/* Kerno Help Center — self-contained stylesheet (nothing shared with the main site). */

:root {
    --ink: #16323a;
    --ink-soft: #4a6169;
    --teal: #0e7c74;
    --teal-dark: #0a5f59;
    --orange: #f4693b;
    --bg: #f5f9f8;
    --card: #ffffff;
    --line: #dde8e6;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* header */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 24px; padding: 14px 20px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand img { height: 30px; width: auto; display: block; }
.brand span { border-left: 1px solid var(--line); padding-left: 10px; color: var(--ink-soft); font-weight: 500; }
.header-nav { margin-left: auto; }
.header-nav a { color: var(--ink-soft); font-size: 14px; }
.header-search { flex: 1; max-width: 380px; }
.header-search input { width: 100%; }

/* hero */
.hero { background: linear-gradient(135deg, var(--teal-dark), var(--teal)); color: #fff; padding: 56px 0 64px; text-align: center; }
.hero h1 { margin: 0 0 8px; font-size: 34px; }
.hero p { margin: 0 0 28px; opacity: 0.9; }
.hero-search { max-width: 560px; margin: 0 auto; position: relative; }
.hero-search input { width: 100%; padding: 15px 18px; font-size: 16px; border: none; border-radius: var(--radius); }

input[type="search"], input[type="text"], input[type="password"], select, textarea {
    padding: 10px 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--teal); outline-offset: -1px; }

/* search suggestions */
.suggest-box {
    position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 20;
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(22, 50, 58, 0.12); overflow: hidden; text-align: left;
}
.suggest-box a { display: block; padding: 10px 14px; border-bottom: 1px solid var(--line); color: var(--ink); }
.suggest-box a:last-child { border-bottom: none; }
.suggest-box a:hover { background: var(--bg); text-decoration: none; }
.suggest-box .s-title { display: block; font-weight: 600; font-size: 14px; }
.suggest-box .s-cat { display: block; font-size: 12px; color: var(--ink-soft); }

/* sections */
.section { padding: 40px 0; }
.section h2 { font-size: 22px; margin: 0 0 18px; }

/* category grid */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.cat-card {
    display: block; background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 22px; color: var(--ink);
    transition: box-shadow 0.15s, transform 0.15s;
}
.cat-card:hover { text-decoration: none; box-shadow: 0 6px 18px rgba(22, 50, 58, 0.1); transform: translateY(-2px); }
.cat-card h3 { margin: 0 0 6px; font-size: 17px; color: var(--teal-dark); }
.cat-card p { margin: 0 0 10px; font-size: 14px; color: var(--ink-soft); }
.cat-card .count { font-size: 13px; color: var(--orange); font-weight: 600; }

/* article lists */
.article-list { list-style: none; margin: 0; padding: 0; }
.article-list li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 10px; }
.article-list a { display: block; padding: 14px 18px; color: var(--ink); font-weight: 500; }
.article-list a:hover { text-decoration: none; background: var(--bg); }
.article-list .meta { font-size: 13px; color: var(--ink-soft); font-weight: 400; }

/* breadcrumbs */
.crumbs { font-size: 14px; color: var(--ink-soft); margin: 24px 0 8px; }
.crumbs a { color: var(--ink-soft); }

/* article page */
.article-body { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 32px; }
.article-body h2 { font-size: 20px; margin-top: 28px; }
.article-body h3 { font-size: 17px; }
.article-body pre { background: #0f2a30; color: #d7ece9; padding: 14px 16px; border-radius: 8px; overflow-x: auto; }
.article-body .video-embed { position: relative; width: 100%; aspect-ratio: 16 / 9; margin: 18px 0; border-radius: 8px; overflow: hidden; background: #0f2a30; }
.article-body .video-embed iframe { width: 100%; height: 100%; border: 0; display: block; }
.article-body code { background: rgba(14, 124, 116, 0.1); border-radius: 4px; padding: 1px 5px; font-size: 0.92em; }
.article-body pre code { background: none; padding: 0; }
.article-title { margin: 4px 0 4px; font-size: 28px; }
.article-meta { color: var(--ink-soft); font-size: 14px; margin-bottom: 18px; }

