/* ============================================
   Mordom Design System v2.0 - P0 Optimization
   设计令牌系统 + 微交互精细化
   ============================================ */

/* ========== 1. 设计令牌系统 (Design Tokens) ========== */
:root {
    /* --- 色彩系统：金色系5阶 --- */
    --color-gold-50: #fdf8e7;
    --color-gold-100: #f9ecc4;
    --color-gold-200: #f0d98a;
    --color-gold-300: #e6c455;
    --color-gold-400: #d4af37;  /* 标准金 - 主色 */
    --color-gold-500: #b8941f;  /* 深金 */
    --color-gold-600: #947615;
    --color-gold-700: #6e570e;
    --color-gold-800: #4a3a09;
    --color-gold-900: #2a2105;

    /* --- 色彩系统：黑色系5阶 --- */
    --color-black-50: #f5f5f7;
    --color-black-100: #e8e8ed;
    --color-black-200: #c4c4cf;
    --color-black-300: #8a8a99;
    --color-black-400: #5a5a6a;
    --color-black-500: #3a3a4a;
    --color-black-600: #2a2a38;
    --color-black-700: #1e1e2a;  /* 深灰 - 卡片背景 */
    --color-black-800: #14141e;  /* 背景黑 - 页面背景 */
    --color-black-900: #0a0a0f;  /* 纯黑 - 最深层 */

    /* --- 辅助色 --- */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* --- 渐变系统 --- */
    --gradient-gold: linear-gradient(135deg, var(--color-gold-400) 0%, var(--color-gold-500) 100%);
    --gradient-gold-light: linear-gradient(135deg, var(--color-gold-300) 0%, var(--color-gold-400) 100%);
    --gradient-dark: linear-gradient(180deg, var(--color-black-800) 0%, var(--color-black-900) 100%);
    --gradient-hologram: linear-gradient(135deg, rgba(212,175,55,0.1) 0%, rgba(212,175,55,0.05) 50%, rgba(212,175,55,0.1) 100%);

    /* --- 字体系统 --- */
    --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', 'STSong', serif;
    --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

    /* --- 字号层级 --- */
    --text-xs: 12px;
    --text-sm: 14px;
    --text-base: 16px;
    --text-lg: 18px;
    --text-xl: 20px;
    --text-2xl: 24px;
    --text-3xl: 30px;
    --text-4xl: 36px;
    --text-5xl: 48px;
    --text-6xl: 60px;
    --text-7xl: 72px;

    /* --- 字重 --- */
    --weight-light: 300;
    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
    --weight-extrabold: 800;
    --weight-black: 900;

    /* --- 行高 --- */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.75;

    /* --- 间距系统 (8px网格) --- */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;

    /* --- 圆角系统 --- */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* --- 阴影系统 --- */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-gold-sm: 0 2px 8px rgba(212, 175, 55, 0.2);
    --shadow-gold-md: 0 4px 16px rgba(212, 175, 55, 0.3);
    --shadow-gold-lg: 0 8px 32px rgba(212, 175, 55, 0.4);

    /* --- 动效系统 --- */
    --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
    --duration-slower: 700ms;

    /* --- 布局 --- */
    --container-max: 1200px;
    --container-padding: var(--space-6);

    /* 白色透明度系列 */
    --color-white-03: rgba(255, 255, 255, 0.03);
    --color-white-04: rgba(255, 255, 255, 0.04);
    --color-white-05: rgba(255, 255, 255, 0.05);
    --color-white-06: rgba(255, 255, 255, 0.06);
    --color-white-08: rgba(255, 255, 255, 0.08);
    --color-white-10: rgba(255, 255, 255, 0.1);
    --color-white-15: rgba(255, 255, 255, 0.15);
    --color-white-20: rgba(255, 255, 255, 0.2);
    
    /* 金色透明度系列 */
    --color-gold-10: var(--color-gold-10);
    --color-gold-15: rgba(212, 175, 55, 0.15);
    --color-gold-20: rgba(212, 175, 55, 0.2);
    --color-gold-30: rgba(212, 175, 55, 0.3);
    --color-gold-40: rgba(212, 175, 55, 0.4);
    --color-gold-50: rgba(212, 175, 55, 0.5);
    --color-gold-60: rgba(212, 175, 55, 0.6);
    
    /* 深色透明度系列 */
    --color-dark-80: rgba(10, 10, 15, 0.8);
    --color-dark-90: rgba(10, 10, 15, 0.9);
    --color-dark-95: rgba(10, 10, 15, 0.95);

    /* 自定义颜色变量 */
    --color-custom-1: #fff;
    --color-custom-2: rgba(201, 169, 110, 0.3);
    --color-custom-3: rgba(201, 169, 110, 0.2);
    --color-custom-4: rgba(10, 10, 15, 0.85);
    --color-custom-5: rgba(212, 175, 55, 0.05);
    --color-custom-6: rgba(201, 169, 110, 0.1);
    --color-custom-7: rgba(201, 169, 110, 0.4);
    --color-custom-8: rgba(0,0,0,1);
    --color-custom-9: rgba(0,0,0,0);
    --color-custom-10: rgba(212, 175, 55, 0.9);

