/* ===== 七虎AI Design System v2 - Light Theme ===== */
/* 设计方向：明亮简洁 + 透明玻璃态 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* CSS Custom Properties - Light Theme */
:root {
  /* Colors - Dark Theme */
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #F5F7FC;
  --color-bg-tertiary: #FFFFFF;
  --color-bg-hover: #F0F2F8;
  --color-bg-active: #E8EBF5;

  --color-text-primary: #1A1F36;
  --color-text-secondary: #5A6480;
  --color-text-tertiary: #8892B0;
  --color-text-disabled: #C4C9D9;
  --color-text-inverse: #FFFFFF;

  --color-accent: #6C63FF;
  --color-accent-hover: #8B85FF;
  --color-accent-light: rgba(108, 99, 255, 0.15);
  --color-accent-subtle: rgba(108, 99, 255, 0.08);

  --color-success: #10B981;
  --color-success-light: rgba(16, 185, 129, 0.12);
  --color-warning: #F59E0B;
  --color-warning-light: rgba(245, 158, 11, 0.12);
  --color-error: #EF4444;
  --color-error-light: rgba(239, 68, 68, 0.12);
  --color-info: #3B82F6;
  --color-info-light: rgba(59, 130, 246, 0.12);

  --color-border: rgba(0, 0, 0, 0.10);
  --color-border-light: rgba(0, 0, 0, 0.06);
  --color-border-hover: rgba(0, 0, 0, 0.16);

  --color-sidebar-bg: #FFFFFF;
  --color-sidebar-hover: rgba(108, 99, 255, 0.06);
  --color-sidebar-active: rgba(108, 99, 255, 0.12);

  /* Surface/card colors */
  --color-surface: #FFFFFF;
  --color-surface-hover: #F5F7FC;
  --color-surface-elevated: #FFFFFF;

  /* Shadows - Dark theme */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 48px rgba(0,0,0,0.15), 0 4px 12px rgba(0,0,0,0.08);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-2xl: 24px;
  --space-3xl: 32px;
  --space-4xl: 40px;
  --space-5xl: 48px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-md: 15px;
  --text-lg: 18px;
  --text-xl: 22px;
  --text-2xl: 28px;
  --text-3xl: 36px;

  /* Layout */
  --sidebar-width: 240px;
  --sidebar-collapsed: 64px;
  --header-height: 56px;
  --admin-sidebar-width: 220px;

  /* Transitions */
  --transition-fast: 120ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* Z-index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

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

html {
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  line-height: 1.6;
  overflow: hidden;
  height: 100vh;
}

#root {
  height: 100vh;
  overflow: hidden;
}

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

a:hover {
  color: var(--color-accent-hover);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* Scrollbar - Dark theme */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--color-text-disabled);
  border-radius: var(--radius-full);
}

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

/* Utility Classes */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.w-full { width: 100%; }
.h-full { height: 100%; }
.relative { position: relative; }
.absolute { position: absolute; }
.hidden { display: none; }
.pointer { cursor: pointer; }
.select-none { user-select: none; }

/* Animation utilities */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideLeft {
  from { opacity: 0; transform: translateX(8px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px rgba(108, 99, 255, 0.3); }
  50% { box-shadow: 0 0 20px rgba(108, 99, 255, 0.5); }
}

.animate-fadeIn { animation: fadeIn var(--transition-normal); }
.animate-slideUp { animation: slideUp var(--transition-normal); }
.animate-slideDown { animation: slideDown var(--transition-normal); }
.animate-pulse { animation: pulse 2s ease infinite; }

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

/* Spinner */
.audit-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(108, 99, 255, 0.2);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Loading screen */
.loading-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  font-size: 18px;
  color: var(--color-text-secondary);
  background: var(--color-bg-primary);
}

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

@media (min-width: 769px) and (max-width: 1024px) {
  :root {
    --sidebar-width: 64px;
  }
}

/* === Glass card effect === */
.glass-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-lg);
}

/* === Gradient text === */
.gradient-text {
  background: linear-gradient(135deg, #6C63FF, #A78BFA, #C084FC);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === Admin stats card grid === */
.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

.stat-card {
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.stat-card:hover {
  border-color: rgba(108, 99, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(108, 99, 255, 0.08);
}

.stat-card .stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.stat-card .stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.stat-card .stat-sub {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-xs);
}

/* === Common button styles === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 600;
  color: white;
  background: var(--color-accent);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 4px 16px rgba(108, 99, 255, 0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: 500;
  color: white;
  background: var(--color-error);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-danger:hover {
  background: #DC2626;
}

.btn-sm {
  padding: 6px 12px;
  font-size: var(--text-sm);
}

/* === Form elements === */
.form-input-dark {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  outline: none;
  transition: all var(--transition-fast);
  width: 100%;
}

.form-input-dark:focus {
  border-color: rgba(108, 99, 255, 0.4);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

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

.form-select-dark {
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-select-dark:focus {
  border-color: rgba(108, 99, 255, 0.4);
}

