/* ============================================================
   CognitSky — static marketing site
   Teal-forward, light & conventional (NOT bento).
   Fonts: Poppins (headings) + Inter (body) + Noto Sans Thai (Thai).
   Light + dark via CSS custom properties remapped under
   @media (prefers-color-scheme: dark).
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@500;600;700&family=Inter:wght@400;500;600;700&family=Noto+Sans+Thai:wght@400;500;600;700&display=swap');

:root{
  color-scheme: light;
  /* brand */
  --teal:#17A2B8;
  --teal-2:#2BB7B3;
  --blue:#2D9CDB;
  --ink:#1F2D3D;
  --surface-dark:#26323F;
  /* light theme surfaces & text */
  --bg:#FFFFFF;
  --bg-alt:#F3F7F9;
  --surface:#FFFFFF;
  --text:#1F2D3D;
  --text-soft:#51606E;
  --text-faint:#7E8B97;
  --line:#E2E9ED;
  --chip:#FFFFFF;         /* light chip behind dark logo/badge */
  --hero-panel:transparent;
  --shadow:0 1px 2px rgba(31,45,61,.06), 0 10px 26px rgba(31,45,61,.08);
  --shadow-hover:0 6px 16px rgba(31,45,61,.10), 0 20px 44px rgba(31,45,61,.14);
  --radius:14px;
  --radius-sm:10px;
  --maxw:1160px;
  --grad:linear-gradient(135deg,var(--teal),var(--blue));
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','Noto Sans Thai',system-ui,sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  transition:background .2s, color .2s;
}
h1,h2,h3,h4{font-family:'Poppins','Noto Sans Thai',system-ui,sans-serif; letter-spacing:-.01em; color:var(--text); line-height:1.18;}
:lang(th) h1,:lang(th) h2,:lang(th) h3,:lang(th) h4,
html[lang="th"] h1,html[lang="th"] h2,html[lang="th"] h3,html[lang="th"] h4{font-family:'Noto Sans Thai','Poppins',sans-serif;}
a{color:var(--teal); text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%; display:block;}
p{margin:0 0 1rem;}
.container{max-width:var(--maxw); margin:0 auto; padding:0 24px;}
.visually-hidden{position:absolute; width:1px; height:1px; margin:-1px; padding:0; overflow:hidden; clip:rect(0 0 0 0); border:0;}

/* focus visibility across all interactive elements */
a:focus-visible,button:focus-visible,input:focus-visible,
textarea:focus-visible,.lang-btn:focus-visible,summary:focus-visible{
  outline:3px solid var(--blue);
  outline-offset:2px;
  border-radius:4px;
}

/* ── buttons ── */
.btn{display:inline-flex; align-items:center; gap:8px; padding:13px 24px; border-radius:var(--radius-sm);
  font-weight:600; font-size:.95rem; font-family:'Poppins','Noto Sans Thai',sans-serif; cursor:pointer;
  border:1px solid transparent; transition:transform .18s, box-shadow .18s, background .18s;}
.btn-primary{background:var(--grad); color:#fff; box-shadow:var(--shadow);}
.btn-primary:hover{transform:translateY(-2px); box-shadow:var(--shadow-hover); text-decoration:none;}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--surface); border:1px solid var(--line); color:var(--text);}
.btn-ghost:hover{border-color:var(--teal); color:var(--teal); text-decoration:none;}

/* ── chip (light rounded panel behind dark logo & badge) ── */
.chip{display:inline-flex; align-items:center; justify-content:center; background:var(--chip);
  border-radius:var(--radius-sm); padding:7px 12px; box-shadow:var(--shadow);}

/* ── navbar ── */
.navbar{position:sticky; top:0; z-index:100; background:color-mix(in srgb,var(--bg) 86%, transparent);
  backdrop-filter:blur(10px); border-bottom:1px solid var(--line);}
.nav-inner{display:flex; align-items:center; justify-content:space-between; gap:16px; height:74px;}
.nav-logo{display:flex; align-items:center;}
.nav-logo .chip{padding:6px 12px;}
.nav-logo img{height:40px; width:auto;}
.nav-right{display:flex; align-items:center; gap:14px;}
.nav-links{list-style:none; display:flex; gap:4px; margin:0; padding:0; align-items:center;}
.nav-links a{font-size:.9rem; color:var(--text-soft); padding:9px 14px; border-radius:100px; font-weight:600; transition:.18s;}
.nav-links a:hover{color:var(--teal); background:var(--bg-alt); text-decoration:none;}
.nav-cta{background:var(--grad) !important; color:#fff !important; box-shadow:var(--shadow);}
.nav-cta:hover{color:#fff !important; background:var(--grad) !important; transform:translateY(-1px);}

