/* ============================================================
   KierAccount — Landing page
   Identity: logo-matched — deep indigo navy + royal blue + bright
   yellow-gold star. Bold, trustworthy, modern Thai accounting.
   ============================================================ */

/* ════════════════════════════════════════════════════════════════
   Kiera design system — ค่าทั้งหมดยึดตาม "Kiera HR Design System"
   (เอาเฉพาะกฎการออกแบบ ไม่ได้เอาคอมโพเนนต์/โค้ดของเขามา)
   ชื่อตัวแปรคงของเดิมไว้ทั้งหมด เพื่อไม่ให้หน้าเดิมพัง — เปลี่ยนเฉพาะ "ค่า"
   ก่อนหน้านี้ระบบมี navy 2 เฉด (#1E3A8A/#141452) และ gold 3 เฉด ปนกัน
   ════════════════════════════════════════════════════════════════ */
:root {
  --ink:        #141452;   /* Deep Navy — พื้นเข้มสุดของแบรนด์ (เดิม #070E2E) */
  --navy:       #141452;   /* Deep Navy — หัวข้อ/ตัวอักษร/การ์ดเข้ม */
  --navy-soft:  #2D35C0;   /* Bright Blue — primary: ปุ่ม/ลิงก์/โฟกัส */
  --navy-700:   #242BA0;   /* primary hover/active */
  --gold:       #F5B40C;   /* Gold spark — ใช้อย่างประหยัด */
  --gold-deep:  #D89A00;   /* gold pressed */
  --gold-glow:  rgba(245,180,12,.32);

  --paper:      #F5F6FC;   /* app background — ขาวอมฟ้าจาง */
  --paper-line: #E4E6F1;
  --surface:    #FFFFFF;   /* การ์ด/แผง */
  --surface-2:  #FBFBFE;   /* พื้นซ้อน/แถบสลับ */
  --line:       #E4E6F1;   /* hairline */
  --line-strong:#D2D5E6;

  --text:       #141452;   /* primary = Deep Navy */
  --text-soft:  #5B5F7A;
  --text-mut:   #9094AC;
  --on-dark:    #FFFFFF;
  --on-dark-mut:rgba(255,255,255,.72);

  --positive:   #16A34A;
  --warning:    #F59E0B;
  --danger:     #EF4444;
  --info:       #3B82F6;
  --positive-bg:#E7F6EC;
  --warning-bg: #FEF3DC;
  --danger-bg:  #FDE8E8;
  --info-bg:    #E7F0FD;
  --gold-bg:    #FDF2D4;
  --blue-bg:    #E9EAFB;

  /* เงา: ใช้เฉพาะการ์ดและ dropdown เท่านั้น — ห้ามใส่บน UI chrome แบน ๆ */
  --shadow-card: 0 1px 2px rgba(20,20,82,.04), 0 6px 18px rgba(20,20,82,.06);
  --shadow-pop:  0 8px 28px rgba(20,20,82,.14);
  --shadow-doc:  0 10px 30px rgba(20,20,82,.28);

  /* รูปทรง: การ์ด 14 / คอนโทรล 10 — just-rounded ไม่กลมจนเป็นฟองสบู่ */
  --radius-card:    14px;
  --radius-control: 10px;
  --radius-sm:      8px;
  --radius-pill:    999px;

  /* Motion: 160ms เท่านั้น ห้ามเด้ง ห้ามลูป */
  --ease: cubic-bezier(.4,0,.2,1);
  --dur:  160ms;
  --focus-ring: rgba(45,53,192,.35);

  /* Poppins นำหน้า → ละตินเป็น Poppins, ไทยตกไป IBM Plex Sans Thai อัตโนมัติ
     ตัวเลข (เงิน/วันที่/รหัส) ใช้ Poppins ทั้งหมด */
  --display: 'Poppins', 'IBM Plex Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --body:    'IBM Plex Sans Thai', 'Poppins', system-ui, sans-serif;
  --num:     'Poppins', system-ui, sans-serif;

