/* 磁力搜索导航 - Memphis 复古未来主义 */

/*
 * 设计理念：80年代Memphis Design + 复古未来主义
 * 特点：鲜艳色彩、几何图形、不规则布局、充满活力
 * 字体：100%系统字体（无外部依赖）
 */

:root {
    /* Memphis 配色系统 - 鲜艳大胆 */
    --color-primary-magenta: #ff006e;
    --color-primary-cyan: #00d9ff;
    --color-primary-yellow: #ffbe0b;
    --color-primary-orange: #fb5607;
    --color-primary-purple: #8338ec;

    /* 背景色 */
    --color-bg-light: #fffcf2;
    --color-bg-cream: #fff8e7;
    --color-bg-white: #ffffff;

    /* 文字颜色 */
    --color-text-dark: #1a1a1a;
    --color-text-gray: #4a4a4a;
    --color-text-light: #6a6a6a;

    /* 阴影 */
    --shadow-bold: 8px 8px 0px rgba(0, 0, 0, 0.8);
    --shadow-medium: 5px 5px 0px rgba(0, 0, 0, 0.6);
    --shadow-small: 3px 3px 0px rgba(0, 0, 0, 0.5);

    /* 间距 */
    --spacing-unit: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    line-height: 1.6;
    color: var(--color-text-dark);
    background: var(--color-bg-cream);
    min-height: 100vh;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Memphis 风格背景 - 几何图形动画 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 15% 20%, var(--color-primary-yellow) 0%, transparent 20%),
        radial-gradient(circle at 85% 15%, var(--color-primary-magenta) 0%, transparent 18%),
        radial-gradient(circle at 70% 80%, var(--color-primary-cyan) 0%, transparent 22%),
        radial-gradient(circle at 25% 75%, var(--color-primary-orange) 0%, transparent 15%),
        linear-gradient(135deg, var(--color-bg-cream) 0%, var(--color-bg-light) 100%);
    z-index: -2;
    opacity: 0.4;
}

/* 几何图案装饰 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(0, 0, 0, 0.02) 35px, rgba(0, 0, 0, 0.02) 70px),
        repeating-linear-gradient(-45deg, transparent, transparent 35px, rgba(0, 0, 0, 0.02) 35px, rgba(0, 0, 0, 0.02) 70px);
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

/* 头部 - 大胆几何风格 */
.header {
    background: var(--color-bg-white);
    border-bottom: 6px solid var(--color-text-dark);
    box-shadow: 0 8px 0 rgba(0, 0, 0, 0.1);
    padding: calc(var(--spacing-unit) * 3) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    text-align: center;
}

.logo {
    font-family: -apple-system, system-ui, BlinkMacSystemFont, "Arial Black", "Impact", sans-serif;
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-text-dark);
    margin-bottom: calc(var(--spacing-unit) * 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--spacing-unit) * 2);
    text-transform: uppercase;
    letter-spacing: -2px;
    text-shadow:
        4px 4px 0 var(--color-primary-magenta),
        8px 8px 0 var(--color-primary-cyan);
    animation: logoFloat 3s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-5px) rotate(-1deg); }
}

.logo-icon {
    font-size: 3rem;
    animation: magnetSpin 4s linear infinite;
    filter: drop-shadow(4px 4px 0 var(--color-primary-yellow));
}

@keyframes magnetSpin {
    0% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(90deg) scale(1.1); }
    50% { transform: rotate(180deg) scale(1); }
    75% { transform: rotate(270deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

.subtitle {
    font-size: 1rem;
    color: var(--color-text-gray);
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.main {
    padding: calc(var(--spacing-unit) * 8) 0;
}

/* 搜索区域 - Memphis风格 */
.search-section {
    margin-bottom: calc(var(--spacing-unit) * 10);
}

.search-container {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

/* 装饰几何图形 */
.search-container::before {
    content: '◆';
    position: absolute;
    top: -40px;
    left: 10%;
    font-size: 3rem;
    color: var(--color-primary-magenta);
    opacity: 0.6;
    animation: float1 3s ease-in-out infinite;
}

.search-container::after {
    content: '●';
    position: absolute;
    top: -30px;
    right: 15%;
    font-size: 4rem;
    color: var(--color-primary-cyan);
    opacity: 0.6;
    animation: float2 3.5s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-15px) scale(1.2); }
}

