/**
 * 授权管理系统 - 现代化样式表
 * Version: 2.0
 */

:root {
    /* 主色调 */
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #6366f1;
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    
    /* 辅助色 */
    --secondary: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* 中性色 */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 过渡 */
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

/* ============================================================
   基础样式
   ============================================================ */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-700);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e9f2 100%);
    min-height: 100vh;
    margin: 0;
}

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

a:hover {
    color: var(--primary-dark);
}

/* ============================================================
   导航栏
   ============================================================ */
.navbar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: var(--shadow-lg);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand i {
    font-size: 1.5rem;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
}

/* ============================================================
   卡片
   ============================================================ */
.card {
    background: #fff;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition-slow);
    overflow: hidden;
}

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

.card-header {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    padding: 1rem 1.25rem;
}

/* 统计卡片 */
.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-card .icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.stat-card .icon.primary {
    background: var(--primary-100);
    color: var(--primary);
}

.stat-card .icon.success {
    background: #d1fae5;
    color: var(--success);
}

.stat-card .icon.warning {
    background: #fef3c7;
    color: var(--warning);
}

.stat-card .icon.danger {
    background: #fee2e2;
    color: var(--danger);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    line-height: 1.2;
}

.stat-card .stat-label {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius);
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: #fff;
}

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

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

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

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

/* ============================================================
   表单
   ============================================================ */
.form-control,
.form-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
    font-size: 0.9375rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-100);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--gray-500);
    font-size: 0.8125rem;
}

.input-group-text {
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
}

/* ============================================================
   表格
   ============================================================ */
.table {
    margin-bottom: 0;
}

.table thead th {
    background: var(--gray-50);
    border-bottom: 2px solid var(--gray-200);
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-100);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

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

/* ============================================================
   徽章
   ============================================================ */
.badge {
    font-weight: 500;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
}

.badge-success, .bg-success {
    background: #d1fae5 !important;
    color: #065f46 !important;
}

.badge-warning, .bg-warning {
    background: #fef3c7 !important;
    color: #92400e !important;
}

.badge-danger, .bg-danger {
    background: #fee2e2 !important;
    color: #991b1b !important;
}

.badge-secondary, .bg-secondary {
    background: var(--gray-200) !important;
    color: var(--gray-600) !important;
}

.badge-primary, .bg-primary {
    background: var(--primary-100) !important;
    color: var(--primary-dark) !important;
}

/* ============================================================
   代码块
   ============================================================ */
code {
    font-family: var(--font-mono);
    background: var(--gray-100);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.875em;
    color: var(--danger);
}

pre {
    background: var(--gray-800);
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--radius);
    overflow-x: auto;
}

pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

/* ============================================================
   授权密钥
   ============================================================ */
.license-key {
    font-family: var(--font-mono);
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
    color: #10b981;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.license-key .key-text {
    font-size: 0.875rem;
    word-break: break-all;
}

.license-key .copy-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.license-key .copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--gray-500);
}

.empty-state .icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h5 {
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

/* ============================================================
   加载状态
   ============================================================ */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================================
   提示消息
   ============================================================ */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
}

.toast {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    padding: 1rem 1.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
}

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

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

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

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

/* ============================================================
   页脚
   ============================================================ */
.footer {
    background: #fff;
    border-top: 1px solid var(--gray-200);
    padding: 1.5rem 0;
    margin-top: 3rem;
}

.footer p {
    margin: 0;
    color: var(--gray-500);
}

/* ============================================================
   登录/注册页面
   ============================================================ */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.auth-header {
    background: linear-gradient(135deg, var(--gray-50) 0%, #fff 100%);
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid var(--gray-100);
}

.auth-header .logo {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.auth-header h3 {
    margin: 0;
    color: var(--gray-800);
}

.auth-header p {
    margin: 0.5rem 0 0;
    color: var(--gray-500);
}

.auth-body {
    padding: 2rem;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
    }
}

/* ============================================================
   动画
   ============================================================ */
.fade-in {
    animation: fadeIn 0.5s ease;
}

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

.slide-up {
    animation: slideUp 0.5s ease;
}

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

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

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* ============================================================
   工具类
   ============================================================ */
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }
.text-muted { color: var(--gray-500) !important; }

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

.rounded-xl { border-radius: var(--radius-xl) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }