/* Alert 增强样式 - 使警告框更加明显和醒目 */

/* 基础alert增强 */
.alert {
    border-width: 2px !important;
    font-weight: 500 !important;
    font-size: 14px !important;
    line-height: 1.5 !important;
    padding: 15px 20px !important;
    margin-bottom: 20px !important;
    border-radius: 8px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
    position: relative !important;
    animation: alertSlideIn 0.3s ease-out !important;
}

/* Alert 动画效果 */
@keyframes alertSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 右上角定位的警告框 */
.alert-top-right {
    position: fixed !important;
    top: 20px !important;
    right: 20px !important;
    z-index: 9999 !important;
    min-width: 350px !important;
    max-width: 500px !important;
    margin: 0 !important;
    animation: alertSlideInFromTop 0.3s ease-out !important;
}

/* 右上角警告框动画 */
@keyframes alertSlideInFromTop {
    from {
        opacity: 0;
        transform: translateX(100%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0) translateY(0);
    }
}

/* 危险警告框增强 */
.alert-danger {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #ffffff !important;
    border-color: #bd2130 !important;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.3) !important;
}

.alert-danger .alert-link {
    color: #ffffff !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

.alert-danger .btn-close {
    filter: invert(1) brightness(100%) !important;
    opacity: 0.8 !important;
}

.alert-danger .btn-close:hover {
    opacity: 1 !important;
}

/* 成功警告框增强 */
.alert-success {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #ffffff !important;
    border-color: #1e7e34 !important;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3) !important;
}

.alert-success .alert-link {
    color: #ffffff !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

.alert-success .btn-close {
    filter: invert(1) brightness(100%) !important;
    opacity: 0.8 !important;
}

/* 警告警告框增强 */
.alert-warning {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #212529 !important;
    border-color: #e0a800 !important;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.3) !important;
}

.alert-warning .alert-link {
    color: #212529 !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

/* 信息警告框增强 */
.alert-info {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #ffffff !important;
    border-color: #117a8b !important;
    box-shadow: 0 4px 15px rgba(23, 162, 184, 0.3) !important;
}

.alert-info .alert-link {
    color: #ffffff !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

.alert-info .btn-close {
    filter: invert(1) brightness(100%) !important;
    opacity: 0.8 !important;
}

/* 主要警告框增强 */
.alert-primary {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #ffffff !important;
    border-color: #0056b3 !important;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3) !important;
}

.alert-primary .alert-link {
    color: #ffffff !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

.alert-primary .btn-close {
    filter: invert(1) brightness(100%) !important;
    opacity: 0.8 !important;
}

/* 次要警告框增强 */
.alert-secondary {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #ffffff !important;
    border-color: #4e555b !important;
    box-shadow: 0 4px 15px rgba(108, 117, 125, 0.3) !important;
}

.alert-secondary .alert-link {
    color: #ffffff !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

.alert-secondary .btn-close {
    filter: invert(1) brightness(100%) !important;
    opacity: 0.8 !important;
}

/* 浅色警告框增强 */
.alert-light {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #212529 !important;
    border-color: #dae0e5 !important;
    box-shadow: 0 4px 15px rgba(248, 249, 250, 0.3) !important;
}

.alert-light .alert-link {
    color: #212529 !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

/* 深色警告框增强 */
.alert-dark {
    background: linear-gradient(135deg, #667eea 0%, #4cab6f 100%) !important;
    color: #ffffff !important;
    border-color: #1d2124 !important;
    box-shadow: 0 4px 15px rgba(52, 58, 64, 0.3) !important;
}

.alert-dark .alert-link {
    color: #ffffff !important;
    text-decoration: underline !important;
    font-weight: 600 !important;
}

.alert-dark .btn-close {
    filter: invert(1) brightness(100%) !important;
    opacity: 0.8 !important;
}

/* 可关闭警告框增强 */
.alert-dismissible {
    padding-right: 3.5rem !important;
}

.alert-dismissible .btn-close {
    position: absolute !important;
    top: 0 !important;
    right: 0 !important;
    z-index: 2 !important;
    padding: 1.25rem 1rem !important;
    background: transparent !important;
    border: 0 !important;
    font-size: 1.25rem !important;
    line-height: 1 !important;
    opacity: 0.8 !important;
    transition: opacity 0.15s ease-in-out !important;
}

.alert-dismissible .btn-close:hover {
    opacity: 1 !important;
}

/* 图标增强 */
.alert i {
    margin-right: 8px !important;
    font-size: 16px !important;
    vertical-align: middle !important;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .alert {
        font-size: 13px !important;
        padding: 12px 16px !important;
        margin-bottom: 15px !important;
    }
    
    .alert-top-right {
        min-width: 280px !important;
        max-width: 90vw !important;
        top: 20px !important;
        right: 20px !important;
        left: auto !important;
        transform: none !important;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .alert {
        border-width: 3px !important;
        font-weight: 600 !important;
    }
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    .alert {
        animation: none !important;
    }
    
    .alert-dismissible .btn-close {
        transition: none !important;
    }
}