/* ═══════════════════════════════════════════
   Design Tokens
   ═══════════════════════════════════════════ */
html { background: #f5f0eb; }
:root {
  /* Background */
  --bg: #f5f0eb;
  --card-bg: #faf7f4;
  --card-border: #d4c9bd;

  /* Text */
  --text-primary: #2a2520;
  --text-secondary: #7a7068;
  --text-tertiary: #a89e94;

  /* Connections */
  --connection-stroke: #c4b5a5;
  --connection-highlight: #B5705A;
  --connection-width: 1.5;

  /* Card sizes */
  --card-root-width: 280px;
  --card-r1-width: 180px;
  --card-r2-width: 155px;

  /* Art sizes */
  --art-root: 254px;
  --art-r1: 150px;
  --art-r2: 125px;

  /* Radius */
  --card-radius: 12px;
  --art-radius: 6px;

  /* Shadows */
  --card-shadow: 0 1px 4px rgba(42, 37, 32, 0.04);
  --card-hover-shadow: 0 4px 20px rgba(42, 37, 32, 0.08);

  /* Toolbar buttons */
  --toolbar-btn-bg: #ede7e0;

  /* Font */
  --font: 'Space Grotesk', sans-serif;
}

/* ═══════════════════════════════════════════
   Night Mode
   ═══════════════════════════════════════════ */
/* Applied to html by blocking script before body renders */
html.night {
  background: #1e2228;
}
body.night {
  --bg: #1e2228;
  --card-bg: #2d3139;
  --card-border: #333;
  --text-primary: #e8e4e0;
  --text-secondary: #9a9590;
  --text-tertiary: #7f7a75;
  --connection-stroke: #444;
  --connection-highlight: #d4896e;
  --card-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
  --card-hover-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --toolbar-btn-bg: #252a31;
}
body.night .album-art { background: #363b44; }
body.night .album-art.no-art { background: #363b44; }
body.night .node-card .rank-tooltip { background: #e8e4e0; color: #141414; }
body.night .node-card .rank-tooltip::after { border-top-color: #e8e4e0; }
body.night .progress-bar .bar-track { background: rgba(255,255,255,0.2); border-top-color: rgba(255,255,255,0.15); }
body.night .progress-bar .bar-fill { background: #d4896e; }
body.night .node-card.loading::after { background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.06) 50%, transparent 75%); background-size: 200% 100%; animation: card-shimmer 2.5s ease-in-out infinite; }
body.night #help-overlay { background: rgba(0, 0, 0, 0.6); }
body.night #help-modal { box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5); }
body.night .mode-tab.active { background: #3f3530; color: #d4896e; box-shadow: none; }
body.night #mode-tabs, body.night #mobile-mode-tabs { background: #252a31; }
body.night #mc-player { background: #1e2228; }
body.night .help-diagram { background: #252a31; }
body.night .help-diagram rect[fill="#faf7f4"] { fill: #2d3139; }
body.night .help-diagram rect[fill="#e8e2db"] { fill: #363b44; }
body.night .help-diagram rect[fill="#FAF7F4"] { fill: #2d3139; }
body.night .help-diagram line[stroke="#c4b5a5"] { stroke: #444; }
body.night .help-diagram rect[stroke="#d4c9bd"] { stroke: #333; }
body.night .help-diagram rect[stroke="#D4C9BD"] { stroke: #333; }
body.night .help-diagram text[fill="#2a2520"] { fill: #e8e4e0; }
body.night .help-diagram text[fill="#B5705A"] { fill: #d4896e; }
body.night .help-diagram text[fill="#7a7068"] { fill: #9a9590; }
body.night .ac-item:hover { background: rgba(255,255,255,0.06); }
body.night .help-diagram path[stroke="#2A2520"] { stroke: #e8e4e0; }
body.night .help-diagram path[stroke="#212121"] { stroke: #666; }
body.night .help-diagram path[stroke="#C4B5A5"] { stroke: #444; }
body.night .help-diagram path[fill="#2A2520"] { fill: #e8e4e0; }
body.night .help-diagram path[fill="#FAF7F4"] { fill: #2d3139; }
body.night .help-diagram path[stroke="#D4C9BD"] { stroke: #333; }
body.night .help-diagram rect[fill="#E8E2DB"] { fill: #2a2a2a; }
body.night .help-diagram text[fill="#2A2520"] { fill: #e8e4e0; }
body.night .help-diagram text[fill="#B5705A"] { fill: #d4896e; }
body.night #dev-panel { background: #1a1a1a; border-color: #333; }

