/* ====================
   全局样式和变量 - QooApp二次元风格
   ==================== */

:root {
    --color-primary: #9B59B6;
    --color-primary-light: #BB8FCE;
    --color-primary-lighter: #D7BDE2;
    --color-primary-dark: #8E44AD;
    --color-primary-darker: #6C3483;
    
    --color-accent: #E91E63;
    --color-accent-light: #F5B7D1;
    --color-accent-dark: #C2185B;
    --color-accent-darker: #880E4F;
    
    --color-neon-purple: #BF5AF2;
    --color-neon-pink: #FF2D55;
    --color-neon-blue: #00D4FF;
    --color-neon-green: #30D158;
    --color-neon-yellow: #FFD60A;
    --color-neon-orange: #FF9F0A;
    
    --color-secondary: #3498DB;
    --color-secondary-light: #85C1E9;
    
    --color-white: #ffffff;
    --color-gray-50: #FFF0F5;
    --color-gray-100: #FFE4E9;
    --color-gray-200: #FFB6C1;
    --color-gray-300: #FF69B4;
    --color-gray: #A78BFA;
    --color-gray-dark: #7C3AED;
    --color-gray-darker: #5B21B6;
    
    --color-text: #2C1810;
    --color-text-light: #6D4C41;
    --color-text-muted: #A1887F;
    
    --color-success: #2ECC71;
    --color-warning: #F39C12;
    --color-danger: #E74C3C;
    
    --font-heading: 'ZCOOL KuaiLe', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-code: 'JetBrains Mono', 'Courier New', monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;
    
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-3xl: 2.5rem;
    --radius-4xl: 3rem;
    --radius-full: 9999px;
    
    --shadow-sm: 0 2px 4px rgba(155, 89, 182, 0.15);
    --shadow-md: 0 4px 12px rgba(155, 89, 182, 0.25);
    --shadow-lg: 0 8px 24px rgba(155, 89, 182, 0.35);
    --shadow-xl: 0 12px 40px rgba(155, 89, 182, 0.45);
    --shadow-2xl: 0 20px 60px rgba(155, 89, 182, 0.55);
    
    --shadow-neon-purple: 0 0 20px rgba(191, 90, 242, 0.4), 0 0 40px rgba(191, 90, 242, 0.2);
    --shadow-neon-pink: 0 0 20px rgba(255, 45, 85, 0.4), 0 0 40px rgba(255, 45, 85, 0.2);
    --shadow-neon-blue: 0 0 20px rgba(0, 212, 255, 0.4), 0 0 40px rgba(0, 212, 255, 0.2);
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    --max-width: 1400px;
    --max-width-content: 1000px;
}

/* ====================
   基础样式
   ==================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h1 {
    font-size: var(--text-5xl);
    letter-spacing: -0.03em;
}

h2 {
    font-size: var(--text-4xl);
    letter-spacing: -0.02em;
}

h3 {
    font-size: var(--text-2xl);
    letter-spacing: -0.01em;
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-accent);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

code, pre {
    font-family: var(--font-code);
    background-color: var(--color-gray-100);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.9em;
}

pre {
    padding: var(--spacing-lg);
    overflow-x: auto;
}

::selection {
    background-color: rgba(233, 30, 99, 0.3);
    color: var(--color-accent-dark);
}

/* ====================
   布局容器
   ==================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.content-wrapper {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 900;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-dark);
    max-width: 640px;
    margin: 0 auto;
}

/* ====================
   主内容区
   ==================== */

.main-content {
    min-height: calc(100vh - 70px);
    padding-top: 70px;
}

/* ====================
   渐变背景 - QooApp二次元风格
   ==================== */

.gradient-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
}

.gradient-hero {
    background: linear-gradient(135deg, #4A148C 0%, #6A1B9A 15%, #8E44AD 30%, #9B59B6 45%, #E91E63 60%, #FF4081 75%, #FF80AB 90%, #F8BBD0 100%);
    position: relative;
    overflow: hidden;
}

.gradient-hero::before {
    content: '';
    position: absolute;
    top: -60%;
    right: -15%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(191, 90, 242, 0.35) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 12s ease-in-out infinite;
}

.gradient-hero::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 45, 85, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, -40px) scale(1.05); }
}

@keyframes float-alt {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-30px, 30px) rotate(5deg); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; filter: brightness(1); }
    50% { opacity: 0.8; filter: brightness(1.2); }
}

@keyframes shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes bounce-in {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes slide-up {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes wave {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes border-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradient-light {
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.gradient-purple-pink {
    background: linear-gradient(135deg, var(--color-primary-darker) 0%, var(--color-primary) 50%, var(--color-accent) 100%);
}

.gradient-pink-orange {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-neon-orange) 100%);
}

.gradient-neon {
    background: linear-gradient(135deg, var(--color-neon-purple) 0%, var(--color-neon-pink) 50%, var(--color-neon-blue) 100%);
}

.bg-gray-50 {
    background-color: var(--color-gray-50);
}

.bg-gradient-mesh {
    background: 
        radial-gradient(circle at 20% 80%, rgba(155, 89, 182, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(233, 30, 99, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(191, 90, 242, 0.05) 0%, transparent 70%);
}

/* ====================
   文本样式
   ==================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-white { color: var(--color-white); }
.text-gray { color: var(--color-gray); }
.text-gray-dark { color: var(--color-gray-dark); }
.text-primary { color: var(--color-primary); }
.text-primary-light { color: var(--color-primary-light); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }

.text-bold { font-weight: 700; }
.text-semibold { font-weight: 600; }
.text-medium { font-weight: 500; }

