/* ==================== 
   CSS Variables & Theme
   ==================== */

/* 主题配色系统 */
:root {
  /* 主题基础变量 - 默认紫蓝主题 */
  --theme-primary: #667eea;
  --theme-secondary: #764ba2;
  --theme-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --theme-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --theme-accent: #764ba2;
  --theme-particle: #667eea;
}

/* 橘红色主题 */
[data-color-theme="orange-red"] {
  --theme-primary: #f97316;
  --theme-secondary: #ef4444;
  --theme-gradient: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
  --theme-bg: linear-gradient(135deg, #fdba74 0%, #f97316 50%, #ef4444 100%);
  --theme-accent: #ef4444;
  --theme-particle: #f97316;
}

/* 渐变蓝色主题 */
[data-color-theme="blue-gradient"] {
  --theme-primary: #3b82f6;
  --theme-secondary: #06b6d4;
  --theme-gradient: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --theme-bg: linear-gradient(135deg, #93c5fd 0%, #3b82f6 50%, #06b6d4 100%);
  --theme-accent: #06b6d4;
  --theme-particle: #3b82f6;
}

/* 渐变浅绿色主题 */
[data-color-theme="green-gradient"] {
  --theme-primary: #22c55e;
  --theme-secondary: #10b981;
  --theme-gradient: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
  --theme-bg: linear-gradient(135deg, #86efac 0%, #22c55e 50%, #10b981 100%);
  --theme-accent: #10b981;
  --theme-particle: #22c55e;
}

/* 粉红主题 */
[data-color-theme="pink"] {
  --theme-primary: #ec4899;
  --theme-secondary: #d946ef;
  --theme-gradient: linear-gradient(135deg, #ec4899 0%, #d946ef 100%);
  --theme-bg: linear-gradient(135deg, #f9a8d4 0%, #ec4899 50%, #d946ef 100%);
  --theme-accent: #d946ef;
  --theme-particle: #ec4899;
}

/* 深蓝主题 */
[data-color-theme="deep-blue"] {
  --theme-primary: #1e3a8a;
  --theme-secondary: #3b82f6;
  --theme-gradient: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  --theme-bg: linear-gradient(135deg, #60a5fa 0%, #1e3a8a 50%, #1e40af 100%);
  --theme-accent: #3b82f6;
  --theme-particle: #1e3a8a;
}

/* 金橙主题 */
[data-color-theme="gold-orange"] {
  --theme-primary: #f59e0b;
  --theme-secondary: #ea580c;
  --theme-gradient: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  --theme-bg: linear-gradient(135deg, #fcd34d 0%, #f59e0b 50%, #ea580c 100%);
  --theme-accent: #ea580c;
  --theme-particle: #f59e0b;
}

:root {
  /* Light Theme Colors */
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f8f9fa;
  
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  
  --border-color: rgba(0, 0, 0, 0.08);
  --shadow-color: rgba(0, 0, 0, 0.1);
  
  /* Brand Colors - 使用主题变量 */
  --brand-primary: var(--theme-primary);
  --brand-secondary: var(--theme-secondary);
  --brand-gradient: var(--theme-gradient);
  
  /* Status Colors */
  --success: #48bb78;
  --warning: #ed8936;
  --error: #f56565;
  --info: #4299e1;
  
  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --border-color: rgba(255, 255, 255, 0.1);
  --shadow-color: rgba(0, 0, 0, 0.3);
  
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ==================== 
   Particle Background
   ==================== */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--brand-primary);
  border-radius: 50%;
  opacity: 0.1;
  animation: float 15s infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.1;
  }
  90% {
    opacity: 0.1;
  }
  100% {
    transform: translateY(-100vh) rotate(720deg);
    opacity: 0;
  }
}

/* ==================== 
   Theme Controls
   ==================== */
.theme-controls {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 12px;
  z-index: 1000;
}

.theme-toggle,
.color-theme-toggle {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--text-primary);
  transition: all var(--transition-normal);
}

.theme-toggle:hover,
.color-theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 0 20px var(--brand-primary);
}

[data-theme="dark"] .theme-toggle {
  color: #fbbf24;
}

.color-theme-toggle:hover {
  transform: scale(1.1) rotate(-15deg);
}

.color-theme-toggle.active {
  background: var(--brand-gradient);
  color: white;
}

