:root {
  --bg-dark: #f0f2f5;
  --bg-panel: #ffffff;
  --bg-input: #ffffff;
  --border: #e1e4e8;
  --text: #24292f;
  --text-muted: #57606a;
  --accent: #0969da;
  --accent-hover: #0550ae;
  --success: #1a7f37;
  --success-bg: #dafbe1;
  --error: #cf222e;
  --error-bg: #ffebe9;
  --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --shadow: 0 1px 3px rgba(31, 35, 40, 0.07), 0 8px 24px rgba(66, 74, 83, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --danger: #cf222e;
  --danger-hover: #a40e26;
  --radius: 8px;
  --radius-lg: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg-dark);
  color: var(--text);
  min-height: 100vh;
}

.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: radial-gradient(circle at 10% 10%, #bfdbfe 0%, transparent 35%),
              radial-gradient(circle at 90% 90%, #bae6fd 0%, transparent 40%),
              linear-gradient(145deg, #f8fafc, #eef2ff);
}

.login-card {
  width: min(100%, 520px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.2);
  padding: 2.25rem;
}

.login-card h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2rem;
  line-height: 1.1;
}

.login-card .form-group {
  margin-top: 1rem;
}

.login-card input {
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 1rem;
}

.login-actions {
  margin-top: 1.25rem;
  display: flex;
  justify-content: flex-end;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  z-index: 10;
}

.header h1 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.header-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.profile-dropdown {
  position: relative;
}

.profile-trigger {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 0.35rem 0.7rem 0.35rem 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  color: var(--text);
}

.profile-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #dbeafe;
  color: #1d4ed8;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
}

.profile-email {
  font-size: 0.9rem;
}

.profile-caret {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.profile-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 220px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--shadow-lg);
  padding: 0.75rem;
  z-index: 30;
}

.profile-menu-email {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.profile-menu-logout {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  padding: 0.5rem 0.6rem;
  cursor: pointer;
  color: var(--danger);
}

.main {
  display: grid;
  grid-template-columns: 240px 280px 1fr;
  grid-template-rows: auto auto auto 1fr;
  grid-template-areas:
    "refinery trends params"
    "sql sql sql"
    "results results results"
    "plot plot plot";
  gap: 1rem;
  padding: 1rem;
  flex: 1;
}

.panel {
  background: var(--bg-panel);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel h2 {
  margin: 0 0 0.75rem 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.refinery-panel {
  grid-area: refinery;
}

.trends-panel {
  grid-area: trends;
}

.params-panel {
  grid-area: params;
}

.sql-panel {
  grid-area: sql;
}

.results-panel {
  grid-area: results;
}

.plot-panel {
  grid-area: plot;
  min-height: 200px;
}

.trend-select-group {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.trend-select-group .trend-select {
  margin-bottom: 0;
}

.trend-select {
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.trend-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

.trend-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.params-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  align-items: start;
}

.param-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.param-field label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
}

.param-field input,
.param-field select {
  padding: 0.5rem 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  min-width: 0;
  width: 100%;
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.param-field input:focus,
.param-field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.1);
}

.sql-panel textarea,
#sql-editor {
  width: 100%;
  min-height: 180px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 13px;
}

.CodeMirror {
  height: 180px !important;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.sql-actions {
  margin-top: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.data-grid-container {
  overflow: auto;
  max-height: 300px;
}

.table-wrapper {
  overflow-x: auto;
}

.data-grid {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-grid th,
.data-grid td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-grid th {
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 500;
  position: sticky;
  top: 0;
}

.data-grid tr:hover td {
  background: rgba(0, 0, 0, 0.02);
}

.plot-container {
  min-height: 280px;
  position: relative;
}

.plot-container canvas {
  max-height: 280px;
}

.plot-actions {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.btn-plot-action {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background-color 0.2s, border-color 0.2s, transform 0.1s;
}

.btn-plot-action:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-plot-action:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-load-saved {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #7dd3fc;
  color: #0369a1;
}

.btn-load-saved:hover:not(:disabled) {
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
  border-color: #38bdf8;
}

.btn-add-plot {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #86efac;
  color: #15803d;
}

.btn-add-plot:hover:not(:disabled) {
  background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
  border-color: #4ade80;
}

.btn-plot-action .btn-icon {
  font-size: 1rem;
  line-height: 1;
}

.plots-canvas {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.plot-card {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.plot-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  padding: 0.5rem 1rem;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}

.plot-card-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.plot-saved-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--success-bg);
  color: var(--success);
  border-radius: 4px;
  font-weight: 500;
}

.plot-card-title {
  font-weight: 500;
  font-size: 0.9rem;
}

.plot-card-body {
  padding: 1rem;
  min-height: 200px;
}

.plot-card-body canvas {
  max-height: 280px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.params-list {
  margin-bottom: 0.5rem;
}

.param-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
}

.param-row-locked {
  background: rgba(9, 105, 218, 0.06);
  border: 1px solid rgba(9, 105, 218, 0.2);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  padding: 0.5rem 0.75rem;
}

.param-row-locked .param-name {
  font-weight: 600;
  color: var(--accent);
}

.param-row-added {
  background: var(--bg-dark);
  border-radius: 4px;
  margin-bottom: 0.25rem;
}

.param-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.param-locked {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

