/* ===========================================================
   ติวสอบตัวแทนประกันชีวิต — Global Stylesheet
   โทน: มืออาชีพ น่าเชื่อถือ (navy + gold)
   =========================================================== */

:root {
  --navy: #0f2748;
  --navy-2: #16345e;
  --navy-soft: #1d4373;
  --gold: #c9a227;
  --gold-soft: #e3c75e;
  --ink: #1a2330;
  --muted: #5d6b7e;
  --line: #e2e7ef;
  --bg: #f5f7fb;
  --white: #ffffff;
  --green: #1f9d6b;
  --green-bg: #e7f6ef;
  --red: #d2463b;
  --red-bg: #fcebe9;
  --amber: #c9871a;
  --radius: 14px;
  --shadow-sm: 0 1px 3px rgba(15,39,72,.08);
  --shadow: 0 8px 28px rgba(15,39,72,.10);
  --shadow-lg: 0 18px 50px rgba(15,39,72,.16);
  --maxw: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Sarabun", "Noto Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: "Sarabun", sans-serif; color: var(--navy); line-height: 1.3; margin: 0 0 .5em; }
h1 { font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1rem; color: var(--ink); }
a { color: var(--navy-soft); text-decoration: none; }
a:hover { color: var(--gold); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { padding: 72px 0; }
.section-sm { padding: 44px 0; }
.center { text-align: center; }
.muted { color: var(--muted); }
.gold { color: var(--gold); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: 13px 26px; border-radius: 999px; font-weight: 700;
  font-size: 1rem; cursor: pointer; border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  font-family: inherit; text-align: center; justify-content: center;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--gold); color: var(--navy); }
.btn-primary:hover { background: var(--gold-soft); color: var(--navy); box-shadow: 0 10px 24px rgba(201,162,39,.35); }
.btn-navy { background: var(--navy); color: #fff; }
.btn-navy:hover { background: var(--navy-2); color: #fff; box-shadow: 0 10px 24px rgba(15,39,72,.3); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-lg { padding: 16px 34px; font-size: 1.08rem; }
.btn-block { width: 100%; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: flex; align-items: center; gap: .65rem; font-weight: 800; color: var(--navy); font-size: 1.15rem; }
.brand .logo {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--navy), var(--navy-soft));
  display: grid; place-items: center; color: var(--gold); font-weight: 800; font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
}
.brand .logo svg { display: block; width: 22px; height: 22px; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 15px; border-radius: 9px; color: var(--ink); font-weight: 600; font-size: .98rem;
}
.nav-links a:hover { background: var(--bg); color: var(--navy); }
.nav-links a.active { color: var(--navy); background: #eef2f8; }
.nav-cta { margin-left: 8px; }
/* ปุ่มในเมนูต้องคงสีตัวอักษรของปุ่มไว้ (กันสี .nav-links a มาทับจนมองไม่เห็น) */
.nav-links a.btn-primary { color: var(--navy); }
.nav-links a.btn-primary:hover { color: var(--navy); background: var(--gold-soft); }
.nav-links a.btn-navy { color: #fff; }
.nav-links a.btn-navy:hover { color: #fff; }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.6rem; color: var(--navy); cursor: pointer; }

/* ---------- Dropdown เมนูคลังข้อสอบ (4 ประเภท) ---------- */
.nav-drop { position: relative; }
.nav-drop-menu {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 252px;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: 0 14px 34px rgba(15,39,72,.16);
  padding: 7px; display: none; z-index: 60;
}
.nav-drop:hover .nav-drop-menu, .nav-drop.open .nav-drop-menu { display: block; }
.nav-drop-menu a { display: flex; align-items: center; gap: 9px; padding: 10px 12px; border-radius: 9px; white-space: nowrap; font-weight: 600; }
.nav-drop-menu a.head { font-weight: 800; color: var(--navy); }
.nav-drop-menu .nav-sep { height: 1px; background: var(--line); margin: 5px 6px; }
.ndot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; flex: none; }
.nav-drop-toggle::after { content: " ▾"; font-size: .8em; opacity: .7; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 70px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 12px 18px; box-shadow: var(--shadow);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .nav-cta { margin: 6px 0 0; }
  /* บนมือถือ: กางรายการ 4 ประเภทออกมาเลย (ไม่ใช่ dropdown ลอย) */
  .nav-drop { width: 100%; }
  .nav-drop-menu {
    position: static; display: block; box-shadow: none; border: 0;
    padding: 2px 0 6px 12px; min-width: 0; border-left: 2px solid var(--line); margin: 2px 0 4px 6px;
  }
  .nav-drop-menu a { padding: 10px 12px; }
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(201,162,39,.18), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 60%, var(--navy-soft) 100%);
  color: #eaf0fa; position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 22px 22px; opacity: .5; pointer-events: none;
}
.hero .container { position: relative; z-index: 1; padding-top: 84px; padding-bottom: 84px; }
.hero h1 { color: #fff; max-width: 24ch; }
.hero p.lead { font-size: 1.18rem; color: #cdd9ee; max-width: 56ch; margin-bottom: 1.8rem; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.pill {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
  padding: 8px 15px; border-radius: 999px; font-size: .92rem; color: #e7eefb;
}
.eyebrow {
  display: inline-block; letter-spacing: .05em; text-transform: uppercase;
  font-size: .95rem; font-weight: 700; color: var(--gold-soft); margin-bottom: 14px;
}
/* Eyebrow ใต้ Hero ให้เด่นขึ้นเป็นพิเศษ (เป็นบรรทัดแรกที่คนเห็น) */
.hero .eyebrow { font-size: 1.02rem; letter-spacing: .04em; color: var(--gold-soft); }

