/* Người Hiểu Luật - blog kiến thức pháp luật phổ thông */
:root {
  --paper: #f3f5f2;
  --card: #ffffff;
  --ink: #17201d;
  --muted: #4a5752;
  --seal: #0f5b4e;
  --seal-soft: #e2eeea;
  --line: #c3ccc8;
  --rule: #8e9a95;
  --note-bg: #fff6e0;
  --note-ink: #573a00;
  --note-line: #b8862b;
  --radius: 10px;
  --wrap: 72rem;
  --read: 42rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #121816;
    --card: #19211e;
    --ink: #e6ece9;
    --muted: #a9b6b0;
    --seal: #74c7b5;
    --seal-soft: #1d2f2a;
    --line: #34413c;
    --rule: #5d6b66;
    --note-bg: #2a2210;
    --note-ink: #f2d59a;
    --note-line: #a07a2c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #121816;
  --card: #19211e;
  --ink: #e6ece9;
  --muted: #a9b6b0;
  --seal: #74c7b5;
  --seal-soft: #1d2f2a;
  --line: #34413c;
  --rule: #5d6b66;
  --note-bg: #2a2210;
  --note-ink: #f2d59a;
  --note-line: #a07a2c;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--paper); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
}
a { color: var(--seal); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--seal); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 16px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 10; }

/* Đầu trang */
.site-head { border-bottom: 1px solid var(--line); background: var(--paper); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.125rem; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand span { color: var(--seal); }
.nav { display: flex; gap: 20px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 0.975rem; padding: 6px 0; min-height: 24px; }
.nav a[aria-current="page"] { color: var(--seal); border-bottom: 2px solid var(--seal); }

/* Trang chủ */
.hero { padding: 56px 0 40px; border-bottom: 1px solid var(--line); }
.hero h1 { font-size: clamp(1.9rem, 4.2vw, 2.75rem); line-height: 1.2; margin: 0 0 14px; max-width: 22ch; letter-spacing: -0.02em; }
.hero p { margin: 0 0 24px; max-width: 46ch; color: var(--muted); font-size: 1.125rem; }
.btn { display: inline-block; background: var(--seal); color: var(--paper); font-weight: 600; text-decoration: none; padding: 12px 20px; border-radius: var(--radius); }
.btn:hover { filter: brightness(1.08); }

.home-grid { display: grid; grid-template-columns: 1fr; gap: 48px; padding: 48px 0 64px; }
@media (min-width: 900px) { .home-grid { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 64px; } }
.sec-title { font-size: 1.25rem; margin: 0 0 16px; }

.post-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.post-list li { border-bottom: 1px solid var(--line); padding: 20px 0; }
.post-list .tag { display: inline-block; font-size: 0.8125rem; font-weight: 600; color: var(--seal); background: var(--seal-soft); padding: 2px 10px; border-radius: 999px; }
.post-list h3 { margin: 8px 0 6px; font-size: 1.1875rem; line-height: 1.4; }
.post-list h3 a { color: var(--ink); text-decoration: none; }
.post-list h3 a:hover { color: var(--seal); text-decoration: underline; }
.post-list p { margin: 0; color: var(--muted); font-size: 0.975rem; }
.post-list time { font-size: 0.875rem; color: var(--muted); margin-left: 8px; }

.aside-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 8px; }
.aside-box + .aside-box { margin-top: 24px; }
.aside-box h2 { font-size: 1.0625rem; margin: 0 0 10px; }
.aside-box ul { margin: 0 0 14px; padding-left: 20px; }
.aside-box li { margin-bottom: 6px; }
.aside-box dl { margin: 0 0 14px; }
.aside-box dt { font-weight: 600; }
.aside-box dd { margin: 0 0 12px; color: var(--muted); font-size: 0.975rem; }

/* Bài viết */
.crumbs { font-size: 0.875rem; color: var(--muted); padding: 20px 0 0; }
.crumbs a { color: var(--muted); }
.article { max-width: var(--read); margin: 0 auto; padding: 8px 0 64px; }
.article h1 { font-size: clamp(1.7rem, 3.6vw, 2.25rem); line-height: 1.25; margin: 12px 0 10px; letter-spacing: -0.015em; }
.article .sub { color: var(--muted); font-size: 1.125rem; margin: 0 0 12px; }
.meta { font-size: 0.9rem; color: var(--muted); margin: 0 0 28px; }
.article h2 { font-size: 1.375rem; line-height: 1.35; margin: 40px 0 12px; }
.article h3 { font-size: 1.125rem; margin: 28px 0 8px; }
.article p, .article ul, .article ol { margin: 0 0 16px; }
.article li { margin-bottom: 6px; }

/* Phần tử chữ ký: thẻ hiệu lực văn bản */
.law-card { background: var(--card); border: 1px solid var(--line); border-left: 5px solid var(--seal); border-radius: var(--radius); padding: 18px 20px 6px; margin: 0 0 28px; }
.law-card h2 { font-size: 1rem; margin: 0 0 4px; }
.law-card .asof { font-size: 0.875rem; color: var(--muted); margin: 0 0 12px; }
.law-card table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; margin-bottom: 12px; }
.law-card th, .law-card td { text-align: left; padding: 8px 6px; border-top: 1px solid var(--line); vertical-align: top; }
.law-card th { font-weight: 600; color: var(--muted); font-size: 0.8125rem; }
.status { font-weight: 600; color: var(--seal); }
@media (max-width: 600px) {
  .law-card thead { display: none; }
  .law-card tr { display: block; border-top: 1px solid var(--line); padding: 8px 0; }
  .law-card td { display: block; border: 0; padding: 2px 0; }
  .law-card td:first-child { font-weight: 600; }
}

.key-facts { background: var(--seal-soft); border-radius: var(--radius); padding: 18px 20px 4px; margin: 0 0 24px; }
.key-facts h2 { margin: 0 0 8px; font-size: 1.0625rem; }

.table-scroll { overflow-x: auto; margin: 0 0 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.table-scroll table { border-collapse: collapse; width: 100%; min-width: 520px; font-size: 0.9375rem; }
.table-scroll th, .table-scroll td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.table-scroll th { background: var(--seal-soft); font-weight: 600; }
.table-scroll tr:last-child td { border-bottom: 0; }

.disclaimer { background: var(--note-bg); color: var(--note-ink); border: 1px solid var(--note-line); border-radius: var(--radius); padding: 18px 20px; margin: 36px 0 8px; font-size: 0.975rem; }
.disclaimer strong { display: block; margin-bottom: 6px; font-size: 1rem; }
.disclaimer p { margin: 0 0 8px; }
.disclaimer p:last-child { margin: 0; }

.faq details { border-bottom: 1px solid var(--line); padding: 14px 0; }
.faq summary { cursor: pointer; font-weight: 600; min-height: 24px; }
.faq .faq-a { padding-top: 8px; color: var(--ink); }
.faq .faq-a p { margin: 0; }

.related { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 20px; }
.related h2 { margin-top: 0; font-size: 1.125rem; }
.related ul { padding-left: 20px; }

/* Trang giới thiệu, danh mục */
.page { max-width: var(--read); margin: 0 auto; padding: 32px 0 64px; }
.page h1 { font-size: clamp(1.7rem, 3.6vw, 2.25rem); line-height: 1.25; margin: 0 0 14px; }
.page h2 { font-size: 1.3rem; margin: 36px 0 10px; }

/* Chân trang */
.site-foot { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 0.9375rem; color: var(--muted); }
.site-foot .wrap { display: grid; gap: 12px; }
.site-foot a { color: var(--muted); }
.site-foot p { margin: 0; max-width: 70ch; }

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