/**
 * dashboard.css — 0xRadar User Dashboard
 *
 * Design system:
 * - Dark theme default (#0A0E27 base)
 * - Cyan accent (#00D1FF)
 * - Card-based layout
 * - Sidebar navigation
 */

/* === Google Font === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* === CSS Variables === */
:root {
  --bg-primary: #0A0E27;
  --bg-secondary: #0F1230;
  --bg-card: #12153A;
  --bg-card-hover: #161B45;
  --bg-input: #0D1128;
  --bg-input-focus: #111530;
  --bg-sidebar: #0C1025;
  --bg-dropdown: #161B45;

  --accent: #00D1FF;
  --accent-dim: rgba(0, 209, 255, 0.12);
  --accent-hover: #00B8E0;
  --accent-glow: rgba(0, 209, 255, 0.25);

  --text-primary: #FFFFFF;
  --text-secondary: #8B93B0;
  --text-muted: #4A5270;
  --text-link: #00D1FF;

  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(0, 209, 255, 0.3);

  --success: #00E676;
  --success-dim: rgba(0, 230, 118, 0.12);
  --warning: #FFB300;
  --warning-dim: rgba(255, 179, 0, 0.12);
  --danger: #FF5252;
  --danger-dim: rgba(255, 82, 82, 0.12);
  --info: #00B8FF;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 8px 24px rgba(0, 0, 0, 0.4);

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', monospace;

  --sidebar-width: 240px;
  --header-height: 64px;
  --max-content-width: 1200px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* === Reset === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* Light mode */
body.light-mode {
  --bg-primary: #F5F6FA;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F0F1F8;
  --bg-input: #F0F1F8;
  --bg-sidebar: #ECEEF5;
  --bg-dropdown: #FFFFFF;

  --text-primary: #0A0E27;
  --text-secondary: #5A6380;
  --text-muted: #8B93B0;

  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.12);

  --accent: #0099CC;
  --accent-dim: rgba(0, 153, 204, 0.1);
  --accent-hover: #007AA3;
}

/* === Typography === */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.25;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 0.9375rem; }

p { color: var(--text-secondary); }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--accent-hover); }

/* === Layout Shell === */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform var(--transition-normal);
}

.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.sidebar-logo svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 12px 10px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
}

.nav-item:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.nav-item:hover svg { opacity: 1; }

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

.nav-item.active svg {
  opacity: 1;
  color: var(--accent);
}

.nav-item-badge {
  margin-left: auto;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 10px;
}

.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Top Header */
.top-header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.sidebar-toggle:hover {
  background: var(--bg-card);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.user-menu {
  position: relative;
}

.user-menu-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 6px 10px 6px 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-menu-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
}

.user-email {
  font-size: 0.875rem;
  color: var(--text-primary);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-dropdown);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 6px;
  min-width: 200px;
  box-shadow: var(--shadow-elevated);
  display: none;
  z-index: 200;
}

.user-dropdown.open { display: block; }

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  text-decoration: none;
}

.dropdown-item:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.dropdown-item.danger {
  color: var(--danger);
}

.dropdown-item.danger:hover {
  background: var(--danger-dim);
}

.dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* Page Container */
.page-container {
  padding: 28px 32px;
  max-width: var(--max-content-width);
  width: 100%;
}

.page-header {
  margin-bottom: 28px;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.page-subtitle {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
}

.card-action {
  font-size: 0.8125rem;
  color: var(--accent);
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  transition: color var(--transition-fast);
}

.card-action:hover { color: var(--accent-hover); }

/* Grid Layouts */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stats-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stats-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 500;
}

.stats-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stats-value.accent { color: var(--accent); }
.stats-value.success { color: var(--success); }
.stats-value.warning { color: var(--warning); }
.stats-value.danger { color: var(--danger); }

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

/* Section grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.dashboard-grid.full-width {
  grid-template-columns: 1fr;
}

/* === Forms === */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-input.mono {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 5px;
}

.form-hint.error { color: var(--danger); }
.form-hint.success { color: var(--success); }

