/* ==========================================================================
   轻现代 (Modern) 主题 — Qingmo
   清爽卡片风格：无衬线字体、柔和阴影、留白
   ========================================================================== */
:root {
    --qm-bg: #f4f6fb;
    --qm-card: #ffffff;
    --qm-soft: #f8fafd;
    --qm-input: #ffffff;
    --qm-text: #2b3a4a;
    --qm-text2: #46576a;
    --qm-muted: #7c8a9a;
    --qm-border: #e6ebf2;
    --qm-accent: #3b82f6;
    --qm-accent-soft: #eaf1fe;
    --qm-code-bg: #f1f4f9;
    --qm-glow-a: #e4ecff;
    --qm-glow-b: #e8f3ff;
    --qm-radius: 12px;
    --qm-shadow: 0 6px 24px rgba(31, 60, 94, 0.06);
    color-scheme: light;
}

/* 深色模式 */
html[data-theme="dark"] {
    --qm-bg: #0b1220;
    --qm-card: #141d2e;
    --qm-soft: #0f1a2b;
    --qm-input: #1c2942;
    --qm-text: #dbe4f0;
    --qm-text2: #a9b7c8;
    --qm-muted: #8b98a9;
    --qm-border: #263449;
    --qm-accent: #60a5fa;
    --qm-accent-soft: #1e3a5f;
    --qm-code-bg: #0d1522;
    --qm-glow-a: rgba(37, 99, 235, 0.16);
    --qm-glow-b: rgba(96, 165, 250, 0.10);
    --qm-shadow: 0 8px 26px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", Roboto, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.8;
    color: var(--qm-text);
    background:
        radial-gradient(1100px 500px at 12% -6%, var(--qm-glow-a) 0%, transparent 55%),
        radial-gradient(900px 420px at 96% 0%, var(--qm-glow-b) 0%, transparent 50%),
        var(--qm-bg);
    background-attachment: fixed;
    margin: 0;
    padding: 28px 14px 60px;
}

a { color: var(--qm-accent); text-decoration: none; }
a:hover { color: var(--qm-accent); filter: brightness(1.15); }

/* ---------- 主容器卡片 ---------- */
.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 26px 30px;
    background: var(--qm-card);
    border: 1px solid var(--qm-border);
    border-radius: var(--qm-radius);
    box-shadow: var(--qm-shadow);
}

/* ---------- 头部 ---------- */
.header {
    padding: 4px 2px 18px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--qm-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 18px;
}
.header .site-title {
    order: 1;
    margin: 0;
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 0.2px;
}
.header .site-title a { color: var(--qm-text); }
.header .site-title a:hover { color: var(--qm-accent); }
.header .desc {
    order: 2;
    flex-basis: 100%;
    margin: 0;
    color: var(--qm-muted);
    font-size: 13px;
}

.header .nav {
    order: 3;
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}
.header .nav a {
    color: var(--qm-text);
    font-size: 14px;
    padding: 5px 13px;
    border-radius: 999px;
    transition: background 0.2s ease, color 0.2s ease;
}
.header .nav a:hover {
    background: var(--qm-accent-soft);
    color: var(--qm-accent);
    text-decoration: none;
}
.header .nav .nav-sep { display: none; } /* 用间距取代竖线 */
.header .nav .theme-toggle {
    margin-left: auto;
    background: transparent !important;
    border: 1px solid var(--qm-border) !important;
    border-radius: 999px !important;
    padding: 4px 12px !important;
    color: var(--qm-text) !important;
    font-size: 15px !important;
}
.header .nav .theme-toggle:hover { background: var(--qm-accent-soft) !important; }

/* ---------- 搜索框 ---------- */
.search-box {
    order: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    min-width: 240px;
}
.search-input {
    flex: 1;
    min-width: 150px;
    padding: 8px 14px;
    border: 1px solid var(--qm-border);
    border-radius: 999px;
    font-family: inherit;
    font-size: 13px;
    color: var(--qm-text);
    background: var(--qm-soft);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.search-input:focus {
    outline: none;
    border-color: var(--qm-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.search-btn {
    border: none;
    background: var(--qm-accent);
    color: #fff;
    border-radius: 999px;
    padding: 8px 18px;
    font-family: inherit;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
}
.search-btn:hover { background: #1d4ed8; }
.search-btn:active { transform: scale(0.97); }

