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

:root {
  --bg:        #0d0d0d;
  --bg2:       #141414;
  --bg3:       #1c1c1c;
  --border:    #2a2a2a;
  --border2:   #383838;
  --accent:    #e87c00;
  --accent-dim:#7a4000;
  --text:      #c8c8c8;
  --text-dim:  #999;
  --text-hdr:  #e0e0e0;
  --green:     #2eb85c;
  --red:       #c0392b;
  --font-mono: 'Courier New', Courier, monospace;
  --font-ui:   'Segoe UI', system-ui, sans-serif;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font-ui); font-size: 13px; }

/* ── Mobile warning ───────────────────────────────────────────────────────── */
#mobile-warning {
  display: none;
  background: #5a3000;
  color: #ffcc80;
  text-align: center;
  padding: 8px 16px;
  font-size: 12px;
  border-bottom: 1px solid var(--accent-dim);
}
@media (max-width: 1023px) { #mobile-warning { display: block; } }

/* ── Nav ──────────────────────────────────────────────────────────────────── */
#main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 16px;
  height: 44px;
  background: var(--bg2);
  border-bottom: 1px solid var(--accent-dim);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-brand {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: bold;
  font-size: 14px;
  letter-spacing: 2px;
  margin-right: 12px;
}
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 3px;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--text); background: var(--bg3); }
.nav-links a.active { color: var(--accent); border-bottom: 2px solid var(--accent); }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text);
  padding: 5px 12px;
  font-size: 11px;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { background: var(--border); border-color: var(--accent); color: var(--accent); }
.btn:active:not(:disabled) { background: var(--accent-dim); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }
.btn-danger { border-color: #6b2020; color: #e05050; }
.btn-danger:hover:not(:disabled) { background: #3a1515; border-color: var(--red); color: var(--red); }
.btn-cancel { border-color: #444; color: var(--text-dim); }
.btn-lg { padding: 8px 20px; font-size: 12px; }

/* ── Inputs / Selects ─────────────────────────────────────────────────────── */
input[type="number"], input[type="text"], select {
  background: var(--bg);
  border: 1px solid var(--border2);
  color: var(--text);
  padding: 4px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: 2px;
  outline: none;
}
input[type="number"]:focus, input[type="text"]:focus, select:focus {
  border-color: var(--accent);
}
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border2);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
}

/* ── Toggle switch ────────────────────────────────────────────────────────── */
.toggle-switch { position: relative; display: inline-block; width: 36px; height: 18px; cursor: pointer; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--border2);
  border-radius: 18px;
  transition: background 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  left: 3px; top: 3px;
  background: var(--text-dim);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}
.toggle-switch input:checked + .toggle-slider { background: var(--accent-dim); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(18px); background: var(--accent); }

/* ── Modal ────────────────────────────────────────────────────────────────── */
.modal {
  display: flex;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal-box {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-top: 2px solid var(--accent);
  padding: 24px 28px;
  min-width: 320px;
  border-radius: 3px;
}
.modal-box h3 { color: var(--accent); font-size: 14px; letter-spacing: 2px; margin-bottom: 16px; }
.modal-box label { display: block; font-size: 11px; color: var(--text-dim); margin-bottom: 6px; letter-spacing: 1px; }
.modal-box input[type="text"] { width: 100%; margin-bottom: 16px; padding: 7px 10px; }
.modal-buttons { display: flex; gap: 8px; justify-content: flex-end; }

/* ── Spinner ──────────────────────────────────────────────────────────────── */
.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ══════════════════════════════════════════════════════════════════════════ */
/* ── Generator page ───────────────────────────────────────────────────────── */

.generator-page #page-content {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 44px);
  overflow: hidden;
}

#global-controls {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 8px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.gc-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.gc-group label {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 1px;
  white-space: nowrap;
}
#g-duration { width: 120px; }
#g-bpm { width: 64px; }
#g-key { width: 70px; }
#g-scale { width: 130px; }

#tracks-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
  gap: 1px;
  background: var(--border);
}

.track-panel {
  background: var(--bg2);
  display: flex;
  flex-direction: row;
  flex-shrink: 0;
}
.track-panel.disabled { opacity: 0.5; }