/* Theme toggle */
#theme-toggle {
  position: fixed;
  bottom: 16px;
  left: 16px;
  z-index: 50;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 7px 14px;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s ease, color 0.2s ease, transform 0.2s ease, background 0.3s ease, border-color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.02em;
}
#theme-toggle:hover {
  box-shadow: var(--card-hover-shadow);
  color: var(--text-primary);
  transform: translateY(-1px);
}
#theme-toggle:active { transform: translateY(0); }

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

body {
  background: var(--bg);
  font-family: var(--font);
  color: var(--text-primary);
  margin: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: background 0.4s ease, color 0.4s ease;
}

/* ═══════════════════════════════════════════
   Toolbar
   ═══════════════════════════════════════════ */
#toolbar {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: relative;
  z-index: 200;
}
#toolbar-row {
  display: flex;
  align-items: center;
  height: 52px;
  padding: 0 20px;
}
.card-toolbar {
  border-bottom: 1px solid var(--card-border);
  border-radius: var(--card-radius) var(--card-radius) 0 0;
  overflow: hidden;
  margin: -13px -13px 13px -13px;
  display: flex;
}
.card-toolbar #shuffle-btn { flex: 4; color: #9a5843; background: #eaeaea; transition: background 0.2s ease; }
.card-toolbar #card-link-btn { flex: 1; border-left: 1px solid var(--card-border); background: #fbf7f5; color: #9a5843; transition: color 0.2s, background 0.2s; }
.card-toolbar #card-link-btn .check-icon { display: none; }
.card-toolbar #card-link-btn.copied { color: #c0392b; background: var(--bg); }
.card-toolbar #card-link-btn.copied .link-icon { display: none; }
.card-toolbar #card-link-btn.copied .check-icon { display: block; }
.card-toolbar button {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--text-primary);
  background: var(--bg);
  border: none;
  padding: 13px 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background 0.15s ease, color 0.15s ease;
}
.card-toolbar #shuffle-btn:hover { background: #e8b8a8; }
.card-toolbar #shuffle-btn:active { background: #dfa998; }
.card-toolbar #card-link-btn:hover { background: #f0ebe7; }
.card-toolbar #card-link-btn:active { background: #e6dfda; }
body.night .card-toolbar #shuffle-btn { background: #353b44; color: #d4896e; }
body.night .card-toolbar #shuffle-btn:hover { background: #3f3530; }
body.night .card-toolbar #shuffle-btn:active { background: #4a3d36; }
body.night .card-toolbar #card-link-btn { background: #2d3139; color: #d4896e; }
body.night .card-toolbar #card-link-btn:hover { background: rgba(255,255,255,0.06); }
body.night .card-toolbar #card-link-btn:active { background: rgba(255,255,255,0.1); }
.card-toolbar button svg {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-footer {
  border-top: 1px solid var(--card-border);
  border-radius: 0 0 var(--card-radius) var(--card-radius);
  overflow: hidden;
  margin: 13px -13px -13px -13px;
}
.card-footer button, .card-footer .all-shown {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  background: var(--card-bg);
  border: none;
  padding: 10px 5px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.card-footer button { cursor: pointer; transition: background 0.2s ease; }
.card-footer .all-shown { font-size: 13px; color: var(--text-tertiary); }
.card-footer button:hover { background: #f0ebe7; color: var(--text-primary); }
.card-footer button:active { background: #e6dfda; }
body.night .card-footer button:hover { background: rgba(255,255,255,0.06); }
body.night .card-footer button:active { background: rgba(255,255,255,0.1); }

