/* 定義變數：土黃色與黑色 */
:root {
    --primary-yellow: #d4a373; /* 經典土黃/赭石色 */
    --light-yellow: #fefae0;   /* 極淡的米黃背景 */
    --dark-black: #1a1a1a;     /* 深黑色 */
    --gray: #666666;
    --border-color: #e0e0e0;
}

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

body {
    background-color: var(--light-yellow);
    color: var(--dark-black);
    font-family: 'Roboto', 'Noto Sans TC', sans-serif;
    line-height: 1.6;
}

.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.navbar {
    background-color: var(--light-yellow);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Noto Serif TC', serif;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style: none;
    align-items: center;
}

nav ul li {
    margin-left: 20px;
}

nav a {
    text-decoration: none;
    color: var(--dark-black);
    font-size: 0.9rem;
}

.nav-btn a {
    background-color: var(--dark-black);
    color: var(--primary-yellow);
    padding: 8px 16px;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 0;
}

.profile-placeholder {
    width: 80px;
    height: 80px;
    background-color: var(--primary-yellow);
    color: var(--dark-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-weight: bold;
    font-size: 1.5rem;
}

h1 {
    font-family: 'Noto Serif TC', serif;
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.bio {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 20px;
    font-style: italic;
}

.tags {
    margin-bottom: 30px;
}

.tags span {
    background-color: var(--primary-yellow);
    color: var(--dark-black);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin: 0 5px;
    font-weight: bold;
}

.subscribe-box {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.subscribe-box input {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    width: 250px;
}

.subscribe-box button {
    background-color: var(--dark-black);
    color: var(--primary-yellow);
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

/* Feed Section */
.divider {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 40px 0;
}

.feed h2 {
    font-family: 'Noto Serif TC', serif;
    margin-bottom: 30px;
}

.post-card {
    margin-bottom: 40px;
}

.post-meta {
    font-size: 0.75rem;
    color: var(--primary-yellow);
    font-weight: bold;
    margin-bottom: 5px;
}

.post-card h3 a {
    text-decoration: none;
    color: var(--dark-black);
    font-size: 1.5rem;
    font-family: 'Noto Serif TC', serif;
}

.post-card p {
    color: var(--gray);
    margin: 10px 0;
}

.post-footer {
    font-size: 0.8rem;
    color: #999;
}

footer {
    text-align: center;
    padding: 40px;
    font-size: 0.8rem;
    color: var(--gray);
}