/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #FFD700;
    --secondary-color: #F5F5DC;
    --success-color: #90EE90;
    --danger-color: #FFB6C1;
    --warning-color: #FFD700;
    --info-color: #87CEEB;
    --dark-color: #2c3e50;
    --light-color: #FFFAF0;
    --bg-color: #F5F5DC;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: #F5F5DC;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-color);
    color: #333;
    font-weight: 600;
}

.btn-primary:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--secondary-color);
    color: #333;
    border: 1px solid #ddd;
}

.btn-secondary:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-success {
    background: var(--success-color);
    color: #333;
}

.btn-danger {
    background: var(--danger-color);
    color: #333;
}

.btn-warning {
    background: var(--warning-color);
    color: #333;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Toast 提示 */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    z-index: 10000;
    opacity: 0;
    transform: translateX(400px);
    transition: var(--transition);
    max-width: 300px;
    font-size: 14px;
    line-height: 1.4;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.toast.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.toast.warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.toast.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #999;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
}

.modal-close:hover {
    color: #333;
}

.modal-body {
    margin-bottom: 20px;
}

.modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .toast {
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 14px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

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

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

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

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