/* ====== 基础布局（触底页脚） ====== */
html, body {
    height: 100%;
    margin: 0;
}

body {
  font-family:
    "PingFang SC", "Microsoft YaHei", "Noto Sans SC",
    "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  transition: background .25s, color .25s;
}

:root {
  --theme-color: #2f80ed;       /* 默认主题色 */
  --theme-hover-color: #1a5fd0; /* 鼠标悬停时的颜色，可选 */
}

a {
  color: var(--theme-color);
  text-decoration: none; /* 去掉下划线，可按需 */
}

a:hover,
a:focus {
  color: var(--theme-hover-color);
  text-decoration: underline; /* 悬停时加下划线，更明显 */
}


/* 标题稍微粗一点，保持一致 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
}

/* ========== Code & JSON ========== */
code, pre, kbd, samp,
textarea, .json-panel textarea, .json-tree {
  font-family:
    "Fira Code",         /* 推荐开发者字体 */
    "Consolas",          /* Windows 默认等宽 */
    "Courier New",       /* 通用等宽 */
    monospace;
  font-size: 0.95em;
}

/* ========== Special UI ========== */
/* 按钮 / 表单使用系统 UI 字体，保持一致性 */
button, input, select, textarea {
  font-family: inherit;
}

/* ========== Dark Mode Adaptation ========== */
@media (prefers-color-scheme: dark) {
   body {
    background: radial-gradient(1000px 500px at 70% -10%, rgba(59,130,246,.15), transparent 70%),
                linear-gradient(180deg, #0b0f1a 0%, #101631 100%);
    color: #e8e9ea;
  }
  .json-panel textarea, .json-tree {
    background: #101631;
    color: #c7cfdd;
  }
}

.wrap {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

main {
    flex: 1;
}

/* ====== 头部（毛玻璃导航） ====== */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: saturate(120%) blur(8px);
    box-shadow: var(--shadow);
    gap: 14px;
    padding: 12px 16px;
    margin: 4px 0px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #0d4bcf, #2f80ed);
    display: grid;
    place-items: center;
    color: #fff;
    font-weight: 800;
    box-shadow: 0 6px 16px rgba(13, 75, 207, .20);
}

.slogan {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: .2px;
}

.tag {
    font-size: 12px;
    color: #4b5b78;
    background: linear-gradient(90deg, #eef4ff, #f6f9ff);
    padding: 4px 10px;
    border-radius: 999px;
}

.nav a {
    display: inline-block;
    color: #3b4a66;
    background: #ffffffc9;
    border: 1px solid rgba(20, 40, 80, .08);
    border-radius: 12px;
    margin-left: 8px;
    padding: 8px 12px;
    box-shadow: 0 4px 10px rgba(10, 37, 64, .05);
    transition: .2s;
    text-decoration: none;
}

.nav a:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(10, 37, 64, .10);
}

.nav a.active {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

.nav a.active:hover {
    background: #1d4ed8;
}

/* ====== 主面板 & 卡片网格 ====== */
.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 18px 18px;
    box-shadow: var(--shadow);
}

.h1 {
    font-size: clamp(22px, 2.6vw, 32px);
    margin: 4px 0 8px;
    letter-spacing: .2px;
}

h1, h2 {
    background: var(--card);
    color: var(--text);
}

.sub {
    color: #5c6d88;
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(240px, 1fr));
    gap: 16px;
    margin-top: 14px;
}

@media (max-width: 1000px) {
    .grid {
        grid-template-columns: repeat(2, minmax(240px, 1fr));
    }
}

@media (max-width: 640px) {
    .grid {
        grid-template-columns: 1fr;
    }
}

.card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 130px;
    padding: 14px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 30px rgba(10, 37, 64, .12);
}

.card b {
    font-size: 16px;
}

.card .pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(47, 128, 237, .20);
    background: linear-gradient(180deg, #ffffff, #f7faff);
}

.card .pill::after {
    content: "→";
    margin-left: 8px;
    opacity: .9;
    transition: transform .18s;
}

.card:hover .pill::after {
    transform: translateX(2px);
}

/* ====== 页脚（触底 + 分层） ====== */
footer.foot {
    margin-bottom: 16px;
    background: var(--card);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 12px 10px;
    text-align: center;
    font-size: 14px;
    color: var(--muted);
}

footer .beian {
    color: #3b5bd6;
    text-decoration: none;
    border-bottom: 1px dotted rgba(59, 91, 214, .4);
}

footer .beian:hover {
    border-bottom-color: rgba(59, 91, 214, .8);
}

.sr {
    position: absolute;
    clip: rect(1px, 1px, 1px, 1px);
    padding: 0;
    border: 0;
    height: 1px;
    width: 1px;
    overflow: hidden
}

.instructions {
}

.grid .card {
    min-height: 150px; /* 根据实际高度调整 */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* 文章正文排版（可选） */
article.content h2 {
    font-size: 1.35rem;
    margin-top: 1.2rem;
}

article.content h3 {
    font-size: 1.15rem;
    margin-top: 1rem;
}

article.content p {
    margin: .6rem 0;
}

article.content pre, article.content code {
    background: var(--bg); /* 默认使用背景色变量 */
    border: 1px solid var(--border); /* 默认使用边框颜色变量 */
    border-radius: 8px;
    padding: 12px; /* 增加内边距，增强可读性 */
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono","Courier New", monospace; /* 使用等宽字体 */
}

article.content pre {
    padding: 12px;
    overflow: auto;
}

article.content code {
    padding: 2px 6px;
}

/* 深色模式覆盖 */
@media (prefers-color-scheme: dark) {
  article.content code {
    background: #1e293b;        /* 深色背景，接近 slate-800 */
    border: 1px solid #334155;  /* 深色边框，接近 slate-700 */
    color: #e2e8f0;             /* 浅色文字，接近 slate-200 */
  }
}

article.content a {
    color: #2563eb;
    text-decoration: none;
}

article.content a:hover {
    text-decoration: underline;
}

/* —— 专题卡片小修复 —— */
.sub.auto {
    height: auto !important;
}

/* 用于覆盖 60px 的默认高度 */
.card a.pill { /* 让按钮用 pill 风格，不要紫色下划线 */
    text-decoration: none;
    color: inherit;
}

