:root {
  --sidebar-bg: #1e1e2e;
  --sidebar-text: #cdd6f4;
  --sidebar-active: #89b4fa;
  --bg: #f5f5f5;
  --card-bg: #fff;
  --text: #1e1e2e;
  --text-muted: #6c7086;
  --border: #e0e0e0;
  --primary: #89b4fa;
  --success: #a6e3a1;
  --danger: #f38ba8;
  --warning: #fab387;
  --info: #74c7ec;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Layout */
.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 200px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 20px 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-logo {
  padding: 0 16px 18px;
  font-size: 17px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 12px;
}

.sidebar-nav { flex: 1; }

.sidebar-nav a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 13px;
  transition: background 0.2s;
}

.sidebar-nav a { position: relative; }

.nav-dot {
  display: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  flex-shrink: 0;
}

.sidebar-nav a:hover { background: rgba(255,255,255,0.08); }
.sidebar-nav a.active {
  background: rgba(137,180,250,0.15);
  color: var(--sidebar-active);
  border-right: 3px solid var(--sidebar-active);
}

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer button {
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--sidebar-text);
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  width: 100%;
}

.sidebar-footer button:hover { background: rgba(255,255,255,0.08); }

.main {
  margin-left: 200px;
  flex: 1;
  padding: 20px 24px;
  max-width: 1060px;
  min-height: 100vh;
  transition: opacity 0.15s ease;
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 14px;
}

/* Cards Grid */
.stats-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  border-left: 4px solid var(--primary);
}

.stat-card.success { border-left-color: var(--success); }
.stat-card.danger { border-left-color: var(--danger); }
.stat-card.warning { border-left-color: var(--warning); }
.stat-card.info { border-left-color: var(--info); }

.stat-card .label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-card .value {
  font-size: 22px;
  font-weight: 700;
  margin-top: 2px;
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}

.chart-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.chart-card h3 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-muted);
}

/* Table */
.table-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  gap: 12px;
}

.search-input {
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  width: 260px;
  outline: none;
}

.search-input:focus { border-color: var(--primary); }

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 8px 10px;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

tr:hover td { background: rgba(0,0,0,0.02); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.badge-green { background: #dcfce7; color: #166534; }
.badge-red { background: #fee2e2; color: #991b1b; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-gray { background: #f3f4f6; color: #4b5563; }

.btn {
  padding: 5px 12px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.85; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #1e1e2e; }
.btn-sm { padding: 4px 10px; font-size: 11px; }

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  font-size: 13px;
}

.pagination button {
  padding: 5px 12px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}

.pagination button:disabled { opacity: 0.4; cursor: default; }

/* Login */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--sidebar-bg);
}

.login-card {
  background: var(--card-bg);
  padding: 36px;
  border-radius: 14px;
  width: 340px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.login-card h1 {
  font-size: 20px;
  margin-bottom: 6px;
  text-align: center;
}

.login-card p {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-muted);
}

.form-group input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  outline: none;
}

.form-group input:focus { border-color: var(--primary); }

.login-btn {
  width: 100%;
  padding: 10px;
  background: var(--primary);
  color: #1e1e2e;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 8px;
}

.login-btn:hover { opacity: 0.9; }

.login-error {
  color: var(--danger);
  font-size: 13px;
  text-align: center;
  margin-top: 10px;
  display: none;
}

.login-secondary-form[hidden] {
  display: none;
}

.login-switch {
  margin-top: 14px;
  text-align: center;
}

.login-switch button {
  border: 0;
  background: transparent;
  color: var(--primary);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 6px;
}

.login-switch button:hover {
  text-decoration: underline;
}

/* Detail modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px;
  width: 460px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.modal h2 { font-size: 17px; margin-bottom: 14px; }

.modal-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.modal-row .label { color: var(--text-muted); }

.modal-close {
  margin-top: 14px;
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border);
  background: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}

/* Loading */
.loading {
  text-align: center;
  padding: 30px;
  color: var(--text-muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .charts-grid { grid-template-columns: 1fr; }
  .stats-cards { grid-template-columns: repeat(2, 1fr); }
}

/* Date filter */
.date-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.date-filter label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.date-filter select {
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--card-bg);
  cursor: pointer;
  outline: none;
}

.date-filter select:focus { border-color: var(--primary); }

/* Progress bar for conversion rates */
.progress-bar {
  background: var(--border);
  border-radius: 4px;
  height: 8px;
  width: 100%;
  min-width: 80px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.progress-fill.best { background: var(--success); }

.highlight-row td { background: rgba(166,227,161,0.08); }

/* Source cell with icon + description */
.source-cell {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.source-icon {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.source-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.source-desc {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
  line-height: 1.3;
}

.stat-card .value.small { font-size: 16px; }

/* Settings page */
.settings-card {
  background: var(--card-bg);
  border-radius: 8px;
  padding: 10px 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.settings-section {
  padding-bottom: 4px;
  margin-bottom: 4px;
}

.settings-section:last-of-type {
  margin-bottom: 0;
  padding-bottom: 0;
}

.settings-section h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}

.settings-card .form-group {
  margin-bottom: 6px;
}

.settings-card .form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 3px;
  color: var(--text-muted);
}

.ai-settings-page .settings-card .form-group {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  align-items: start;
  gap: 2px 12px;
}

.ai-settings-page .settings-card .form-group label {
  margin-bottom: 0;
  padding-top: 9px;
  text-align: right;
  white-space: nowrap;
}