/* ==================== 
   Color Theme Panel
   ==================== */
.color-theme-panel {
  position: fixed;
  top: 80px;
  right: 20px;
  width: 280px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  z-index: 999;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
}

.color-theme-panel.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-color);
}

.panel-header span {
  font-weight: 600;
  color: var(--text-primary);
}

.close-panel {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: var(--space-xs);
  transition: color var(--transition-fast);
}

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

.theme-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.theme-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-option:hover {
  transform: translateY(-2px);
  border-color: var(--border-color);
}

.theme-option.active {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.theme-preview {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.theme-option span {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==================== 
   Glass Effect
   ==================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* ==================== 
   Page Structure
   ==================== */
.page {
  display: none;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.page.active {
  display: flex;
}

/* ==================== 
   Auth Pages
   ==================== */
.auth-container {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  animation: slideUp 0.6s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.logo-animation {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-lg);
}

.logo-ring {
  position: absolute;
  border: 2px solid var(--brand-primary);
  border-radius: 50%;
  opacity: 0.3;
}

.ring-1 {
  width: 100%;
  height: 100%;
  animation: pulse 2s ease-in-out infinite;
}

.ring-2 {
  width: 75%;
  height: 75%;
  top: 12.5%;
  left: 12.5%;
  animation: pulse 2s ease-in-out infinite 0.3s;
}

.ring-3 {
  width: 50%;
  height: 50%;
  top: 25%;
  left: 25%;
  animation: pulse 2s ease-in-out infinite 0.6s;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.3;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.1;
  }
}

.logo-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.5rem;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ==================== 
   Form Elements
   ==================== */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1rem;
  transition: color var(--transition-fast);
}

.input-wrapper input {
  width: 100%;
  padding: var(--space-md) var(--space-md) var(--space-md) 2.75rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.input-wrapper input:focus + .input-icon {
  color: var(--brand-primary);
}

.password-toggle {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: color var(--transition-fast);
}

.password-toggle:hover {
  color: var(--text-primary);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.checkbox-wrapper input {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.checkbox-wrapper input:checked + .checkmark {
  background: var(--brand-gradient);
  border-color: transparent;
}

.checkbox-wrapper input:checked + .checkmark::after {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: white;
  font-size: 0.625rem;
}

.checkbox-label {
  color: var(--text-secondary);
}

.forgot-link {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.forgot-link:hover {
  color: var(--brand-secondary);
}

/* Password Strength */
.password-strength {
  margin-top: calc(-1 * var(--space-sm));
}

.strength-bar {
  height: 4px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  width: 0;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
}

.strength-fill.weak { width: 33%; background: var(--error); }
.strength-fill.medium { width: 66%; background: var(--warning); }
.strength-fill.strong { width: 100%; background: var(--success); }

.strength-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  display: block;
}

/* ==================== 
   Buttons
   ==================== */
.btn-primary, .btn-secondary, .btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary:hover {
  background: var(--border-color);
  transform: translateY(-2px);
}

.btn-danger {
  background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
  color: white;
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 101, 101, 0.4);
}

.btn-glow {
  position: relative;
}

.btn-glow::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--brand-gradient);
  border-radius: var(--radius-md);
  opacity: 0;
  z-index: -1;
  filter: blur(10px);
  transition: opacity var(--transition-normal);
}

.btn-glow:hover::before {
  opacity: 0.5;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--brand-primary);
  color: white;
  border-color: var(--brand-primary);
}

.btn-loading {
  display: none;
  position: absolute;
  inset: 0;
  background: inherit;
  align-items: center;
  justify-content: center;
}

.loading {
  pointer-events: none;
}

.loading .btn-content {
  opacity: 0;
}

.loading .btn-loading {
  display: flex;
}

.loading-dots {
  display: flex;
  gap: 4px;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  animation: dotPulse 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
  0%, 100% { transform: scale(0.8); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}

/* ==================== 
   Auth Footer
   ==================== */
.auth-footer {
  text-align: center;
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.link-primary {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.link-primary:hover {
  color: var(--brand-secondary);
}