.search-title {
    font-family: -apple-system, system-ui, "Arial Black", "Impact", sans-serif;
    font-size: 3rem;
    color: var(--color-text-dark);
    margin-bottom: calc(var(--spacing-unit) * 5);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -1px;
    transform: rotate(-2deg);
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary-yellow) 0%, var(--color-primary-orange) 100%);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    box-shadow: var(--shadow-bold);
    border: 4px solid var(--color-text-dark);
}

/* 搜索框 - 大胆边框 */
.search-box {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 4);
    background: var(--color-bg-white);
    border-radius: 0;
    padding: calc(var(--spacing-unit) * 1);
    border: 5px solid var(--color-text-dark);
    box-shadow: var(--shadow-medium);
    transform: rotate(1deg);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.search-box:focus-within {
    transform: rotate(0deg) scale(1.02);
    box-shadow:
        8px 8px 0 var(--color-primary-magenta),
        16px 16px 0 rgba(0, 0, 0, 0.3);
}

#searchInput {
    flex: 1;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    border: none;
    background: transparent;
    color: var(--color-text-dark);
    font-size: 1.1rem;
    font-weight: 600;
    outline: none;
}

#searchInput::placeholder {
    color: var(--color-text-light);
    font-weight: 500;
}

/* 超大胆按钮 */
#searchBtn {
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 5);
    background: var(--color-primary-magenta);
    color: var(--color-bg-white);
    border: 4px solid var(--color-text-dark);
    border-radius: 0;
    font-family: -apple-system, system-ui, "Arial Black", sans-serif;
    font-size: 1.1rem;
    font-weight: 900;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: var(--shadow-small);
    position: relative;
}

#searchBtn:hover {
    transform: translateY(-4px) rotate(-3deg);
    background: var(--color-primary-cyan);
    box-shadow:
        6px 6px 0 var(--color-primary-yellow),
        12px 12px 0 rgba(0, 0, 0, 0.4);
}

#searchBtn:active {
    transform: translateY(2px) rotate(0deg);
    box-shadow: var(--shadow-small);
}

/* 热门标签 - 多彩胶囊 */
.hot-searches {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: calc(var(--spacing-unit) * 2);
}

.hot-label {
    color: var(--color-text-dark);
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hot-tag {
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    background: var(--color-primary-yellow);
    color: var(--color-text-dark);
    border-radius: 50px;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 3px solid var(--color-text-dark);
    font-weight: 700;
    box-shadow: var(--shadow-small);
}

.hot-tag:nth-child(2) { background: var(--color-primary-cyan); }
.hot-tag:nth-child(3) { background: var(--color-primary-magenta); color: white; }
.hot-tag:nth-child(4) { background: var(--color-primary-orange); color: white; }
.hot-tag:nth-child(5) { background: var(--color-primary-purple); color: white; }
.hot-tag:nth-child(6) { background: var(--color-primary-yellow); }
.hot-tag:nth-child(7) { background: var(--color-primary-cyan); }

.hot-tag:hover {
    transform: translateY(-6px) rotate(5deg) scale(1.1);
    box-shadow:
        5px 5px 0 var(--color-text-dark),
        10px 10px 0 rgba(0, 0, 0, 0.2);
}

/* 导航区域 */
.nav-section {
    margin-bottom: calc(var(--spacing-unit) * 10);
}

.section-title {
    font-family: -apple-system, system-ui, "Arial Black", "Impact", sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -1px;
    color: var(--color-text-dark);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::before {
    content: '▲▲▲';
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-primary-magenta);
    font-size: 1.5rem;
    letter-spacing: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 8px;
    background: linear-gradient(90deg,
        var(--color-primary-magenta),
        var(--color-primary-cyan),
        var(--color-primary-yellow));
    box-shadow: var(--shadow-small);
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 6);
}

/* Memphis风格卡片 - 不规则旋转 */
.nav-item {
    background: var(--color-bg-white);
    border: 5px solid var(--color-text-dark);
    border-radius: 0;
    padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 3);
    text-decoration: none;
    color: var(--color-text-dark);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-medium);
    transform: rotate(var(--rotate-angle, 0deg));
}

