/* ====== 基本設定 ====== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --bg: #f0f2f5;
    --white: #ffffff;
    --text: #050505;
    --text-secondary: #65676b;
    --border: #dadde1;
    --like: #1877f2;
    --hover: #f2f2f2;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* ====== 導航列 ====== */
.navbar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
}

.nav-brand {
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-menu a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: background 0.2s;
}

.nav-menu a:hover {
    background: rgba(255,255,255,0.2);
}

/* ====== 版面配置 ====== */
.container {
    max-width: 1200px;
    margin: 20px auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
    padding: 0 20px;
}

.sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.profile-card {
    background: var(--white);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.profile-card .avatar {
    font-size: 4rem;
    margin-bottom: 10px;
}

.profile-card h2 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.profile-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.profile-card .stats {
    display: flex;
    justify-content: space-around;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

.profile-card .stats div {
    text-align: center;
}

.profile-card .stats strong {
    color: var(--primary);
    font-size: 1.2rem;
}

.profile-card .stats span {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* ====== 主內容 ====== */
.main-content {
    min-width: 0;
}

.section { display: none; }
.section.active { display: block; }

.feed-container {
    max-width: 600px;
    margin: 0 auto;
}

.section-title {
    margin-bottom: 15px;
    color: var(--text);
}

/* ====== Facebook 貼文卡片 ====== */
.fb-post {
    background: var(--white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    overflow: hidden;
}

.fb-post-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
}

.fb-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 10px;
    flex-shrink: 0;
}

.fb-post-info {
    flex: 1;
}

.fb-name {
    font-weight: 600;
    color: var(--text);
}

.fb-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.fb-post-content {
    padding: 0 16px 12px;
}

.fb-post-content h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text);
}

.fb-post-content p {
    color: var(--text);
    line-height: 1.6;
    white-space: pre-wrap;
}

.fb-post-footer {
    display: flex;
    justify-content: space-around;
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
}

.fb-post-footer span {
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background 0.2s;
}

.fb-post-footer span:hover {
    background: var(--hover);
}

/* ====== 履歷專用 ====== */
.resume-item {
    display: flex;
    margin-bottom: 15px;
    padding-left: 15px;
    border-left: 3px solid var(--primary);
}

.resume-item .year {
    min-width: 90px;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background: var(--bg);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text);
}

/* ====== 作品集網格 ====== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.project-card {
    background: var(--white);
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.project-card h3 {
    margin-bottom: 8px;
}

.project-card h3 a {
    color: var(--primary);
    text-decoration: none;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.project-card .tags {
    display: flex;
    align-items: center;
    gap: 10px;
}

.tag {
    background: var(--bg);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.star {
    color: #f5c518;
    font-size: 0.9rem;
}

/* ====== Footer ====== */
.footer {
    text-align: center;
    padding: 30px;
    color: var(--text-secondary);
    margin-top: 40px;
    border-top: 1px solid var(--border);
}

.footer a {
    color: var(--primary);
    text-decoration: none;
}

/* ====== RWD ====== */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .nav-menu {
        gap: 10px;
    }
    
    .nav-menu a {
        padding: 6px 10px;
        font-size: 0.9rem;
    }
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}