:root {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --sidebar-width: 210px;
  --accent: #1db954;
  --accent-hover: #1aa34a;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --bg-subtle: #f8fafc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 28px 32px 28px calc(var(--sidebar-width) + 32px);
  background: #f9fafb;
  color: var(--text-primary);
  min-height: 100vh;
}

/* ── Sidebar ── */
.tools-flyout {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--sidebar-width);
  background: #1e293b;
  color: #e2e8f0;
  box-shadow: 2px 0 8px rgba(0,0,0,0.12);
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  padding: 22px 18px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.4px;
  color: #f1f5f9;
}

.user-info {
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.user-name {
  display: block;
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.logout-link {
  font-size: 12px;
  color: #64748b;
  text-decoration: none;
}
.logout-link:hover { color: #94a3b8; }

.tools-title {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #94a3b8;
  padding: 18px 18px 8px;
}
.tools-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 8px;
}
.tool-item {
  text-align: left;
  background: transparent;
  color: #cbd5e1;
  border: none;
  border-left: 3px solid transparent;
  border-radius: 0 6px 6px 0;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.15s ease;
  width: 100%;
}
.tool-item:hover { background: rgba(255,255,255,0.06); color: #f1f5f9; }
.tool-item.active {
  background: rgba(29,185,84,0.14);
  border-left-color: var(--accent);
  color: #f1f5f9;
  font-weight: 500;
}

/* ── Main content ── */
.tool-section.hidden { display: none; }

.tool-header {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 600;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}

/* ── Login screen ── */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
}
.login-card {
  text-align: center;
  background: #fff;
  border-radius: 14px;
  padding: 52px 44px;
  box-shadow: 0 4px 28px rgba(0,0,0,0.07);
  max-width: 380px;
  width: 100%;
}
.login-logo {
  font-size: 52px;
  margin-bottom: 12px;
  color: var(--accent);
}
.login-card h1 {
  margin: 0 0 10px;
  font-size: 26px;
  color: var(--text-primary);
}
.login-card p {
  margin: 0 0 30px;
  color: var(--text-secondary);
  line-height: 1.5;
}
.btn-spotify {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 13px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.3px;
  transition: background 0.15s;
}
.btn-spotify:hover { background: var(--accent-hover); }

/* ── Buttons ── */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 18px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: default; }

.btn-secondary {
  background: #fff;
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 18px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.15s;
}
.btn-secondary:hover { background: var(--bg-subtle); }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s;
}
.btn-danger:hover { background: var(--danger-hover); }

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 14px;
  padding: 0;
  text-decoration: none;
}
.btn-link:hover { text-decoration: underline; }

/* ── Controls row ── */
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-secondary);
}
.summary-text { font-size: 13px; color: var(--text-secondary); }

/* ── Action bar (bulk operations) ── */
.action-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding: 10px 14px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 6px;
}
.action-bar.hidden { display: none; }
.selected-count { font-size: 13px; color: var(--text-secondary); margin-left: auto; }

/* ── Status messages ── */
.loading-msg {
  padding: 24px 0;
  color: var(--text-secondary);
  font-size: 14px;
}
.loading-msg.hidden, .error-msg.hidden { display: none; }
.error-msg {
  padding: 12px 14px;
  color: var(--danger);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 6px;
  font-size: 14px;
  margin-bottom: 12px;
}

/* ── Data table ── */
.table-scroll { width: 100%; overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table.hidden { display: none; }

.data-table thead th {
  background: var(--bg-subtle);
  border-bottom: 2px solid var(--border);
  padding: 9px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
  white-space: nowrap;
}
.data-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.08s;
}
.data-table tbody tr:hover { background: var(--bg-subtle); }
.data-table td { padding: 8px 12px; vertical-align: middle; }

/* Duplicate rows */
.row-duplicate { background: #fffbeb !important; }
.row-duplicate:hover { background: #fef9c3 !important; }
.badge-dup {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  background: #f59e0b;
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

/* ── Create playlist form ── */
.form-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px 24px;
  margin-bottom: 20px;
  max-width: 480px;
}
.form-card.hidden { display: none; }
.form-card h3 { margin: 0 0 16px; font-size: 15px; }
.form-card label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
}
.form-card input[type="text"] {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  width: 100%;
  color: var(--text-primary);
}
.form-card input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29,185,84,0.15);
}
.checkbox-row {
  flex-direction: row !important;
  align-items: center;
  gap: 8px !important;
}
.form-actions { display: flex; gap: 8px; margin-top: 16px; }

/* ── Playlists grid ── */
.playlists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 6px;
}
.playlist-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  cursor: pointer;
  transition: all 0.15s;
}
.playlist-card:hover {
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
  border-color: #cbd5e1;
  transform: translateY(-1px);
}
.playlist-cover {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 10px;
  background: #e2e8f0;
  display: block;
}
.playlist-cover-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 4px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: #64748b;
}
.playlist-card-name {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.playlist-card-meta { font-size: 12px; color: var(--text-secondary); }

/* ── Playlist detail ── */
.detail-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.detail-header h3 { margin: 0; font-size: 17px; }

.track-num { color: #94a3b8; font-size: 13px; }

/* ── Column filter row ── */
.filter-row th {
  padding: 4px 8px 6px;
  background: var(--bg-subtle);
  border-bottom: 2px solid var(--border);
}
.filter-input {
  width: 100%;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-primary);
  background: #fff;
  box-sizing: border-box;
}
.filter-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(29,185,84,0.15);
}
.genre-cell {
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-secondary);
  font-size: 12px;
}

/* ── Add-to-playlist button (saved songs rows) ── */
.btn-add-to-playlist {
  background: none;
  border: 1px solid #cbd5e1;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  line-height: 1;
  font-size: 15px;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.12s;
}
.btn-add-to-playlist:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-add-to-playlist:disabled { opacity: 0.4; cursor: default; }

/* ── Playlist picker dropdown ── */
.playlist-picker {
  position: absolute;
  z-index: 9999;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.13);
  min-width: 200px;
  max-width: 300px;
  max-height: 260px;
  overflow-y: auto;
}
.picker-item {
  padding: 9px 14px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.08s;
}
.picker-item:hover { background: var(--bg-subtle); }
.picker-loading { padding: 12px 14px; font-size: 13px; color: var(--text-secondary); }

/* ── Remove track button ── */
.btn-remove-track {
  background: none;
  border: none;
  color: #cbd5e1;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all 0.12s;
}
.btn-remove-track:hover { background: #fef2f2; color: var(--danger); }
.btn-remove-track:disabled { opacity: 0.3; cursor: default; }

/* ── Suggest Songs panel ── */
.suggest-panel { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border); }
.suggest-panel.hidden { display: none; }

.suggest-toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 0;
}

#suggest-form-area { margin-top: 14px; }
#suggest-form-area.hidden { display: none; }

.suggest-form {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.suggest-form input[type="text"] {
  flex: 1;
  min-width: 220px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-primary);
}
.suggest-form input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29,185,84,0.15);
}
.suggest-form input[type="number"] {
  width: 64px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-primary);
  text-align: center;
}

.suggest-results-table { margin-top: 4px; }
.suggest-row-existing { opacity: 0.45; }
.already-label {
  font-size: 10px;
  color: #94a3b8;
  font-style: italic;
  margin-left: 4px;
}

.suggest-add-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}