.toolbar-side {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}
.toolbar-right {
  justify-content: flex-end;
  gap: 8px;
}


/* ═══════════════════════════════════════════
   Mode Tabs
   ═══════════════════════════════════════════ */
#mode-tabs {
  display: flex;
  gap: 2px;
  background: var(--card-border);
  border-radius: var(--card-radius);
  padding: 2px;
}
.mode-tab {
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  background: none;
  border: none;
  border-radius: calc(var(--card-radius) - 2px);
  padding: 6px 16px;
  cursor: pointer;
  transition: none;
  letter-spacing: 0.02em;
}
.mode-tab:not(.active):hover { color: var(--text-primary); background: rgba(0,0,0,0.08); }
body.night .mode-tab:not(.active):hover { background: rgba(255,255,255,0.1); }
.mode-tab.active {
  background: #f0ddd4;
  color: #9a5843;
  font-weight: 500;
  box-shadow: none;
}

/* ═══════════════════════════════════════════
   View Containers
   ═══════════════════════════════════════════ */
#tracks-view {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  transition: opacity 0.3s ease;
}
#crates-view {
  flex: 1;
  position: relative;
  overflow: hidden;
  cursor: grab;
  transition: opacity 0.3s ease;
  user-select: none;
  -webkit-user-select: none;
}
#crates-view.dragging { cursor: grabbing; }

#crates-surface {
  position: absolute;
  transform-origin: 0 0;
  will-change: transform;
}

.crate-stack {
  position: absolute;
  cursor: pointer;
  transition: opacity 0.3s ease;
}
.crate-stack.fade-out { opacity: 0; transition: opacity 0.15s ease; }

#crates-surface.has-hover .crate-stack.hovered { z-index: 100 !important; }

.crate-card {
  position: absolute;
  top: 0; left: 0;
  border-radius: 2px;
  overflow: hidden;
  background: #b0aaa4;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), z-index 0s, box-shadow 0.25s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}
.crate-card.active { box-shadow: 0 6px 24px rgba(0,0,0,0.15); }
.crate-card img { width: 100%; height: 100%; object-fit: cover; display: block; }

.crate-info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 10px 12px;
  background: rgba(42, 37, 32, 0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 0 0 2px 2px;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
.crate-card.active .crate-info { opacity: 1; }
.crate-info .ci-title { font-family: var(--font); font-size: 13px; font-weight: 600; color: #fff; line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.crate-info .ci-artist { font-family: var(--font); font-size: 11px; font-weight: 300; color: rgba(255,255,255,0.75); line-height: 1.3; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.crate-info .ci-count { font-family: var(--font); font-size: 9px; color: rgba(255,255,255,0.4); margin-top: 4px; }

.crate-card.placeholder::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.08) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: crate-shimmer 2s ease-in-out infinite;
}
@keyframes crate-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Flying artwork transition (crates → tracks) */
.flying-art {
  position: fixed;
  z-index: 250;
  border-radius: 4px;
  border: 1px solid transparent;
  background: transparent;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.flying-art img {
  position: absolute;
  top: 0;
  left: 0;
  object-fit: cover;
  border-radius: 4px;
  transition: all 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.node-card.fly-hidden { opacity: 0 !important; animation: none !important; }
.connection-path.fly-waiting { opacity: 0 !important; animation: none !important; stroke-dashoffset: 2000 !important; }

/* Text fades in after card shell appears */
.node-card.fly-text-hidden .track-title,
.node-card.fly-text-hidden .artist-name,
.node-card.fly-text-hidden .dj-line,
.node-card.fly-text-hidden .rank-tooltip { opacity: 0; }
.node-card .track-title,
.node-card .artist-name,
.node-card .dj-line { transition: opacity 0.3s ease; }
#crates-view.fading {
  position: fixed;
  inset: 0;
  top: 52px;
  z-index: 150;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.crate-page { position: absolute; top: 0; left: 0; }

#tracks-view.hidden, #crates-view.hidden {
  display: none;
}

/* ═══════════════════════════════════════════
   Graph Viewport & Container
   ═══════════════════════════════════════════ */
#graph-viewport {
  flex: 1;
  overflow: hidden;
  position: relative;
  display: flex;
  justify-content: center;
}

