/*
Theme Name: Vaelcosmos
Theme URI: https://vaelcosmos.com
Author: You & Grok
Description: 極簡純文字創作主題 - 白底黑字、零JS、極速載入
Version: 1.3
*/

/* ==================== 基礎重置 ==================== */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #fdfdfd;
    color: #2c2c2c;
    line-height: 1.8;
    font-size: 18px;
}

a {
    color: #000;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ==================== 首頁 Logo（置中 + 頂部留白） ==================== */
.site-logo {
    max-width: 424px;
    margin: 45px auto 30px;     /* 頂部留白 + 左右自動置中 */
    padding: 0 20px;
    text-align: center;
}

.site-logo img {
    width: 100%;
    max-width: 424px;           /* 絕對鎖定原始尺寸 */
    height: auto;               /* 嚴格維持比例 */
    display: block;
    margin: 0 auto;
}

/* ==================== 搜尋框（置中） ==================== */
.search-form {
    max-width: 680px;
    margin: 20px auto 40px;
    padding: 0 20px;
    text-align: center;
}

.search-form input[type="search"] {
    width: 100%;
    max-width: 420px;
    padding: 12px 18px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 6px;
}

/* ==================== 文章列表 ==================== */
.post-list {
    max-width: 680px;
    margin: 40px auto;
    padding: 0 20px;
}

.post-item {
    margin-bottom: 2.4em;
}

.post-item h2 {
    font-size: 1.45em;
    margin: 0 0 8px 0;
    font-weight: 500;
}

.post-item .date {
    font-size: 0.9em;
    color: #666;
    margin: 0;
}

/* ==================== 單篇文章 ==================== */
.single-content {
    max-width: 680px;
    margin: 40px auto;
    padding: 0 20px;
}

.single-content h1 {
    font-size: 2.1em;
    line-height: 1.3;
    margin-bottom: 0.9em;
}

/* ==================== 頁尾 ==================== */
.site-footer {
    max-width: 680px;
    margin: 80px auto 40px;
    padding: 25px 20px 0;
    border-top: 1px solid #eee;
    font-size: 0.92em;
    color: #555;
    text-align: center;
    line-height: 1.7;
}

.site-footer a {
    color: #0066cc;
}

/* ==================== 響應式調整 ==================== */

/* 平板與大手機 */
@media (max-width: 768px) {
    .site-logo {
        margin: 38px auto 28px;
        padding: 0 18px;
    }
    .post-list,
    .single-content,
    .site-footer,
    .search-form {
        padding: 0 15px;
    }
    .single-content h1 {
        font-size: 1.95em;
    }
}

/* 小手機直向 */
@media (max-width: 480px) {
    .site-logo {
        margin: 32px auto 22px;
        padding: 0 15px;
    }
    body {
        font-size: 17px;
    }
    .search-form input[type="search"] {
        padding: 11px 16px;
    }
}

/* 手機橫向模式 */
@media (max-width: 768px) and (orientation: landscape) {
    .site-logo {
        margin: 35px auto 25px;
        max-width: 380px;   /* 橫向時稍微縮小一點，更好看 */
    }
}