/* 卡密管理系统 - 现代化UI样式 */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #64748b;
    --success: #10b981;
    --info: #06b6d4;
    --warning: #f59e0b;
    --danger: #ef4444;
    --light: #f8fafc;
    --dark: #0f172a;
    --border-radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* 全局样式 */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

/* 主容器 */
.container-fluid, .container {
    padding-left: 2rem;
    padding-right: 2rem;
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow);
    padding: 1rem 0;
}

.navbar-brand {
    color: var(--primary) !important;
    font-weight: 700;
    font-size: 1.5rem;
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--primary-dark) !important;
}

.navbar-nav .nav-link {
    color: var(--secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-decoration: none;
}

.navbar-nav .nav-link:hover {
    background: var(--light);
    color: var(--primary) !important;
    transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
    background: var(--primary);
    color: white !important;
}

.navbar-toggler {
    border: none;
    padding: 0.25rem 0.5rem;
}

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

/* 卡片样式 */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    transition: var(--transition);
    overflow: hidden;
}

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

.card-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    font-weight: 600;
    padding: 1.5rem;
}

.card-body {
    padding: 2rem;
}

.card-title {
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1.5rem;
}

/* 统计卡片 */
.stat-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow);
}

.stat-card:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
    display: block;
}

.stat-card .stat-label {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

.stat-card.stat-success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.stat-card.stat-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
}

.stat-card.stat-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}

.stat-card.stat-info {
    background: linear-gradient(135deg, var(--info) 0%, #0891b2 100%);
}

/* 按钮样式 */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
    text-decoration: none;
}

.btn:focus {
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
    color: white;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
    color: white;
}

.btn-info {
    background: linear-gradient(135deg, var(--info) 0%, #0891b2 100%);
    color: white;
}

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

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* 表格样式 */
.table-responsive {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    background: white;
}

.table {
    margin-bottom: 0;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table thead th {
    background: var(--light);
    border: none;
    font-weight: 600;
    color: var(--dark);
    padding: 1rem 1.5rem;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

.table tbody td {
    border: none;
    padding: 1rem 1.5rem;
    vertical-align: middle;
    font-weight: 500;
}

.table tbody tr {
    transition: var(--transition);
    border-bottom: 1px solid #f1f5f9;
}

.table tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
    transform: scale(1.01);
}

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

/* 表单样式 */
.form-control, .form-select {
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-weight: 500;
    transition: var(--transition);
    font-size: 1rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-text {
    font-size: 0.875rem;
    color: var(--secondary);
    margin-top: 0.25rem;
}

/* 输入组样式 */
.input-group {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* 警告框样式 */
.alert {
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-left-color: var(--success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border-left-color: var(--danger);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
    border-left-color: var(--warning);
}

.alert-info {
    background: rgba(6, 182, 212, 0.1);
    color: var(--info);
    border-left-color: var(--info);
}

.alert-dismissible .btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    opacity: 0.7;
}

.alert-dismissible .btn-close:hover {
    opacity: 1;
}

/* 状态标签 */
.badge {
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-unused { 
    background: #f1f5f9; 
    color: var(--secondary); 
}

.status-active { 
    background: #dcfce7; 
    color: var(--success); 
}

.status-expired { 
    background: #fef2f2; 
    color: var(--danger); 
}

.status-blocked { 
    background: #fef3c7; 
    color: var(--warning); 
}

/* 分页样式 */
.pagination {
    gap: 0.5rem;
}

.page-link {
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    font-weight: 500;
    color: var(--secondary);
    transition: var(--transition);
    text-decoration: none;
}

.page-link:hover {
    background: var(--light);
    color: var(--primary);
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: var(--primary);
    color: white;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

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

/* 代码样式 */
code {
    background: #f1f5f9;
    color: var(--primary);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
    font-weight: 600;
}

.license-key {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875rem;
    background: var(--light);
    padding: 0.5rem;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
}

/* 页脚 */
.footer {
    background: rgba(255, 255, 255, 0.9) !important;
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--secondary);
    font-weight: 500;
    padding: 2rem 0;
    margin-top: 4rem;
}

/* 工具提示 */
.tooltip-inner {
    background: var(--dark);
    border-radius: var(--border-radius);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* 进度条 */
.progress {
    height: 8px;
    border-radius: 50px;
    background: #e2e8f0;
    overflow: hidden;
}

.progress-bar {
    border-radius: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    transition: width 0.6s ease;
}

/* 动画效果 */
.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

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

/* 复制效果 */
.copy-success {
    animation: copySuccess 2s ease-out;
}

@keyframes copySuccess {
    0% { background: var(--success); color: white; }
    100% { background: initial; color: initial; }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 登录页面 */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-card {
    max-width: 400px;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 3rem;
}

.login-card .card-title {
    text-align: center;
    color: var(--primary);
    font-size: 2rem;
    margin-bottom: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container-fluid, .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .stat-card {
        padding: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .stat-card .stat-number {
        font-size: 2rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem !important;
        margin: 0.25rem 0;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .table thead th,
    .table tbody td {
        padding: 0.75rem;
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .login-card {
        padding: 2rem;
        margin: 1rem;
    }
}

@media (max-width: 576px) {
    .stat-card .stat-number {
        font-size: 1.75rem;
    }
    
    .stat-card .stat-label {
        font-size: 0.875rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card-title {
        font-size: 1.25rem;
    }
}

/* 特殊效果 */
.glass-effect {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 加载状态 */
.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}