/* 基础样式重置和自定义样式 */
@layer base {
    html {
        scroll-behavior: smooth;
        scroll-padding-top: 5rem;
    }
    
    body {
        font-family: var(--font-primary);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 自定义动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 无障碍焦点样式 */
:focus-visible {
    outline: 3px solid var(--theme-color);
    outline-offset: 2px;
    border-radius: 0.375rem;
}

/* 确保所有可交互元素在获得焦点时有清晰的视觉反馈 */
a:focus, button:focus {
    outline: 2px solid #3B82F6; /* ring-blue-500 */
    outline-offset: 2px;
    border-radius: 0.375rem; /* equivalent to ring-2 */
}

/* WAI-ARIA 支持的隐藏元素 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* 主题色类 */
.text-theme {
    color: var(--theme-color-dark);
}

.text-theme-dark {
    color: #4A5D3F;
}

.text-theme-light {
    color: var(--theme-color);
}

.bg-theme {
    background-color: var(--theme-color);
}

.bg-theme-dark {
    background-color: var(--theme-color-dark);
}

.bg-theme-light {
    background-color: var(--theme-color-light);
}


/* Hero 文字渐变 */
.gradient-text {
    background: linear-gradient(120deg, var(--theme-color-dark), var(--theme-color), var(--theme-color-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientText 6s ease infinite;
    background-size: 200% auto;
}

@keyframes gradientText {
    0% { background-position: 0% 50% }
    50% { background-position: 100% 50% }
    100% { background-position: 0% 50% }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--theme-color-light);
    opacity: 0.5;
}

::-webkit-scrollbar-thumb {
    background: var(--theme-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--theme-color-dark);
}

/* 二维码滤镜 */
.qr-code img {
    filter: none;
    transition: filter 0.3s ease;
}

/* .qr-code:hover img {
    /* filter: sepia(70%) hue-rotate(15deg) ; 
} */

/* 按钮悬浮效果 */
.download-btn {
    transform: translateY(0);
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(164, 183, 148, 0.3);
}

/* 子标题锚点 */
.anchor-title {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.anchor-title::after {
    content: '#';
    opacity: 0;
    margin-left: 0.5em;
    color: var(--theme-color);
    transition: opacity 0.2s;
}

.anchor-title:hover::after {
    opacity: 0.6;
}

.anchor-title.copied::after {
    content: '✓';
    opacity: 1;
    color: var(--theme-color-dark);
}

/* 渐入动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 下拉菜单动画 */
.relative > div {
    transform-origin: top;
    animation: dropDown 0.2s ease-out;
}

@keyframes dropDown {
    from {
        opacity: 0;
        transform: scaleY(0);
    }
    to {
        opacity: 1;
        transform: scaleY(1);
    }
}

/* 标题层级样式 */
h1 {
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 1.2;
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--theme-color-dark);
    margin-bottom: 1.5rem;
}

h3 {
    font-size: clamp(1.25rem, 3vw, 2rem);
    color: var(--theme-color-dark);
}

/* 优化菜单图标 */
.menu-icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    color: #A48D6F;
    transition: all 0.2s ease;
}

.menu-icon:hover {
    color: var(--theme-color);
}

.menu-icon:active {
    transform: scale(0.95);
}

/* 下拉菜单项样式 */
.menu-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: #A48D6F;
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
}

.menu-item:hover {
    background: rgba(164, 183, 148, 0.1);
    border-left-color: var(--theme-color);
}

.menu-item svg {
    opacity: 0.8;
}

.menu-item:hover svg {
    opacity: 1;
}

/* 下拉菜单动画优化 */
.relative > div[role="menu"] {
    transform-origin: top right;
    animation: dropDown 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 
        0 4px 6px -1px rgba(0, 0, 0, 0.1),
        0 2px 4px -1px rgba(0, 0, 0, 0.06),
        0 0 0 1px rgba(255, 255, 255, 0.3);
}

@keyframes dropDown {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 滚动条美化 */
.relative > div[role="menu"]::-webkit-scrollbar {
    width: 4px;
}

.relative > div[role="menu"]::-webkit-scrollbar-track {
    background: transparent;
}

/* .relative > div[role="menu"]::-webkit-scrollbar-thumb {
    background: var(--theme-color-light);
    border-radius: 2px;
} */

.relative > div[role="menu"]::-webkit-scrollbar-thumb:hover {
    background: var(--theme-color);
}

/* 跳过导航链接 */
.skip-nav {
    position: absolute;
    top: -9999px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--theme-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0 0 0.375rem 0.375rem;
    z-index: 1000;
}

.skip-nav:focus {
    top: 0;
}

/* 确保足够的颜色对比度 */
.text-theme-dark {
    color: #4A5D3F;
}

/* 改进动画，考虑用户的动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 确保文本可缩放 */
html {
    font-size: 100%;
}

/* 社交链接样式 */
.social-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 9999px;
    color: #9CA3AF;
    background: rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
}

.social-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.social-link i {
    font-size: 1.25rem;
}

.social-tooltip {
    position: absolute;
    bottom: -2rem;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    padding: 0.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 0.75rem;
    border-radius: 0.25rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.social-link:hover .social-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 确保滚动定位考虑固定头部 */
html {
    scroll-padding-top: 5rem;
}

/* 平滑滚动到锚点 */
.feature-card {
    scroll-margin-top: 5rem;
}