  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--body);
  color: var(--text);
  background: var(--surface);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, .display { font-family: var(--display); line-height: 1.25; letter-spacing: -.01em; margin: 0; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
.num { font-family: var(--num); font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }
/* keep Thai compound phrases from breaking mid-word on wide screens */
.nb { white-space: nowrap; }
@media (max-width: 560px) { .nb { white-space: normal; } }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  font-family: var(--num); font-size: 12px; font-weight: 600;
  letter-spacing: .18em; text-transform: uppercase; color: var(--gold-deep);
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--gold-deep); opacity: .7; }
.eyebrow.on-dark { color: var(--gold); }
.eyebrow.on-dark::before { background: var(--gold); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--display); font-weight: 500; font-size: 15px;
  padding: 13px 24px; border-radius: 11px; border: 1px solid transparent;
  cursor: pointer; transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
}
.btn-gold { background: var(--gold); color: #1C1200; box-shadow: 0 6px 18px -6px var(--gold-glow); font-weight: 600; }
.btn-gold:hover { background: #FCD34D; transform: translateY(-2px); box-shadow: 0 12px 26px -8px var(--gold-glow); }
.btn-gold:active { transform: translateY(0); }
.btn-ghost { background: transparent; color: var(--navy); border-color: rgba(30,58,138,.35); }
.btn-ghost:hover { border-color: var(--navy); color: var(--navy); background: rgba(30,58,138,.06); }
.btn-line { background: var(--surface); color: var(--navy); border-color: var(--line); box-shadow: var(--shadow-card); }
.btn-line:hover { border-color: var(--gold); color: var(--gold-deep); transform: translateY(-2px); }
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px var(--gold-glow); }

/* ---------- header ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: #fff; transition: background .3s ease, box-shadow .3s ease, border-color .3s;
  border-bottom: 1px solid rgba(30,58,138,.10);
  box-shadow: 0 1px 4px rgba(30,58,138,.06);
}
.nav.scrolled {
  background: #fff;
  border-bottom: 1px solid rgba(30,58,138,.12);
  box-shadow: 0 2px 12px rgba(30,58,138,.10);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; }
.brand img { height: 32px; width: 187px; object-fit: contain; object-position: left center; }
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a.link { color: var(--text-soft); font-size: 15px; transition: color .18s; }
.nav-links a.link:hover { color: var(--navy); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; background: var(--ink); color: var(--on-dark); overflow: hidden; }
/* signature: faint ledger column-grid */
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(244,246,251,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,246,251,.045) 1px, transparent 1px);
  background-size: 100% 38px, 84px 100%;
  mask-image: radial-gradient(120% 90% at 70% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero::after { /* star-gold horizon glow */
  content: ""; position: absolute; right: -10%; top: -20%; width: 60%; height: 80%;
  background: radial-gradient(closest-side, rgba(251,191,36,.13), transparent 70%);
  pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center;
  padding: 76px 24px 96px;
}
.hero h1 { font-size: clamp(33px, 4.6vw, 58px); font-weight: 600; color: #fff; }
.hero h1 .accent { color: var(--gold); }
.hero .lede { color: var(--on-dark-mut); font-size: clamp(16px, 1.4vw, 19px); max-width: 34em; margin: 22px 0 0; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

/* hero trust strip — tabular figures */
.stats { display: flex; gap: 38px; margin-top: 46px; flex-wrap: wrap; }
.stat .figure { font-family: var(--num); font-weight: 700; font-size: 30px; color: #fff; letter-spacing: -.02em; line-height: 1; }
.stat .figure .unit { color: var(--gold); font-size: 18px; margin-left: 2px; }
.stat .cap { color: var(--on-dark-mut); font-size: 13.5px; margin-top: 8px; }
.stat + .stat { border-left: 1px solid rgba(244,246,251,.12); padding-left: 38px; }