/* ---------- Cards / Grid ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow-sm); transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card .ico {
  width: 50px; height: 50px; border-radius: 12px; display: grid; place-items: center;
  background: #eef2f8; color: var(--navy); font-size: 1.5rem; margin-bottom: 14px;
}
.card h3 { margin-bottom: .4rem; }
.card p { color: var(--muted); margin: 0; }

/* feature stat */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
@media (max-width:620px){ .stats{ grid-template-columns: repeat(2,1fr);} }
.stat { text-align: center; }
.stat .num { font-size: 2.2rem; font-weight: 800; color: var(--navy); }
.stat .lbl { color: var(--muted); font-size: .95rem; }

/* ---------- Exam catalog cards ---------- */
.exam-card { display: flex; flex-direction: column; }
.exam-card .tag {
  align-self: flex-start; font-size: .78rem; font-weight: 700; letter-spacing: .03em;
  padding: 4px 12px; border-radius: 999px; background: #eef2f8; color: var(--navy-soft); margin-bottom: 12px;
}
.exam-card .tag.free { background: var(--green-bg); color: var(--green); }
.exam-meta { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); font-size: .92rem; margin: 10px 0 18px; }
.exam-meta span { display: inline-flex; align-items: center; gap: 6px; }
.price { font-size: 1.6rem; font-weight: 800; color: var(--navy); }
.price small { font-size: .9rem; font-weight: 600; color: var(--muted); }
.exam-card .btn { margin-top: auto; }

/* ---------- Knowledge ---------- */
.article { background:#fff; border:1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.article + .article { margin-top: 22px; }
.article h2 { display:flex; align-items:center; gap:.6rem; }
.article ul { padding-left: 1.2rem; }
.article li { margin-bottom: .4rem; }
.toc { position: sticky; top: 90px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; }
.toc a { display:block; padding:7px 12px; border-radius:8px; color:var(--ink); font-size:.95rem; }
.toc a:hover { background:#eef2f8; color:var(--navy); }
.layout-2col { display:grid; grid-template-columns: 240px 1fr; gap: 32px; align-items: start; }
@media (max-width: 860px){ .layout-2col{ grid-template-columns: 1fr; } .toc{ position:static; } }

/* ---------- Modal (payment gate) ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(10,20,38,.6);
  display: none; align-items: center; justify-content: center; z-index: 100; padding: 20px;
  backdrop-filter: blur(2px);
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff; border-radius: 18px; max-width: 460px; width: 100%;
  box-shadow: var(--shadow-lg); overflow: hidden; animation: pop .2s ease;
}
@keyframes pop { from { transform: scale(.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-head { background: var(--navy); color:#fff; padding: 18px 24px; display:flex; justify-content:space-between; align-items:center; }
.modal-head h3 { color:#fff; margin:0; }
.modal-close { background:none; border:0; color:#fff; font-size:1.6rem; cursor:pointer; line-height:1; }
.modal-body { padding: 24px; }
.qr-box { text-align:center; padding: 16px; border:1px dashed var(--line); border-radius:12px; background:var(--bg); margin-bottom:18px; }
.qr-box img { width: 200px; height:200px; object-fit:contain; }
.field { margin-bottom: 14px; }
.field label { display:block; font-weight:700; margin-bottom:6px; color:var(--navy); font-size:.95rem; }
.field input {
  width:100%; padding: 12px 14px; border:1.5px solid var(--line); border-radius:10px;
  font-size:1rem; font-family:inherit; letter-spacing: .08em;
}
.field input:focus { outline:none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,162,39,.18); }
.note { font-size:.86rem; color:var(--muted); }
.alert { padding:10px 14px; border-radius:10px; font-size:.92rem; margin-bottom:14px; display:none; }
.alert.show { display:block; }
.alert-err { background: var(--red-bg); color: var(--red); }
.alert-ok { background: var(--green-bg); color: var(--green); }

