/* ===========================================================================
   TERNARY THAILAND — ternarythailand.com
   Static site stylesheet
   =========================================================================== */

:root {
  --bg: #0b0d1a;
  --bg-2: #11142a;
  --panel: #161a33;
  --panel-2: #1c2140;
  --line: rgba(255, 255, 255, 0.10);
  --ink: #eef1ff;
  --muted: #a6adcf;
  --muted-2: #7b83a8;
  --brand: #6d4bff;
  --brand-2: #4b6bff;
  --brand-3: #22d3ee;
  --grad: linear-gradient(120deg, #6d4bff 0%, #4b6bff 50%, #22d3ee 100%);
  --radius: 20px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --max: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 600px at 80% -8%, rgba(109, 75, 255, 0.22), transparent 60%),
    radial-gradient(900px 500px at 8% 10%, rgba(34, 211, 238, 0.14), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: "Noto Sans Thai", "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Header / Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 13, 26, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; letter-spacing: .3px; }
.brand img { width: 34px; height: 34px; }
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--muted-2); letter-spacing: 2px; }
.nav__links { display: flex; align-items: center; gap: 26px; }
.nav__links a { color: var(--muted); font-size: 15px; transition: color .2s; }
.nav__links a:hover { color: var(--ink); }
.lang {
  border: 1px solid var(--line); background: var(--panel);
  color: var(--ink); border-radius: 999px; padding: 6px 14px;
  font-size: 13px; font-weight: 600; cursor: pointer; transition: border-color .2s, background .2s;
}
.lang:hover { border-color: var(--brand); }
.nav__toggle { display: none; }

/* ---------- Hero ---------- */
.hero { padding: 96px 0 60px; text-align: center; position: relative; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.03);
  padding: 7px 16px; border-radius: 999px; font-size: 13px; color: var(--muted);
  margin-bottom: 26px;
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: #34d399; box-shadow: 0 0 12px #34d399; }
.hero h1 { font-size: clamp(38px, 7vw, 74px); line-height: 1.05; margin: 0 0 20px; font-weight: 800; letter-spacing: -1px; }
.hero p { font-size: clamp(16px, 2.4vw, 20px); color: var(--muted); max-width: 640px; margin: 0 auto 34px; }
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 26px; border-radius: 14px; font-weight: 600; font-size: 15px;
  cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s, border-color .2s;
  border: 1px solid transparent;
}
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 14px 34px -12px rgba(109,75,255,0.7); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 20px 44px -12px rgba(109,75,255,0.8); }
.btn--ghost { background: var(--panel); border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--brand); transform: translateY(-2px); }

.stats {
  display: flex; gap: 44px; justify-content: center; flex-wrap: wrap;
  margin-top: 58px;
}
.stat b { display: block; font-size: 34px; font-weight: 800; }
.stat span { color: var(--muted-2); font-size: 14px; }

/* ---------- Sections ---------- */
section { padding: 70px 0; }
.sec-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.sec-head .kicker { color: var(--brand-3); font-weight: 700; letter-spacing: 2px; font-size: 13px; text-transform: uppercase; }
.sec-head h2 { font-size: clamp(28px, 4.5vw, 42px); margin: 12px 0 14px; font-weight: 800; letter-spacing: -.5px; }
.sec-head p { color: var(--muted); margin: 0; }

/* ---------- Projects ---------- */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  position: relative; overflow: hidden;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; display: flex; flex-direction: column;
  transition: transform .2s, border-color .2s, box-shadow .3s;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--accent, var(--grad));
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent, var(--brand)) 55%, transparent); box-shadow: var(--shadow); }

.card__top { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.card__logo {
  width: 62px; height: 62px; border-radius: 16px; flex: none;
  display: grid; place-items: center; overflow: hidden;
  background: var(--logo-bg, rgba(255,255,255,0.05));
  border: 1px solid var(--line);
}
.card__logo img { width: 74%; height: 74%; object-fit: contain; }
.card__title { margin: 0; font-size: 22px; font-weight: 800; }
.card__type { font-size: 12.5px; color: var(--muted-2); letter-spacing: .5px; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; padding: 5px 11px; border-radius: 999px;
  margin-left: auto; white-space: nowrap;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; }
.badge--live { background: rgba(52, 211, 153, 0.14); color: #6ee7b7; }
.badge--live .dot { background: #34d399; box-shadow: 0 0 10px #34d399; }
.badge--dev { background: rgba(244, 166, 59, 0.14); color: #fbbf6b; }
.badge--dev .dot { background: #f4a63b; }

.card__desc { color: var(--muted); font-size: 15px; margin: 0 0 18px; flex: 1; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.chip {
  font-size: 12.5px; color: var(--muted); background: rgba(255,255,255,0.04);
  border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px;
}

.card__links { display: flex; gap: 10px; flex-wrap: wrap; }
.link {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 600; padding: 9px 15px; border-radius: 11px;
  border: 1px solid var(--line); background: rgba(255,255,255,0.03);
  color: var(--ink); transition: border-color .2s, background .2s, transform .15s;
}
.link:hover { border-color: var(--accent, var(--brand)); background: rgba(255,255,255,0.06); transform: translateY(-1px); }
.link--solid { background: var(--accent, var(--brand)); border-color: transparent; color: #fff; }
.link svg { width: 15px; height: 15px; }