/* ---------- 两栏主体 ---------- */
.main {
    float: left;
    width: 67%;
    padding-right: 4px;
}
.sidebar { float: right; width: 30%; }

/* 侧栏卡片 */
.sidebar .box {
    background: var(--qm-card);
    border: 1px solid var(--qm-border);
    border-radius: var(--qm-radius);
    box-shadow: 0 2px 10px rgba(31, 60, 94, 0.04);
    padding: 16px 18px;
    margin-bottom: 16px;
}
.sidebar .box h3 {
    margin: 0 0 10px;
    font-size: 15px;
    font-weight: 700;
    color: var(--qm-text);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--qm-accent-soft);
    display: flex;
    align-items: center;
}
.sidebar .box h3::after {
    content: "";
    flex: 1;
    margin-left: 10px;
    height: 2px;
    background: var(--qm-accent-soft);
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin-bottom: 7px; font-size: 13px; }
.sidebar li a { color: var(--qm-muted); }
.sidebar li a:hover { color: var(--qm-accent); }

.clear { clear: both; }

/* ---------- 文章列表 ---------- */
.post-list { margin-bottom: 10px; }
.post-item {
    background: var(--qm-card);
    border: 1px solid var(--qm-border);
    border-radius: var(--qm-radius);
    padding: 18px 20px;
    margin-bottom: 16px;
    transition: transform 0.15s ease, box-shadow 0.2s ease;
}
.post-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(31, 60, 94, 0.1);
}
.post-item h2 { margin: 0 0 8px; font-size: 18px; line-height: 1.5; }
.post-item h2 a { color: var(--qm-text); }
.post-item h2 a:hover { color: var(--qm-accent); }
.post-meta { color: var(--qm-muted); font-size: 12px; margin-bottom: 10px; }
.post-meta a { color: var(--qm-muted); }
.post-meta a:hover { color: var(--qm-accent); }
.post-summary { font-size: 14px; color: var(--qm-text2); }

/* ---------- 文章详情 ---------- */
.post-content h1 {
    font-size: 24px;
    margin: 0 0 12px;
    line-height: 1.4;
}
.post-content .content { font-size: 15px; }
.post-content .content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}
.post-content .content pre {
    background: #0f172a;
    color: #e2e8f0;
    padding: 14px;
    border-radius: 8px;
    overflow-x: auto;
}
.post-content .content code {
    background: var(--qm-accent-soft);
    color: var(--qm-accent);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 0.92em;
}
.post-content .content pre code { background: transparent; color: inherit; padding: 0; }

/* 标签 */
.tag-list { margin-top: 14px; }
.tag-list a {
    display: inline-block;
    background: var(--qm-accent-soft);
    color: var(--qm-accent);
    font-size: 12px;
    padding: 2px 12px;
    border-radius: 999px;
    margin-right: 6px;
    margin-bottom: 4px;
}
.tag-list a:hover { background: var(--qm-accent); color: #fff; text-decoration: none; }

/* ---------- 文章页脚 ---------- */
.post-footer {
    margin-top: 20px;
    background: var(--qm-soft);
    border: 1px solid var(--qm-border);
    border-left: 3px solid var(--qm-accent);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 13px;
    line-height: 1.9;
    overflow-wrap: break-word;
}
.post-footer p { margin: 0; }
.post-footer .pf-label { color: var(--qm-muted); font-weight: 600; }

/* ---------- 友链页 ---------- */
.links-page h2 { font-size: 24px; }
.links-count { color: var(--qm-muted); font-size: 13px; }
.friend-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
    margin-top: 6px;
}
.friend-link {
    background: var(--qm-card);
    border: 1px solid var(--qm-border);
    border-radius: var(--qm-radius);
    padding: 16px;
    transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.friend-link:hover {
    transform: translateY(-2px);
    border-color: var(--qm-accent);
    box-shadow: 0 8px 22px rgba(59, 130, 246, 0.12);
}
.friend-link .friend-link-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--qm-text);
    display: inline-block;
}
.friend-link .friend-link-name::before {
    content: "↗ ";
    color: var(--qm-accent);
}
.friend-link:hover .friend-link-name { color: var(--qm-accent); }
.friend-link .friend-link-desc {
    margin: 6px 0 0;
    font-size: 12px;
    color: var(--qm-muted);
    line-height: 1.6;
}