#graph-container {
  position: relative;
  transform-origin: center top;
  transition: transform 0.3s ease;
}

#filter-label {
  position: absolute;
  font-family: var(--font);
  font-size: 12px;
  color: var(--text-tertiary);
  white-space: nowrap;
  z-index: 5;
}
#filter-label:empty { display: none; }
#filter-clear {
  font-family: var(--font);
  font-size: 12px;
  font-weight: 500;
  color: var(--connection-highlight);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: 4px;
}
#filter-clear:hover { text-decoration: underline; }

#connections-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

#nodes-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
}

/* ═══════════════════════════════════════════
   Node Cards
   ═══════════════════════════════════════════ */
.node-card {
  position: absolute;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 13px;
  cursor: default;
  transition: box-shadow 0.25s ease;

  /* fade in — JS sets opacity:1 after animation so .playing toggle works */
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.node-card.settled {
  opacity: 1;
  animation: none;
}

.node-card:hover {
  box-shadow: var(--card-hover-shadow);
}

/* Rank sizing */
.node-card[data-rank="root"] {
  width: var(--card-root-width);
  animation-delay: 0.05s;
}
.node-card[data-rank="1"] {
  width: var(--card-r1-width);
  animation-delay: 0.25s;
}
.node-card[data-rank="2"] {
  width: var(--card-r2-width);
  animation-delay: 0.45s;
}

/* Album art */
.node-card .album-art {
  display: block;
  border-radius: var(--art-radius);
  aspect-ratio: 1;
  object-fit: cover;
  background: #d9d1c7;
  margin-bottom: 10px;
}

.node-card[data-rank="root"] .album-art {
  width: var(--art-root);
  height: var(--art-root);
}
.node-card[data-rank="1"] .album-art {
  width: var(--art-r1);
  height: var(--art-r1);
}
.node-card[data-rank="2"] .album-art {
  width: var(--art-r2);
  height: var(--art-r2);
}

/* Text — 2-line clamp with tooltip for overflow */
.node-card .track-title,
.node-card .artist-name,
.node-card .dj-line {
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.node-card .dj-line.expanded {
  -webkit-line-clamp: unset;
}

.node-card .track-title {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 4px;
}
.node-card .artist-name {
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.3;
  margin-bottom: 6px;
}

.node-card[data-rank="root"] .track-title { font-size: 22px; }
.node-card[data-rank="root"] .artist-name { font-size: 18px; }
.node-card[data-rank="1"] .track-title { font-size: 17px; }
.node-card[data-rank="1"] .artist-name { font-size: 14px; }
.node-card[data-rank="2"] .track-title { font-size: 16px; }
.node-card[data-rank="2"] .artist-name { font-size: 14px; }

.node-card .dj-line {
  font-weight: 300;
  color: var(--text-tertiary);
  line-height: 1.3;
}
.node-card[data-rank="root"] .dj-line { font-size: 18px; }
.node-card[data-rank="1"] .dj-line { font-size: 14px; }
.node-card[data-rank="2"] .dj-line { font-size: 13px; }

a.track-title {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--card-border);
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}
a.track-title:hover {
  text-decoration-color: var(--text-secondary);
}

.dj-line a {
  color: var(--text-tertiary);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--card-border);
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}
.dj-line a:hover {
  color: var(--text-primary);
  text-decoration-color: var(--text-secondary);
}
.dj-more {
  font-family: var(--font);
  font-size: inherit;
  font-weight: 300;
  color: var(--text-tertiary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.dj-more:hover {
  color: var(--text-primary);
}

/* ═══════════════════════════════════════════
   Connection Paths
   ═══════════════════════════════════════════ */
.connection-path {
  fill: none;
  stroke: var(--connection-stroke);
  stroke-width: var(--connection-width);
  stroke-linecap: round;
  opacity: 0.6;
  transition: opacity 0.25s ease, stroke 0.25s ease;