    /* 全息效果专用颜色 */
    --color-hologram-gold: #a8894f;
    --color-hologram-gold-80: rgba(201, 169, 110, 0.8);
    --color-hologram-gold-60: rgba(201, 169, 110, 0.6);
    --color-hologram-gold-50: rgba(201, 169, 110, 0.5);
    --color-hologram-gold-15: rgba(201, 169, 110, 0.15);
    --color-hologram-purple-60: rgba(139, 92, 246, 0.6);
    --color-hologram-purple-10: rgba(139, 92, 246, 0.1);
    --color-hologram-green-70: rgba(16, 185, 129, 0.7);
    --color-hologram-dark-95: rgba(15, 15, 15, 0.95);
    --color-hologram-dark-90: rgba(15, 15, 15, 0.9);
    --color-hologram-dark2-90: rgba(36, 36, 36, 0.9);
    --color-hologram-dark3-95: rgba(24, 24, 24, 0.95);
    --color-hologram-black-80: rgba(0,0,0,0.8);

    /* 产品对比专用颜色 */
    --color-compare-error: #ff6464;
    --color-compare-error-30: rgba(255, 100, 100, 0.3);
    --color-compare-error-20: rgba(255, 100, 100, 0.2);
    --color-compare-error-10: rgba(255, 100, 100, 0.1);
    --color-compare-dark-90: rgba(30, 30, 42, 0.9);
    --color-compare-dark2-90: rgba(20, 20, 30, 0.9);
    --color-compare-white-02: rgba(255, 255, 255, 0.02);
    --color-compare-gold-95: rgba(212, 175, 55, 0.95);

    /* 最终统一颜色变量 */
    --color-final-1: rgba(212, 175, 55, 0.12);
    --color-final-2: rgba(212, 175, 55, 0.03);
    --color-final-3: #6496ff;
    --color-final-4: rgba(212, 175, 55, 0.08);
    --color-final-5: rgba(100, 200, 150, 0.15);
    --color-final-6: rgba(100, 150, 255, 0.15);
    --color-final-7: rgba(10, 10, 15, 0.92);

    /* 终极统一颜色变量 */
    --color-ultimate-1: var(--color-white-20);
    --color-ultimate-2: var(--color-gold-10);
    --color-ultimate-3: var(--color-black-50, rgba(0,0,0,0.5));
}

/* ========== 2. 字体引入（自托管镜像，避免Google Fonts不可达） ========== */
@import url('https://miaoda.feishu.cn/fonts/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=Noto+Serif+SC:wght@400;600;700;900&display=swap');

/* ========== 3. 全局基础样式 ========== */
* {
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-black-100);
    background: var(--color-black-900);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: var(--weight-bold);
    line-height: var(--leading-tight);
}

/* ========== 4. 自定义滚动条 ========== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-black-800);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gold-600);
    border-radius: var(--radius-full);
    transition: background var(--duration-fast) var(--ease-standard);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gold-400);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-gold-600) var(--color-black-800);
}

/* ========== 5. 按钮涟漪效果 (Ripple) ========== */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple .ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: var(--color-white-20);
    transform: scale(0);
    animation: ripple-anim 0.6s var(--ease-out);
    pointer-events: none;
}

@keyframes ripple-anim {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* 按钮按压反馈 */
button:active, .btn:active, a[class*="btn"]:active {
    transform: scale(0.97) !important;
    transition: transform var(--duration-fast) var(--ease-standard);
}

/* ========== 6. 产品卡片3D倾斜效果 ========== */
.product-card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform var(--duration-normal) var(--ease-standard),
                box-shadow var(--duration-normal) var(--ease-standard);
}

.product-card-3d .card-content {
    transform: translateZ(20px);
}

.product-card-3d .card-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
                rgba(212, 175, 55, 0.15) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-standard);
    pointer-events: none;
}

.product-card-3d:hover .card-glow {
    opacity: 1;
}

/* ========== 7. 滚动揭示动画 ========== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--duration-slow) var(--ease-standard),
                transform var(--duration-slow) var(--ease-standard);
    will-change: opacity, transform;
}

.reveal.revealed {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* 不同方向的揭示 */
.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity var(--duration-slow) var(--ease-standard),
                transform var(--duration-slow) var(--ease-standard);
}

.reveal-left.revealed {
    opacity: 1 !important;
    transform: translateX(0) !important;
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity var(--duration-slow) var(--ease-standard),
                transform var(--duration-slow) var(--ease-standard);
}

.reveal-right.revealed {
    opacity: 1 !important;
    transform: translateX(0) !important;
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity var(--duration-slow) var(--ease-standard),
                transform var(--duration-slow) var(--ease-elastic);
}