/* language switch */
.lang-switch{display:inline-flex; align-items:center; border:1px solid var(--line); border-radius:100px; overflow:hidden; background:var(--surface);}
.lang-btn{background:none; border:none; padding:7px 12px; font-size:.82rem; font-weight:700; color:var(--text-soft); cursor:pointer; font-family:'Poppins',sans-serif; transition:.15s;}
.lang-btn[aria-pressed="true"]{background:var(--grad); color:#fff;}
.lang-sep{color:var(--line); font-size:.75rem;}

.nav-toggle{display:none; background:none; border:1px solid var(--line); border-radius:8px; color:var(--text);
  width:40px; height:38px; font-size:1.3rem; cursor:pointer; align-items:center; justify-content:center;}

/* ── hero ── */
.hero{padding:68px 0 56px; background:var(--bg-alt); border-bottom:1px solid var(--line);}
.hero-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:48px; align-items:center;}
.hero-grid > *{min-width:0;}
.eyebrow{display:inline-flex; align-items:center; gap:8px; font-size:.8rem; font-weight:700; letter-spacing:.08em;
  text-transform:uppercase; color:var(--teal); margin-bottom:16px;}
.hero h1{font-size:2.7rem; margin:0 0 18px;}
.hero h1 .hl{background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent;}
.hero-sub{font-size:1.1rem; color:var(--text-soft); max-width:560px; margin:0 0 26px;}
.hero-cta-row{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:26px;}
.hero-badges{display:flex; align-items:center; gap:12px; flex-wrap:wrap;}
.hero-badges .chip img{height:52px; width:auto;}
.hero-badges .badge-cap{font-size:.82rem; color:var(--text-soft); font-weight:600; max-width:200px;}
.hero-visual{display:flex; justify-content:center; align-items:center; padding:14px; border-radius:var(--radius); background:var(--hero-panel);}
.hero-visual img{width:100%; max-width:460px; height:auto;}

/* ── highlights strip (qualitative, non-numeric; inline row, not cards) ── */
.highlights{padding:26px 0; background:var(--bg); border-bottom:1px solid var(--line);}
.highlights-row{display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:14px 36px;}
.hl-item{display:inline-flex; align-items:center; gap:10px; font-weight:600; font-size:.95rem; color:var(--text);}
.hl-ic{display:inline-flex; align-items:center; justify-content:center; width:34px; height:34px; border-radius:50%; background:color-mix(in srgb,var(--teal) 14%, transparent); color:var(--teal); flex-shrink:0;}
.hl-ic svg{width:18px; height:18px;}
.hl-item + .hl-item{position:relative;}
.hl-item + .hl-item::before{content:""; position:absolute; left:-18px; top:50%; transform:translateY(-50%); width:1px; height:22px; background:var(--line);}

/* ── section scaffolding ── */
.section{padding:72px 0;}
.section.alt{background:var(--bg-alt);}
.section-head{text-align:center; max-width:680px; margin:0 auto 44px;}
.section-head .eyebrow{justify-content:center;}
.section-head h2{font-size:2rem; margin:0 0 12px;}
.section-head p{color:var(--text-soft); font-size:1.05rem; margin:0;}

/* ── services: alternating editorial rows (no cards / no grid) ── */
.svc-rows{display:flex; flex-direction:column;}
.svc-row{display:grid; grid-template-columns:minmax(220px,.9fr) 1.6fr; gap:40px; align-items:center;
  padding:34px 0; border-top:1px solid var(--line);}
.svc-row:last-child{border-bottom:1px solid var(--line);}
/* every even row flips the illustration to the right for an alternating rhythm */
.svc-row:nth-child(even){grid-template-columns:1.6fr minmax(220px,.9fr);}
.svc-row:nth-child(even) .svc-art{order:2;}
.svc-row:nth-child(even) .svc-body{order:1;}
.svc-art{position:relative; display:flex; align-items:center; justify-content:center; min-height:140px;
  border-radius:var(--radius); background:color-mix(in srgb,var(--teal) 9%, transparent); color:var(--teal);}
.svc-art svg{width:68px; height:68px; position:relative; z-index:1;}
.svc-no{position:absolute; top:10px; left:16px; font-family:'Poppins',sans-serif; font-weight:700;
  font-size:2.6rem; line-height:1; color:color-mix(in srgb,var(--teal) 24%, transparent); z-index:0;}
.svc-body h3{font-size:1.45rem; margin:0 0 10px;}
.svc-body p{color:var(--text-soft); font-size:1rem; margin:0; max-width:620px;}

