/* ========================================
   スタラジ — Minimal Modern Design System
   ======================================== */

:root {
  /* Background layers */
  --bg-primary:    #000000;
  --bg-elevated:   #1c1c1e;
  --bg-secondary:  #2c2c2e;
  --bg-tertiary:   #3a3a3c;

  /* Text hierarchy */
  --text-primary:   #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary:  #6e6e73;

  /* Accent */
  --accent:        #0a84ff;
  --accent-hover:  #409cff;
  --accent-subtle: rgba(10, 132, 255, 0.12);

  /* Borders */
  --border:       rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Badges */
  --badge-daily-bg:   rgba(48, 209, 88, 0.15);
  --badge-daily-text: #30d158;
  --badge-weekly-bg:   rgba(175, 82, 222, 0.15);
  --badge-weekly-text: #af52de;

  /* Shadows */
  --shadow-card:       0 2px 12px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-hover);

  /* Easing */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ---- Base ---- */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  background: var(--bg-primary);
  color: var(--text-secondary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

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

/* ---- Hero ---- */
.hero {
  text-align: center;
  padding: 4rem 1.5rem 3.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 680px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-subtle);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-top: 0.6rem;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.2rem;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.hero-divider {
  width: 4px;
  height: 4px;
  background: var(--text-tertiary);
  border-radius: 50%;
  opacity: 0.5;
}

.hero-rss {
  font-weight: 500;
}

/* ---- View Tabs ---- */
.view-tabs {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  padding: 1.25rem 1.5rem 0;
  max-width: 680px;
  margin: 0 auto;
}

.view-tab {
  flex: 1;
  max-width: 160px;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-tertiary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s var(--ease-out),
              color 0.2s var(--ease-out),
              border-color 0.2s var(--ease-out);
}

.view-tab:first-child { border-radius: 10px 0 0 10px; }
.view-tab:last-child  { border-radius: 0 10px 10px 0; }

.view-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-secondary);
}

.view-tab.is-active {
  color: var(--text-primary);
  background: var(--accent-subtle);
  border-color: var(--accent);
}

/* ---- Filter Bar ---- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.75rem 1.5rem 0;
  max-width: 680px;
  margin: 0 auto;
}

.filter-btn {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s var(--ease-out);
}

.filter-btn:hover {
  color: var(--text-secondary);
  border-color: var(--border-hover);
}

.filter-btn.is-active {
  color: var(--text-primary);
  background: var(--accent-subtle);
  border-color: var(--accent);
}

/* ---- Main ---- */
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ---- Episode Card ---- */
.episode-card {
  background: var(--bg-elevated);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s var(--ease-out),
              box-shadow 0.25s var(--ease-out);
  animation: fadeInUp 0.5s var(--ease-out) both;
}

.episode-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

/* ---- Collapsible Card ---- */
.episode-card-toggle {
  cursor: pointer;
  user-select: none;
}

.episode-card-body {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s var(--ease-out),
              opacity 0.25s var(--ease-out),
              margin-top 0.35s var(--ease-out);
  margin-top: 0;
}

.episode-card.is-expanded .episode-card-body {
  max-height: 800px;
  opacity: 1;
  margin-top: 0.6rem;
}

/* Chevron */
.episode-chevron {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-right: 2px solid var(--text-tertiary);
  border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease-out);
  margin-left: 0.5rem;
}

.episode-card.is-expanded .episode-chevron {
  transform: rotate(-135deg);
}

/* Highlight flash from calendar click */
.episode-card.is-highlighted {
  box-shadow: 0 0 0 2px var(--accent), var(--shadow-card-hover);
  transition: box-shadow 0.3s var(--ease-out);
}

/* ---- Card Header ---- */
.episode-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.episode-header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.episode-header-right {
  display: flex;
  align-items: center;
}

.episode-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.episode-duration {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

/* ---- Mode Badge ---- */
.mode-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
}

.mode-daily {
  background: var(--badge-daily-bg);
  color: var(--badge-daily-text);
}

.mode-weekly {
  background: var(--badge-weekly-bg);
  color: var(--badge-weekly-text);
}

/* ---- Title ---- */
.episode-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 0.6rem;
}

/* ---- Cast Chips ---- */
.episode-cast {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.cast-chip {
  position: relative;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  transition: background 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.cast-chip:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* ---- Cast Tooltip ---- */
.cast-chip--has-tooltip {
  cursor: pointer;
}

.cast-tooltip {
  display: none;
  position: fixed;
  width: 260px;
  max-width: calc(100vw - 2rem);
  background: var(--bg-elevated);
  border: 1px solid var(--border-hover);
  border-radius: 12px;
  padding: 0.85rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  z-index: 100;
  text-align: left;
  pointer-events: none;
  animation: tooltipIn 0.15s var(--ease-out);
}