.card a.pill:hover {
    border-color: rgba(37, 99, 235, .35);
}

.logo a {
    color: inherit;
    text-decoration: none;
    display: inline-block;
}

:root {
    /* 浅色主题 */
    --bg: #F5F8FF; /* 页面背景 */
    --card: #FFFFFF; /* 卡片/头部/底部背景 */
    --text: #0a2540; /* 主文字 */
    --muted: #5b6168; /* 次要文字 */
    --border: rgba(20, 40, 80, .12);
    --shadow: 0 6px 24px rgba(10, 37, 64, .06);
}

@media (prefers-color-scheme: dark) {
    :root {
        /* 页面背景比卡片更深 */
        --bg: #0b0f1a; /* 页面底色 */
        --card: #1a1d2b; /* 卡片/头部/底部背景，稍亮 */
        --text: #f0f2f5; /* 主文字，更亮 */
        --muted: #a9b2c3; /* 次要文字，中灰 */
        --border: #30384d; /* 边框，浅灰蓝 */
        --shadow: 0 6px 24px rgba(0, 0, 0, .5); /* 投影更深一点 */
    }
}

body {
    background: var(--bg);
    color: var(--text);
    transition: background .25s, color .25s;
}

/* —— 卡片式页脚：浅色为默认；若你未定义 CSS 变量，也能显示正确 —— */
.foot {
    margin: 24px 0 40px
}

.foot__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border, rgba(20, 40, 80, .12));
    border-radius: 14px;
    background: var(--card, #ffffff); /* 浅色默认白底 */
    box-shadow: var(--shadow, 0 6px 24px rgba(10, 37, 64, .06));
}

.foot__brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted, #5b6168);
    font-size: 14px
}

.foot__site {
    color: var(--text, #0a2540);
    font-weight: 600
}

.foot__dot {
    opacity: .6
}

.foot__links {
    display: flex;
    align-items: center;
    gap: 6px
}

.foot__links a {
    text-decoration: none;
    color: inherit;
    opacity: .95
}

.foot__links a:hover {
    opacity: 1
}

.foot__links .sep {
    color: var(--muted, #5b6168);
    margin: 0 4px
}

/* 友情链接条（次卡片） */
.foot__friends {
    margin-top: 12px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    border-top: 1px dashed var(--border); /* 分隔线 */
    background: transparent; /* 移除背景块 */
}

.foot__friends .label {
    margin-right: 6px;
    font-weight: 500;
    color: var(--text);
}

.foot__friends .friend {
    text-decoration: none;
    color: var(--text);
    padding: 2px 8px;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.foot__friends .friend:hover {
    background: var(--card);
    color: var(--accent, #4f46e5);
}

.foot__friends .sep {
    color: var(--muted, #5b6168);
    margin: 0 4px
}

/* 深色主题自动适配（随系统切换） */
@media (prefers-color-scheme: dark) {

      article.content pre, article.content code {
        background: #1a202c; /* 深色背景 */
        border: 1px solid #2d3748; /* 深色边框 */
        color: var(--text); /* 使用主文字颜色 */
    }

    .foot__inner {
        background: var(--card, #0f1320);
        border-color: var(--border, #263043);
        box-shadow: 0 6px 24px rgba(0, 0, 0, .25);
    }

    .foot__brand {
        color: #a9adb2
    }

    .foot__site {
        color: #e8e9ea
    }

    .foot__friends {
        background: transparent;
        border-color: var(--border, #263043);
    }

    .foot__friends .friend {
        border-color: var(--border, #263043);
        background: #101631;
        color: #c7cfdd;
    }
}

/* 窄屏堆叠 */
@media (max-width: 720px) {
    .foot__inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px
    }

    .foot__links {
        gap: 8px
    }

    .foot__friends {
        padding: 10px 12px
    }
}

.site-brand {
   display: flex;
    align-items: center;
    gap: 12px;
}

.brand-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #4f46e5;
    box-shadow: 0 0 0 4px color-mix(in srgb, #4f46e5 30%, transparent)
}

.brand-badge {
    font-size: 12px;
    padding: 2px 8px;
    border: 1px solid rgba(120, 130, 160, .2);
    border-radius: 999px;
    color: var(--muted, #a9adb2)
}

.global-message {
  position: fixed;
  top:100px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card, #fff);
  border: 1px solid var(--border, #e5e7eb);
  padding: 0.6em 1.2em;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  font-size: 0.9em;
  color: var(--text, #111);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 9999;
}
.global-message.show {
  opacity: 1;
}

.tool-footer {
  margin-top: 2em;
  padding: 1em;
  border-top: 1px solid var(--border);
  font-size: 0.85em;
  color: var(--muted, #555);
  text-align: center;
  background: var(--card, #fafafa);
  border-radius: 0 0 12px 12px;
}

.tool-footer a {
  color: #2563eb;
  font-weight: 500;
  text-decoration: none;
}

.tool-footer a:hover {
  text-decoration: underline;
}

.tool-footer .github-star {
  margin-top: 0.8em;
}