.form-row {
  display: flex;
  gap: 12px;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

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

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

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

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

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-card);
  border-color: var(--accent);
  color: var(--accent);
}

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

.btn-danger:hover:not(:disabled) {
  opacity: 0.85;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 6px 10px;
}

.btn-ghost:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8125rem;
}

.btn-icon {
  padding: 8px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* === Badges / Pills === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-pro {
  background: var(--accent-dim);
  color: var(--accent);
}

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

.badge-lifetime {
  background: var(--success-dim);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-dim);
  color: var(--warning);
}

.badge-danger {
  background: var(--danger-dim);
  color: var(--danger);
}

/* === Tables === */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 12px;
  font-size: 0.875rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.table-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* === API Key Display === */
.api-key-display {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.api-key-prefix {
  color: var(--text-muted);
}

.api-key-hidden {
  color: var(--text-secondary);
  letter-spacing: 2px;
}

.btn-copy {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.btn-copy:hover { color: var(--accent); }
.btn-copy.copied { color: var(--success); }

/* === Playground / Tester === */
.playground-box {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.playground-input-row {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.playground-input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 12px 14px;
  font-size: 0.875rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
  outline: none;
}

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

.playground-btn {
  padding: 12px 20px;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

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

.playground-response {
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  max-height: 300px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-secondary);
}

/* === Code snippets === */
.code-snippet {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
  overflow-x: auto;
  position: relative;
}

.code-snippet code {
  color: var(--text-secondary);
}

.code-snippet .kw { color: #C792EA; }
.code-snippet .str { color: #C3E88D; }
.code-snippet .fn { color: #82AAFF; }
.code-snippet .cm { color: var(--text-muted); font-style: italic; }
.code-snippet .var { color: #F78C6C; }

/* === Chart container === */
.chart-container {
  position: relative;
  height: 200px;
  width: 100%;
}

/* === Tabs === */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 20px;
}

.tab-btn {
  flex: 1;
  padding: 8px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* === Toggle / Switch === */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

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

.toggle-label-text {
  font-size: 0.9375rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.toggle-label-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-input);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 2px;
  bottom: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent-dim);
  border-color: var(--accent);
}

.toggle input:checked + .toggle-slider::before {
  background: var(--accent);
  transform: translateX(20px);
}

/* === Progress bar === */
.progress-bar {
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width var(--transition-normal);
}

.progress-fill.warning { background: var(--warning); }
.progress-fill.danger { background: var(--danger); }

/* === Toast / Notification === */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-elevated);
  min-width: 280px;
  max-width: 400px;
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-icon {
  font-size: 1.125rem;
  flex-shrink: 0;
}

.toast-content { flex: 1; }

.toast-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1px;
}

.toast-message {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  font-size: 1rem;
  line-height: 1;
}

.toast-close:hover { color: var(--text-primary); }

.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info .toast-icon { color: var(--info); }

/* === Loading States === */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* === Rate Limit Display === */
.rate-limit-bar {
  margin-top: 16px;
}

.rate-limit-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}

.rate-limit-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.rate-limit-value {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* === Empty State === */
.empty-state {
  text-align: center;
  padding: 48px 24px;
}

.empty-icon {
  font-size: 2.5rem;
  margin-bottom: 14px;
  opacity: 0.4;
}

.empty-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.empty-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 320px;
  margin: 0 auto 20px;
}

/* === Modal === */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.open { display: flex; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 28px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 24px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
}

/* === Utilities === */
.hidden { display: none !important; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.font-mono { font-family: var(--font-mono); }
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* === Responsive === */
@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
    width: 260px;
  }

  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
  }

  .sidebar-backdrop.open { display: block; }

  .sidebar-toggle { display: flex; }

  .main-content {
    margin-left: 0;
  }

  .page-container {
    padding: 20px 16px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-row {
    flex-direction: column;
  }

  .top-header {
    padding: 0 16px;
  }

  .user-email { display: none; }
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* === Chart.js custom === */
.chart-container canvas {
  max-height: 200px;
}