/* ================= ฟอนต์ TH Sarabun New ================= */
/* วางไฟล์ฟอนต์ไว้ที่ assets/fonts/  (ดู assets/fonts/README.txt) */
@font-face {
  font-family: 'TH Sarabun New';
  src: url('../fonts/THSarabunNew.ttf') format('truetype');
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: 'TH Sarabun New';
  src: url('../fonts/THSarabunNew-Bold.ttf') format('truetype');
  font-weight: 700; font-style: normal; font-display: swap;
}

/* ================= ฟอนต์โลโก้ Playfair Display ================= */
@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/PlayfairDisplay-Bold.ttf') format('truetype');
  font-weight: 700; font-style: normal; font-display: swap;
}

:root {
  --font: 'TH Sarabun New', 'Sarabun', 'Tahoma', sans-serif;
  --base: 16pt;                 /* ขนาดฟอนต์อ่านง่ายตามที่กำหนด */
  --ink: #1f2933;
  --muted: #6b7280;
  --line: #d9dee5;
  --bg: #f4f6f9;
  --card: #ffffff;
  --primary: #1d4ed8;
  --primary-dark: #1740b0;
  --ok: #067647;
  --ok-bg: #e7f6ec;
  --warn: #b45309;
  --warn-bg: #fdf0dd;
  --danger: #b42318;
}

* { box-sizing: border-box; }
html { font-size: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--base);
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ================= โครงหน้า ================= */
.topbar { background: #0f2a5e; color: #fff; }
.topbar-inner {
  max-width: 1040px; margin: 0 auto; padding: 10px 18px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.brand { color: #fff; font-weight: 700; font-size: 1.15em; }
.brand:hover { text-decoration: none; }
.topnav { margin-left: auto; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.topnav a { color: #dbe4f5; }
.topnav a:hover { color: #fff; }
.topnav .who { color: #9fb4d8; }
.topnav .logout { background: #24408a; padding: 4px 12px; border-radius: 6px; color:#fff; }

.container { max-width: 1040px; margin: 22px auto; padding: 0 18px; }
.sitefoot { max-width: 1040px; margin: 30px auto; padding: 16px 18px; color: var(--muted); border-top: 1px solid var(--line); }

/* ================= การ์ด/กล่อง ================= */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 22px; margin-bottom: 18px;
}
h1 { font-size: 1.7em; margin: 0 0 14px; }
h2 { font-size: 1.35em; margin: 0 0 12px; }
h3 { font-size: 1.15em; margin: 0 0 8px; }
p { margin: 0 0 10px; }
.muted { color: var(--muted); }
.right { text-align: right; }

/* ================= ปุ่ม ================= */
.btn {
  display: inline-block; cursor: pointer;
  font-family: var(--font); font-size: 1em;
  background: var(--primary); color: #fff; border: 0;
  padding: 9px 20px; border-radius: 7px;
}
.btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-ghost { background: #eef2f8; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { background: #e2e8f2; }
.btn-danger { background: var(--danger); }
.btn-lg { font-size: 1.1em; padding: 12px 28px; }

/* ================= ฟอร์ม ================= */
.field { margin-bottom: 16px; }
.field label { display: block; font-weight: 700; margin-bottom: 5px; }
input[type=text], input[type=password], input[type=file], select, textarea {
  width: 100%; font-family: var(--font); font-size: 1em;
  padding: 9px 12px; border: 1px solid var(--line); border-radius: 7px;
  background: #fff; color: var(--ink);
}
textarea { min-height: 140px; resize: vertical; }
.help { color: var(--muted); font-size: 0.92em; margin-top: 4px; }

/* ================= ตาราง ================= */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
th { background: #eef2f8; }
tr:nth-child(even) td { background: #fafbfd; }

/* ================= badge / flash ================= */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.85em; font-weight: 700; }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.badge-wait { background: var(--warn-bg); color: var(--warn); }
.badge-score { background: #e6edfb; color: var(--primary-dark); }

.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; }
.flash-ok { background: var(--ok-bg); color: var(--ok); }
.flash-err { background: #fdeceb; color: var(--danger); }
.flash-info { background: #e6edfb; color: var(--primary-dark); }