/* Left sidebar — controls, always visible */
.track-left {
  width: 210px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.track-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px 6px;
  background: var(--bg3);
  border-bottom: 2px solid var(--accent-dim);
  flex-shrink: 0;
}
.track-name {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1.5px;
  font-weight: bold;
}

.mode-toggle {
  display: flex;
  gap: 0;
  margin: 6px 8px;
  flex-shrink: 0;
}
.mode-btn {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border2);
  color: var(--text-dim);
  padding: 4px 0;
  font-size: 10px;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  cursor: pointer;
}
.mode-btn:first-child { border-radius: 2px 0 0 2px; }
.mode-btn:last-child { border-radius: 0 2px 2px 0; border-left: none; }
.mode-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

.track-controls {
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  flex-shrink: 0;
}
.ctrl-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.ctrl-row label {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 1px;
  display: flex;
  justify-content: space-between;
}
.ctrl-row select, .ctrl-row input[type="number"] { width: 100%; }
.ctrl-row .seed-input { width: calc(100% - 32px); }
.btn-rand-seed {
  width: 26px;
  padding: 4px 0;
  font-size: 14px;
  background: var(--bg);
  border: 1px solid var(--border2);
  color: var(--text-dim);
  cursor: pointer;
  border-radius: 2px;
  vertical-align: middle;
}
.btn-rand-seed:hover { color: var(--accent); border-color: var(--accent); }
.ctrl-row-seed { display: flex; gap: 4px; align-items: center; }

/* Compose grid — right panel, takes all remaining width */
.compose-grid {
  flex: 1;
  overflow: auto;
  padding: 6px 10px;
  min-width: 0;
}
.compose-grid-inner {
  display: grid;
  gap: 2px;
  width: 100%;
}
.grid-row { display: contents; }
.grid-row-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-dim);
  padding: 0 6px 0 0;
  white-space: nowrap;
  align-self: center;
  grid-column: 1;
}
.grid-step {
  width: 100%;
  height: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  cursor: pointer;
  border-radius: 1px;
  transition: background 0.1s;
  min-width: 14px;
}
.grid-step.active { background: var(--accent); border-color: var(--accent); }
.grid-step.beat-marker { border-left-color: var(--border2); }
.grid-step.bar-marker { border-left: 2px solid var(--accent-dim); }
.grid-step:hover:not(.active) { background: var(--border2); }
.grid-step-header {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--text-dim);
  text-align: center;
  padding: 1px 0;
  height: 14px;
}

.track-status {
  padding: 4px 8px;
  flex-shrink: 0;
  min-height: 22px;
}
.status-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
}
.status-badge.loaded { color: var(--green); }
.status-badge.generating { color: var(--accent); }
.status-badge.error { color: var(--red); }
.status-badge.saved { color: #80c0ff; }

.track-buttons {
  display: flex;
  gap: 4px;
  padding: 5px 8px;
  background: var(--bg3);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  margin-top: auto;
}
.track-buttons .btn { flex: 1; padding: 4px 2px; font-size: 10px; }
.btn-generate:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn-play:hover:not(:disabled) { border-color: var(--green); color: var(--green); }
.btn-save:hover:not(:disabled) { border-color: #80c0ff; color: #80c0ff; }

#global-bottom-bar {
  display: flex;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg3);
  border-top: 1px solid var(--accent-dim);
  align-items: center;
  flex-shrink: 0;
}

#loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
#loading-msg { font-family: var(--font-mono); color: var(--accent); letter-spacing: 2px; }

/* ══════════════════════════════════════════════════════════════════════════ */
/* ── Library page ─────────────────────────────────────────────────────────── */

#library-page { padding: 0; }

#filter-bar {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 12px 20px;
  padding: 12px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.filter-group { display: flex; flex-direction: column; gap: 4px; }
.filter-group label { font-size: 10px; font-family: var(--font-mono); color: var(--text-dim); letter-spacing: 1px; }
.filter-group select { width: 140px; }
.filter-actions { flex-direction: row; align-items: flex-end; gap: 6px; }

#lib-player-bar {
  background: var(--bg3);
  border-bottom: 1px solid var(--accent-dim);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}
#lib-player-name { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }
#lib-player-controls { display: flex; align-items: center; gap: 12px; flex: 1; }
#lib-progress-wrapper { display: flex; align-items: center; gap: 8px; flex: 1; }
#lib-progress-bar {
  flex: 1;
  height: 4px;
  background: var(--border2);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}
#lib-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s linear;
}
#lib-time { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); white-space: nowrap; }

