/* ============================================================
   Chọn trường mầm non phía Nam — design tokens & base styles
   Ngôn ngữ thị giác: biển chỉ dẫn / bảng thông báo KCN / biểu mẫu hành chính
   ============================================================ */

@font-face {
  font-family: "Be Vietnam Pro";
  src: url("../fonts/be-vietnam-pro-vietnamese-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-vietnamese-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-vietnamese-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Bảng màu */
  --paper: #edefec;       /* Giấy Bạc — nền chính */
  --ink: #1a1d1b;         /* Than Chữ — chữ chính */
  --blue: #144b8c;        /* Xanh Chỉ Dẫn — accent, link, tab */
  --yellow: #f0ac00;      /* Vàng An Toàn — số liệu cần chú ý */
  --red: #a93226;         /* Đỏ Dấu Mộc — cảnh báo / thiếu */
  --line: #c7cbc4;        /* Xám Viền — đường kẻ mảnh */

  --paper-raised: #f5f6f3;
  --blue-tint: #e5edf6;
  --red-tint: #f5e6e3;

  --font-label: "Be Vietnam Pro", "Arial Narrow", Arial, sans-serif;
  --font-body: "Inter", -apple-system, "Segoe UI", Arial, sans-serif;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;

  --max-width: 1200px;
  --radius: 3px; /* bo góc tối thiểu — không rounded-card lớn */
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
}

@media (prefers-reduced-motion: no-preference) {
  a,
  summary {
    transition: background-color 0.12s ease, color 0.12s ease;
  }
}

a {
  color: var(--blue);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  display: block;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 2px solid var(--ink);
  background: var(--paper);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  gap: var(--space-4);
}

.site-name {
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: var(--space-4);
  font-size: 0.9rem;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: var(--blue);
}

/* ---------- Câu trả lời thẳng (above the fold) ---------- */

.answer-block {
  padding: var(--space-5) 0 var(--space-4);
}

.answer-block p,
.answer-block h1 {
  font-size: 1.4rem;
  line-height: 1.4;
  font-weight: 600;
  max-width: 42ch;
  margin: 0;
}

.answer-block p + p,
.answer-block h1 + p {
  margin-top: var(--space-3);
  font-size: 1.15rem;
  font-weight: 400;
}

/* ---------- Dải tra nhanh (tab wayfinding, không phải pill) ---------- */

.quicknav {
  display: flex;
  border: 2px solid var(--ink);
  margin: var(--space-4) 0 var(--space-6);
  overflow: hidden;
}

.quicknav a {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-2) var(--space-3);
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 0.85rem;
  text-align: center;
  background: var(--paper-raised);
  border-right: 2px solid var(--ink);
}

.quicknav a:last-child {
  border-right: none;
}

.quicknav a:hover,
.quicknav a:focus-visible {
  background: var(--blue);
  color: var(--paper);
}

/* ---------- Badge biển số xe ---------- */

.plate {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--paper);
  background: var(--blue);
  border-radius: var(--radius);
  padding: 2px 7px;
  white-space: nowrap;
}

.plate--dn { background: var(--blue); }
.plate--bd { background: var(--ink); }
.plate--sg { background: var(--red); }

/* ---------- Bảng so sánh (desktop) ---------- */

.compare-table-wrap {
  margin: var(--space-6) 0;
}

.section-title {
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--ink);
}

table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.compare caption {
  text-align: left;
  margin-bottom: var(--space-2);
}

table.compare th,
table.compare td {
  text-align: left;
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

table.compare thead th {
  font-family: var(--font-label);
  font-weight: 700;
  background: var(--ink);
  color: var(--paper);
  border-bottom: none;
}

table.compare tbody tr:nth-child(even) {
  background: var(--paper-raised);
}

table.compare td.highlight {
  color: var(--yellow);
  background: var(--ink);
  font-weight: 600;
}

table.compare td.warn {
  color: var(--red);
  font-weight: 600;
}

/* ---------- Bảng so sánh (mobile card, kiểu biểu mẫu) ---------- */

.compare-cards {
  display: none;
}

.compare-card {
  border: 2px solid var(--ink);
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  background: var(--paper-raised);
  position: relative;
}