.ai-settings-page .settings-card .form-group label::after {
  content: "：";
}

.ai-settings-page .settings-card .form-group > :not(label) {
  grid-column: 2;
}

.ai-settings-page .settings-card .form-group .form-hint {
  margin-top: 0;
}

.ai-settings-page .settings-card .form-row {
  align-items: start;
}

@media (max-width: 900px) {
  .ai-settings-page .settings-card .form-group {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .ai-settings-page .settings-card .form-group label {
    padding-top: 0;
    text-align: left;
  }

  .ai-settings-page .settings-card .form-group > :not(label) {
    grid-column: auto;
  }
}

.form-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  outline: none;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color .2s;
}

.form-input:focus { border-color: var(--primary); }

select.form-input { cursor: pointer; }

.form-textarea {
  resize: vertical;
  min-height: 70px;
  font-family: inherit;
  line-height: 1.5;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 0;
}

.form-row {
  display: flex;
  gap: 8px;
}

.form-group.half { flex: 1; }

.language-section {
  margin-bottom: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fafafa;
}

.language-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.language-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 12px;
}

.language-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.language-item label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.language-item.compact .form-input {
  min-height: 38px;
}

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

.input-with-toggle {
  display: flex;
  gap: 4px;
}

.input-with-toggle .form-input { flex: 1; }

.toggle-visibility {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  font-size: 12px;
  cursor: pointer;
  white-space: nowrap;
  color: var(--text-muted);
  transition: background .2s;
}

.toggle-visibility:hover { background: var(--border); }

.ai-settings-page .settings-card + .settings-card {
  margin-top: 10px !important;
}

.ai-settings-page .settings-section > .form-hint:first-of-type {
  margin-bottom: 4px !important;
}

.ai-settings-page .settings-actions {
  margin-top: 0;
}

.ai-settings-page .test-result {
  margin-top: 4px;
}

.settings-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.btn-primary {
  padding: 8px 20px;
  background: var(--primary);
  color: #1e1e2e;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}

.btn-primary:hover { opacity: 0.85; }

.btn-outline {
  padding: 8px 20px;
  background: none;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, border-color .2s;
}

.btn-outline:hover { background: var(--bg); border-color: var(--primary); }
.btn-outline:disabled { opacity: 0.5; cursor: default; }

.save-status {
  font-size: 13px;
  font-weight: 600;
  display: none;
}

.test-result {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
}

.test-result.success {
  background: rgba(166,227,161,0.12);
  color: #166534;
  border: 1px solid rgba(166,227,161,0.3);
}

.test-result.error {
  background: rgba(243,139,168,0.12);
  color: #991b1b;
  border: 1px solid rgba(243,139,168,0.3);
}

.test-icon {
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

.test-message { flex: 1; }

/* Subscription modal */
.sub-info-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.sub-info-row .label { color: var(--text-muted); }

.sub-radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 10px 0;
}

.sub-radio-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: border-color 0.2s, background 0.2s;
}

.sub-radio-group label:hover {
  border-color: var(--primary);
  background: rgba(137,180,250,0.05);
}

.sub-radio-group input[type="radio"] {
  accent-color: var(--primary);
}

.sub-radio-group .plan-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
}

.sub-note-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  outline: none;
  margin-top: 4px;
}

.sub-note-input:focus { border-color: var(--primary); }

.sub-section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin: 12px 0 4px;
}

.sub-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.sub-actions .btn-cancel {
  padding: 7px 16px;
  border: 1px solid var(--border);
  background: none;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.sub-actions .btn-confirm {
  padding: 7px 16px;
  background: var(--primary);
  color: #1e1e2e;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.sub-actions .btn-confirm:hover { opacity: 0.85; }
.sub-actions .btn-confirm:disabled { opacity: 0.5; cursor: default; }

.sub-manage-btns {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
}

.sub-manage-btns button {
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s;
}

.sub-manage-btns button:hover { opacity: 0.85; }

.btn-sub-grant {
  background: var(--primary);
  color: #1e1e2e;
}

.btn-sub-revoke {
  background: var(--danger);
  color: #fff;
}

/* Notes */
.notes-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notes-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.btn-outline {
  padding: 8px 14px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  transition: border-color 0.2s, background 0.2s;
}

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(137,180,250,0.06);
}

.notes-loading {
  padding: 12px 14px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 13px;
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.note-item-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: flex-start;
}

.note-item-row.editing {
  align-items: flex-start;
}

.note-item-index {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  background: rgba(137,180,250,0.14);
  color: #355f93;
  font-size: 12px;
  font-weight: 700;
}

.note-item-input {
  min-height: 44px;
  resize: none;
  overflow: hidden;
  line-height: 1.45;
}

.note-item-text {
  min-height: 44px;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  font-size: 13px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.note-item-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.note-action-btn {
  min-width: 52px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, opacity 0.2s;
}

.note-action-btn:hover:not(:disabled) {
  border-color: var(--primary);
  background: rgba(137,180,250,0.06);
}

.note-action-btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.note-action-btn.danger {
  color: #991b1b;
  border-color: rgba(243,139,168,0.35);
  background: rgba(243,139,168,0.08);
}

.note-action-btn.primary {
  color: #1e40af;
  border-color: rgba(137,180,250,0.55);
  background: rgba(137,180,250,0.10);
}

.note-action-btn.cancel {
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .notes-header {
    flex-direction: column;
    align-items: stretch;
  }

  .note-item-row {
    grid-template-columns: 1fr;
  }

  .note-item-index {
    width: 48px;
  }

  .note-item-actions {
    justify-content: flex-start;
  }
}