/* ===== DataNexus App Styles ===== */
/* Matches landing page design tokens */

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111627;
  --bg-card: #161b2e;
  --bg-editor: #0d1117;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.3);
  --accent-blue: #0088ff;
  --text-primary: #e8eaf0;
  --text-secondary: #8b92a8;
  --text-muted: #5a6178;
  --border: rgba(255, 255, 255, 0.06);
  --border-active: rgba(0, 212, 170, 0.3);
  --gradient-1: linear-gradient(135deg, #00d4aa 0%, #0088ff 100%);
  --danger: #ff6b6b;
  --warning: #ffc857;
  --success: #00d4aa;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
}

/* ===== APP NAV ===== */
.app-nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  padding: 0.75rem 1.5rem;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-nav-left {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.app-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.5px;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.app-nav-links {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all var(--transition);
  letter-spacing: 0.2px;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-dim);
}

.app-nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.db-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Space Grotesk', sans-serif;
}

.db-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

.db-dot.error {
  background: var(--danger);
  box-shadow: 0 0 6px var(--danger);
}

/* ===== APP LAYOUT ===== */
.app-container {
  margin-top: 52px;
  min-height: calc(100vh - 52px);
  display: flex;
  flex-direction: column;
}

/* ===== SQL EDITOR PAGE ===== */
.editor-layout {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 52px);
}

.editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}

.editor-toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.editor-toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--gradient-1);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

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

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
}

.btn-ghost:hover {
  color: var(--accent);
  background: var(--accent-dim);
}

.btn-sm {
  font-size: 0.72rem;
  padding: 0.35rem 0.8rem;
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-icon:hover {
  color: var(--accent);
  border-color: var(--border-active);
}

.editor-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.editor-sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.table-item {
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 2px;
}

.table-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.table-item.active {
  background: var(--accent-dim);
}

.table-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.table-icon {
  font-size: 0.7rem;
  opacity: 0.5;
}

.table-columns {
  padding-left: 1.5rem;
  margin-top: 0.25rem;
  display: none;
}

.table-item.active .table-columns {
  display: block;
}

.column-item {
  font-size: 0.72rem;
  color: var(--text-muted);
  padding: 0.2rem 0;
  font-family: 'DM Sans', sans-serif;
}

.column-type {
  color: var(--accent);
  font-family: 'Space Grotesk', monospace;
  font-size: 0.65rem;
  margin-left: 0.35rem;
}

/* Editor Area */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sql-input-wrapper {
  position: relative;
  flex-shrink: 0;
}

.sql-input {
  width: 100%;
  min-height: 140px;
  max-height: 300px;
  padding: 1rem 1.25rem;
  background: var(--bg-editor);
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  tab-size: 2;
}

.sql-input::placeholder {
  color: var(--text-muted);
}

.sql-input:focus {
  border-bottom-color: var(--accent);
}

.query-hint {
  position: absolute;
  bottom: 0.5rem;
  right: 1rem;
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: 'Space Grotesk', sans-serif;
}

.query-hint kbd {
  background: var(--bg-card);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  font-size: 0.65rem;
}

/* Results Area */
.results-area {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1.25rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.results-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'Space Grotesk', sans-serif;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.results-info .count {
  color: var(--accent);
  font-weight: 600;
}

.results-info .timing {
  color: var(--text-muted);
}

.results-tabs {
  display: flex;
  gap: 0.25rem;
}

.result-tab {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.result-tab:hover {
  color: var(--text-secondary);
}

.result-tab.active {
  background: var(--accent-dim);
  color: var(--accent);
}

.results-table-wrapper {
  flex: 1;
  overflow: auto;
}

.results-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.82rem;
}

.results-table th {
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  text-align: left;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  z-index: 1;
}

.results-table td {
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.results-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.results-table td.num {
  font-family: 'Space Grotesk', monospace;
  color: var(--accent);
}

.results-table td.null-val {
  color: var(--text-muted);
  font-style: italic;
}

/* Empty/Error States */
.results-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  gap: 0.75rem;
  padding: 3rem;
}

.results-empty-icon {
  font-size: 2.5rem;
  opacity: 0.3;
}

.results-empty h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.results-empty p {
  font-size: 0.85rem;
  text-align: center;
  max-width: 400px;
  line-height: 1.6;
}

.error-message {
  margin: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  line-height: 1.5;
}

/* Sample Queries */
.sample-queries {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.sample-query {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem;
  padding: 0.4rem 0.85rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.sample-query:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ===== CHART VISUALIZATION ===== */
.chart-container {
  padding: 1.5rem;
  flex: 1;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.chart-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  min-height: 250px;
}

.chart-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  letter-spacing: 0.3px;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 180px;
  padding: 0 0.5rem;
}

.bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  max-width: 60px;
}

.bar {
  width: 100%;
  border-radius: 4px 4px 0 0;
  background: var(--gradient-1);
  transition: all 0.4s ease;
  min-height: 4px;
  position: relative;
}

.bar:hover {
  opacity: 0.85;
}

.bar-label {
  font-size: 0.6rem;
  color: var(--text-muted);
  font-family: 'Space Grotesk', sans-serif;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 55px;
}

.bar-value {
  font-size: 0.62rem;
  color: var(--accent);
  font-family: 'Space Grotesk', monospace;
  font-weight: 600;
}

/* Horizontal bar chart */
.hbar-chart {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0 0.5rem;
}

.hbar-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hbar-label {
  width: 120px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: 'Space Grotesk', sans-serif;
  text-align: right;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hbar-track {
  flex: 1;
  height: 24px;
  background: var(--bg-card);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.hbar-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--gradient-1);
  transition: width 0.6s ease;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 0.5rem;
}

.hbar-value {
  font-size: 0.68rem;
  color: white;
  font-family: 'Space Grotesk', monospace;
  font-weight: 600;
  white-space: nowrap;
}

/* ===== DASHBOARD PAGE ===== */
.dashboard-container {
  padding: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.dashboard-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.dashboard-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.dashboard-period {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-card);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition);
}

.kpi-card:hover {
  border-color: var(--border-active);
}

.kpi-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.kpi-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.kpi-change {
  font-size: 0.75rem;
  margin-top: 0.35rem;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
}

.kpi-change.positive { color: var(--success); }
.kpi-change.negative { color: var(--danger); }

/* Dashboard Charts Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.dashboard-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition);
}

.dashboard-card:hover {
  border-color: var(--border-active);
}

.dashboard-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.dashboard-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.dashboard-card.full-width {
  grid-column: 1 / -1;
}

/* Recent Orders Table */
.recent-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.recent-table th {
  text-align: left;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.recent-table td {
  padding: 0.6rem 0.75rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.recent-table td.num {
  font-family: 'Space Grotesk', monospace;
  color: var(--accent);
}

.status-badge {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  text-transform: uppercase;
}

.status-badge.completed {
  background: rgba(0, 212, 170, 0.12);
  color: var(--success);
}

.status-badge.shipped {
  background: rgba(0, 136, 255, 0.12);
  color: var(--accent-blue);
}

.status-badge.processing {
  background: rgba(255, 200, 87, 0.12);
  color: var(--warning);
}

.status-badge.refunded {
  background: rgba(255, 107, 107, 0.12);
  color: var(--danger);
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 3rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .editor-sidebar {
    display: none;
  }
  .kpi-grid {
    grid-template-columns: 1fr;
  }
  .app-nav-links {
    gap: 0;
  }
  .nav-link {
    padding: 0.4rem 0.6rem;
    font-size: 0.75rem;
  }
}