/* 现代化增强样式 - 基于原有设计的升级版本 */

:root {
    /* 扩展色彩系统 */
    --primary-50: #f0fdfa;
    --primary-100: #ccfbf1;
    --primary-200: #99f6e4;
    --primary-300: #5eead4;
    --primary-400: #2dd4bf;
    --primary-500: #14b8a6;
    --primary-600: #0d9488;
    --primary-700: #0f766e;
    --primary-800: #115e59;
    --primary-900: #134e4a;
    
    /* 中性色扩展 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* 语义化颜色 */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* 阴影系统 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 动画 */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

/* 全局动画 */
* {
    transition: background-color var(--transition-normal), 
                border-color var(--transition-normal),
                color var(--transition-normal),
                box-shadow var(--transition-normal),
                transform var(--transition-fast);
}

/* 增强的滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

/* 增强的头部设计 */
.site-header {
    background: linear-gradient(135deg, var(--primary-800) 0%, var(--primary-900) 100%);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.2), 
        transparent);
}

/* 增强的导航链接 */
.nav-block a {
    position: relative;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    overflow: hidden;
}

.nav-block a::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.1), 
        transparent);
    transition: left var(--transition-slow);
}

.nav-block a:hover::before {
    left: 100%;
}

.nav-block a:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.nav-em {
    background: rgba(255, 255, 255, 0.15) !important;
    box-shadow: var(--shadow-sm);
}

/* 增强的卡片设计 */
.card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        var(--primary-400), 
        var(--primary-600), 
        var(--primary-400));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover::before {
    opacity: 1;
}

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

/* 增强的表单控件 */
input[type="text"],
input[type="number"],
input[type="date"],
input[type="search"],
select,
textarea {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    position: relative;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
    transform: scale(1.02);
}

/* 增强的按钮设计 */
.btn {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.2), 
        transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--gray-500), var(--gray-600));
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--gray-600), var(--gray-700));
}

/* 增强的表格设计 */
.table-wrap {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    background: white;
    overflow: hidden;
}

table {
    border: none;
    box-shadow: none;
}

th {
    background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
    color: var(--gray-700);
    border-bottom: 2px solid var(--primary-200);
}

tbody tr {
    transition: all var(--transition-fast);
}

tbody tr:hover {
    background: var(--primary-50);
    transform: scale(1.01);
}

/* 增强的Flash消息 */
.flash {
    border-radius: var(--radius-md);
    border-left: 4px solid;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.flash::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
}

.flash-success {
    background: linear-gradient(135deg, var(--success-light), rgba(209, 250, 229, 0.5));
    border-left-color: var(--success);
    color: var(--success);
}

.flash-error {
    background: linear-gradient(135deg, var(--error-light), rgba(254, 226, 226, 0.5));
    border-left-color: var(--error);
    color: var(--error);
}

.flash-info {
    background: linear-gradient(135deg, var(--info-light), rgba(219, 234, 254, 0.5));
    border-left-color: var(--info);
    color: var(--info);
}

/* 加载动画 */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.spinner {
    animation: spin 1s linear infinite;
}

/* 微交互增强 */
.btn, .nav-block a, input, select, textarea {
    transition: all var(--transition-fast);
}

/* 响应式增强 */
@media (max-width: 640px) {
    .card {
        border-radius: var(--radius);
        margin: 0 -0.5rem;
    }
    
    .btn {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
    
    .nav-block {
        gap: 0.25rem;
    }
    
    .nav-block a {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0f172a;
        --surface: #1e293b;
        --text: #f1f5f9;
        --muted: #94a3b8;
        --border: #334155;
    }
    
    .card {
        background: rgba(30, 41, 59, 0.95);
        border: 1px solid rgba(51, 65, 85, 0.5);
    }
    
    input, select, textarea {
        background: rgba(30, 41, 59, 0.9);
        border-color: var(--border);
        color: var(--text);
    }
}

/* 特殊效果 */
.glow {
    box-shadow: 0 0 20px rgba(20, 184, 166, 0.3);
}

.shine {
    position: relative;
    overflow: hidden;
}

.shine::after {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 70%
    );
    transform: rotate(45deg) translateX(-100%);
    transition: transform 0.6s;
}

.shine:hover::after {
    transform: rotate(45deg) translateX(100%);
}

/* 工具提示 */
.tooltip {
    position: relative;
}

.tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-800);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    z-index: 1000;
}

.tooltip:hover::before {
    opacity: 1;
}

/* 进度条 */
.progress {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-400), var(--primary-600));
    border-radius: var(--radius);
    transition: width var(--transition-normal);
}

/* 标签 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 999px;
    background: var(--primary-100);
    color: var(--primary-800);
    border: 1px solid var(--primary-200);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
    border-color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
    border-color: var(--warning);
}

.badge-error {
    background: var(--error-light);
    color: var(--error);
    border-color: var(--error);
}