/* ---------- signature: document stack ---------- */
.doc-stage { position: relative; min-height: 460px; }
.doc {
  position: absolute; background: var(--surface); color: var(--text);
  border-radius: 14px; box-shadow: var(--shadow-doc);
  border: 1px solid rgba(17,32,59,.06);
}
.doc-back {
  inset: 38px 8px auto auto; width: 270px; height: 340px; right: 0; top: 36px;
  transform: rotate(4.5deg); opacity: .92;
  background:
    repeating-linear-gradient(var(--paper) 0 27px, var(--paper-line) 27px 28px);
}
.doc-front {
  width: 320px; left: 0; top: 0; padding: 22px 22px 20px;
}
.doc-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.doc-head .t { font-family: var(--display); font-weight: 600; font-size: 15px; color: var(--navy); }
.doc-head .badge { font-family: var(--num); font-size: 10.5px; font-weight: 600; letter-spacing: .08em; color: var(--navy); background: rgba(30,58,138,.09); border: 1px solid rgba(30,58,138,.25); padding: 3px 8px; border-radius: 999px; }
.doc-row { display: flex; align-items: center; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 13.5px; }
.doc-row .lbl { color: var(--text-soft); }
.doc-row .val { font-family: var(--num); font-variant-numeric: tabular-nums; font-weight: 600; color: var(--text); }
.doc-row.total { border-bottom: none; margin-top: 4px; padding-top: 14px; }
.doc-row.total .lbl { font-family: var(--display); font-weight: 600; color: var(--navy); }
.doc-row.total .val { font-size: 20px; color: var(--navy); }
.doc-row.total .val.pos { color: var(--positive); }
.doc-seal {
  position: absolute; right: -16px; bottom: -16px; width: 78px; height: 78px;
  border-radius: 50%; background: var(--navy); color: var(--gold);
  display: grid; place-items: center; text-align: center; line-height: 1.1;
  font-family: var(--display); font-weight: 600; font-size: 11px;
  box-shadow: 0 10px 22px -8px rgba(17,32,59,.5); border: 2px solid var(--gold);
}
.doc-stamp { display: flex; align-items: center; gap: 7px; margin-top: 14px; color: var(--positive); font-size: 12.5px; font-weight: 600; }
.doc-stamp svg { width: 16px; height: 16px; }

/* ---------- logos / trust bar ---------- */
.trustbar { background: var(--surface); border-bottom: 1px solid var(--line); }
.trustbar .wrap { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; padding-top: 22px; padding-bottom: 22px; }
.trustbar .t { font-size: 13px; color: var(--text-mut); white-space: nowrap; }
.trustbar .forms { display: flex; gap: 10px; flex-wrap: wrap; }
.form-chip { font-family: var(--num); font-size: 12.5px; font-weight: 600; color: var(--navy); background: var(--paper); border: 1px solid var(--paper-line); border-radius: 8px; padding: 6px 12px; transition: border-color .15s, color .15s; }
.form-chip:hover { border-color: var(--gold); color: var(--navy-soft); }

/* ---------- sections ---------- */
.section { padding: 92px 0; }
.section.paper { background: var(--paper); border-top: 1px solid var(--paper-line); border-bottom: 1px solid var(--paper-line); }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-head h2 { font-size: clamp(27px, 3.2vw, 40px); font-weight: 600; color: var(--navy); margin-top: 16px; }
.section-head p { color: var(--text-soft); font-size: 17px; margin-top: 14px; }

/* feature grid — numbered because the modules map to a real workflow order */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.feature {
  background: var(--surface); border: 1px solid var(--line); border-radius: 16px;
  padding: 28px 26px 30px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s;
  position: relative; overflow: hidden;
}
.feature::after { content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0; background: var(--gold); transition: width .3s ease; }
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: transparent; }
.feature:hover::after { width: 100%; }
.feature .idx { font-family: var(--num); font-size: 12px; font-weight: 700; color: var(--gold-deep); letter-spacing: .1em; }
.feature .ico { width: 46px; height: 46px; border-radius: 12px; background: var(--paper); border: 1px solid var(--paper-line); display: grid; place-items: center; font-size: 22px; margin: 14px 0 18px; }
.feature h3 { font-size: 19px; font-weight: 600; color: var(--navy); }
.feature p { color: var(--text-soft); font-size: 14.5px; margin: 9px 0 0; }
.feature ul { list-style: none; padding: 0; margin: 16px 0 0; }
.feature li { font-size: 13.5px; color: var(--text-soft); padding-left: 22px; position: relative; margin: 7px 0; }
.feature li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 9px; height: 9px; border-right: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(45deg); }

