/* ======================== 
   全局样式与变量
   ======================== */
:root {
    --bg-color: #e0e5ec;          /* 经典的 Neumorphism 背景色 */
    --text-primary: #37474f;
    --text-secondary: #78909c;
    --accent-color: #0984e3;      /* 宁静蓝 */
    --tag-bg: #d1d9e6;
    
    /* Neumorphism 核心阴影变量 */
    --neo-shadow-out: 8px 8px 16px #b8b9be, -8px -8px 16px #fff;
    --neo-shadow-in: inset 8px 8px 16px #b8b9be, inset -8px -8px 16px #fff;
    
    --transition-base: all 0.3s ease;
}

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

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: 50px;
}

/* ======================== 
   Neumorphism 公共组件
   ======================== */
.neo-box {
    background: var(--bg-color);
    border-radius: 20px;
    box-shadow: var(--neo-shadow-out);
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 12px 12px 24px #b8b9be, -12px -12px 24px #fff;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ======================== 
   Header (时间栏)
   ======================== */
.neo-header {
    display: flex;
    justify-content: space-between;
    padding: 15px 5%;
    background: var(--bg-color);
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    font-size: 0.9rem;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.neo-header i {
    margin-right: 8px;
    color: var(--accent-color);
}

#digital-time {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
}

/* ======================== 
   中间 Container
   ======================== */
.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

/* 个人卡片 */
.profile-card {
    padding: 40px;
    text-align: center;
    margin-bottom: 40px;
}

.avatar-wrapper {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--bg-color);
    box-shadow: var(--neo-shadow-in); /* 内阴影让头像陷进去，有质感 */
    padding: 10px;
}

.avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    background-color: #b0bec5; /* 没头像时的占位色 */
}

.name {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.motto {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.tag-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    padding: 6px 15px;
    background: var(--tag-bg);
    color: var(--text-primary);
    border-radius: 20px;
    font-size: 0.85rem;
    box-shadow: inset 2px 2px 5px rgba(0,0,0,0.05);
}

.tag i {
    margin-right: 5px;
    color: var(--accent-color);
}

/* ======================== 
   有趣的东西 (项目区)
   ======================== */
.section-title {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--text-secondary);
    padding-left: 10px;
    border-left: 4px solid var(--accent-color);
}

.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.content-card {
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--text-secondary);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    box-shadow: var(--neo-shadow-in);
}

.text-accent {
    color: var(--accent-color) !important;
}

.content-card h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.content-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-grow: 1; /* 让文字撑满空间 */
}

/* 占位卡片样式 */
.is-placeholder {
    opacity: 0.6;
    border: 2px dashed #b8b9be;
    box-shadow: none;
    background: rgba(224, 229, 236, 0.5);
}

/* ======================== 
   Footer
   ======================== */
.neo-footer {
    text-align: center;
    margin-top: 60px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.social-links {
    margin-bottom: 15px;
}

.social-links a {
    font-size: 1.5rem;
    margin: 0 15px;
    transition: var(--transition-base);
}

.social-links a:hover {
    color: var(--accent-color);
    transform: scale(1.1);
}

/* 移动端适配 */
@media (max-width: 600px) {
    .neo-header {
        flex-direction: column;
        align-items: center;
        gap: 5px;
    }
    .profile-card {
        padding: 20px;
    }
    .name {
        font-size: 1.8rem;
    }
}