/* ---------- Exam engine ---------- */
.exam-shell { max-width: 820px; margin: 0 auto; }
.exam-bar {
  position: sticky; top: 70px; z-index: 20; background:#fff; border:1px solid var(--line);
  border-radius: 12px; padding: 12px 18px; display:flex; justify-content:space-between;
  align-items:center; box-shadow: var(--shadow-sm); margin-bottom: 22px; flex-wrap: wrap; gap:10px;
}
.timer { font-weight:800; font-size:1.2rem; color:var(--navy); display:flex; align-items:center; gap:8px; }
.timer.warn { color: var(--red); }
.progress-wrap { flex:1; min-width: 160px; height:8px; background:#eef2f8; border-radius:999px; overflow:hidden; }
.progress-bar { height:100%; background: linear-gradient(90deg,var(--gold),var(--gold-soft)); width:0; transition: width .3s; }
.q-card { background:#fff; border:1px solid var(--line); border-radius:14px; padding: 26px; box-shadow: var(--shadow-sm); }
.q-num { color: var(--gold); font-weight:800; font-size:.9rem; letter-spacing:.05em; }
.q-text { font-size:1.18rem; font-weight:700; color:var(--navy); margin:6px 0 18px; }
.choices { display:grid; gap:12px; }
.choice {
  display:flex; align-items:flex-start; gap:12px; padding:14px 16px; border:1.5px solid var(--line);
  border-radius:12px; cursor:pointer; transition: all .12s; background:#fff;
}
.choice:hover { border-color: var(--navy-soft); background:#f9fbff; }
.choice.selected { border-color: var(--navy); background:#eef3fb; }
.choice .key {
  flex:none; width:28px; height:28px; border-radius:50%; border:1.5px solid var(--line);
  display:grid; place-items:center; font-weight:700; font-size:.9rem; color:var(--navy); background:#fff;
}
.choice.selected .key { background: var(--navy); color:#fff; border-color:var(--navy); }
.choice.correct { border-color: var(--green); background: var(--green-bg); }
.choice.correct .key { background: var(--green); color:#fff; border-color:var(--green); }
.choice.wrong { border-color: var(--red); background: var(--red-bg); }
.choice.wrong .key { background: var(--red); color:#fff; border-color:var(--red); }
.explain {
  margin-top:16px; padding:14px 16px; border-radius:10px; background:#fbf8ec;
  border:1px solid #efe4bd; font-size:.96rem; display:none;
}
.explain.show { display:block; }
.explain b { color: var(--amber); }
.exam-nav { display:flex; justify-content:space-between; gap:12px; margin-top:22px; }

/* result */
.result-hero { text-align:center; padding: 30px; }
.score-ring {
  width: 170px; height:170px; border-radius:50%; margin: 0 auto 18px;
  display:grid; place-items:center; background: conic-gradient(var(--gold) var(--pct,0deg), #eef2f8 0);
}
.score-ring .inner {
  width:138px;height:138px;border-radius:50%;background:#fff;display:grid;place-items:center;flex-direction:column;
  box-shadow: inset 0 0 0 1px var(--line);
}
.score-ring .pct { font-size:2.4rem; font-weight:800; color:var(--navy); line-height:1; }
.badge-pass { display:inline-block; padding:8px 20px;border-radius:999px;font-weight:800; }
.badge-pass.pass { background:var(--green-bg); color:var(--green); }
.badge-pass.fail { background:var(--red-bg); color:var(--red); }
.review-item { border-left:4px solid var(--line); padding:6px 0 6px 14px; margin-bottom:12px; }
.review-item.ok { border-color: var(--green); }
.review-item.no { border-color: var(--red); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color:#c7d3e8; padding: 56px 0 26px; margin-top: 40px; }
.site-footer h4 { color:#fff; font-size:1rem; margin-bottom:12px; }
.site-footer a { color:#c7d3e8; }
.site-footer a:hover { color: var(--gold-soft); }
.footer-grid { display:grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 32px; }
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr; gap:24px; } }
.footer-bottom { border-top:1px solid rgba(255,255,255,.12); margin-top:34px; padding-top:18px; font-size:.88rem; color:#8fa3c4; display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px; }
.foot-list { list-style:none; padding:0; margin:0; }
.foot-list li { margin-bottom:8px; }

/* utility */
.disclaimer { background:#fff7e6; border:1px solid #f3e0b0; border-radius:12px; padding:16px 18px; font-size:.92rem; color:#7a5e12; }
.center-narrow { max-width: 720px; margin:0 auto; }
.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mb-0{margin-bottom:0}
.hidden{display:none!important}