#clip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
  padding: 16px;
}
#clip-grid-empty { color: var(--text-dim); padding: 16px; font-family: var(--font-mono); }

.clip-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.clip-card:hover { border-color: var(--border2); }
.clip-card.selected { border-color: var(--accent); }
.clip-card-name { font-family: var(--font-mono); font-size: 13px; color: var(--text-hdr); margin-bottom: 8px; word-break: break-all; }
.clip-card-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 3px 12px; margin-bottom: 10px; }
.clip-meta-item { font-size: 11px; color: var(--text-dim); }
.clip-meta-item strong { color: var(--text); }
.clip-card-seed { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); margin-bottom: 8px; }
.clip-card-buttons { display: flex; gap: 6px; }

/* Seed history */
#seed-history-section {
  margin: 16px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px;
}
#seed-history-section summary {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}
#seed-history-section summary:hover { color: var(--text); }
#seed-history-inner { padding: 12px 14px; }
#seed-history-table-wrapper { overflow-x: auto; }
#seed-history-table { width: 100%; border-collapse: collapse; font-size: 11px; font-family: var(--font-mono); }
#seed-history-table th { color: var(--text-dim); text-align: left; padding: 4px 8px; border-bottom: 1px solid var(--border); letter-spacing: 1px; }
#seed-history-table td { padding: 4px 8px; border-bottom: 1px solid var(--border); color: var(--text); vertical-align: middle; }
#seed-history-table tr:hover td { background: var(--bg3); }
#seed-history-pagination { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
#seed-page-info { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); }

/* ══════════════════════════════════════════════════════════════════════════ */
/* ── Songs page ───────────────────────────────────────────────────────────── */

#songs-page { padding: 12px 16px; display: flex; flex-direction: column; gap: 12px; }

#section-builder {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px 14px;
}
#section-builder-label { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); letter-spacing: 1px; }
.btn-section { font-size: 11px; padding: 5px 10px; }

#section-pills-row {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 8px 12px;
  min-height: 42px;
}
.section-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.section-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg3);
  border: 1px solid var(--accent-dim);
  border-radius: 3px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  cursor: grab;
  user-select: none;
}
.section-pill.drag-over { border-color: var(--accent); background: var(--accent-dim); }
.pill-delete {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  padding: 0 0 0 2px;
}
.pill-delete:hover { color: var(--red); }

#arrangement-wrapper { overflow-x: auto; }
#arrangement-grid-container { min-width: 400px; }
#arrangement-grid { width: 100%; border-collapse: collapse; font-size: 12px; }
#arrangement-grid th, #arrangement-grid td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  vertical-align: middle;
}
#arrangement-grid th { background: var(--bg3); color: var(--text-dim); font-family: var(--font-mono); font-size: 11px; letter-spacing: 1px; }
.row-label-header { width: 110px; }
.row-label { font-family: var(--font-mono); font-size: 11px; color: var(--accent); background: var(--bg3); white-space: nowrap; }
.grid-clip-cell select { width: 100%; max-width: 200px; }

#songs-bottom-bar {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  flex-wrap: wrap;
}
#render-status { display: flex; align-items: center; gap: 12px; padding: 8px 0; font-family: var(--font-mono); color: var(--accent); }
#render-result { padding: 8px 0; font-family: var(--font-mono); }
#render-result a { color: var(--accent); }

/* ══════════════════════════════════════════════════════════════════════════ */
/* ── Songs library page ───────────────────────────────────────────────────── */

#songs-library-page { padding: 16px; }
#songs-library-page h2 {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 16px;
}
#songs-list { display: flex; flex-direction: column; gap: 10px; }
#songs-list-empty { font-family: var(--font-mono); color: var(--text-dim); padding: 16px 0; }
.song-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 12px 16px;
}
.song-card-info { display: flex; flex-direction: column; gap: 4px; }
.song-name { font-family: var(--font-mono); font-size: 13px; color: var(--text-hdr); }
.song-date { font-size: 11px; color: var(--text-dim); }
.song-card-buttons { display: flex; gap: 8px; align-items: center; }
.song-card-buttons a.btn { text-decoration: none; }