/* ==================== 
   Sidebar
   ==================== */
.sidebar {
  width: 260px;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition-normal);
  overflow-y: auto;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.sidebar-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 1.25rem;
  font-weight: 700;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--brand-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  overflow-y: auto;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.nav-item.active {
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.nav-item i {
  width: 24px;
  text-align: center;
}

/* ==================== 
   External Tools Section
   ==================== */
.tools-section {
  margin: var(--space-md) 0;
  padding: 0 var(--space-md);
  flex-shrink: 0;
}

.tools-header {
  padding: var(--space-sm) var(--space-md);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--space-xs);
}

.tool-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  margin-bottom: var(--space-xs);
}

.tool-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateX(4px);
}

.tool-item i {
  width: 24px;
  text-align: center;
  font-size: 0.875rem;
}

.sidebar-footer {
  padding: var(--space-md);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  flex-shrink: 0;
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.user-avatar {
  width: 40px;
  height: 40px;
  background: var(--brand-gradient);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.user-details {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  color: var(--text-primary);
}

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

.btn-logout {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  background: var(--error);
  color: white;
  border-color: var(--error);
}

/* ==================== 
   Main Content
   ==================== */
.main-content {
  flex: 1;
  margin-left: 260px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==================== 
   Top Bar
   ==================== */
.top-bar {
  position: sticky;
  top: 0;
  padding: var(--space-md) var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
}

.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-primary);
  cursor: pointer;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.date-display {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
}

.notifications {
  position: relative;
}

.notification-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.notification-btn:hover {
  background: var(--brand-primary);
  color: white;
  border-color: var(--brand-primary);
}

.notification-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  background: var(--error);
  color: white;
  border-radius: var(--radius-full);
  font-size: 0.625rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==================== 
   Tab Content
   ==================== */
.tab-content {
  display: none;
  flex: 1;
  padding: var(--space-xl);
  animation: fadeIn 0.3s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================== 
   Page Header
   ==================== */
.page-header {
  margin-bottom: var(--space-xl);
}

.page-title {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.page-title i {
  color: var(--brand-primary);
}

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

/* ==================== 
   Stats Cards
   ==================== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: transform var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-4px);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.gradient-blue { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.gradient-purple { background: linear-gradient(135deg, #9f7aea 0%, #805ad5 100%); }
.gradient-green { background: linear-gradient(135deg, #48bb78 0%, #38a169 100%); }
.gradient-orange { background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%); }
.gradient-red { background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%); }
.gradient-cyan { background: linear-gradient(135deg, #38b2ac 0%, #319795 100%); }

.stat-info {
  flex: 1;
}

.stat-label {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-trend {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.75rem;
  color: var(--success);
}

.stat-trend.down {
  color: var(--error);
}

/* ==================== 
   Charts
   ==================== */
.charts-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.chart-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

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

.chart-header h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.125rem;
  font-weight: 600;
}

.chart-header h3 i {
  color: var(--brand-primary);
}

.chart-filter {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
  cursor: pointer;
}

.chart-body {
  position: relative;
  height: 300px;
}

/* ==================== 
   Recent Section
   ==================== */
.recent-section {
  margin-bottom: var(--space-xl);
}

.section-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

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

.section-header h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.125rem;
  font-weight: 600;
}

.section-header h3 i {
  color: var(--brand-primary);
}

.view-all {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--brand-primary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.view-all:hover {
  color: var(--brand-secondary);
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.recent-item {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.recent-item:hover {
  background: var(--border-color);
  transform: translateX(4px);
}

.recent-icon {
  width: 40px;
  height: 40px;
  background: var(--brand-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-right: var(--space-md);
}

.recent-info {
  flex: 1;
}

.recent-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.recent-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.recent-amount {
  font-weight: 700;
  color: var(--brand-primary);
}

/* ==================== 
   Forms in Main Content
   ==================== */
.form-card {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
}

.form-header {
  margin-bottom: var(--space-lg);
}

.form-header h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.125rem;
  font-weight: 600;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group label i {
  color: var(--brand-primary);
  width: 16px;
}

.form-group input {
  padding: var(--space-md);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
}

.form-group input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
}

/* ==================== 
   Tables
   ==================== */
.table-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.table-header h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.125rem;
  font-weight: 600;
}

.table-filters {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.filter-group {
  position: relative;
  display: flex;
  align-items: center;
}