/* ====================
   按钮样式 - QooApp二次元风格
   ==================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 32px;
    font-size: var(--text-base);
    font-weight: 700;
    font-family: var(--font-body);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
    line-height: 1.5;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: var(--color-white);
    box-shadow: 0 6px 20px rgba(155, 89, 182, 0.4), var(--shadow-neon-purple);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 35px rgba(155, 89, 182, 0.5), var(--shadow-neon-pink);
    color: var(--color-white);
}

.btn-primary:active {
    transform: translateY(-2px) scale(0.98);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-gray-200);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    background-color: rgba(155, 89, 182, 0.05);
    transform: translateY(-3px) scale(1.02);
    color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.btn-outline-white {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--color-white);
    transform: translateY(-3px) scale(1.02);
    color: var(--color-white);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.btn-neon {
    background: linear-gradient(135deg, var(--color-neon-purple) 0%, var(--color-neon-pink) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-neon-purple), var(--shadow-neon-pink);
    animation: pulse-glow 2s ease-in-out infinite;
}

.btn-neon:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 0 30px rgba(191, 90, 242, 0.6), 0 0 60px rgba(255, 45, 85, 0.4);
    color: var(--color-white);
}

.btn-lg {
    padding: 18px 44px;
    font-size: var(--text-lg);
}

.btn-sm {
    padding: 10px 22px;
    font-size: var(--text-sm);
}

.btn-block {
    width: 100%;
}

/* ====================
   卡片样式 - QooApp二次元风格
   ==================== */

.card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
    background-size: 200% 100%;
    animation: border-flow 3s linear infinite;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-2xl);
    transform: translateY(-8px);
}

.card:hover::before {
    opacity: 1;
}

.card-feature {
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-feature::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(155, 89, 182, 0.08) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-feature:hover {
    border-color: transparent;
    box-shadow: var(--shadow-2xl);
    transform: translateY(-10px) scale(1.02);
}

.card-feature:hover::before {
    opacity: 1;
}

.card-feature:hover::after {
    opacity: 1;
}

.card-game {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card-game::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.card-game.rpg::before {
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
}

.card-game.card::before {
    background: linear-gradient(90deg, var(--color-accent), #FF69B4);
}

.card-game.music::before {
    background: linear-gradient(90deg, #27AE60, #58D68D);
}

.card-game.strategy::before {
    background: linear-gradient(90deg, #2980B9, #5DADE2);
}

.card-game.action::before {
    background: linear-gradient(90deg, #D68910, #F4D03F);
}

.card-game.shooter::before {
    background: linear-gradient(90deg, #C0392B, #EC7063);
}

.card-game:hover {
    border-color: transparent;
    box-shadow: var(--shadow-2xl);
    transform: translateY(-8px) rotate(1deg);
}

/* ====================
   网格布局
   ==================== */

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.grid-5 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

/* ====================
   响应式断点
   ==================== */

@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: var(--spacing-md);
    }

    .section {
        padding: var(--spacing-3xl) var(--spacing-md);
    }

    .grid-5 {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    h1 {
        font-size: var(--text-4xl);
    }

    h2, .section-title {
        font-size: var(--text-3xl);
    }

    h3 {
        font-size: var(--text-xl);
    }

    .section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

    .content-wrapper {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .btn {
        padding: 12px 24px;
    }

    .btn-lg {
        padding: 16px 32px;
    }

    .card-feature:hover {
        transform: translateY(-6px) scale(1.01);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }

    h1 {
        font-size: var(--text-3xl);
    }

    h2, .section-title {
        font-size: var(--text-2xl);
    }

    h3 {
        font-size: var(--text-lg);
    }

    .grid-5 {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

/* ====================
   动画工具类
   ==================== */

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-alt {
    animation: float-alt 8s ease-in-out infinite;
}

.animate-pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, var(--color-gray-100) 0%, var(--color-gray-50) 50%, var(--color-gray-100) 100%);
    background-size: 200% 100%;
    animation: shimmer 2s linear infinite;
}

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

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

.animate-fade-in {
    animation: fade-in 0.8s ease-out forwards;
}

.animate-rotate-slow {
    animation: rotate-slow 20s linear infinite;
}

.animate-wave {
    animation: wave 2s ease-in-out infinite;
}

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* ====================
   霓虹发光效果
   ==================== */

.neon-text {
    text-shadow: 
        0 0 10px var(--color-neon-purple),
        0 0 20px var(--color-neon-purple),
        0 0 40px var(--color-neon-pink),
        0 0 80px var(--color-neon-pink);
}

.neon-border {
    box-shadow: 
        0 0 10px var(--color-neon-purple),
        0 0 20px var(--color-neon-purple),
        inset 0 0 10px rgba(191, 90, 242, 0.1);
}

.glow-purple {
    box-shadow: 0 0 20px rgba(155, 89, 182, 0.5), 0 0 40px rgba(155, 89, 182, 0.3);
}

.glow-pink {
    box-shadow: 0 0 20px rgba(233, 30, 99, 0.5), 0 0 40px rgba(233, 30, 99, 0.3);
}

/* ====================
   渐变文字
   ==================== */

.text-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-neon {
    background: linear-gradient(135deg, var(--color-neon-purple), var(--color-neon-pink), var(--color-neon-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: border-flow 3s ease-in-out infinite;
}

/* ====================
   背景装饰
   ==================== */

.bg-pattern-dots {
    background-image: radial-gradient(circle, rgba(155, 89, 182, 0.15) 1px, transparent 1px);
    background-size: 20px 20px;
}

.bg-pattern-grid {
    background-image: 
        linear-gradient(rgba(155, 89, 182, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(155, 89, 182, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* ====================
   滚动条样式
   ==================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-50);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-full);
}

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