/* 为每个卡片添加不同的旋转角度 */
.nav-item:nth-child(1) { --rotate-angle: 2deg; background: rgba(255, 190, 11, 0.1); }
.nav-item:nth-child(2) { --rotate-angle: -1deg; background: rgba(0, 217, 255, 0.1); }
.nav-item:nth-child(3) { --rotate-angle: 1deg; background: rgba(255, 0, 110, 0.1); }
.nav-item:nth-child(4) { --rotate-angle: -2deg; background: rgba(251, 86, 7, 0.1); }
.nav-item:nth-child(5) { --rotate-angle: 1.5deg; background: rgba(131, 56, 236, 0.1); }
.nav-item:nth-child(6) { --rotate-angle: -1.5deg; background: rgba(255, 190, 11, 0.1); }
.nav-item:nth-child(7) { --rotate-angle: 2deg; background: rgba(0, 217, 255, 0.1); }
.nav-item:nth-child(8) { --rotate-angle: -1deg; background: rgba(255, 0, 110, 0.1); }
.nav-item:nth-child(9) { --rotate-angle: 1deg; background: rgba(251, 86, 7, 0.1); }
.nav-item:nth-child(10) { --rotate-angle: -2deg; background: rgba(131, 56, 236, 0.1); }
.nav-item:nth-child(11) { --rotate-angle: 1.5deg; background: rgba(255, 190, 11, 0.1); }
.nav-item:nth-child(12) { --rotate-angle: -1.5deg; background: rgba(0, 217, 255, 0.1); }
.nav-item:nth-child(13) { --rotate-angle: 2deg; background: rgba(255, 0, 110, 0.1); }
.nav-item:nth-child(14) { --rotate-angle: -1deg; background: rgba(251, 86, 7, 0.1); }
.nav-item:nth-child(15) { --rotate-angle: 1deg; background: rgba(131, 56, 236, 0.1); }

.nav-item:hover {
    transform: translateY(-15px) rotate(0deg) scale(1.05);
    box-shadow:
        10px 10px 0 var(--color-primary-magenta),
        20px 20px 0 rgba(0, 0, 0, 0.2);
    z-index: 10;
}

.nav-icon {
    font-size: 4rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
    display: block;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    filter: drop-shadow(3px 3px 0 rgba(0, 0, 0, 0.2));
}

.nav-item:hover .nav-icon {
    transform: scale(1.3) rotate(360deg);
    filter: drop-shadow(5px 5px 0 var(--color-primary-cyan));
}

.nav-title {
    font-family: -apple-system, system-ui, "Arial Black", sans-serif;
    font-size: 1.2rem;
    font-weight: 900;
    margin-bottom: calc(var(--spacing-unit) * 1);
    color: var(--color-text-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-desc {
    font-size: 0.95rem;
    color: var(--color-text-gray);
    line-height: 1.5;
    font-weight: 500;
}

/* 帮助区域 - 大胆卡片 */
.help-section {
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.help-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
    max-width: 1200px;
    margin: 0 auto;
}

.help-item {
    background: var(--color-bg-white);
    border: 5px solid var(--color-text-dark);
    border-radius: 0;
    padding: calc(var(--spacing-unit) * 4);
    box-shadow: var(--shadow-medium);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
}

.help-item::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--color-primary-yellow) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.help-item:hover {
    transform: translateY(-8px);
    box-shadow:
        8px 8px 0 var(--color-primary-cyan),
        16px 16px 0 rgba(0, 0, 0, 0.2);
}

.help-item:hover::before {
    opacity: 0.2;
}

.help-item h3 {
    font-family: -apple-system, system-ui, "Arial Black", sans-serif;
    font-size: 1.3rem;
    color: var(--color-text-dark);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-weight: 900;
    text-transform: uppercase;
}

.help-item p {
    color: var(--color-text-gray);
    line-height: 1.8;
    font-size: 1rem;
    font-weight: 500;
}

/* 页脚 - Memphis装饰 */
.footer {
    background: var(--color-text-dark);
    color: var(--color-bg-white);
    border-top: 8px solid var(--color-primary-magenta);
    box-shadow:
        0 -4px 0 var(--color-primary-cyan),
        0 -8px 0 var(--color-primary-yellow);
    padding: calc(var(--spacing-unit) * 5) 0;
    margin-top: auto;
    position: relative;
}

