/* ===========================
   主题样式
   =========================== */

/* 浅色主题 (默认) */

:root {
    color-scheme: light;
}

body {
    background-color: #ffffff;
    color: #333333;
}

.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar a,
.navbar-brand {
    color: white;
}

.navbar a:hover {
    color: #f0f0f0;
}

.sidebar {
    background-color: #f5f5f5;
    border-right: 1px solid #e0e0e0;
}

.sidebar-menu a {
    color: #333333;
}

.sidebar-menu a:hover {
    background-color: #e8e8e8;
}

.sidebar-menu a.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.page-content {
    background-color: #ffffff;
}

.card {
    background: white;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.card-header {
    background-color: #f5f5f5;
    border-bottom: 1px solid #e0e0e0;
}

.card-footer {
    background-color: #f5f5f5;
    border-top: 1px solid #e0e0e0;
}

.form-control {
    background-color: white;
    border: 1px solid #e0e0e0;
    color: #333333;
}

.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-label {
    color: #333333;
}

.btn-secondary {
    background-color: #f5f5f5;
    color: #333333;
    border: 1px solid #e0e0e0;
}

.btn-secondary:hover {
    background-color: #e8e8e8;
}

.alert {
    border-radius: 0.5rem;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeaa7;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

/* ===========================
   深色主题
   =========================== */

body.dark-theme {
    background-color: #1a1a1a;
    color: #e0e0e0;
}

body.dark-theme .navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-theme .sidebar {
    background-color: #2a2a2a;
    border-right: 1px solid #404040;
}

body.dark-theme .sidebar-menu a {
    color: #e0e0e0;
}

body.dark-theme .sidebar-menu a:hover {
    background-color: #3a3a3a;
}

body.dark-theme .page-content {
    background-color: #1a1a1a;
}

body.dark-theme .card {
    background: #2a2a2a;
    border: 1px solid #404040;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-theme .card-header {
    background-color: #333333;
    border-bottom: 1px solid #404040;
}

body.dark-theme .card-footer {
    background-color: #333333;
    border-top: 1px solid #404040;
}

body.dark-theme .form-control {
    background-color: #333333;
    border: 1px solid #404040;
    color: #e0e0e0;
}

body.dark-theme .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

body.dark-theme .form-label {
    color: #e0e0e0;
}

body.dark-theme .btn-secondary {
    background-color: #333333;
    color: #e0e0e0;
    border: 1px solid #404040;
}

body.dark-theme .btn-secondary:hover {
    background-color: #3a3a3a;
}

body.dark-theme .text-muted {
    color: #999999;
}

body.dark-theme .alert-success {
    background-color: #1e4620;
    border-color: #2d5a2d;
    color: #90ee90;
}

body.dark-theme .alert-danger {
    background-color: #4a1f1f;
    border-color: #6b2c2c;
    color: #ff6b6b;
}

body.dark-theme .alert-warning {
    background-color: #4a4a1f;
    border-color: #6b6b2c;
    color: #ffff99;
}

body.dark-theme .alert-info {
    background-color: #1f3a4a;
    border-color: #2c5a6b;
    color: #99ddff;
}

/* ===========================
   渐变背景
   =========================== */

.gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-success {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.gradient-danger {
    background: linear-gradient(135deg, #dc3545 0%, #fd7e14 100%);
}

.gradient-warning {
    background: linear-gradient(135deg, #ffc107 0%, #ff9800 100%);
}

/* ===========================
   动画
   =========================== */

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

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

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

.slide-in-up {
    animation: slideInUp 0.3s ease-out;
}

.slide-in-down {
    animation: slideInDown 0.3s ease-out;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ===========================
   过渡效果
   =========================== */

.transition-all {
    transition: all 0.3s ease;
}

.transition-colors {
    transition: background-color 0.3s ease, color 0.3s ease;
}

.transition-transform {
    transition: transform 0.3s ease;
}

/* ===========================
   状态指示器
   =========================== */

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.status-active {
    background-color: #d4edda;
    color: #155724;
}

.status-inactive {
    background-color: #f8d7da;
    color: #721c24;
}

.status-pending {
    background-color: #fff3cd;
    color: #856404;
}

.status-expired {
    background-color: #e2e3e5;
    color: #383d41;
}

body.dark-theme .status-active {
    background-color: #1e4620;
    color: #90ee90;
}

body.dark-theme .status-inactive {
    background-color: #4a1f1f;
    color: #ff6b6b;
}

body.dark-theme .status-pending {
    background-color: #4a4a1f;
    color: #ffff99;
}

body.dark-theme .status-expired {
    background-color: #3a3a3a;
    color: #b0b0b0;
}

/* ===========================
   加载骨架屏
   =========================== */

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

body.dark-theme .skeleton {
    background: linear-gradient(90deg, #3a3a3a 25%, #4a4a4a 50%, #3a3a3a 75%);
}

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

.skeleton-text {
    height: 1rem;
    border-radius: 0.25rem;
    margin-bottom: 0.5rem;
}

.skeleton-avatar {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
}

.skeleton-card {
    height: 200px;
    border-radius: 0.75rem;
}