/* ─── Custom properties ─────────────────────────────────────────────────────── */
:root {
  --font-head: 'Poppins', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --bg:        #111;
  --border:    rgba(255,255,255,0.11);
  --subtle:    rgba(255,255,255,0.055);
}

/* ─── Base / background ──────────────────────────────────────────────────────── */
/* Only set background on viewport/body — NOT on .reveal itself (iOS Safari bug) */
body,
.reveal-viewport {
  background: var(--bg) !important;
}

/* ─── Typography ─────────────────────────────────────────────────────────────── */
.reveal {
  font-family: var(--font-body);
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
  font-family: var(--font-head);
  text-transform: none;          /* override Reveal's default uppercase */
  letter-spacing: -0.025em;
  font-weight: 700;
  line-height: 1.2;
}

/* ─── Tables ─────────────────────────────────────────────────────────────────── */
.reveal table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--font-body);
}

.reveal table thead tr {
  border-bottom: 1px solid rgba(255,255,255,0.18);
}

.reveal table th {
  border: none;
  padding: 0.45em 0.75em;
  font-family: var(--font-head);
  font-size: 0.72em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  opacity: 0.5;
  text-align: left;
}

.reveal table td {
  border: none;
  padding: 0.5em 0.75em;
  vertical-align: top;
  line-height: 1.4;
}

.reveal table tbody tr {
  border: none;
}

.reveal table tbody tr:nth-child(odd) {
  background: var(--subtle);
}

.reveal table tbody tr:hover {
  background: rgba(255,255,255,0.08);
}

/* ─── Song link base ─────────────────────────────────────────────────────────── */
/* Shared reset for all inline song-title buttons */
.song-link {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 0;
  font: inherit;
  text-decoration: none;
  text-align: inherit;
}
.song-link:hover {
  opacity: 0.8;
}

/* ─── Evidence cards ─────────────────────────────────────────────────────────── */
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9em;
  margin: 0.5em 0;
}

.evidence-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-align: left;
  display: flex;
  flex-direction: column;
}

.evidence-card-art {
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8em;
  flex-shrink: 0;
}

.evidence-card-body {
  padding: 0.6em 0.8em 0.75em;
  flex: 1;
}

.evidence-card-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.78em;
  line-height: 1.25;
  margin-bottom: 0.25em;
}

.evidence-card-artist {
  font-size: 0.68em;
  opacity: 0.6;
  margin-bottom: 0.35em;
}

.evidence-card-note {
  font-size: 0.68em;
  opacity: 0.8;
  font-style: italic;
  line-height: 1.4;
}

/* ─── Song overlay ───────────────────────────────────────────────────────────── */
.song-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

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

.overlay-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.song-card {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #1c1c24;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 14px;
  padding: 24px;
  min-width: 300px;
  max-width: 400px;
  width: 90vw;
  font-family: var(--font-body);
  color: #fff;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

.song-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.song-note {
  font-size: 2.2em;
  opacity: 0.3;
  line-height: 1;
  flex-shrink: 0;
}

.song-card-info {
  flex: 1;
  min-width: 0;
}

.song-card-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05em;
  line-height: 1.3;
}

.song-card-meta {
  font-size: 0.8em;
  opacity: 0.5;
  margin-top: 3px;
}

.overlay-close {
  background: none;
  border: none;
  color: rgba(255,255,255,0.35);
  font-size: 1.3em;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.15s;
}
.overlay-close:hover { color: #fff; }

.song-card-platforms {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.platform-btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 14px;
  background: var(--p-bg);
  color: var(--p-fg);
  border-radius: 9px;
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95em;
  transition: opacity 0.12s;
}
.platform-btn:hover { opacity: 0.85; }
.platform-arrow { opacity: 0.65; }

/* ─── Playlist slide ─────────────────────────────────────────────────────────── */
.playlist-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1em;
  margin-bottom: 0.5em;
}

.playlist-create-btn {
  flex-shrink: 0;
  background: #1DB954;
  color: #000;
  border: none;
  border-radius: 20px;
  padding: 0.5em 1.2em;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.55em;
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}
.playlist-create-btn:hover { opacity: 0.88; transform: scale(1.03); }
.playlist-create-btn.copied { background: #19a349; }

.playlist-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.56em;
}

.playlist-table thead th {
  border: none;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding: 0.3em 0.5em;
  font-family: var(--font-head);
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.38;
  text-align: left;
  font-weight: 600;
}

.playlist-table .col-num {
  width: 2.2em;
  text-align: right;
  padding-right: 0.8em !important;
  opacity: 0.32;
}

.playlist-table .col-year {
  width: 3.5em;
  text-align: right;
  opacity: 0.38;
}

.playlist-table tr.pl-group-row td {
  padding: 0.75em 0.5em 0.2em;
  font-family: var(--font-head);
  font-size: 0.82em;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.38;
  font-weight: 600;
}

.playlist-table tr.pl-song-row td {
  padding: 0.25em 0.5em;
  vertical-align: middle;
}

