/* 尼采通运费计算器 - 额外样式 */

/* 自定义动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0, -4px, 0);
    }
}

/* 页面加载动画 */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 渐变背景 */
.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-text {
    background: linear-gradient(135deg, #2563eb, #f97316);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 卡片阴影效果 */
.card-shadow {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.3s ease;
}

.card-shadow:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 按钮悬停效果 */
.btn-hover-effect {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-hover-effect:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-hover-effect::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 0.5s;
}

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

/* 输入框聚焦效果 */
.input-focus {
    transition: all 0.3s ease;
}

.input-focus:focus {
    transform: scale(1.02);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 结果卡片动画 */
.result-card {
    animation: fadeInUp 0.5s ease-out;
    transition: all 0.3s ease;
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* 最优选择闪烁效果 */
.best-price {
    position: relative;
    animation: pulse 2s infinite;
}

.best-price::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #10b981, #34d399, #10b981);
    border-radius: 12px;
    z-index: -1;
    animation: pulse 2s infinite;
}

/* 价格数字动画 */
.price-number {
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

/* 图标旋转动画 */
.icon-spin {
    animation: spin 2s linear infinite;
}

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

/* 响应式调整 */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .result-card {
        margin-bottom: 1rem;
    }
    
    .gradient-bg {
        padding: 1rem 0;
    }
    
    .card-shadow {
        margin: 0.5rem 0;
    }
}

/* 打印样式 */
@media print {
    .no-print {
        display: none !important;
    }
    
    .result-card {
        border: 2px solid #000 !important;
        margin-bottom: 1rem;
        page-break-inside: avoid;
    }
    
    .gradient-bg {
        background: #f8f9fa !important;
        color: #000 !important;
    }
}

/* 深色模式支持（可选） */
@media (prefers-color-scheme: dark) {
    .dark-mode-support {
        background-color: #1f2937;
        color: #f9fafb;
    }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}

/* 加载动画 */
.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

/* 错误状态 */
.error-state {
    border-color: #ef4444 !important;
    background-color: #fef2f2 !important;
}

.error-message {
    color: #dc2626;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* 成功状态 */
.success-state {
    border-color: #10b981 !important;
    background-color: #f0fdf4 !important;
}

/* 焦点可访问性 */
*:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* 禁用状态 */
.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* 工具提示 */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #555;
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 5px 10px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.875rem;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* 表格样式（如果需要） */
.custom-table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
}

.custom-table th,
.custom-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

.custom-table th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.custom-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.custom-table tr:hover {
    background-color: #f5f5f5;
}