  /* draw-in animation */
  stroke-dasharray: 2000;
  stroke-dashoffset: 2000;
  animation: drawLine 1s ease forwards;
  animation-delay: 0.3s;
}

.connection-path.highlighted {
  opacity: 0.85;
  stroke: var(--connection-highlight);
}

/* ═══════════════════════════════════════════
   Play Button & Audio State
   ═══════════════════════════════════════════ */
.art-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 10px;
  overflow: hidden;
  border-radius: var(--art-radius);
}

.art-wrap .album-art {
  margin-bottom: 0;
}

.play-btn {
  position: absolute;
  inset: 0;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
  padding: 0;
  background: rgba(42, 37, 32, 0.0);
  border-radius: var(--art-radius);
  z-index: 3;
}

.art-wrap:hover .play-btn,
.node-card.playing .play-btn {
  opacity: 1;
}

.play-btn svg {
  width: 32px;
  height: 32px;
  fill: #fff;
  filter: drop-shadow(0 1px 4px rgba(0,0,0,0.3));
  transition: transform 0.15s ease;
}

.play-btn:hover svg {
  transform: scale(1.1);
}

.node-card.playing {
  border-color: var(--glow-dark, var(--connection-highlight));
  box-shadow:
    0 4px 30px -4px color-mix(in srgb, var(--glow-a, var(--connection-highlight)) 35%, transparent),
    0 8px 50px -4px color-mix(in srgb, var(--glow-b, var(--connection-highlight)) 20%, transparent);
  transition: box-shadow 0.8s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.node-card.playing:hover {
  box-shadow:
    0 4px 30px -4px color-mix(in srgb, var(--glow-a, var(--connection-highlight)) 45%, transparent),
    0 8px 50px -4px color-mix(in srgb, var(--glow-b, var(--connection-highlight)) 30%, transparent);
}

.node-card.playing:not(.loading) .art-wrap {
  animation: art-breathe 3s ease-in-out infinite;
}

@keyframes art-breathe {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.013); }
}

/* Progress bar at bottom of art-wrap */
.progress-bar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 6px;
  cursor: pointer;
  z-index: 5;
}

.progress-bar .bar-track {
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.45);
  box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.4);
}

.progress-bar .bar-fill {
  height: 100%;
  background: var(--connection-highlight);
  width: 0%;
}

/* Loading shimmer — full card overlay */
.node-card.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
  background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.3) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: card-shimmer 2.5s ease-in-out infinite;
  pointer-events: none;
  z-index: 10;
}
@keyframes card-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.album-art.no-art {
  position: relative;
  background: #d9d1c7; /* fallback */
  filter: url(#gradient-distort) saturate(50%) hue-rotate(46deg);
}

/* Source badge (SoundCloud logo) */
.source-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  align-items: flex-end;
  gap: 1.5px;
  height: 20px;
  padding: 3px 4px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.source-badge .eq-bar {
  width: 2.5px;
  background: var(--connection-highlight);
  border-radius: 1.5px;
  height: 2px;
}
.node-card.playing .source-badge {
  opacity: 1;
}
.node-card.playing .source-badge .eq-bar {
  animation: eq-bounce var(--eq-dur, 0.8s) cubic-bezier(0.4, 0, 0.2, 1) infinite alternate;
}
.node-card.playing .source-badge .eq-bar:nth-child(1) { --eq-dur: 0.43s; animation-delay: 0s; }
.node-card.playing .source-badge .eq-bar:nth-child(2) { --eq-dur: 0.56s; animation-delay: 0.12s; }
.node-card.playing .source-badge .eq-bar:nth-child(3) { --eq-dur: 0.38s; animation-delay: 0.07s; }
.node-card.playing .source-badge .eq-bar:nth-child(4) { --eq-dur: 0.52s; animation-delay: 0.2s; }
.node-card.playing .source-badge .eq-bar:nth-child(5) { --eq-dur: 0.34s; animation-delay: 0.15s; }
@keyframes eq-bounce {
  0%   { height: 2px; }
  100% { height: var(--eq-max, 11px); }
}
.source-badge .eq-bar:nth-child(1) { --eq-max: 8px; }
.source-badge .eq-bar:nth-child(2) { --eq-max: 14px; }
.source-badge .eq-bar:nth-child(3) { --eq-max: 6px; }
.source-badge .eq-bar:nth-child(4) { --eq-max: 12px; }
.source-badge .eq-bar:nth-child(5) { --eq-max: 10px; }
/* "from set" label at top of art */
.from-set-label {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font);
  font-size: 9px;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 4px;
  padding: 2px 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 4;
}
.node-card.playing[data-source="set"] .from-set-label {
  opacity: 1;
}

