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

:root {
  --bg:        #0f1117;
  --surface:   #1a1d27;
  --surface2:  #222636;
  --border:    #2a2d3e;
  --accent:    #6c63ff;
  --accent-dk: #5248d4;
  --danger:    #ef4444;
  --success:   #22c55e;
  --text:      #e8eaf0;
  --text-sub:  #9195a8;
  --sidebar-w: 190px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body { margin: 0; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.8s linear infinite; }

/* ── Layout ───────────────────────────────────────────────────── */
.app-shell {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ──────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 12px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px 20px;
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.3;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-sub);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  text-align: left;
}
.nav-item:hover { background: var(--surface2); color: var(--text); }
.nav-item.active { background: var(--accent); color: #fff; }

/* ── Main content ─────────────────────────────────────────────── */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  background: var(--bg);
}

.search-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 900px) {
  .search-layout { grid-template-columns: 1fr; }
}

/* ── Panels ───────────────────────────────────────────────────── */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.panel-full { width: 100%; }

.panel-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

/* ── Search form ──────────────────────────────────────────────── */
.search-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.search-input-wrap {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 10px;
  color: var(--text-sub);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 9px 12px 9px 36px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}
.search-input:focus { border-color: var(--accent); }

.source-select {
  padding: 9px 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}
.source-select:focus { border-color: var(--accent); }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-dk); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-download { width: 100%; justify-content: center; margin-top: 12px; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px;
  color: var(--text-sub);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.icon-btn:hover { background: var(--surface2); color: var(--text); }
.icon-btn.danger:hover { border-color: var(--danger); color: var(--danger); }
.icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Result lists (music search) ──────────────────────────────── */
.result-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 60vh;
  overflow-y: auto;
  padding-right: 4px;
}

.result-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.result-card:hover { background: var(--surface2); border-color: var(--border); }

.artwork-thumb {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.artwork-placeholder {
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
}

.result-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.result-title {
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.result-sub {
  font-size: 11px;
  color: var(--text-sub);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-num {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-sub);
  flex-shrink: 0;
}

/* ── YouTube panel ────────────────────────────────────────────── */
.yt-panel { display: flex; flex-direction: column; gap: 14px; }

.selected-track-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--surface2);
  border-radius: 8px;
}

.artwork-md {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.selected-track-name { font-weight: 700; font-size: 13px; }
.selected-track-sub  { font-size: 11px; color: var(--text-sub); margin-top: 2px; }

.section-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.yt-result-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.yt-result-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.yt-result-card:hover { background: var(--surface2); }
.yt-result-card.selected { border-color: var(--accent); background: rgba(108,99,255,0.08); }

.yt-thumb-wrap { position: relative; flex-shrink: 0; }
.yt-thumb { width: 80px; height: 45px; object-fit: cover; border-radius: 4px; display: block; }
.yt-play-overlay {
  position: absolute; inset: 0; margin: auto;
  color: rgba(255,255,255,0.85);
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
  pointer-events: none;
}

.yt-info { flex: 1; min-width: 0; }
.yt-title { display: block; font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.yt-sub   { display: block; font-size: 11px; color: var(--text-sub); margin-top: 2px; }

.check-icon { color: var(--accent); flex-shrink: 0; }

.yt-player-wrap {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.yt-player { width: 100%; height: 100%; border: none; display: block; }

.download-controls { display: flex; flex-direction: column; gap: 10px; }

.progress-wrap { display: flex; flex-direction: column; gap: 4px; }
.progress-bar {
  height: 6px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 99px;
  transition: width 0.4s ease;
}
.progress-label { font-size: 11px; color: var(--text-sub); }

/* ── Status messages ──────────────────────────────────────────── */
.error-msg {
  font-size: 12px;
  color: var(--danger);
  padding: 8px 10px;
  background: rgba(239,68,68,0.1);
  border-radius: 6px;
}

.success-msg {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--success);
  padding: 10px 12px;
  background: rgba(34,197,94,0.1);
  border-radius: 6px;
}

.panel-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 24px;
  color: var(--text-sub);
  font-size: 13px;
}

/* ── Library ──────────────────────────────────────────────────── */
.library-layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  min-height: 400px;
}

.lib-col {
  background: var(--surface);
  display: flex;
  flex-direction: column;
}

.lib-col-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-sub);
}

.lib-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
}

.lib-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
  min-width: 0;
}
.lib-item:hover { background: var(--surface2); }
.lib-item.active { background: rgba(108,99,255,0.12); }

.lib-item-icon { color: var(--text-sub); flex-shrink: 0; }
.lib-item-label {
  flex: 1;
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.lib-chevron { color: var(--text-sub); flex-shrink: 0; }

.lib-item-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.lib-track { cursor: default; }
.lib-track-info { flex: 1; display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lib-track-size  { font-size: 10px; color: var(--text-sub); }

.lib-empty-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 100%;
  color: var(--text-sub);
  font-size: 12px;
  padding: 24px;
  text-align: center;
}

.library-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 60px 24px;
  color: var(--text-sub);
  text-align: center;
}
.muted-icon { color: var(--border); }
.muted-text { font-size: 12px; }

/* ── Scrollbar styling ────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-sub); }