.playlist-table tr.pl-song-row:hover {
  background: rgba(255,255,255,0.05);
}

.playlist-table .pl-title {
  font-weight: 500;
  color: #fff;
}

.playlist-table .pl-artist {
  opacity: 0.52;
}

/* ─── W1 Activity: Build Your Skeleton ──────────────────────────────────────── */
.activity-view {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 16px 20px;
  box-sizing: border-box;
  font-family: var(--font-body);
  color: #e8e8e8;
  overflow: hidden;
}

.activity-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
  flex-shrink: 0;
}

.activity-title {
  font-family: var(--font-head);
  font-size: 1.2em;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.activity-sub {
  font-size: 0.72em;
  opacity: 0.5;
  margin-top: 2px;
}

.reset-btn {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.78em;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s;
}
.reset-btn:hover { background: rgba(255,255,255,0.13); }

.zones-scroll {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-right: 4px;
}

.drop-zone {
  display: flex;
  align-items: stretch;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  overflow: hidden;
  min-height: 50px;
  transition: border-color 0.15s, background 0.15s;
}

.drop-zone.drag-over {
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.04);
}

.zone-label-col {
  width: 76px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 8px 4px;
}

.zone-label-col.type-verse  { background: rgba(123,167,212,0.2); }
.zone-label-col.type-chorus { background: rgba(200,168,74,0.2); }
.zone-label-col.type-bridge { background: rgba(212,123,170,0.2); }
.zone-label-col.type-outro  { background: rgba(140,140,140,0.12); }

.zone-label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.72em;
  letter-spacing: -0.01em;
}

.zone-sublabel {
  font-size: 0.52em;
  opacity: 0.55;
  margin-top: 2px;
}

.zone-content {
  flex: 1;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  min-width: 0;
}

.zone-placeholder {
  font-size: 0.68em;
  opacity: 0.28;
  font-style: italic;
  pointer-events: none;
}

.pool-wrap {
  flex-shrink: 0;
  margin-top: 10px;
}

.pool-label {
  font-size: 0.62em;
  opacity: 0.4;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.card-pool {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 6px;
  padding: 6px 11px;
  font-size: 0.68em;
  cursor: grab;
  user-select: none;
  touch-action: none;
  transition: background 0.12s, opacity 0.12s;
  font-family: var(--font-body);
  color: #e8e8e8;
  line-height: 1.4;
}
.card:hover { background: rgba(255,255,255,0.12); }
.card.is-dragging { opacity: 0.3; }

.drag-ghost {
  position: fixed;
  z-index: 9999;
  pointer-events: none;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.38);
  border-radius: 6px;
  padding: 6px 11px;
  font-size: 0.68em;
  font-family: var(--font-body);
  color: #e8e8e8;
  box-shadow: 0 4px 14px rgba(0,0,0,0.45);
  line-height: 1.4;
}

/* ─── W2 Activity: Zoom-In Map ───────────────────────────────────────────────── */
.zoom-map-scroll {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  gap: 1.5em;
  align-items: flex-start;
  padding-right: 4px;
}

.zoom-map {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.zoom-level {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 13px;
}
.zoom-level-1 { border-color: rgba(255,255,255,0.14); }
.zoom-level-2 { border-color: rgba(255,200,80,0.28); }
.zoom-level-3 { border-color: rgba(80,210,130,0.28); }

.zoom-level-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 7px;
}

.zoom-level-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.75em;
  flex-shrink: 0;
}

.zoom-level-label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.68em;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.zoom-level-sublabel {
  font-size: 0.62em;
  opacity: 0.48;
  margin-top: 1px;
}

.zoom-input {
  width: 100%;
  box-sizing: border-box;
  background: rgba(255,255,255,0.055);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 6px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.82em;
  padding: 7px 11px;
  resize: none;
  transition: border-color 0.15s;
}
.zoom-input:focus {
  outline: none;
  border-color: rgba(255,255,255,0.38);
}
.zoom-input::placeholder { opacity: 0.32; }

.zoom-step-arrow {
  text-align: center;
  opacity: 0.28;
  font-size: 0.85em;
  padding: 3px 0;
}

.zoom-film-test {
  margin-top: 7px;
  font-size: 0.68em;
  color: rgba(80,210,130,0.85);
  opacity: 0;
  transition: opacity 0.2s;
  font-style: italic;
}
.zoom-film-test.visible { opacity: 1; }

.seed-wrap {
  width: 190px;
  flex-shrink: 0;
}

.seed-label {
  font-size: 0.62em;
  opacity: 0.42;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 8px;
  line-height: 1.4;
}

.seed-pool {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.seed-card {
  background: rgba(255,255,255,0.065);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 5px;
  padding: 5px 9px;
  font-size: 0.68em;
  font-family: var(--font-body);
  color: #e8e8e8;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.seed-card:hover { background: rgba(255,255,255,0.11); }
.seed-card.active {
  background: rgba(255,200,80,0.14);
  border-color: rgba(255,200,80,0.38);
  color: #ffc850;
}