/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 导入字体 */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* 色彩变量 */
:root {
    --primary: #0A2463;
    --secondary: #E63946;
    --accent: #FF9F1C;
    --bg-primary: #0D1B2A;
    --bg-secondary: #1B263B;
    --bg-card: rgba(255, 255, 255, 0.08);
    --text-primary: #F0F4F8;
    --text-secondary: #B8C5D6;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 25px rgba(255, 159, 28, 0.3);
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--bg-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
    --gradient-bg: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.06) 100%);
}

/* 日间模式 */
body.light-mode {
    --primary: #1E3A8A;
    --secondary: #DC2626;
    --accent: #F59E0B;
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-card: rgba(30, 58, 138, 0.05);
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --border: rgba(30, 58, 138, 0.1);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.2);
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-bg: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* 基础样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    line-height: 1.6;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* 背景装饰 */
.background-decor {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, rgba(255, 159, 28, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(230, 57, 70, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(10, 36, 99, 0.2) 0%, transparent 50%);
    z-index: -1;
    animation: float 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(2%, 2%) rotate(1deg);
    }
    50% {
        transform: translate(0, 4%) rotate(0deg);
    }
    75% {
        transform: translate(-2%, 2%) rotate(-1deg);
    }
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 2;
}

/* 头部 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -1px;
}

.logo .accent {
    color: var(--accent);
}

.logo .tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0.25rem 0 0 0;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 主题切换按钮 */
.theme-btn {
    background: var(--gradient-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover {
    background: var(--gradient-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent);
}

/* 主内容 */
main {
    margin-bottom: 4rem;
}

/* 英雄区域 */
.hero {
    text-align: center;
    margin-bottom: 5rem;
    position: relative;
}

.hero-content {
    background: var(--gradient-glass);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 4rem 3rem;
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.hero-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 特性卡片 */
.hero-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: slideUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(30px);
}

.feature-card:nth-child(1) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(2) {
    animation-delay: 0.4s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-glass);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    color: var(--accent);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: var(--gradient-accent);
    color: white;
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-family: 'Space Grotesk', sans-serif;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 使用方式 */
.usage {
    margin-bottom: 4rem;
}

.usage-content {
    background: var(--gradient-glass);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 3rem;
    border: 1px solid var(--border);
    border-radius: 24px;
    box-shadow: var(--shadow);
    text-align: center;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-family: 'Space Grotesk', sans-serif;
}

.code-block {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: 12px;
    margin: 2rem 0;
    position: relative;
    border: 1px solid var(--border);
}

.code-block code {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 1.1rem;
    color: var(--accent);
    display: block;
}

.usage-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 重定向页面 */

.redirect-content {
    text-align: center;
    padding: 4rem;
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 32px;
    box-shadow: var(--shadow);
    max-width: 500px;
    width: 100%;
    margin: 2rem auto;
    position: relative;
    z-index: 2;
}

/* 倒计时 */
.countdown-container {
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 3;
}

.countdown {
    font-size: 6rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    line-height: 1;
    animation: pulse-glow 2s ease-in-out infinite;
    position: relative;
    z-index: 3;
}

@keyframes pulse-glow {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(240, 147, 251, 0.3));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 40px rgba(240, 147, 251, 0.5));
    }
}

.countdown-container p {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* 链接信息 */
.link-info {
    margin-bottom: 2rem;
    padding: 1.25rem;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.link-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.link-info span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
}

/* 跳转按钮 */
.redirect-btn {
    background: var(--gradient-accent);
    border: none;
    color: white;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.redirect-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 159, 28, 0.4);
}

/* 错误消息 */
.error-message {
    margin-top: 2rem;
    padding: 1rem;
    background: rgba(255, 82, 82, 0.1);
    border: 1px solid rgba(255, 82, 82, 0.3);
    border-radius: 12px;
    color: #ff5252;
    display: none;
}

/* 404错误页面样式 */
.error-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.error-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.countdown-container p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

/* 页脚 */
.footer {
    margin-top: 6rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-logo h3 {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-primary);
    margin: 0 0 1rem;
}

.footer-logo .accent {
    color: var(--accent);
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0 0 1.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem;
    }

    .logo h1 {
        font-size: 2rem;
    }

    .hero-content {
        padding: 3rem 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-features {
        grid-template-columns: 1fr;
    }

    .usage-content {
        padding: 2.5rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .redirect-content {
        padding: 2.5rem;
    }

    .countdown {
        font-size: 4rem;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .logo h1 {
        font-size: 1.75rem;
    }

    .hero-content {
        padding: 2.5rem 1.5rem;
    }

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

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .usage-content {
        padding: 2rem 1.5rem;
    }

    .code-block code {
        font-size: 0.9rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    .redirect-content {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }

    .countdown {
        font-size: 3rem;
    }
}