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

:root {
    --color-bg: #050505;
    --color-primary: #00F3FF;
    --color-secondary: #7000FF;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    background-color: var(--color-bg);
    color: white;
    overflow-x: hidden;
}

/* ===== 加载动画 ===== */
#loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.8s ease-out;
}

#loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    width: 60px;
    height: 60px;
    border: 3px solid transparent;
    border-top-color: var(--color-primary);
    border-right-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== Canvas 容器 ===== */
#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
}

/* ===== 内容层 ===== */
.content-layer {
    position: relative;
    z-index: 10;
}

/* ===== 玻璃态效果 ===== */
.glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

/* ===== 渐变文字 ===== */
.text-gradient {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
    border-radius: 4px;
}

/* ===== 按钮样式 ===== */
.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #000;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    transform: scale(1.05);
    border-color: rgba(0, 243, 255, 0.5);
}