/* Custom UI Styles - Modern, Clean & Responsive */

/* Global Styles */
:root {
  /* Color Palette - Modern Business Theme */
  --primary-color: #1a73e8;
  --primary-dark: #0d47a1;
  --primary-light: #e8f0fe;
  --secondary-color: #34a853;
  --accent-color: #fbbc04;
  --background-color: #ffffff;
  --text-color: #202124;
  --text-secondary: #5f6368;
  --title-color: #ffffff;
  --light-text: #80868b;
  --border-color: #dadce0;
  --success-color: #34a853;
  --warning-color: #fbbc04;
  --danger-color: #ea4335;
  --info-color: #1a73e8;
  
  /* Dark Theme Variables */
  --dark-background-color: #121212;
  --dark-text-color: #e0e0e0;
  --dark-text-secondary: #9e9e9e;
  --dark-border-color: #333333;
  --dark-card-bg: #1e1e1e;
  --dark-nav-bg: #1e1e1e;
  
  /* Typography */
  --heading-font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --body-font: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Border Radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.1);
  --shadow-md: 0 2px 6px rgba(60, 64, 67, 0.15);
  --shadow-lg: 0 4px 12px rgba(60, 64, 67, 0.2);
}

/* Base Styles - Modern Business */
body {
  font-family: var(--body-font);
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-color);
  letter-spacing: -0.02em;
  line-height: 1.3;
}

h1 {
  font-size: 2.25rem;
  font-weight: 700;
}

h2 {
  font-size: 1.75rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

/* Add smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Theme Switch Styles */
.theme-switch-wrapper {
  display: flex;
  align-items: center;
  margin-left: 1rem;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--primary-color);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

/* Dark Theme Styles */
[data-theme="dark"] {
  --background-color: var(--dark-background-color);
  --text-color: var(--dark-text-color);
  --text-secondary: var(--dark-text-secondary);
  --border-color: var(--dark-border-color);
}

[data-theme="dark"] body {
  background-color: var(--dark-background-color);
  color: var(--dark-text-color);
}

[data-theme="dark"] .card {
  background-color: var(--dark-card-bg);
  color: var(--dark-text-color);
}

[data-theme="dark"] .custom-navbar {
  background-color: var(--dark-nav-bg);
  border-bottom-color: var(--dark-border-color);
}

[data-theme="dark"] .table {
  background-color: var(--dark-card-bg);
  color: var(--dark-text-color);
}

[data-theme="dark"] .table thead th {
  background-color: rgba(255, 255, 255, 0.05);
  border-bottom-color: var(--dark-border-color);
}

/* Container Modifications - Modern Business */
.container {
  padding: 0 var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.container-fluid {
  padding: 0 var(--spacing-lg);
}

/* Section spacing */
.section {
  padding: 4rem 0;
}

.section-sm {
  padding: 2rem 0;
}

.section-lg {
  padding: 6rem 0;
}

/* Page header */
.page-header {
  padding: 2rem 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  margin-bottom: 0.5rem;
}

.page-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Card Styles */
.card {
  background: #fff;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: none;
  margin-bottom: var(--spacing-md);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding: var(--spacing-md) var(--spacing-lg);
}

.card-body {
  padding: var(--spacing-lg);
}

/* Button Styles - Modern Business */
.btn {
  padding: 0.5rem 1.25rem;
  border-radius: var(--border-radius-md);
  font-weight: 500;
  transition: all 0.2s ease;
  text-transform: none;
  letter-spacing: 0.01em;
  box-shadow: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
}

.btn-primary:focus {
  box-shadow: 0 0 0 0.25rem rgba(26, 115, 232, 0.25);
}

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

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Form Controls */
.form-control {
  border-radius: var(--border-radius-sm);
  border: 1px solid #ddd;
  padding: 0.5rem 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus {
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

/* Table Styles */
.table {
  background: #fff;
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.table thead th {
  background-color: rgba(0, 0, 0, 0.02);
  border-bottom: 2px solid rgba(0, 0, 0, 0.05);
  font-weight: 600;
}

/* Navigation - Modern Business Style */
.custom-navbar {
  background-color: #fff;
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border-color);
}

.custom-navbar .navbar-brand {
  font-weight: 600;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  letter-spacing: -0.5px;
}

.custom-navbar .navbar-brand img {
  margin-right: 0.5rem;
  height: 30px;
}

.custom-navbar .nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: all 0.2s ease;
  position: relative;
}

.custom-navbar .nav-link:hover {
  color: var(--primary-color);
}

.custom-navbar .nav-link:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.custom-navbar .nav-link:hover:after {
  width: 70%;
}

.custom-navbar .nav-btn {
  padding: 0.375rem 1rem;
  font-weight: 500;
  margin-left: 0.5rem;
  position: relative;
  border-radius: 5px;
  transition: all 0.3s ease;
  overflow: hidden;
}