/* ================= โลโก้ READ THINK CHECK ================= */
.brand-hero { text-align: center; margin: 44px auto 8px; }
.brand-hero .logo-badge {
  width: 66px; height: 66px; border-radius: 16px;
  background: #2563eb; color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .30);
}
.brand-hero .logo-badge svg { width: 36px; height: 36px; display: block; }
.brand-hero .logo-title {
  font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
  font-weight: 700;
  font-size: 2.8em;
  letter-spacing: .06em;
  line-height: 1.15;
  margin: 18px 0 8px;
}
.brand-hero .logo-title .w-read  { color: #16202b; }
.brand-hero .logo-title .w-think { color: #1d4ed8; }
.brand-hero .logo-title .w-check { color: #f59e0b; }
.brand-hero .logo-sub { color: var(--muted); font-size: 1.05em; margin: 0; }
@media (max-width: 480px) {
  .brand-hero .logo-title { font-size: 2em; letter-spacing: .04em; }
  .brand-hero .logo-sub { font-size: .95em; }
}

/* ================= login ================= */
.login-wrap { max-width: 430px; margin: 20px auto 40px; }
.tabs { display: flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-bottom: 18px; }
.tabs button {
  flex: 1; padding: 10px; border: 0; background: #eef2f8; cursor: pointer;
  font-family: var(--font); font-size: 1em; color: var(--muted);
}
.tabs button.active { background: var(--primary); color: #fff; font-weight: 700; }

/* ================= grid ================= */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 18px; }
.type-card {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; padding: 26px 20px; text-align: center;
}
.type-card:hover { border-color: var(--primary); text-decoration: none; }
.type-card .ico { font-size: 2.6em; display: block; margin-bottom: 8px; }
.type-card .cnt { color: var(--muted); font-size: 0.9em; }

.news-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; }
.news-item {
  display: flex; flex-direction: column; background: var(--card);
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
}
.news-item:hover { border-color: var(--primary); text-decoration: none; }
.news-item .thumb { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: #e6e9ee; }
.news-item .body { padding: 12px 14px; }
.news-item .body .t { font-weight: 700; color: var(--ink); }
.news-item .body .d { color: var(--muted); font-size: 0.9em; margin-top: 4px; }
.done-tag { color: var(--ok); font-weight: 700; font-size: 0.9em; }

/* ================= อ่านเนื้อหา ================= */
.article-body { font-size: 1.05em; line-height: 1.9; white-space: pre-wrap; }
.article-hero { width: 100%; max-height: 420px; object-fit: cover; border-radius: 10px; margin-bottom: 16px; }

/* เกณฑ์ให้คะแนน */
.rubric label { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; cursor: pointer; }
.rubric label:hover { background: #f6f8fc; }
.rubric input { width: auto; margin-top: 5px; }
.rubric .lv { font-weight: 700; white-space: nowrap; }
.rubric .ds { color: var(--muted); font-size: 0.95em; }

.answer-box { background: #f6f8fc; border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }

/* ================= ข้อสอบท้ายเรื่อง ================= */
.q-block { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; margin-bottom: 14px; background: #fff; }
.q-block .q-title { font-weight: 700; margin-bottom: 10px; }
.q-block .q-title .q-no { color: var(--primary-dark); }
.q-choice { display: flex; gap: 10px; align-items: flex-start; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 7px; cursor: pointer; }
.q-choice:hover { background: #f6f8fc; }
.q-choice input { width: auto; margin-top: 5px; flex: none; }
.q-choice.is-correct { border-color: var(--ok); background: var(--ok-bg); }
.q-choice.is-wrong { border-color: var(--danger); background: #fdeceb; }
.q-tag { font-size: .85em; font-weight: 700; margin-left: 6px; }
.q-tag.ok { color: var(--ok); }
.q-tag.no { color: var(--danger); }

.score-summary { display: flex; flex-wrap: wrap; gap: 10px; margin: 4px 0 14px; }
.score-pill { background: #eef2f8; border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-weight: 700; }
.score-pill .n { color: var(--primary-dark); }
.score-total { font-size: 1.25em; font-weight: 700; color: #fff; background: var(--primary); border-radius: 10px; padding: 10px 18px; display: inline-block; }

.btn-chatgpt { background: #10a37f; }
.btn-chatgpt:hover { background: #0d8a6c; }