/* ---------- 评论 ---------- */
.comment-list { margin-top: 24px; border-top: 1px solid var(--qm-border); padding-top: 16px; }
.comment-list h3 { font-size: 16px; }
.comment-item {
    border: 1px solid var(--qm-border);
    border-radius: 10px;
    background: var(--qm-soft);
    padding: 12px 16px;
    margin-bottom: 10px;
}
.comment-item .comment-meta { font-size: 12px; color: var(--qm-muted); }
.comment-item .comment-content { margin-top: 4px; font-size: 14px; }
/* 图片自适应：全局防撑破版面；评论区缩略显示（可点击放大） */
img { max-width: 100%; height: auto; }
.post-content .content img,
.comment-content img { cursor: zoom-in; }
.comment-content img { max-width: min(100%, 240px); border-radius: 6px; vertical-align: middle; }
.comment-content,
.post-content .content { overflow-wrap: anywhere; word-break: break-word; }

/* 嵌套回复 */
.comment-children {
    margin: 10px 0 0 14px;
    padding-left: 14px;
    border-left: 2px solid var(--qm-accent-soft);
}
.reply-badge {
    display: inline-block;
    background: var(--qm-accent-soft);
    color: var(--qm-accent);
    border-radius: 4px;
    font-size: 11px;
    padding: 0 6px;
    margin-right: 4px;
}
.reply-btn {
    margin-top: 6px;
    padding: 2px 12px !important;
    font-size: 12px !important;
    background: transparent !important;
    color: var(--qm-accent) !important;
    border: 1px solid var(--qm-border) !important;
    border-radius: 999px !important;
}
.reply-btn:hover { background: var(--qm-accent-soft) !important; }
.emoji-bar { margin-bottom: 8px; font-size: 13px; color: var(--qm-muted); }
.emoji-bar .em {
    background: #fff !important;
    border: 1px solid var(--qm-border) !important;
    border-radius: 8px !important;
    padding: 0 6px !important;
    margin-right: 3px;
    cursor: pointer;
}
.emoji-bar .em:hover { background: var(--qm-accent-soft) !important; }
.comment-empty { color: var(--qm-muted); }
.comment-item { scroll-margin-top: 80px; }
.at-mention {
    color: var(--qm-accent);
    font-weight: 600;
    background: var(--qm-accent-soft);
    border-radius: 4px;
    padding: 0 4px;
}
.at-mention:hover { text-decoration: underline; }
.comment-form {
    margin-top: 16px;
    background: var(--qm-soft);
    border: 1px solid var(--qm-border);
    border-radius: var(--qm-radius);
    padding: 16px 18px;
}
.comment-form label { display: block; font-size: 13px; margin-bottom: 4px; color: var(--qm-muted); }
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form textarea {
    width: 100%;
    border: 1px solid var(--qm-border);
    border-radius: 8px;
    padding: 8px 12px;
    font-family: inherit;
    font-size: 14px;
    margin-bottom: 10px;
    color: var(--qm-text);
    background: var(--qm-input);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--qm-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}
.comment-form textarea { height: 90px; }

/* 通用按钮 */
button, input[type="submit"] {
    border: none;
    background: var(--qm-accent);
    color: #fff;
    border-radius: 8px;
    padding: 8px 20px;
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s ease;
}
button:hover, input[type="submit"]:hover { background: var(--qm-accent); filter: brightness(1.1); }

/* 分页与提示 */
.pagination { text-align: center; margin: 22px 0; font-size: 13px; color: var(--qm-muted); }
.pagination a { margin: 0 6px; }
.msg {
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 14px;
    font-size: 13px;
}
.msg.success { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.msg.error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
html[data-theme="dark"] .msg.success {
    background: rgba(16, 185, 129, 0.12); color: #6ee7b7; border-color: rgba(16, 185, 129, 0.35);
}
html[data-theme="dark"] .msg.error {
    background: rgba(239, 68, 68, 0.12); color: #fca5a5; border-color: rgba(239, 68, 68, 0.35);
}

/* ---------- 页脚 ---------- */
.footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--qm-border);
    text-align: center;
    font-size: 12px;
    color: var(--qm-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
    body { padding: 10px 8px 40px; }
    .container { padding: 16px; }
    .header .search-box { margin-left: 0; width: 100%; }
    .main, .sidebar { float: none; width: 100%; }
    .friend-links { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .friend-links { grid-template-columns: 1fr; }
}