/* 登录按钮样式 */
.custom-navbar .nav-btn-outline {
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  background-color: transparent;
}

.custom-navbar .nav-btn-outline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.custom-navbar .nav-btn-outline:hover {
  color: var(--primary-color);
  background-color: transparent;
}

.custom-navbar .nav-btn-outline:hover::after {
  width: 80%;
}

/* 注册按钮样式 */
.custom-navbar .nav-btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: 1px solid var(--primary-color);
}

.custom-navbar .nav-btn-primary::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: white;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.custom-navbar .nav-btn-primary:hover {
  background-color: var(--primary-color);
  color: white;
}

.custom-navbar .nav-btn-primary:hover::after {
  width: 80%;
}

.custom-navbar .nav-dropdown-menu {
  border: none;
  box-shadow: var(--shadow-md);
  border-radius: var(--border-radius-md);
  padding: 0.5rem 0;
  min-width: 200px;
}

.custom-navbar .nav-dropdown-item {
  padding: 0.5rem 1.25rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
}

.custom-navbar .nav-dropdown-item:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.custom-navbar .nav-dropdown-item i {
  margin-right: 0.5rem;
  width: 1.25rem;
  text-align: center;
}

.custom-navbar .nav-dropdown-divider {
  margin: 0.25rem 0;
  border-top: 1px solid var(--border-color);
}

.custom-navbar .navbar-toggler {
  border: none;
  padding: 0.25rem;
  color: var(--primary-color);
}

.custom-navbar .navbar-toggler:focus {
  box-shadow: none;
  outline: none;
}

/* User Navigation Styles */
.custom-navbar .user-nav {
  display: flex;
  align-items: center;
}

.custom-navbar .user-nav-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  color: var(--text-color);
  font-weight: 500;
  text-decoration: none;
}

.custom-navbar .user-nav-link i {
  margin-right: 0.5rem;
  font-size: 1.1rem;
}

.custom-navbar .user-nav-link:hover {
  color: var(--primary-color);
}

/* Alerts - Modern Business Style */
.alert {
  border: none;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  border-left: 4px solid transparent;
}

.alert-dismissible {
  padding-right: 3rem;
}

.alert .btn-close {
  background: none;
  opacity: 0.5;
  font-size: 1rem;
}

.alert .btn-close:hover {
  opacity: 0.75;
}

.alert-primary {
  background-color: rgba(26, 115, 232, 0.08);
  color: var(--primary-color);
  border-left-color: var(--primary-color);
}

.alert-success {
  background-color: rgba(52, 168, 83, 0.08);
  color: var(--success-color);
  border-left-color: var(--success-color);
}

.alert-danger {
  background-color: rgba(234, 67, 53, 0.08);
  color: var(--danger-color);
  border-left-color: var(--danger-color);
}

.alert-warning {
  background-color: rgba(251, 188, 4, 0.08);
  color: #d97706;
  border-left-color: var(--warning-color);
}

/* Badges */
.badge {
  padding: 0.4em 0.8em;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
}

/* Progress Bars */
.progress {
  height: 0.8rem;
  border-radius: var(--border-radius-sm);
  background-color: rgba(0, 0, 0, 0.05);
}

/* Responsive Utilities */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-sm);
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  h1 {
    font-size: 1.8rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
}

/* Dashboard Specific Styles */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.stat-card {
  background: #fff;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.stat-card h3 {
  font-size: 1rem;
  color: var(--light-text);
  margin-bottom: var(--spacing-sm);
}

.stat-card .value {
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary-color);
}

/* Charts and Graphs */
.chart-container {
  background: #fff;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

/* Utility Classes */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

.rounded-sm { border-radius: var(--border-radius-sm) !important; }
.rounded-md { border-radius: var(--border-radius-md) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Footer Styles - Modern Business */
.footer {
  background-color: var(--background-color);
  color: var(--text-secondary);
}

.footer-main {
  position: relative;
}

.footer-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.footer-description {
  font-size: 0.95rem;
  opacity: 0.9;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  transition: all 0.2s ease;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--primary-color);
  text-decoration: none;
  padding-left: 5px;
}

.footer-links i {
  font-size: 0.8rem;
  width: 20px;
}

.social-links a {
  transition: all 0.2s ease;
}

.social-links a:hover {
  color: var(--primary-color) !important;
  transform: translateY(-2px);
}

.footer-bottom {
  background-color: var(--background-color);
}

.footer-bottom a:hover {
  color: var(--primary-color) !important;
}

/* Print Styles */
@media print {
  .no-print {
    display: none !important;
  }
  
  .card {
    box-shadow: none !important;
    border: 1px solid #ddd;
  }
  
  body {
    background-color: #fff;
  }
}

.toast {
  animation: fadeIn 0.3s ease-in;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

@keyframes toast-fadein {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-fadeout {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}