/* 自定义样式文件 */

/* 全局样式 */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 导航栏样式 */
.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: #3b82f6;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 2px solid #3b82f6;
    color: #3b82f6;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #3b82f6;
    color: white;
    transform: translateY(-2px);
}

/* 卡片悬停效果 */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

.gradient-bg-blue {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

.gradient-bg-purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

/* 图标样式 */
.icon-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.icon-circle:hover {
    transform: scale(1.1);
}

/* 文本渐变 */
.text-gradient {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 边框渐变 */
.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%) 1;
}

/* 阴影效果 */
.shadow-custom {
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.shadow-custom-hover:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

/* 响应式图片 */
.responsive-img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* 表单样式 */
.form-input {
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    padding: 12px 16px;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* 标签样式 */
.tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    background: #f3f4f6;
    color: #374151;
    transition: all 0.3s ease;
}

.tag:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
}

/* 进度条 */
.progress-bar {
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    transition: width 0.3s ease;
}

/* 时间轴样式 */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e5e7eb;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 0;
    width: 16px;
    height: 16px;
    background: #3b82f6;
    border-radius: 50%;
    transform: translateX(-50%);
    border: 4px solid white;
    box-shadow: 0 0 0 4px #e5e7eb;
}

/* 统计数字动画 */
.counter {
    font-weight: bold;
    color: #3b82f6;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-dot {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
}

/* 打印样式 */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
    
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
}

/* 无障碍支持 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 焦点样式 */
.focus-visible:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .text-gray-600 {
        color: #000 !important;
    }
    
    .bg-gray-50 {
        background-color: #fff !important;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}