/* 模态框基础样式 - 统一所有模态框的通用样式 */

/* 通用模态框遮罩层 */
.modal-base-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

/* 激活状态 */
.modal-base-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 通用模态框内容容器 */
.modal-base-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-xl);
}

/* 激活状态下的内容动画 */
.modal-base-overlay.active .modal-base-content {
    transform: scale(1) translateY(0);
}

/* 通用关闭按钮 */
.modal-base-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--bg-hover);
    color: var(--text-secondary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    font-size: 1.125rem;
}

.modal-base-close:hover {
    background: var(--error-color);
    color: white;
    transform: scale(1.1);
}

/* 模态框内容区域基础样式 */
.modal-base-body {
    padding: var(--spacing-xl);
}

/* 模态框头部基础样式 */
.modal-base-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.modal-base-header h2,
.modal-base-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-weight: 600;
}

/* 模态框底部基础样式 */
.modal-base-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* 尺寸变体 */
.modal-base-content.small {
    width: 400px;
    max-width: 90vw;
}

.modal-base-content.medium {
    width: 500px;
    max-width: 90vw;
}

.modal-base-content.large {
    width: 700px;
    max-width: 90vw;
}

.modal-base-content.extra-large {
    width: 900px;
    max-width: 95vw;
}

/* z-index 层级变体 */
.modal-base-overlay.high-priority {
    z-index: 3000;
}

.modal-base-overlay.critical {
    z-index: 5000;
}

.modal-base-overlay.payment {
    z-index: 10000;
}

/* 特殊行为变体 */
.modal-base-overlay.no-backdrop-close {
    /* JavaScript 会处理这个类，防止点击遮罩关闭 */
}

.modal-base-overlay.no-esc-close {
    /* JavaScript 会处理这个类，防止 ESC 键关闭 */
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-base-content {
        margin: var(--spacing-md);
        max-width: calc(100vw - var(--spacing-xl));
        border-radius: var(--radius-lg);
    }
    
    .modal-base-body,
    .modal-base-header,
    .modal-base-footer {
        padding: var(--spacing-lg);
    }
    
    .modal-base-close {
        top: var(--spacing-md);
        right: var(--spacing-md);
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .modal-base-content {
        margin: var(--spacing-sm);
        max-width: calc(100vw - var(--spacing-md));
        max-height: calc(100vh - var(--spacing-md));
    }
    
    .modal-base-body,
    .modal-base-header,
    .modal-base-footer {
        padding: var(--spacing-md);
    }
    
    .modal-base-close {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        width: 32px;
        height: 32px;
        font-size: 0.875rem;
    }
}

/* 动画增强 */
@media (prefers-reduced-motion: no-preference) {
    .modal-base-overlay {
        animation: modalFadeIn 0.3s ease-out;
    }
    
    .modal-base-content {
        animation: modalSlideIn 0.3s ease-out;
    }
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modalSlideIn {
    from {
        transform: scale(0.9) translateY(20px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

/* 高对比度和可访问性 */
@media (prefers-contrast: high) {
    .modal-base-overlay {
        background: rgba(0, 0, 0, 0.9);
    }
    
    .modal-base-content {
        border-width: 2px;
    }
    
    .modal-base-close {
        border: 2px solid var(--text-secondary);
    }
}

/* 减少透明度模式 */
@media (prefers-reduced-transparency) {
    .modal-base-overlay {
        backdrop-filter: none;
        background: rgba(0, 0, 0, 0.95);
    }
}