.filter-group i {
  position: absolute;
  left: var(--space-md);
  color: var(--text-muted);
}

.filter-group input {
  padding: var(--space-sm) var(--space-md) var(--space-sm) 2.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.875rem;
}

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

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th,
.data-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--bg-tertiary);
}

.data-table th:first-child {
  border-radius: var(--radius-sm) 0 0 0;
}

.data-table th:last-child {
  border-radius: 0 var(--radius-sm) 0 0;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

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

.data-table td {
  font-size: 0.9375rem;
}

.table-empty {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
  display: none;
}

.table-empty.show {
  display: block;
}

.table-empty i {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.table-empty p {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

/* ==================== 
   Filter Bar
   ==================== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
}

.filter-bar .filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.filter-bar .filter-group label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
}

.filter-bar .filter-group input {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* ==================== 
   Stats Page
   ==================== */
.stats-container {
  display: none;
}

.stats-container.show {
  display: block;
  animation: fadeIn 0.3s ease;
}

.stats-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.summary-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

.summary-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
}

.summary-info {
  flex: 1;
}

.summary-label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

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

.stats-charts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-chart-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

.stat-chart-card h4 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
}

.stat-chart-card h4 i {
  color: var(--brand-primary);
}

.chart-wrapper {
  position: relative;
  height: 280px;
}

.stats-tables {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.stat-table-card {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
}

.stat-table-card h4 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
}

.stat-table-card h4 i {
  color: var(--brand-primary);
}

.stats-empty {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
}

.stats-empty i {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
  opacity: 0.5;
}

.stats-empty p {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

/* ==================== 
   Export Page
   ==================== */
.export-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.export-card {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.export-card:hover {
  transform: translateY(-8px);
}

.export-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  transition: transform var(--transition-fast);
}

.export-card:hover .export-icon {
  transform: scale(1.1);
}

.export-icon.pdf {
  background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
}

.export-icon.csv {
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
}

.export-icon.json {
  background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
}

.export-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.export-card p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--space-lg);
}

/* ==================== 
   Toast Notifications
   ==================== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--glass-shadow);
  min-width: 300px;
  animation: slideInRight 0.3s ease;
}

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--error);
}

.toast.warning {
  border-left: 4px solid var(--warning);
}

.toast.info {
  border-left: 4px solid var(--info);
}

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

.toast-icon {
  font-size: 1.25rem;
}

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

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.toast-message {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: color var(--transition-fast);
}

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

/* ==================== 
   Loading Overlay
   ==================== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.loading-overlay.show {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  text-align: center;
}

.spinner-ring {
  width: 60px;
  height: 60px;
  border: 3px solid var(--border-color);
  border-top-color: var(--brand-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-md);
}

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

.spinner-text {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ==================== 
   Modal
   ==================== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.show {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  width: 90%;
  max-width: 400px;
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.modal.show .modal-content {
  transform: scale(1);
}

.modal-icon {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.modal-icon.warning {
  background: rgba(237, 137, 54, 0.1);
  color: var(--warning);
}

.modal-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.modal-actions button {
  min-width: 100px;
}

/* ==================== 
   Responsive Design
   ==================== */
@media (max-width: 1200px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .charts-row {
    grid-template-columns: 1fr;
  }
  
  .export-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .sidebar-toggle {
    display: block;
  }
  
  .stats-summary,
  .stats-charts,
  .stats-tables {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .export-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-bar .filter-group {
    flex-direction: column;
    align-items: stretch;
  }
  
  .table-filters {
    flex-direction: column;
    width: 100%;
  }
  
  .filter-group input {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .auth-card {
    padding: var(--space-lg);
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-row {
    grid-template-columns: 1fr;
  }
  
  .top-bar {
    flex-wrap: wrap;
    gap: var(--space-md);
  }
  
  .tab-content {
    padding: var(--space-md);
  }
}

/* ==================== 
   Print Styles
   ==================== */
@media print {
  .sidebar,
  .top-bar,
  .theme-toggle,
  .toast-container,
  .table-filters,
  .form-actions,
  .btn-logout,
  .sidebar-toggle {
    display: none !important;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .glass {
    background: white;
    border: 1px solid #ddd;
    box-shadow: none;
  }
}