.footer::before {
    content: '◆ ● ▲ ■';
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    letter-spacing: 20px;
    color: var(--color-primary-magenta);
    animation: float1 4s ease-in-out infinite;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    color: var(--color-bg-white);
    font-size: 1rem;
    margin-bottom: calc(var(--spacing-unit) * 1);
    font-weight: 600;
}

.disclaimer {
    font-size: 0.9rem;
    color: var(--color-bg-cream);
    font-weight: 500;
}

/* 滚动条 - Memphis风格 */
::-webkit-scrollbar {
    width: 14px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-cream);
    border: 3px solid var(--color-text-dark);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg,
        var(--color-primary-magenta),
        var(--color-primary-cyan),
        var(--color-primary-yellow));
    border: 3px solid var(--color-text-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg,
        var(--color-primary-cyan),
        var(--color-primary-yellow),
        var(--color-primary-magenta));
}

/* 文本选择 */
::selection {
    background: var(--color-primary-magenta);
    color: var(--color-bg-white);
}

/* 焦点样式 */
button:focus,
a:focus {
    outline: 4px dashed var(--color-primary-cyan);
    outline-offset: 4px;
}

/* 加载动画 - 弹跳进入 */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: translateY(50px) rotate(10deg) scale(0.8);
    }
    60% {
        opacity: 1;
        transform: translateY(-10px) rotate(-2deg) scale(1.05);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(var(--rotate-angle, 0deg)) scale(1);
    }
}

.nav-item,
.help-item {
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) backwards;
}

.nav-item:nth-child(1) { animation-delay: 0.05s; }
.nav-item:nth-child(2) { animation-delay: 0.1s; }
.nav-item:nth-child(3) { animation-delay: 0.15s; }
.nav-item:nth-child(4) { animation-delay: 0.2s; }
.nav-item:nth-child(5) { animation-delay: 0.25s; }
.nav-item:nth-child(6) { animation-delay: 0.3s; }
.nav-item:nth-child(7) { animation-delay: 0.35s; }
.nav-item:nth-child(8) { animation-delay: 0.4s; }
.nav-item:nth-child(9) { animation-delay: 0.45s; }
.nav-item:nth-child(10) { animation-delay: 0.5s; }
.nav-item:nth-child(11) { animation-delay: 0.55s; }
.nav-item:nth-child(12) { animation-delay: 0.6s; }
.nav-item:nth-child(13) { animation-delay: 0.65s; }
.nav-item:nth-child(14) { animation-delay: 0.7s; }
.nav-item:nth-child(15) { animation-delay: 0.75s; }

.help-item:nth-child(1) { animation-delay: 0.8s; }
.help-item:nth-child(2) { animation-delay: 0.9s; }
.help-item:nth-child(3) { animation-delay: 1s; }

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 calc(var(--spacing-unit) * 2);
    }

    .logo {
        font-size: 2rem;
        letter-spacing: -1px;
        text-shadow:
            3px 3px 0 var(--color-primary-magenta),
            6px 6px 0 var(--color-primary-cyan);
    }

    .logo-icon {
        font-size: 2rem;
    }

    .search-title {
        font-size: 2rem;
        padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    }

    .search-box {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 1);
        transform: rotate(0deg);
    }

    #searchInput {
        padding: calc(var(--spacing-unit) * 2);
        font-size: 1rem;
    }

    #searchBtn {
        padding: calc(var(--spacing-unit) * 2);
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .nav-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 3);
    }

    .nav-item {
        transform: rotate(0deg) !important;
    }

    .help-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 3);
    }
}

@media (max-width: 480px) {
    .header {
        padding: calc(var(--spacing-unit) * 2) 0;
    }

    .main {
        padding: calc(var(--spacing-unit) * 4) 0;
    }

    .logo {
        font-size: 1.5rem;
    }

    .search-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .nav-icon {
        font-size: 3rem;
    }
}

/* iOS特定优化 */
@supports (-webkit-touch-callout: none) {
    body {
        -webkit-font-smoothing: subpixel-antialiased;
        -webkit-text-size-adjust: 100%;
    }

    .nav-item,
    .hot-tag,
    #searchBtn {
        -webkit-tap-highlight-color: rgba(255, 0, 110, 0.3);
        cursor: pointer;
    }

    #searchInput {
        -webkit-appearance: none;
        border-radius: 0;
        font-size: 16px;
    }
}

/* 性能优化 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}