: 8px;
  left: 8px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(27, 36, 48, 0.72);
  color: #fff;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  padding: 3px 8px;
  border-radius: 999px;
  backdrop-filter: blur(2px);
}

.thumb-rec-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ff5d5d;
}

.episode-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.episode-title {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
}

.episode-title:hover {
  color: var(--accent);
}

.episode-meta {
  display: flex;
  gap: 10px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.episode-number {
  color: var(--accent);
  font-weight: 600;
}

.cast-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.cast-badge {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--badge-color, #ccc);
  color: #1b2430;
  font-weight: 700;
}

.cast-badge-empty {
  font-size: 0.75rem;
  color: var(--ink-soft);
}

.unit-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.unit-badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--badge-color, #888) 18%, white);
  border: 1px solid var(--badge-color, #888);
  color: color-mix(in srgb, var(--badge-color, #888) 65%, black);
}

.meta-toggle-btn {
  align-self: flex-start;
  font-family: var(--mono);
  cursor: pointer;
  border: 1px dashed var(--border);
  background: none;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  min-height: 32px;
}

.meta-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.meta-tag-row[hidden] {
  display: none;
}

.meta-tag-chip {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--ink-soft);
}

.episode-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.action-btn {
  flex: 1;
}

.action-btn.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 24px;
}

.page-btn.is-current {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.site-footer {
  text-align: center;
  padding: 24px 16px 40px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.7rem;
}