.reveal-scale.revealed {
    opacity: 1 !important;
    transform: scale(1) !important;
}

/* 延迟类 */
.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* ========== 8. 返回顶部按钮 ========== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 24px;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-gold);
    color: var(--color-black-900);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-gold-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--duration-normal) var(--ease-standard);
    z-index: 999990;
}

.back-to-top.visible {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold-lg);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

/* 进度环 */
.back-to-top .progress-ring {
    position: absolute;
    inset: -3px;
    width: calc(100% + 6px);
    height: calc(100% + 6px);
    transform: rotate(-90deg);
}

.back-to-top .progress-ring circle {
    fill: none;
    stroke: var(--color-gold-300);
    stroke-width: 2;
    stroke-dasharray: 138;
    stroke-dashoffset: 138;
    transition: stroke-dashoffset var(--duration-fast) linear;
}

/* ========== 9. 阅读进度条 ========== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-gold);
    z-index: 1000000;
    width: 0%;
    transition: width var(--duration-fast) linear;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

/* ========== 10. 导航栏下划线动画 ========== */
.nav-link-underline {
    position: relative;
}

.nav-link-underline::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-gold-400);
    transition: all var(--duration-normal) var(--ease-standard);
    transform: translateX(-50%);
}

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

/* ========== 11. 图片懒加载渐显 ========== */
img.lazy-img {
    opacity: 0;
    filter: blur(10px);
    transition: opacity var(--duration-slow) var(--ease-standard),
                filter var(--duration-slow) var(--ease-standard);
}

img.lazy-img.loaded {
    opacity: 1;
    filter: blur(0);
}

/* ========== 12. 选中文字样式 ========== */
::selection {
    background: var(--color-gold-400);
    color: var(--color-black-900);
}

::-moz-selection {
    background: var(--color-gold-400);
    color: var(--color-black-900);
}

/* ========== 13. 减少动画偏好（无障碍） ========== */
@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;
    }
    
    .reveal, .reveal-left, .reveal-right, .reveal-scale {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ========== 14. 容器优化 ========== */
.container-optimized {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========== 15. 焦点样式（无障碍） ========== */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-gold-400);
    outline-offset: 2px;
}

/* ========== 15. 响应式布局 - 移动端导航 ========== */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    cursor: pointer;
    gap: 5px;
    border-radius: 8px;
    transition: background 0.3s;
    z-index: 1001;
}
.mobile-toggle:hover {
    background: var(--color-gold-10);
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gold, #d4af37);
    border-radius: 2px;
    transition: all 0.3s ease;
}
.mobile-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-dark, #0a0a0f);
        flex-direction: column;
        justify-content: flex-start;
        padding: 80px 24px 24px;
        gap: 8px;
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -4px 0 20px var(--color-black-50, rgba(0,0,0,0.5));
        border-left: 1px solid rgba(212, 175, 55, 0.2);
    }
    .nav-links.active {
        right: 0;
    }
    .nav-links li {
        width: 100%;
    }
    .nav-links li a {
        display: block;
        padding: 14px 16px;
        font-size: 16px;
        border-radius: 8px;
        transition: background 0.2s;
    }
    .nav-links li a:hover {
        background: var(--color-gold-10);
    }
    .nav-user-area {
        gap: 8px;
    }
    .nav-login-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
    .hero-content h1 {
        font-size: 2rem !important;
    }
    .hero-content p {
        font-size: 1rem !important;
    }
    .product-grid {
        grid-template-columns: 1fr !important;
    }
    .section-title h2 {
        font-size: 1.5rem !important;
    }
}

@media (max-width: 480px) {
    .nav-logo {
        font-size: 1rem;
    }
    .nav-links {
        width: 100%;
    }
    .hero-content {
        padding: 0 16px !important;
    }
    .btn {
        padding: 12px 20px !important;
        font-size: 14px !important;
    }
}

/* 移动端遮罩层 */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-black-50, rgba(0,0,0,0.5));
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
}
.mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* ========== 16. 触控目标大小优化 (WCAG 2.5.5 - 最小44x44px) ========== */
.nav-login-btn {
    min-height: 44px;
    padding: 10px 20px;
}
.lang-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 8px 12px;
    font-size: 14px;
}
.site-search-trigger {
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.quote-modal-close,
.case-modal-close,
.modal-close-btn {
    min-width: 44px;
    min-height: 44px;
    font-size: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.skip-link {
    min-height: 44px;
    padding: 12px 20px;
}
/* 页脚链接增加触控区域 */
.footer-links a,
.footer-nav a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 8px 4px;
}
/* 产品卡片确保足够触控区域 */
.product-card {
    min-height: 200px;
}
.product-card a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}
/* 导航链接增加触控区域 */
.nav-links li a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}
/* 按钮通用最小高度 */
.btn,
button {
    min-height: 44px;
}
/* 输入框确保足够高度 */
input, select, textarea {
    min-height: 44px;
}