/* No-artwork badge */
.album-art.no-art::after {
  content: 'no artwork';
  position: absolute;
  bottom: 4px;
  right: 5px;
  font-family: var(--font);
  font-size: 9px;
  color: rgba(255,255,255,0.5);
  white-space: nowrap;
}

/* ═══════════════════════════════════════════
   Tooltip
   ═══════════════════════════════════════════ */
.node-card .rank-tooltip {
  position: absolute;
  top: -32px;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: #1a1a1a;
  color: #fff;
  font-family: var(--font);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.03em;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.node-card .rank-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: #1a1a1a;
}

.node-card:hover .rank-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#center-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Help button */
#help-btn {
  flex-shrink: 0;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 6px 12px;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s ease, color 0.2s ease, transform 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
#help-btn .help-info-icon {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
#help-btn:hover {
  box-shadow: var(--card-hover-shadow);
  color: var(--text-primary);
  transform: translateY(-1px);
}
#help-btn:active { transform: translateY(0); }

/* Share button */
#share-btn {
  flex-shrink: 0;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 6px 12px;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s ease, color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}
#share-btn svg {
  width: 13px;
  height: 13px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
#share-btn:hover {
  box-shadow: var(--card-hover-shadow);
  color: var(--text-primary);
  transform: translateY(-1px);
}
#share-btn:active { transform: translateY(0); }
#share-btn.copied {
  color: var(--connection-highlight);
  border-color: var(--connection-highlight);
}
#share-btn.copied svg .check { display: block; }
#share-btn.copied svg .link { display: none; }
#share-btn:not(.copied) svg .check { display: none; }

/* Search: expanding inline input */
#search-btn-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
#search-btn { display: none; }
#toolbar-search-wrap {
  position: relative;
}
#toolbar-artist-search {
  font-family: var(--font);
  font-size: 13px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 7px 10px 7px 32px;
  width: 90px;
  box-sizing: border-box;
  outline: none;
  cursor: pointer;
  box-shadow: var(--card-shadow);
  transition: width 0.3s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.2s ease, box-shadow 0.2s ease;
}
#toolbar-artist-search:focus, #search-btn-wrap.open #toolbar-artist-search {
  width: 280px;
  cursor: text;
}
#search-btn-wrap.active #toolbar-artist-search {
  border-color: var(--connection-highlight);
}
#toolbar-artist-search::placeholder { color: var(--text-primary); }
#toolbar-artist-search:focus { border-color: var(--connection-highlight); }
#toolbar-artist-search:focus::placeholder { color: var(--text-tertiary); }
#toolbar-artist-search.filtered { border-color: var(--connection-highlight); padding-right: 28px; }
#toolbar-search-wrap .search-icon {
  position: absolute;
  left: 10px; top: 50%; transform: translateY(-50%);
  width: 13px; height: 13px;
  stroke: var(--text-primary); fill: none;
  stroke-width: 2; stroke-linecap: round;
  pointer-events: none;
}
#toolbar-artist-clear {
  position: absolute;
  right: 8px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px;
  border: none; background: none;
  cursor: pointer; color: var(--text-tertiary);
  font-size: 14px; line-height: 1; padding: 0;
  display: none;
}
#toolbar-artist-clear:hover { color: var(--text-primary); }
#toolbar-artist-search.filtered ~ #toolbar-artist-clear { display: block; }
#toolbar-artist-ac {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; width: 280px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  display: none;
  z-index: 210;
}
#toolbar-artist-ac.open { display: block; }
#toolbar-artist-ac .ac-section-header {
  font-family: var(--font);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  padding: 8px 14px 4px;
}

