/* 导入Google字体 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* Tailwind 配置和自定义工具类 */
@layer utilities {
    .content-auto {
        content-visibility: auto;
    }
    .text-shadow {
        text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    .text-shadow-lg {
        text-shadow: 0 4px 8px rgba(0,0,0,0.2);
    }
    .transition-custom {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .backdrop-blur-xs {
        backdrop-filter: blur(2px);
    }
    .glass {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.2);
    }
}

/* 全局样式 */
* {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #6366f1, #06b6d4);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #4f46e5, #0891b2);
}

/* 动画关键帧 */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(1deg); }
    66% { transform: translateY(5px) rotate(-1deg); }
}

@keyframes glow {
    0% { text-shadow: 0 0 3px rgba(99, 102, 241, 0.3); }
    100% { text-shadow: 0 0 12px rgba(99, 102, 241, 0.5), 0 0 18px rgba(6, 182, 212, 0.4); }
}

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

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px) scale(0.95); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0) scale(1); 
    }
}

@keyframes pulse-slow {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

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

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

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

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

/* 粒子效果 */
.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: linear-gradient(45deg, #6366f1, #06b6d4);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 6s infinite ease-in-out;
}

/* 玻璃态效果 */
.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* 渐变文字效果 */
.gradient-text {
    background: linear-gradient(135deg, #6366f1, #06b6d4, #f59e0b);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient 3s ease infinite;
}

/* 发光按钮效果 */
.glow-button {
    position: relative;
    overflow: hidden;
}

.glow-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.glow-button:hover::before {
    left: 100%;
}

/* 卡片悬浮效果 */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 响应式优化 */
@media (max-width: 768px) {
    .hero-text {
        font-size: clamp(1.5rem, 5vw, 2.5rem);
    }
    
    .particle {
        display: none;
    }
    
    .glass-card {
        backdrop-filter: blur(5px);
    }
}

@media (max-width: 640px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .glass-card {
        background: rgba(0, 0, 0, 0.2);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f4f6;
    border-top: 4px solid #6366f1;
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}

/* 自定义选择样式 */
::selection {
    background: rgba(99, 102, 241, 0.2);
    color: #1f2937;
}

::-moz-selection {
    background: rgba(99, 102, 241, 0.2);
    color: #1f2937;
}