/* ── about / mission ── */
.about-grid{display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center;}
.about-grid h2{font-size:2rem; margin:0 0 16px;}
.about-grid p{color:var(--text-soft);}
.about-points{list-style:none; margin:18px 0 0; padding:0; display:grid; gap:12px;}
.about-points li{display:flex; gap:12px; align-items:flex-start; color:var(--text-soft);}
.about-points svg{flex-shrink:0; width:22px; height:22px; color:var(--teal); margin-top:2px;}
.about-visual{background:var(--grad); border-radius:var(--radius); padding:40px; color:#fff; box-shadow:var(--shadow);}
.about-visual h3{color:#fff; font-size:1.4rem; margin:0 0 10px;}
.about-visual p{color:rgba(255,255,255,.9); margin:0;}

/* ── contact: full-width teal/navy band, centered single column ── */
.contact-band{position:relative; padding:76px 0; color:#fff;
  background:linear-gradient(135deg,#0E7F91 0%,#17A2B8 45%,#1F2D3D 100%);}
.contact-wrap{max-width:760px; margin:0 auto; padding:0 24px;}
.contact-head{text-align:center; margin-bottom:26px;}
.contact-head .eyebrow{justify-content:center; color:#D6F4FA;}
.contact-head h2{color:#fff; font-size:2.1rem; margin:0 0 12px;}
.contact-head p{color:rgba(255,255,255,.9); max-width:560px; margin:0 auto;}

/* contact facts as a centered inline pill row (distinct from the old icon list) */
.contact-pills{list-style:none; margin:0 0 30px; padding:0; display:flex; flex-wrap:wrap; justify-content:center; gap:12px;}
.contact-pills li{display:inline-flex; align-items:center; background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25); border-radius:100px; padding:9px 16px; font-size:.9rem; color:#fff; font-weight:500;}
.contact-pills a{color:#fff; display:inline-flex; align-items:center;}
.contact-pills a:hover{text-decoration:underline;}
.contact-pills .pill-k{font-size:.72rem; text-transform:uppercase; letter-spacing:.06em; font-weight:700; color:#CFF0F6; margin-right:8px; white-space:nowrap;}
.contact-pills li > .pill-k{margin-right:8px;}

.contact-form{background:var(--surface); color:var(--text); border:1px solid var(--line); border-radius:var(--radius); padding:30px; box-shadow:var(--shadow-hover);}
.form-row{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
.form-field{display:flex; flex-direction:column; margin-bottom:16px;}
.form-field label{font-size:.85rem; font-weight:600; margin-bottom:6px; color:var(--text);}
.form-field input,.form-field textarea{font:inherit; padding:11px 13px; border:1px solid var(--line); border-radius:var(--radius-sm);
  background:var(--bg); color:var(--text); transition:border-color .15s;}
.form-field input:focus,.form-field textarea:focus{border-color:var(--teal); outline:none;}
.form-field textarea{resize:vertical; min-height:120px;}
.consent{display:flex; gap:10px; align-items:flex-start; margin-bottom:18px; font-size:.86rem; color:var(--text-soft);}
.consent input{margin-top:3px; width:17px; height:17px; flex-shrink:0; accent-color:var(--teal);}
.consent label{font-size:.86rem; line-height:1.5;}

