:root {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --sidebar-width: 210px;
  --topbar-h: 52px;
  --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);
}

/* ── Quick search + genre status ── */
.quick-search {
  display: none;              /* desktop uses the per-column filter row */
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 16px;            /* 16px stops iOS zooming the page on focus */
  color: var(--text-primary);
  background: #fff;
}
.quick-search:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29,185,84,0.15);
}

.genre-status {
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 11px;
  margin-bottom: 10px;
}
.genre-status.hidden { display: none; }

/* ── Mobile top bar + drawer (desktop: hidden) ── */
.topbar { display: none; }
.nav-backdrop { display: none; }

/* ── Accessible focus ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Wider screens: let the table breathe ── */
@media (min-width: 1400px) {
  body { padding-right: 48px; }
  .genre-cell { max-width: 220px; }
}

/* ══ Mobile / tablet ══════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  body {
    padding: calc(var(--topbar-h) + 16px) 14px calc(24px + env(safe-area-inset-bottom));
  }

  .topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 14px;
    background: #1e293b;
    color: #f1f5f9;
    z-index: 1001;
    box-shadow: 0 1px 6px rgba(0,0,0,0.18);
  }
  .topbar-title { font-size: 16px; font-weight: 700; letter-spacing: 0.3px; }

  .nav-toggle {
    width: 40px; height: 40px;
    margin-left: -8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span {
    display: block;
    height: 2px;
    background: #f1f5f9;
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Sidebar slides in instead of permanently eating the screen */
  .tools-flyout {
    width: 260px;
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    padding-top: env(safe-area-inset-top);
  }
  .tools-flyout.open { transform: translateX(0); }
  /* The top bar already shows the brand, so the drawer's own header is dead
     space sitting behind it. */
  .sidebar-brand { display: none; }
  .user-info { padding-top: calc(var(--topbar-h) + 12px); }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.5);
    z-index: 999;
  }
  .nav-backdrop[hidden] { display: none; }
  body.nav-open { overflow: hidden; }

  .tool-item { padding: 13px 14px; font-size: 15px; }

  /* One search box beats five cramped ones on a phone */
  .quick-search { display: block; }
  .filter-row { display: none; }

  /* Drop the columns least useful on a narrow screen */
  .col-album, .col-duration { display: none; }
  .data-table:not(.dup-view) .col-flag { display: none; }

  /* Checkboxes outside the table need thumb-sized targets too */
  .checkbox-label input[type="checkbox"] { width: 20px; height: 20px; }
  .logout-link { display: inline-block; padding: 8px 0; }

  .tool-header { font-size: 18px; margin-bottom: 14px; }

  .controls { gap: 10px; }
  .controls .btn-primary,
  .controls .btn-secondary { min-height: 44px; padding: 10px 18px; }
  .checkbox-label { min-height: 44px; }

  /* Bulk actions stack instead of overflowing */
  .action-bar { flex-wrap: wrap; gap: 8px; }
  .action-bar .btn-danger,
  .action-bar .btn-secondary { flex: 1 1 auto; min-height: 44px; }
  .selected-count { margin-left: 0; flex-basis: 100%; }

  /* Bigger tap targets in the table */
  .data-table { font-size: 13px; }
  .data-table td { padding: 10px 8px; }
  .data-table thead th { padding: 8px; }
  .data-table input[type="checkbox"] { width: 22px; height: 22px; }
  .btn-add-to-playlist { width: 32px; height: 32px; font-size: 18px; }
  .btn-remove-track { font-size: 22px; padding: 6px 10px; }

  .genre-cell { max-width: 110px; }

  /* Scroll the table sideways without dragging the whole page with it */
  .table-scroll {
    -webkit-overflow-scrolling: touch;
    margin: 0 -14px;
    padding: 0 14px;
  }

  .playlists-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
  .form-card { padding: 16px; }
  .suggest-form input[type="text"] { min-width: 0; flex: 1 1 100%; }
  .detail-header { flex-wrap: wrap; gap: 8px; }
  .login-card { padding: 36px 24px; }
}

@media (max-width: 420px) {
  .col-added { display: none; }
  .genre-cell { max-width: 88px; }
}