/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 隐藏滚动条 */
.hide-scrollbar::-webkit-scrollbar { 
    display: none; 
}
.hide-scrollbar { 
    -ms-overflow-style: none; 
    scrollbar-width: none; 
}

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

.animate-slide-in { 
    animation: slideIn 0.6s ease-out forwards; 
}

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

.animate-fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

/* 输入框焦点样式 */
input:focus, 
select:focus, 
textarea:focus { 
    border-color: #3b82f6; 
    outline: none; 
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    transition: all 0.3s; 
}

/* 按钮点击效果 */
button:active {
    transform: scale(0.98);
}

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

.hover-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

/* 表单验证样式 */
input:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

input:valid:not(:placeholder-shown) {
    border-color: #22c55e;
}

/* 加载动画 */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading {
    animation: spin 1s linear infinite;
}

/* 模态框动画 */
.modal-enter {
    animation: modalEnter 0.3s ease-out forwards;
}

@keyframes modalEnter {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 价格数字动画 */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.price-update {
    animation: countUp 0.5s ease-out forwards;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 打印样式 */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
}

/* 评价卡片悬停效果 */
#reviews .group {
    transition: all 0.3s ease;
}

#reviews .group:hover {
    border-color: #3b82f6;
}

/* 星星图标对齐 */
#reviews .flex.items-center.gap-1 {
    line-height: 1;
}

/* 统计数据卡片 */
#stats .bg-white {
    transition: all 0.3s ease;
}

#stats .bg-white:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

/* 案例卡片渐变 */
#reviews .bg-gradient-to-r {
    transition: all 0.3s ease;
}

#reviews .bg-gradient-to-r:hover {
    transform: scale(1.02);
}

/* ========== 移动端导航菜单 ========== */
.mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease, opacity 0.3s ease;
    opacity: 0;
}

.mobile-menu.open {
    max-height: 500px;
    opacity: 1;
}

/* 移动端菜单项点击波纹效果 */
.mobile-menu a:active,
.mobile-menu button:active {
    background: rgba(0, 0, 0, 0.05);
}

/* 防止菜单打开时背景滚动 */
body.menu-open {
    overflow: hidden;
}

/* 移动端导航阴影 */
@media (max-width: 767px) {
    nav.sticky {
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    }
}