@font-face {
  font-family: 'x3270';
  src: url('https://cdn.jsdelivr.net/gh/rbanffy/3270font@v3.0.1/woff/3270-Regular.woff2') format('woff2'),
       url('https://cdn.jsdelivr.net/gh/rbanffy/3270font@v3.0.1/woff/3270-Regular.woff') format('woff');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #1e1e2e;
  --bg-sidebar: #181825;
  --bg-toolbar: #11111b;
  --text: #cdd6f4;
  --text-muted: #6c7086;
  --accent: #89b4fa;
  --accent-hover: #b4d0fb;
  --border: #313244;
  --song-hover: #313244;
  --song-active: #45475a;
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  color-scheme: dark;
}

/* ── Dark scrollbars ── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-sidebar);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

::-webkit-scrollbar-corner {
  background: var(--bg-sidebar);
}

#app {
  display: flex;
  height: 100vh;
}

/* ── Sidebar ── */
#sidebar {
  width: 260px;
  min-width: 200px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#sidebar h2 {
  padding: 16px 20px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

#song-filter {
  padding: 8px 12px;
  margin: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  outline: none;
}

#song-filter:focus {
  border-color: var(--accent);
}

#song-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
  outline: none;
}

#song-list li {
  padding: 12px 20px;
  cursor: pointer;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

#song-list li.folder-header {
  padding: 10px 20px 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: none;
  user-select: none;
}

#song-list li.folder-header:hover {
  background: var(--song-hover);
}

#song-list li.folder-header.nav-highlight {
  background: var(--song-hover);
  color: var(--accent);
}

.folder-arrow {
  display: inline-block;
  width: 1em;
  font-size: 10px;
}

#song-list li.in-folder {
  padding-left: 32px;
}

#song-list li:hover {
  background: var(--song-hover);
}

#song-list li.active {
  background: var(--song-active);
  color: var(--accent);
  font-weight: 600;
}

#sidebar-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding: 6px 10px;
}

#sidebar-left {
  display: flex;
  align-items: center;
  gap: 2px;
}

#sidebar-footer button {
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 6px 10px;
  transition: color 0.15s;
}

#sidebar-footer #reset-btn,
#sidebar-footer #play-btn {
  color: var(--accent);
  font-size: 16px;
}

#sidebar-footer #reset-btn:hover,
#sidebar-footer #play-btn:hover {
  color: var(--accent-hover);
}

#sidebar-footer #play-btn.playing {
  color: #f38ba8;
}

#sidebar-footer #play-btn.playing:hover {
  color: #f5a0b8;
}

#about-btn {
  color: var(--text-muted);
  font-size: 13px;
}

#about-btn:hover {
  color: var(--accent);
}

/* ── Main panel ── */
#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#pattern-display {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
}

#pattern-display canvas,
#pattern-display svg {
  max-width: 100% !important;
  max-height: 100% !important;
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
}

/* Fallback: hide any canvas that Hydra appends to body before the observer moves it */
body > canvas {
  display: none !important;
}

#editor {
  flex: 1 1 0;
  min-height: 0;
  overflow: hidden;
}

#editor .cm-editor {
  height: 100%;
  display: flex;
  flex-direction: column;
}

#editor .cm-editor .cm-scroller {
  flex: 1 1 0;
  min-height: 0;
}

/* ── Toolbar ── */
#toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 20px;
  background: var(--bg-toolbar);
  border-top: 1px solid var(--border);
}

#toolbar button {
  border: none;
  background: transparent;
  color: var(--accent);
  font-size: 14px;
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.15s;
}

#toolbar button:hover {
  color: var(--accent-hover);
}

#status {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}

#progress {
  flex: 1;
  min-width: 60px;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
  background: transparent;
}

#progress::-webkit-slider-runnable-track {
  background: var(--border);
}

#progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ffffff;
  border: none;
  box-shadow: -100vw 100px 4px 100vw var(--accent);
}

#progress::-moz-range-track {
  background: var(--border);
  height: 100%;
}

#progress::-moz-range-thumb {
  -moz-appearance: none;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  box-shadow: -100vw 100px 4px 100vw var(--accent);
}

#elapsed {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  min-width: 3.5em;
  text-align: right;
}

/* ── Mobile layout ── */
@media (max-width: 768px) {
  #main {
    display: none !important;
  }

  #sidebar {
    width: 100% !important;
    min-width: 0 !important;
    border-right: none !important;
  }

  #about-btn {
    display: none !important;
  }

  #sidebar h2 {
    padding: 12px 16px;
  }

  #song-filter {
    margin: 6px 10px;
  }

  #song-list li {
    padding: 14px 16px;
    font-size: 15px;
    -webkit-tap-highlight-color: transparent;
  }

  #song-list li.in-folder {
    padding-left: 28px;
  }

  #song-list li.folder-header {
    padding: 10px 16px 6px;
  }

  #sidebar-footer {
    padding: 8px 10px;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    gap: 6px;
  }

  #sidebar-left {
    flex: 1;
    gap: 6px;
  }

  /* Progress slider & elapsed when moved into sidebar-left */
  #sidebar-left #progress {
    flex: 1;
    min-width: 0;
    height: 10px;
    border-radius: 5px;
  }

  #sidebar-left #elapsed {
    font-size: 12px;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums;
    min-width: 3em;
    text-align: right;
  }
}