/* === Table (dark theme) === */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: 12px 16px;
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
}

.data-table tr:hover td {
  background: var(--color-bg-hover);
}

/* === Badge === */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: var(--text-xs);
  font-weight: 600;
}

.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-error { background: var(--color-error-light); color: var(--color-error); }
.badge-info { background: var(--color-info-light); color: var(--color-info); }
.badge-accent { background: var(--color-accent-light); color: var(--color-accent); }

/* === Modal/Dialog === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
}

.modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.modal-header h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

/* === Toast === */
.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  z-index: var(--z-toast);
  animation: slideDown var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

/* ===== Color Scheme Improvements v2 ===== */
/* Glassmorphism + Text Highlighting + Consistency Fixes */

/* Glass card effect */
.admin-page-card,
.admin-card,
.stat-card,
.dashboard-card {
  background: rgba(255, 255, 255, 0.7) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(0, 0, 0, 0.08) !important;
}

/* Stat number highlight */
.stat-value,
.stat-number,
.metric-value {
  color: var(--color-text-primary) !important;
  font-weight: 700 !important;
  text-shadow: 0 0 20px rgba(108, 99, 255, 0.15);
}

/* Section title highlight */
.section-title,
.page-title,
.card-title,
h1, h2, h3 {
  color: var(--color-text-primary) !important;
}

/* Accent text highlight */
.text-accent,
.text-primary,
.highlight-text {
  color: var(--color-accent) !important;
  font-weight: 600;
}

/* Table header improvements */
table th,
.table-header {
  background: rgba(108, 99, 255, 0.08) !important;
  color: var(--color-text-primary) !important;
  font-weight: 600 !important;
}

/* Table row hover */
table tbody tr:hover,
.table-row:hover {
  background: rgba(108, 99, 255, 0.04) !important;
}

/* Input/Select consistency */
input,
textarea,
select,
.form-input,
.form-control {
  background: #FFFFFF !important;
  border: 1px solid rgba(0, 0, 0, 0.10) !important;
  color: var(--color-text-primary) !important;
  border-radius: var(--radius-md) !important;
  transition: border-color 0.2s, box-shadow 0.2s !important;
}

input:focus,
textarea:focus,
select:focus,
.form-input:focus,
.form-control:focus {
  border-color: var(--color-accent) !important;
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.12) !important;
  outline: none !important;
}

/* Button consistency */
button,
.btn,
.admin-btn {
  border-radius: var(--radius-md) !important;
  transition: all 0.2s !important;
}

/* Primary button */
.btn-primary,
.admin-btn-primary,
button[type="submit"] {
  background: var(--color-accent) !important;
  color: white !important;
  border: none !important;
}

.btn-primary:hover,
.admin-btn-primary:hover {
  background: var(--color-accent-hover) !important;
  box-shadow: 0 4px 12px rgba(108, 99, 255, 0.3) !important;
}

/* Secondary/ghost button */
.btn-secondary,
.admin-btn-secondary {
  background: rgba(108, 99, 255, 0.06) !important;
  color: var(--color-text-secondary) !important;
  border: 1px solid rgba(0, 0, 0, 0.08) !important;
}

.btn-secondary:hover,
.admin-btn-secondary:hover {
  background: rgba(108, 99, 255, 0.10) !important;
  color: var(--color-text-primary) !important;
}

/* Badge/tag improvements */
.badge,
.tag,
.admin-badge {
  border-radius: var(--radius-full) !important;
  font-weight: 600 !important;
  padding: 2px 10px !important;
}

/* Badge variants */
.badge-success,
.admin-badge-success {
  background: rgba(16, 185, 129, 0.12) !important;
  color: #10B981 !important;
}

.badge-warning,
.admin-badge-warning {
  background: rgba(245, 158, 11, 0.12) !important;
  color: #F59E0B !important;
}

.badge-error,
.admin-badge-danger {
  background: rgba(239, 68, 68, 0.12) !important;
  color: #EF4444 !important;
}

.badge-info,
.admin-badge-info {
  background: rgba(59, 130, 246, 0.12) !important;
  color: #3B82F6 !important;
}

/* Empty state */
.empty-state,
.admin-empty {
  color: var(--color-text-tertiary) !important;
  text-align: center;
  padding: 48px 24px !important;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(108, 99, 255, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(108, 99, 255, 0.4);
}

/* Link color */
a {
  color: var(--color-accent);
  transition: color 0.2s;
}

a:hover {
  color: var(--color-accent-hover);
}

/* Tab improvements */
.tab-active,
.tab-item.active {
  color: var(--color-accent) !important;
  border-bottom-color: var(--color-accent) !important;
}

/* Modal/dialog overlay */
.modal-overlay,
.dialog-overlay {
  background: rgba(0, 0, 0, 0.3) !important;
  backdrop-filter: blur(4px) !important;
}

/* Card hover effect */
.admin-card:hover,
.stat-card:hover {
  border-color: rgba(108, 99, 255, 0.2) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08) !important;
}