.compare-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-label);
  font-weight: 700;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--line);
}

.compare-card__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--line);
}

.compare-card__row:last-child {
  border-bottom: none;
}

.compare-card__label {
  color: var(--ink);
  opacity: 0.75;
}

.compare-card__value {
  font-weight: 600;
  text-align: right;
}

.compare-card__value.highlight { color: var(--blue); }
.compare-card__value.warn { color: var(--red); }

@media (max-width: 720px) {
  .compare-table-wrap table.compare {
    display: none;
  }
  .compare-cards {
    display: block;
  }
}

/* ---------- Section tỉnh ---------- */

.provinces {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin: var(--space-6) 0;
}

@media (min-width: 900px) {
  .provinces {
    grid-template-columns: repeat(3, 1fr);
  }
}

.province-card {
  border-top: 4px solid var(--ink);
  padding-top: var(--space-3);
}

.province-card h3 {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-label);
  font-size: 1rem;
  margin: 0 0 var(--space-2);
}

.province-card p {
  margin: 0 0 var(--space-2);
  font-size: 0.95rem;
}

.province-card .issue {
  border-left: 3px solid var(--red);
  padding-left: var(--space-3);
  margin: var(--space-3) 0;
  font-size: 0.9rem;
}

.province-card a.more {
  display: inline-block;
  margin-top: var(--space-2);
  font-weight: 600;
  text-decoration: none;
}

.province-card a.more::before {
  content: "\2192\0020";
}

/* ---------- FAQ (tờ thông báo) ---------- */

.faq {
  margin: var(--space-6) 0;
  border-top: 3px double var(--ink);
  border-bottom: 3px double var(--ink);
  padding: var(--space-4) 0;
}

@media (min-width: 800px) {
  .faq-list {
    columns: 2;
    column-gap: var(--space-6);
  }
  .faq-list details {
    break-inside: avoid;
  }
}

.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: var(--space-3) 0;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  gap: var(--space-3);
  align-items: baseline;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::before {
  content: "+";
  font-family: var(--font-label);
  font-weight: 700;
  border: 1.5px solid var(--ink);
  width: 18px;
  height: 18px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  line-height: 1;
}

.faq-list details[open] summary::before {
  content: "\2212";
  background: var(--ink);
  color: var(--paper);
}

.faq-list p {
  margin: var(--space-2) 0 0;
  font-size: 0.9rem;
}

/* ---------- Blog ---------- */

.post-lead {
  font-size: 1.15rem;
  font-weight: 600;
  max-width: 65ch;
}

.post-meta {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  font-size: 0.85rem;
  opacity: 0.75;
  margin: var(--space-2) 0 var(--space-5);
}

.post-body {
  max-width: 68ch;
  font-size: 1rem;
}

.post-body h2 {
  font-family: var(--font-label);
  font-size: 1.2rem;
  margin-top: var(--space-6);
}

.post-body h3 {
  font-family: var(--font-label);
  font-size: 1.05rem;
}

.post-body ul,
.post-body ol {
  padding-left: 1.2rem;
}

.post-list {
  list-style: none;
  margin: var(--space-5) 0;
  padding: 0;
}

.post-list li {
  border-bottom: 1px solid var(--line);
  padding: var(--space-4) 0;
  display: flex;
  gap: var(--space-3);
  align-items: baseline;
  flex-wrap: wrap;
}

.post-list a {
  font-weight: 600;
  text-decoration: none;
  font-size: 1.05rem;
}

.post-list time {
  font-size: 0.8rem;
  opacity: 0.7;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 2px solid var(--ink);
  margin-top: var(--space-7);
  padding: var(--space-5) 0;
  font-size: 0.8rem;
  opacity: 0.8;
}

/* ---------- Utility ---------- */

.section {
  padding: var(--space-5) 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}