/* Help modal */
#help-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(42, 37, 32, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
#help-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
#help-modal {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(42, 37, 32, 0.15);
  padding: 32px;
  max-width: 620px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: translateY(12px) scale(0.97);
  transition: transform 0.25s ease;
}
#help-overlay.open #help-modal {
  transform: translateY(0) scale(1);
}
#help-modal h2 {
  font-family: var(--font);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}
#help-modal p {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 12px;
}
#help-modal p:last-child { margin-bottom: 0; }
#help-modal kbd {
  font-family: var(--font);
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 1px 6px;
}
.help-diagram {
  width: 130%;
  margin-top: 20px;
  margin-left: -15%;
  border-radius: 10px;
}

#help-modal .help-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: color 0.15s ease;
  line-height: 1;
}
#help-modal .help-close:hover { color: var(--text-primary); }

/* Mobile-only elements: hidden on desktop */
#mobile-help-btn, #mobile-help-panel, #mobile-search-wrap, #mobile-title, #mobile-mode-tabs { display: none; }

/* (debug-bar and filter-select moved into dev panel) */

/* ═══════════════════════════════════════════
   Mixcloud Mini-Player
   ═══════════════════════════════════════════ */
#sc-widget {
  width: 1px;
  height: 1px;
  border: 0;
  position: fixed;
  bottom: 0;
  left: 0;
  pointer-events: none;
  z-index: -1;
  clip: rect(0,0,0,0);
  overflow: hidden;
}
#sc-player-area { display: none; }

#mc-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: #1c1c1e;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  visibility: hidden;
}
#mc-player.visible {
  transform: translateY(0);
  visibility: visible;
}
#mc-player .mc-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
}
#mc-player .mc-label {
  font-family: var(--font);
  font-size: 10px;
  color: #aaa;
  white-space: nowrap;
  flex-shrink: 0;
}
#mc-player .mc-close {
  background: none;
  border: none;
  color: #888;
  font-size: 18px;
  cursor: pointer;
  padding: 0 4px;
  flex-shrink: 0;
  line-height: 1;
}
#mc-player .mc-close:hover { color: #fff; }
#mc-player iframe {
  width: 100%;
  height: 60px;
  border: 0;
}

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

@keyframes drawLine {
  to {
    stroke-dashoffset: 0;
  }
}

/* ═══════════════════════════════════════════
   Dev Panel (bottom-right)
   ═══════════════════════════════════════════ */
#dev-toggle {
  position: fixed;
  bottom: 12px;
  right: 12px;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  padding: 0;
  transition: transform 0.2s ease;
}
#dev-toggle:hover { transform: scale(1.1); }

#dev-panel {
  position: fixed;
  bottom: 56px;
  right: 12px;
  width: 280px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 16px;
  z-index: 1000;
  display: none;
  font-family: var(--font);
  font-size: 11px;
  color: var(--text-primary);
}
#dev-panel.open { display: block; }

#dev-panel h4 {
  margin: 0 0 8px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
}
#dev-panel h4:not(:first-child) {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--card-border);
}

.dev-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.dev-row .debug-id {
  font-size: 10px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: all;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
  padding: 5px 8px;
  background: var(--bg);
  border-radius: 6px;
  border: 1px solid var(--card-border);
}
.dev-row .debug-id:hover {
  color: var(--text-primary);
}

.dev-row input[type="text"] {
  font-family: var(--font);
  font-size: 11px;
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 5px 8px;
  flex: 1;
  min-width: 0;
  outline: none;
}
.dev-row input[type="text"]::placeholder { color: var(--text-tertiary); }
.dev-row input[type="text"]:focus { border-color: var(--connection-stroke); }

#freeze-btn {
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
  font-family: var(--font);
  font-size: 11px;
  color: var(--text-secondary);
  transition: color 0.15s ease;
  white-space: nowrap;
}
#freeze-btn:hover { color: var(--text-primary); }
#freeze-btn.frozen { border-color: var(--connection-highlight); color: var(--connection-highlight); }