/* ---------- About ---------- */
.about {
  background: linear-gradient(180deg, transparent, rgba(109,75,255,0.05));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.about__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.about h2 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 18px; font-weight: 800; letter-spacing: -.5px; }
.about p { color: var(--muted); margin: 0 0 16px; }
.values { display: grid; gap: 14px; }
.value { display: flex; gap: 14px; align-items: flex-start; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; }
.value .ico { width: 42px; height: 42px; border-radius: 11px; background: var(--grad); display: grid; place-items: center; flex: none; font-size: 20px; }
.value h4 { margin: 0 0 4px; font-size: 16px; }
.value p { margin: 0; font-size: 14px; }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact__box {
  max-width: 720px; margin: 0 auto; padding: 50px 30px;
  background: linear-gradient(160deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line); border-radius: 26px;
}
.contact h2 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 12px; font-weight: 800; }
.contact p { color: var(--muted); margin: 0 0 26px; }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); padding: 40px 0; }
.foot__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.foot small { color: var(--muted-2); font-size: 13.5px; }
.foot__links { display: flex; gap: 20px; }
.foot__links a { color: var(--muted); font-size: 14px; }
.foot__links a:hover { color: var(--ink); }

/* ---------- Language visibility ---------- */
[data-lang] { display: none; }
html[lang="th"] [data-lang="th"] { display: initial; }
html[lang="en"] [data-lang="en"] { display: initial; }
.btn [data-lang], .link [data-lang], .badge [data-lang] { display: none; }
html[lang="th"] .btn [data-lang="th"],
html[lang="th"] .link [data-lang="th"],
html[lang="th"] .badge [data-lang="th"] { display: inline; }
html[lang="en"] .btn [data-lang="en"],
html[lang="en"] .link [data-lang="en"],
html[lang="en"] .badge [data-lang="en"] { display: inline; }

/* ---------- Subpage / Contact page ---------- */
.page-head { padding: 70px 0 10px; text-align: center; }
.page-head .kicker { color: var(--brand-3); font-weight: 700; letter-spacing: 2px; font-size: 13px; text-transform: uppercase; }
.page-head h1 { font-size: clamp(32px, 5.5vw, 54px); margin: 12px 0 14px; font-weight: 800; letter-spacing: -.5px; }
.page-head p { color: var(--muted); max-width: 620px; margin: 0 auto; }

.contact-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 26px; align-items: stretch; }

.info-card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; display: flex; flex-direction: column; gap: 6px;
}
.info-card h3 { margin: 0 0 2px; font-size: 22px; font-weight: 800; }
.info-card .reg { color: var(--muted-2); font-size: 13.5px; margin-bottom: 16px; }
.info-row { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-top: 1px solid var(--line); }
.info-row:first-of-type { border-top: none; }
.info-row .ico { width: 40px; height: 40px; border-radius: 11px; background: var(--grad); display: grid; place-items: center; flex: none; font-size: 18px; }
.info-row .k { font-size: 12.5px; color: var(--muted-2); letter-spacing: .4px; margin-bottom: 2px; }
.info-row .v { font-size: 15.5px; color: var(--ink); line-height: 1.5; }
.info-row a.v:hover { color: var(--brand-3); }

.map-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; background: var(--panel); }
.map-wrap { position: relative; width: 100%; padding-top: 62%; }
.map-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; pointer-events: none; }
.map-overlay { position: absolute; inset: 0; z-index: 2; display: block; cursor: pointer; }
.map-overlay:hover { background: rgba(109,75,255,0.06); }
.map-pin {
  position: absolute; left: 50%; top: 50%; z-index: 3; transform: translate(-50%, -100%);
  font-size: 30px; pointer-events: none; filter: drop-shadow(0 4px 6px rgba(0,0,0,.5));
}
.map-bar { display: flex; gap: 10px; padding: 16px; flex-wrap: wrap; align-items: center; }
.map-bar .coords { font-size: 13.5px; color: var(--muted); margin-right: auto; }
.map-bar .coords b { color: var(--ink); font-weight: 600; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about__grid { grid-template-columns: 1fr; gap: 30px; }
  .nav__links { display: none; }
  .nav__links.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--line); padding: 18px 22px; gap: 16px;
  }
  .nav__toggle {
    display: inline-grid; place-items: center; width: 42px; height: 42px;
    border: 1px solid var(--line); border-radius: 11px; background: var(--panel); cursor: pointer;
  }
  .nav__toggle span { width: 18px; height: 2px; background: var(--ink); position: relative; }
  .nav__toggle span::before, .nav__toggle span::after { content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink); }
  .nav__toggle span::before { top: -6px; } .nav__toggle span::after { top: 6px; }
  .nav__mobile-lang { display: flex; }
}
@media (min-width: 861px) { .nav__mobile-lang { display: none; } }