@charset "UTF-8";
@import url("tokens.css");

/* zktool 工具页公共骨架：reset、背景氛围、返回条、标题与 SEO 说明区。
   所有工具页（含自带布局的大工具页）统一引用，保证“同一双手做的”观感；
   页面内容区的组件样式仍留在各页或 tool-page.css。 */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { min-height: 100%; scroll-behavior: smooth; }

body {
    min-height: 100vh;
    min-height: 100dvh;
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.bg-fx {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(ellipse 55% 42% at 15% -8%, var(--brand-soft), transparent 62%),
        radial-gradient(ellipse 42% 34% at 88% 0%, rgba(14, 165, 233, 0.06), transparent 58%),
        radial-gradient(ellipse 46% 35% at 52% 110%, rgba(16, 185, 129, 0.045), transparent 62%),
        var(--bg);
}

.bg-fx::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 44px 44px;
    -webkit-mask-image: radial-gradient(ellipse 80% 62% at 50% 0%, #000 25%, transparent 88%);
    mask-image: radial-gradient(ellipse 80% 62% at 50% 0%, #000 25%, transparent 88%);
}

.wrap {
    width: 100%;
    max-width: min(1320px, 100%);
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0 auto;
    padding: clamp(1rem, 3.5vw, 2rem)
        calc(clamp(1rem, 3vw, 1.75rem) + env(safe-area-inset-right))
        max(2.5rem, env(safe-area-inset-bottom))
        calc(clamp(1rem, 3vw, 1.75rem) + env(safe-area-inset-left));
}

.top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.3rem;
}

.back {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--text-2);
    text-decoration: none;
    font-size: 0.88rem;
    padding: 0.5rem 0.95rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.back:hover, .back:focus-visible {
    color: var(--text);
    border-color: var(--border-hover);
    outline: none;
    transform: translateX(-2px);
}

.meta {
    color: var(--text-3);
    font-family: var(--mono);
    font-size: 0.78rem;
}

/* palette.js 注入的顶部操作区（搜索 / 主题切换）挂在 .top 内，样式由 palette.js 自带 */

/* ── 面包屑（toolkit.js 用 registry 替换 .back 生成）── */
.zk-crumb {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    font-size: 0.85rem;
    padding: 0.5rem 0.95rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}
.zk-crumb a { color: var(--text-2); text-decoration: none; }
.zk-crumb a:hover, .zk-crumb a:focus-visible { color: var(--brand); outline: none; }
.zk-crumb-sep { color: var(--text-3); }
.zk-crumb-cur { color: var(--text); font-weight: 600; }
@media (max-width: 560px) { .zk-crumb-cur { max-width: 11em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } }

/* ── 全部工具下拉菜单（toolkit.js 注入）── */
.zk-nav-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 0.4rem);
    z-index: 1100;
    min-width: 15rem;
    max-height: min(26rem, 70vh);
    overflow-y: auto;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface, #fff);
    box-shadow: 0 16px 48px -16px rgba(0, 0, 0, 0.35);
}
.zk-nav-g {
    padding: 0.55rem 0.65rem 0.25rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--text-3);
}
.zk-nav-g:not(:first-child) { border-top: 1px solid var(--border); margin-top: 0.25rem; padding-top: 0.7rem; }
.zk-nav-menu a[role="menuitem"] {
    display: block;
    padding: 0.4rem 0.65rem;
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--text);
    text-decoration: none;
}
.zk-nav-menu a[role="menuitem"]:hover, .zk-nav-menu a[role="menuitem"]:focus-visible {
    background: var(--surface-2, #f1f5f9);
    outline: none;
}
.zk-nav-menu a[aria-current="page"] { color: var(--brand); font-weight: 600; }

/* ── 相关工具（toolkit.js 注入到 seo-notes 前）── */
.zk-related { margin-top: 2.6rem; }
.zk-related h2 { margin: 0 0 0.75rem; font-size: 0.95rem; color: var(--text); }
.zk-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
    gap: 0.6rem;
}
.zk-related-grid a {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.7rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.zk-related-grid a:hover, .zk-related-grid a:focus-visible {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    outline: none;
}
.zk-related-icon {
    flex: none;
    display: grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, var(--c1, #2563eb), var(--c2, #0ea5e9));
}
.zk-related-icon svg { width: 1.05rem; height: 1.05rem; }
.zk-related-grid b { display: block; font-size: 0.85rem; color: var(--text); font-weight: 600; line-height: 1.35; }
.zk-related-grid small {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 0.74rem;
    color: var(--text-3);
    line-height: 1.5;
    margin-top: 0.15rem;
}
/* 全屏应用型页面 .zk-related 与 body 直挂的 seo-notes 同套对齐 */
body > .zk-related {
    width: 100%;
    max-width: var(--wrap-w, min(1320px, 100%));
    margin-left: auto;
    margin-right: auto;
    padding-left: calc(var(--wrap-px, clamp(1rem, 3vw, 1.75rem)) + env(safe-area-inset-left) + 0.2rem);
    padding-right: calc(var(--wrap-px, clamp(1rem, 3vw, 1.75rem)) + env(safe-area-inset-right) + 0.2rem);
}

h1 {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 0.4rem;
    font-size: clamp(1.45rem, 4vw, 2.1rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 .title { color: var(--brand); }
.lead { max-width: 62em; margin-bottom: 1.2rem; color: var(--text-2); font-size: 0.95rem; }

/* ── 页底 SEO 说明区：所有工具页共用，与 .wrap 左右边缘对齐 ── */
.seo-notes {
    margin: 2.6rem 0 0;
    padding: 1.8rem 0.2rem 0;
    border-top: 1px solid var(--border);
    font-size: 0.88rem;
    line-height: 1.75;
}

/* 全屏应用型页面把 .seo-notes 挂在 body 下（不入 .wrap，避免挤压编辑区）；
   此时用变量镜像该页 .wrap 的宽度与水平内边距，保证与上方内容对齐。
   页面在自己的 <style> 里按需覆盖 --wrap-w / --wrap-px。 */
body > .seo-notes {
    width: 100%;
    max-width: var(--wrap-w, min(1320px, 100%));
    margin-left: auto;
    margin-right: auto;
    padding-left: calc(var(--wrap-px, clamp(1rem, 3vw, 1.75rem)) + env(safe-area-inset-left) + 0.2rem);
    padding-right: calc(var(--wrap-px, clamp(1rem, 3vw, 1.75rem)) + env(safe-area-inset-right) + 0.2rem);
    padding-bottom: max(2.5rem, env(safe-area-inset-bottom));
}

.seo-notes h2 { margin: 0 0 0.5rem; color: var(--text); font-size: 0.95rem; }
.seo-notes p { max-width: 68em; margin: 0 0 1.2rem; color: var(--text-2); }

.seo-notes details {
    margin-bottom: 0.5rem;
    padding: 0.15rem 0.9rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
}

.seo-notes summary { padding: 0.5rem 0; color: var(--text); font-size: 0.86rem; font-weight: 600; cursor: pointer; }
.seo-notes details p { margin: 0.2rem 0 0.8rem; }

@media (max-width: 860px) {
    .wrap { padding-top: max(1rem, env(safe-area-inset-top)); }
    .top { align-items: flex-start; }
    .meta { width: 100%; }
    h1 { align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
}