/* split: thai-tax band */
.band { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.band-visual {
  background: var(--ink); border-radius: 20px; padding: 34px; color: var(--on-dark);
  position: relative; overflow: hidden;
}
.band-visual::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(90deg, rgba(244,246,251,.05) 1px, transparent 1px);
  background-size: 64px 100%; pointer-events: none;
}
.mini-row { position: relative; display: grid; grid-template-columns: 1fr auto auto; gap: 16px; align-items: center; padding: 13px 0; border-bottom: 1px solid rgba(244,246,251,.1); font-size: 14px; }
.mini-row:last-child { border-bottom: none; }
.mini-row .who { color: var(--on-dark); }
.mini-row .sub { color: var(--on-dark-mut); font-size: 12px; }
.mini-row .n { font-family: var(--num); font-variant-numeric: tabular-nums; color: #fff; font-weight: 600; }
.mini-row .tag { font-family: var(--num); font-size: 11px; font-weight: 600; color: var(--gold); border: 1px solid rgba(251,191,36,.4); border-radius: 6px; padding: 2px 7px; }
.band ul.checks { list-style: none; padding: 0; margin: 22px 0 0; }
.band ul.checks li { padding-left: 30px; position: relative; margin: 13px 0; color: var(--text-soft); font-size: 15.5px; }
.band ul.checks li::before { content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px; border-radius: 50%; background: rgba(46,139,87,.12); }
.band ul.checks li::after { content: ""; position: absolute; left: 6px; top: 8px; width: 6px; height: 9px; border-right: 2px solid var(--positive); border-bottom: 2px solid var(--positive); transform: rotate(42deg); }

/* steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; }
.step { padding: 0 24px; position: relative; }
.step:not(:last-child)::after { content: ""; position: absolute; right: 0; top: 22px; width: 1px; height: calc(100% - 22px); background: var(--line); }
.step .dot { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--gold); color: var(--gold-deep); display: grid; place-items: center; font-family: var(--num); font-weight: 700; counter-increment: step; }
.step .dot::before { content: counter(step, decimal-leading-zero); }
.step h3 { font-size: 17px; font-weight: 600; color: var(--navy); margin: 18px 0 8px; }
.step p { color: var(--text-soft); font-size: 14px; }

/* pricing / final CTA */
.cta {
  position: relative; background: var(--ink); color: var(--on-dark); border-radius: 24px;
  padding: 64px 56px; overflow: hidden; text-align: center;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(244,246,251,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,246,251,.05) 1px, transparent 1px);
  background-size: 100% 40px, 80px 100%;
  mask-image: radial-gradient(90% 120% at 50% 0%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(90% 120% at 50% 0%, #000, transparent 70%);
}
.cta > * { position: relative; z-index: 1; }
.cta h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 600; color: #fff; }
.cta p { color: var(--on-dark-mut); font-size: 17px; margin: 16px auto 32px; max-width: 36em; }
.cta .actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta .fine { color: var(--on-dark-mut); font-size: 13px; margin-top: 20px; }

/* footer */
.footer { background: var(--surface); border-top: 1px solid var(--line); padding: 56px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer .brand .name { color: var(--navy); }
.footer .brand .name b { color: var(--gold-deep); }
.footer p.about { color: var(--text-soft); font-size: 14px; margin: 16px 0 0; max-width: 28em; }
.footer h4 { font-family: var(--display); font-size: 13px; font-weight: 600; color: var(--navy); letter-spacing: .04em; margin: 0 0 14px; }
.footer a.f { display: block; color: var(--text-soft); font-size: 14px; padding: 5px 0; transition: color .15s; }
.footer a.f:hover { color: var(--gold-deep); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--text-mut); font-size: 13px; flex-wrap: wrap; gap: 10px; }

/* reveal animation */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .band, .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .doc-stage { min-height: 400px; margin-top: 8px; }
  .features { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 32px 0; }
  .step:nth-child(2)::after { display: none; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .nav-cta .btn-ghost { display: none; }
  .brand .name { font-size: 17px; }
  .features { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step:not(:last-child)::after { display: none; }
  .stat + .stat { border-left: none; padding-left: 0; }
  .stats { gap: 24px; }
  .cta { padding: 48px 24px; }
  .doc-front { width: 88%; }
  .doc-back { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .feature { transition: none; }
}