/* ── footer ── */
.footer{background:var(--surface-dark); color:#C7D1DB; padding:52px 0 28px;}
.footer a{color:#C7D1DB;}
.footer a:hover{color:#fff;}
.footer-top{display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:36px; margin-bottom:34px;}
.footer .chip{padding:6px 12px;}
.footer .chip img{height:36px; width:auto;}
.footer-brand-badges{display:flex; align-items:center; gap:14px; margin:18px 0;}
.footer-brand-badges .chip img{height:46px;}
.footer-brand p{color:#9FB0BD; font-size:.9rem; max-width:320px; margin:14px 0 0;}
.footer-col h4{color:#fff; font-size:.95rem; margin:0 0 14px;}
.footer-col ul{list-style:none; margin:0; padding:0; display:grid; gap:9px; font-size:.9rem;}
.footer-legal{border-top:1px solid rgba(255,255,255,.12); padding-top:22px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:.84rem; color:#9FB0BD;}
.footer-legal .addr{max-width:560px;}

/* ── privacy page ── */
.doc{max-width:820px; margin:0 auto; padding:56px 24px 72px;}
.doc h1{font-size:2.2rem; margin:0 0 10px;}
.doc .lede{color:var(--text-soft); font-size:1.05rem; margin:0 0 32px;}
.doc h2{font-size:1.35rem; margin:34px 0 10px;}
.doc p,.doc li{color:var(--text-soft);}
.doc ul{padding-left:20px; display:grid; gap:6px;}
.doc .note{background:var(--bg-alt); border:1px solid var(--line); border-left:4px solid var(--teal); border-radius:var(--radius-sm); padding:16px 18px; font-size:.92rem; margin:28px 0;}
.back-link{display:inline-flex; align-items:center; gap:6px; font-weight:600; margin-bottom:24px;}

/* ============================================================
   Dark theme — hand-tuned (not auto-inverted). Last in file so it
   wins the cascade. Only luminance / surface variables are remapped;
   brand hues (teal/blue) stay in the family.
   ============================================================ */
@media (prefers-color-scheme: dark){
  :root{
    color-scheme: dark;
    --bg:#1A232D;
    --bg-alt:#1F2A35;
    --surface:#26323F;
    --surface-dark:#141C24;
    --text:#EAF0F4;
    --text-soft:#AFBECB;
    --text-faint:#8495A2;
    --line:#38454F;
    --chip:#FFFFFF;                 /* keep chips light so dark logo/badge stay legible */
    --hero-panel:#F3F7F9;           /* light contrasting panel so the white-ish hero art doesn't wash out */
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 10px 26px rgba(0,0,0,.5);
    --shadow-hover:0 6px 16px rgba(0,0,0,.5), 0 20px 44px rgba(0,0,0,.6);
  }
  /* teal/blue slightly lifted for AA contrast on dark surfaces */
  :root{
    --teal:#3FC2D6;
    --teal-2:#4CD0CB;
    --blue:#5BB4EC;
    --grad:linear-gradient(135deg,#3FC2D6,#5BB4EC);
  }
  .btn-primary{color:#06222A;}      /* dark text on bright gradient for AA */
  .about-visual{color:#06222A;}
  .about-visual h3{color:#06222A;}
  .about-visual p{color:rgba(6,34,42,.86);}
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr; gap:34px;}
  .hero-visual{order:-1;}
  .about-grid,.contact-grid{grid-template-columns:1fr; gap:32px;}
  .footer-top{grid-template-columns:1fr 1fr;}
}
@media (max-width:700px){
  .nav-links{position:absolute; top:74px; left:0; right:0; flex-direction:column; align-items:stretch;
    background:var(--bg); border-bottom:1px solid var(--line); padding:12px 24px; gap:6px; display:none; box-shadow:var(--shadow);}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 14px; border-radius:10px;}
  .nav-toggle{display:inline-flex;}
  .hero h1{font-size:2.1rem;}
  .section{padding:52px 0;}
  .section-head h2,.about-grid h2,.contact-info h2{font-size:1.6rem;}
  /* services rows stack: illustration on top, text below, no left/right flip */
  .svc-row,.svc-row:nth-child(even){grid-template-columns:1fr; gap:18px;}
  .svc-row:nth-child(even) .svc-art{order:0;}
  .svc-row:nth-child(even) .svc-body{order:0;}
  .svc-art{min-height:120px;}
  .svc-body h3{font-size:1.25rem;}
  .highlights-row{flex-direction:column; gap:14px;}
  .hl-item + .hl-item::before{display:none;}
  .form-row{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
  .footer-legal{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important; scroll-behavior:auto !important;}
}