/* 考立佳教育平台 - 全局样式 */

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f59e0b;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-bg: #1a1a2e;
    --light-bg: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --glass-bg: rgba(255, 255, 255, 0.95);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Logo 组件 */
.brand-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px 30px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 8px 16px var(--shadow-color);
    margin-bottom: 30px;
    animation: slideDown 0.5s ease-out;
}

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

.brand-logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.brand-name {
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    animation: shimmer 3s infinite;
}

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

.brand-tagline {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 1px;
}

/* 卡片样式 */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 8px 20px var(--shadow-color);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px var(--shadow-color));
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.card-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 按钮样式 */
.btn {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    border: none;
    border-radius: 12px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.4);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.btn-success {
    background: linear-gradient(135deg, #28a745, #20bf6b);
}

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

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

/* 输入框样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: var(--light-bg);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2);
}

.form-select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    background: var(--light-bg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--glass-bg);
}

.data-table thead {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
}

.data-table th {
    padding: 16px 20px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 15px;
}

.data-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
}

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

/* 统计卡片样式 */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 8px 20px var(--shadow-color));
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px var(--shadow-color));
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 15px 0;
    line-height: 1.2;
}

.stat-label {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 5px;
}

.stat-trend {
    font-size: 14px;
    font-weight: 600;
    color: var(--success-color);
    margin-top: 5px;
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 10px;
}

.badge-primary {
    background: var(--primary-color);
    color: white;
}

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

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

/* 分隔线样式 */
.divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    margin: 30px 0;
}

.divider-thick {
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    margin: 30px 0;
}

/* 加载动画 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 警告提示 */
.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-info {
    background: rgba(102, 126, 234, 0.1);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    border: 2px solid var(--success-color);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    border: 2px solid var(--warning-color);
    color: var(--warning-color);
}

.alert-error {
    background: rgba(220, 53, 69, 0.1);
    border: 2px solid var(--danger-color);
    color: var(--danger-color);
}

/* 动态效果 */
.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

.animate-slide-up {
    animation: slideUp 0.6s ease-out;
}

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

/* 粒子背景 */
.particle {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle span {
    position: absolute;
    bottom: -50px;
    color: rgba(255, 255, 255, 0.3);
    animation: floatUp linear infinite;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        transform: translateY(calc(100vh + 50px)) rotate(360deg);
        opacity: 0;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .brand-header {
        flex-direction: column;
        gap: 10px;
        padding: 15px 20px;
    }

    .brand-name {
        font-size: 24px;
    }

    .stat-grid {
        grid-template-columns: 1fr;
    }

    .card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .brand-name {
        font-size: 20px;
    }

    .stat-number {
        font-size: 36px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}