.cast-tooltip.is-visible {
  display: block;
}

/* Arrow (above chip — default) */
.cast-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: var(--arrow-left, 50%);
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--border-hover);
}

/* Arrow (below chip — flipped) */
.cast-tooltip--below::after {
  top: auto;
  bottom: 100%;
  border-top-color: transparent;
  border-bottom-color: var(--border-hover);
}

.cast-tooltip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.cast-tooltip-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.cast-tooltip-category {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  white-space: nowrap;
}

.cast-tooltip-category--mc {
  background: var(--accent-subtle);
  color: var(--accent);
}

.cast-tooltip-category--assistant {
  background: var(--badge-daily-bg);
  color: var(--badge-daily-text);
}

.cast-tooltip-category--guest {
  background: var(--badge-weekly-bg);
  color: var(--badge-weekly-text);
}

.cast-tooltip-role {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.cast-tooltip-desc {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  line-height: 1.5;
}

.cast-tooltip-desc--unknown {
  color: var(--text-tertiary);
  font-style: italic;
  opacity: 0.7;
}

@keyframes tooltipIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Tooltip size for small screens */
@media (max-width: 480px) {
  .cast-tooltip {
    width: 220px;
  }
}

/* ---- Segments ---- */
.episode-segments {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  margin-bottom: 1rem;
}

.segment-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  padding: 0.3rem 0.4rem;
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.7;
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out);
}

.segment-item:hover {
  background: var(--accent-subtle);
  color: var(--accent);
}

.segment-time {
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
  font-size: 0.75rem;
  min-width: 2.5rem;
}

.segment-item:hover .segment-time {
  color: var(--accent);
}

/* ---- Audio ---- */
.audio-wrapper {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

audio {
  width: 100%;
  height: 40px;
  border-radius: 8px;
  opacity: 0.85;
  transition: opacity 0.2s var(--ease-out);
}

audio:hover {
  opacity: 1;
}

/* ---- Script Download ---- */
.script-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-tertiary);
  transition: color 0.2s var(--ease-out);
}

.script-link:hover {
  color: var(--accent);
}

/* ---- Sources ---- */
.sources-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
  padding: 0.4rem 0;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-tertiary);
  cursor: pointer;
  border: none;
  background: none;
  transition: color 0.2s var(--ease-out);
}

.sources-toggle:hover {
  color: var(--text-secondary);
}

.sources-list {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
}

.source-item {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  padding: 0.25rem 0;
  line-height: 1.5;
}

.source-media {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ---- States ---- */
.loading {
  text-align: center;
  color: var(--text-tertiary);
  padding: 4rem 1rem;
  font-size: 0.9rem;
  animation: pulse 1.5s ease-in-out infinite;
}

.empty {
  text-align: center;
  color: var(--text-tertiary);
  padding: 4rem 1rem;
  font-size: 0.9rem;
}

/* ---- Calendar ---- */
#calendar {
  max-width: 680px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2rem;
}

.calendar {
  background: var(--bg-elevated);
  border-radius: 16px;
  padding: 1.2rem;
  box-shadow: var(--shadow-card);
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.calendar-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.calendar-nav {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s var(--ease-out), border-color 0.15s var(--ease-out);
}

.calendar-nav:hover {
  background: var(--bg-secondary);
  border-color: var(--border-hover);
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
  margin-bottom: 0.25rem;
}

.calendar-day-name {
  text-align: center;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-tertiary);
  padding: 0.25rem 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.calendar-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  border-radius: 8px;
  cursor: default;
  transition: background 0.15s var(--ease-out);
}

.calendar-cell--empty {
  visibility: hidden;
}

.calendar-cell-num {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

.calendar-cell--today .calendar-cell-num {
  color: var(--text-primary);
  font-weight: 700;
}

.calendar-cell--has-episode {
  cursor: pointer;
}

.calendar-cell--has-episode .calendar-cell-num {
  color: var(--text-primary);
  font-weight: 600;
}

.calendar-cell--has-episode:hover {
  background: var(--accent-subtle);
}

.calendar-cell--has-episode:hover .calendar-cell-num {
  color: var(--accent);
}

.calendar-cell-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 2px;
}

.calendar-cell--today {
  background: rgba(255, 255, 255, 0.05);
}

/* ---- Footer ---- */
footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-tertiary);
  font-size: 0.7rem;
  border-top: 1px solid var(--border);
}

/* ---- Animations ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50%      { opacity: 1; }
}

/* ---- Responsive ---- */
@media (min-width: 480px) {
  .hero-title {
    font-size: 3rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 1rem 2.5rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  main {
    padding: 1.25rem 1rem 3rem;
  }

  .episode-card {
    padding: 1.2rem;
    border-radius: 12px;
  }

  .episode-title {
    font-size: 1rem;
  }

  .episode-segments {
    padding: 0.5rem;
  }
}

/* ---- Accessibility ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}