/* search results */
.result { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 12px; }
.result h3 { margin: 0 0 4px; font-size: 17px; }
.result .meta { font-size: 13px; color: var(--ink-soft); margin-bottom: 6px; }
.result p { margin: 0; font-size: 14px; color: var(--ink-soft); }
mark { background: rgba(244, 105, 59, 0.25); padding: 0 2px; border-radius: 3px; }

/* footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 20px 0; font-size: 14px; color: var(--ink-soft); }
.site-footer a { color: var(--ink-soft); }

/* buttons */
.btn {
    display: inline-block; background: var(--teal); color: #fff; border: none;
    padding: 10px 18px; font-size: 15px; font-family: inherit; border-radius: var(--radius);
    cursor: pointer; font-weight: 600;
}
.btn:hover { background: var(--teal-dark); text-decoration: none; color: #fff; }
.btn.secondary { background: transparent; color: var(--teal); border: 1px solid var(--teal); }
.btn.danger { background: transparent; color: #b3402a; border: 1px solid #d8a89e; padding: 6px 12px; font-size: 13px; }
.btn.danger:hover { background: #fbeeea; }

/* ---------- admin ---------- */

.admin-wrap { display: flex; min-height: calc(100vh - 61px); }
.admin-nav {
    width: 210px; flex-shrink: 0; background: var(--ink); padding: 24px 0;
}
.admin-nav a { display: block; padding: 10px 22px; color: #bcd2d0; font-size: 15px; }
.admin-nav a:hover { color: #fff; text-decoration: none; }
.admin-nav a.active { color: #fff; background: rgba(255, 255, 255, 0.08); border-left: 3px solid var(--orange); padding-left: 19px; }
.admin-main { flex: 1; padding: 28px 32px; min-width: 0; }
.admin-main h1 { margin-top: 0; font-size: 24px; }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.panel h2 { margin-top: 0; font-size: 18px; }

.flash { background: #e5f5ee; border: 1px solid #b3dfc9; color: #1c6b47; border-radius: var(--radius); padding: 12px 16px; margin-bottom: 18px; }
.flash.error { background: #fbeeea; border-color: #edc4b8; color: #b3402a; }

table.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th, .admin-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.admin-table th { color: var(--ink-soft); font-weight: 600; font-size: 13px; }

.badge { display: inline-block; font-size: 12px; font-weight: 600; border-radius: 20px; padding: 2px 10px; }
.badge.published { background: #e5f5ee; color: #1c6b47; }
.badge.draft { background: #fdf1d7; color: #8a6410; }
.badge.revoked { background: #fbeeea; color: #b3402a; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 5px; }
.form-row input[type="text"], .form-row input[type="password"], .form-row select, .form-row textarea { width: 100%; }
.form-hint { font-size: 13px; color: var(--ink-soft); margin-top: 4px; }
textarea.body-editor { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 14px; line-height: 1.5; }

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; }
.stat .num { font-size: 26px; font-weight: 700; color: var(--teal-dark); }
.stat .label { font-size: 13px; color: var(--ink-soft); }

.token-reveal {
    background: #0f2a30; color: #d7ece9; padding: 14px 16px; border-radius: 8px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 14px;
    word-break: break-all; margin: 10px 0;
}

.login-card { max-width: 400px; margin: 60px auto; }

@media (max-width: 720px) {
    .admin-wrap { flex-direction: column; }
    .admin-nav { width: 100%; display: flex; flex-wrap: wrap; padding: 8px; }
    .admin-nav a { padding: 8px 14px; }
    .admin-nav a.active { border-left: none; padding-left: 14px; }
    .header-search { display: none; }
    .article-body { padding: 20px; }
}