#dev-panel select {
  font-family: var(--font);
  font-size: 11px;
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 5px 28px 5px 8px;
  width: 100%;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%236B6560' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  outline: none;
}

.tune-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.tune-row label {
  flex: 1;
  color: var(--text-secondary);
}
.tune-row input[type="range"] {
  width: 90px;
  accent-color: var(--text-primary);
}
.tune-row .tune-val {
  width: 36px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

/* Helper toast */
.helper-toast {
  position: fixed;
  top: 64px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: 12px 40px 12px 16px;
  box-shadow: 0 4px 20px rgba(42, 37, 32, 0.1);
  z-index: 500;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}
.helper-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.helper-toast .toast-close {
  position: absolute;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 16px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
}
.helper-toast .toast-close:hover { color: var(--text-primary); }

/* ═══════════════════════════════════════════
   Artist Search
   ═══════════════════════════════════════════ */
#artist-search-wrap {
  position: relative;
  z-index: 20;
}

#artist-search {
  font-family: var(--font);
  font-size: 11px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--bg);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 5px 8px 5px 28px;
  width: 100%;
  box-sizing: border-box;
  outline: none;
  transition: border-color 0.2s ease;
}

#artist-search::placeholder {
  color: var(--text-tertiary);
}

#artist-search:focus {
  border-color: var(--connection-stroke);
}

#artist-search-wrap .search-icon {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  stroke: var(--text-tertiary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: none;
}

#artist-autocomplete {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 0;
  width: 100%;
  max-height: 260px;
  overflow-y: auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 30px rgba(42, 37, 32, 0.12);
  display: none;
  z-index: 30;
}

#artist-autocomplete.open {
  display: block;
}

.ac-item {
  padding: 8px 14px;
  font-family: var(--font);
  font-size: 12px;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.1s ease;
}

.ac-item:hover,
.ac-item.active {
  background: rgba(42, 37, 32, 0.05);
}

.ac-item .ac-count {
  font-size: 10px;
  color: var(--text-tertiary);
  flex-shrink: 0;
  margin-left: 8px;
}

.ac-item .ac-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Active artist filter indicator */
#artist-search.filtered {
  border-color: var(--connection-highlight);
  padding-right: 24px;
}

#artist-clear {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-tertiary);
  font-size: 14px;
  line-height: 1;
  padding: 0;
  display: none;
}

#artist-clear:hover {
  color: var(--text-primary);
}

#artist-search.filtered ~ #artist-clear {
  display: block;
}

/* ═══════════════════════════════════════════
   DJ Search
   ═══════════════════════════════════════════ */
#dj-search-wrap {
  position: relative;
  z-index: 20;
}

#dj-search {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 7px 14px 7px 32px;
  width: 200px;
  box-shadow: var(--card-shadow);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, width 0.2s ease;
}

#dj-search::placeholder {
  color: #000;
  opacity: 1;
}

#dj-search:focus {
  border-color: var(--connection-stroke);
  box-shadow: var(--card-hover-shadow);
  width: 260px;
}

#dj-search-wrap .search-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  stroke: var(--text-tertiary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: none;
}

#dj-autocomplete {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  width: 260px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: 0 8px 30px rgba(42, 37, 32, 0.12);
  display: none;
  z-index: 30;
}

#dj-autocomplete.open { display: block; }
#dj-autocomplete .ac-item { padding: 8px 14px; font-family: var(--font); font-size: 12px; color: var(--text-primary); cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: background 0.1s ease; }
#dj-autocomplete .ac-item:hover, #dj-autocomplete .ac-item.active { background: rgba(42, 37, 32, 0.05); }

#dj-search.filtered {
  border-color: var(--connection-highlight);
  padding-right: 28px;
}

#dj-clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-tertiary);
  font-size: 14px;
  line-height: 1;
  padding: 0;
  display: none;
}

#dj-clear:hover { color: var(--text-primary); }
#dj-search.filtered ~ #dj-clear { display: block; }