.param-add-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.param-add-row input,
.param-add-row select {
  padding: 0.4rem 0.5rem;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.param-add-row input[type="text"]:first-of-type,
.param-add-row select:first-of-type {
  min-width: 160px;
}

.btn-add-param {
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.btn-add-param:hover {
  background: var(--accent-hover);
}

.btn-add-param:active {
  transform: scale(0.98);
}

.params-added-list {
  max-height: 120px;
  overflow-y: auto;
}

.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

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

.btn-danger:hover:not(:disabled) {
  background: var(--danger-hover);
}

.btn-danger:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent);
  padding: 0;
  font-size: 0.85rem;
  text-decoration: underline;
}

.btn-link:hover {
  color: var(--accent-hover);
}

.error-msg {
  color: var(--error);
  font-size: 0.9rem;
  padding: 0.5rem 0;
}

.muted {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hidden {
  display: none !important;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateX(100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: auto;
  max-width: 360px;
}

.toast-show {
  opacity: 1;
  transform: translateX(0);
}

.toast-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(26, 127, 55, 0.3);
}

.toast-error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(207, 34, 46, 0.3);
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(31, 35, 40, 0.4);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  min-width: 400px;
  max-width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-tall {
  height: 85vh;
}

.modal-wide {
  min-width: 800px;
}

.modal-plot {
  min-width: 420px;
}

.modal-content h3 {
  margin: 0 0 1rem 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
}

.plot-hint {
  margin: -0.5rem 0 1rem 0;
  font-size: 0.8rem;
  line-height: 1.4;
}

.plot-cols-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  max-height: 160px;
  overflow-y: auto;
  padding: 0.5rem;
  background: var(--bg-dark);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.plot-check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
  padding: 0.2rem 0;
}

.plot-check-label:hover {
  color: var(--accent);
}

.plot-check-label input {
  margin: 0;
}

.plot-values-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
}

.plot-value-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.plot-value-row:last-child {
  border-bottom: none;
}

.plot-value-row:hover {
  background: var(--bg-input);
}

.plot-value-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
}

.plot-value-row .plot-value-name {
  flex: 1;
  font-size: 0.9rem;
}

.plot-value-row .plot-value-axis {
  width: 56px;
  padding: 0.25rem 0.35rem;
  font-size: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-input);
  cursor: pointer;
}

.plot-value-row .plot-color-swatch {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.plot-value-row .plot-color-swatch input[type="color"] {
  width: 36px;
  height: 36px;
  padding: 2px;
  cursor: pointer;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: transparent;
}

.plot-value-row .plot-color-swatch input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 2px;
}

.plot-value-row .plot-color-swatch input[type="color"]::-webkit-color-swatch {
  border-radius: 4px;
  border: none;
}

.plot-series-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 60px auto;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.plot-series-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 0.5rem;
}

.plot-series-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 60px auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.5rem;
  background: var(--bg-dark);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.plot-series-row .plot-series-label {
  min-width: 0;
}

.plot-series-row select {
  padding: 0.4rem 0.5rem;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.plot-series-row .plot-series-remove {
  padding: 0.25rem 0.5rem;
  min-width: 32px;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}

.form-group .checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  margin-bottom: 0;
}

.form-group .checkbox-label input[type="checkbox"] {
  width: auto;
  flex-shrink: 0;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

.builder-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1.5rem;
  height: calc(100% - 180px);
  /* Adjust based on title and preview */
  margin-bottom: 1rem;
}

.builder-list-box {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  overflow-y: auto;
}

.builder-list-box.tall {
  height: 300px;
}

.builder-sidebar .builder-list-box {
  height: 345px;
}

.builder-table-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.builder-tabs-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.builder-table-tab {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.builder-table-name {
  cursor: pointer;
}

.builder-table-name:hover {
  text-decoration: underline;
  color: var(--accent);
}

.builder-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.tab-btn {
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  background: none;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 6px 6px 0 0;
  margin-bottom: -1px;
}

.tab-btn.active {
  border-color: var(--border) var(--border) var(--bg-panel);
  color: var(--text);
  background: var(--bg-panel);
}

.builder-main {
  display: flex;
  flex-direction: column;
}

.col-header {
  font-weight: 600;
  padding: 0.5rem;
  background: #eee;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  border-radius: 4px;
}

.col-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.5rem;
  cursor: pointer;
  font-size: 0.85rem;
}

.col-item:hover {
  background: rgba(0, 0, 0, 0.05);
}

.join-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  background: #fdfdfd;
  padding: 0.5rem;
  border: 1px solid #efefef;
  border-radius: 4px;
}

.join-row select {
  font-size: 0.8rem;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 0.75rem;
}

.builder-columns {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.builder-columns-list {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
}

/* The .col-item rule is now defined above with more specific styles */
/* .col-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
} */

/* The .col-item:hover rule is now defined above with more specific styles */
/* .col-item:hover {
  background: rgba(0, 0, 0, 0.05);
} */

.builder-preview-group textarea {
  background: #f8f9fa;
  font-family: 'Consolas', monospace;
  font-size: 0.8rem;
  width: 100%;
}

.settings-params-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.setting-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.setting-row span {
  flex: 1;
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .main {
    grid-template-columns: 1fr;
    grid-template-areas:
      "refinery"
      "trends"
      "params"
      "sql"
      "results"
      "plot";
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .header-actions {
    width: 100%;
  }
}