/* =====================================================================
   ttmf.css — Tha To Mek Farm design system (custom, modern)
   คอนเซปต์ "เลี้ยงด้วยการวัด ไม่ใช่การเดา": ทะเลลึก + ทอง + telemetry
   ไม่อ้างอิงเทมเพลต BootstrapMade ของฟาร์มวัว
   ===================================================================== */

:root {
  --ink:        #0a2540;   /* ข้อความหลัก */
  --ink-soft:   #4a5b70;
  --sea:        #0b5ea8;   /* ฟ้าแบรนด์ */
  --sea-bright: #2f9fe0;
  --sea-deep:   #062f5c;   /* ทะเลลึก (hero/footer) */
  --gold:       #c79a3b;
  --gold-soft:  #e4c778;
  --surf:       #eef5fb;   /* พื้นอ่อน */
  --foam:       #f7fbfe;
  --line:       #dce7f1;
  --white:      #ffffff;

  --font-display: "Marcellus", Georgia, serif;
  --font-body:    "Sarabun", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, monospace;

  --shadow-sm: 0 1px 3px rgba(10,37,64,.06), 0 1px 2px rgba(10,37,64,.04);
  --shadow:    0 8px 30px rgba(10,37,64,.08);
  --shadow-lg: 0 24px 60px rgba(6,47,92,.18);
  --radius: 18px;
  --wrap: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
.page-hero { overflow: hidden; }
body {
  margin: 0; font-family: var(--font-body); color: var(--ink);
  background: var(--white); line-height: 1.7; -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1,h2,h3,h4 { font-family: var(--font-display); font-weight: 400; line-height: 1.15; color: var(--ink); margin: 0; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 24px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

/* ---- eyebrow + section head (telemetry tick motif) ---- */
.eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .22em;
  text-transform: uppercase; color: var(--sea); font-weight: 500;
}
.eyebrow::before { content:""; width: 26px; height: 1px; background: var(--gold); }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: clamp(2rem, 4vw, 3rem); margin-top: 14px; letter-spacing: -.01em; }
.section-head p { color: var(--ink-soft); margin-top: 12px; font-size: 1.05rem; }

/* ---- buttons ---- */
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .85rem 1.6rem;
  border-radius: 999px; font-weight: 600; font-size: .98rem; cursor: pointer; border: 1px solid transparent;
  transition: transform .25s ease, box-shadow .25s ease, background .25s; }
.btn-gold { background: var(--gold); color: var(--sea-deep); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(199,154,59,.4); }
.btn-sea { background: var(--sea); color: #fff; }
.btn-sea:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(11,94,168,.35); }
.btn-ghost { background: transparent; border-color: rgba(255,255,255,.4); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline { background: transparent; border-color: var(--line); color: var(--sea); }
.btn-outline:hover { border-color: var(--sea); background: var(--surf); }

/* =====================================================================
   NAVBAR — glass, sticky
   ===================================================================== */
.nav { position: sticky; top: 0; z-index: 60; transition: background .3s, box-shadow .3s; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.nav-brand { display: flex; align-items: center; gap: 12px; }
.nav-brand img { width: 44px; height: 44px; border-radius: 12px; object-fit: cover; box-shadow: var(--shadow-sm); }
.nav-brand b { font-family: var(--font-display); font-size: 1.35rem; font-weight: 400; color: #fff; letter-spacing: .01em; }
.nav-brand small { display:block; font-family: var(--font-mono); font-size: .58rem; letter-spacing: .18em; color: var(--gold-soft); text-transform: uppercase; margin-top: 2px;}
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a { padding: .55rem .95rem; border-radius: 999px; font-size: .95rem; color: rgba(255,255,255,.85); transition: background .2s, color .2s; }
.nav-links a:hover, .nav-links a.active { background: rgba(255,255,255,.14); color: #fff; }
.nav-cta { margin-left: 8px; padding: .55rem 1.25rem; border-radius: 999px; background: var(--gold); color: var(--sea-deep); font-weight: 600; font-size: .92rem; }
.nav-cta:hover { transform: translateY(-1px); }
/* transparent over hero, solid after scroll */
.nav.solid { background: rgba(6,47,92,.92); backdrop-filter: blur(12px); box-shadow: 0 4px 24px rgba(6,47,92,.25); }
.nav-toggle { display: none; background: rgba(255,255,255,.15); border: 0; color: #fff; width: 42px; height: 42px; border-radius: 12px; font-size: 1.3rem; cursor: pointer; }

/* =====================================================================
   HERO
   ===================================================================== */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; margin-top: -74px; padding-top: 74px; color: #fff; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: -2; overflow: hidden; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; animation: heroZoom 18s ease-out both; }
@keyframes heroZoom { from { transform: scale(1.08); } to { transform: scale(1); } }
/* overlay บางลง ให้เห็นวิวมากกว่าสีน้ำเงิน + ใช้เงาตัวอักษรช่วยอ่าน */
.hero-bg::after { content:""; position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(6,47,92,.62) 0%, rgba(6,47,92,.34) 44%, rgba(6,47,92,.08) 100%); }
.hero-inner { padding: 60px 0 90px; max-width: 720px; }
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); line-height: 1.05; letter-spacing: -.02em; color: #fff; text-shadow: 0 2px 24px rgba(4,16,30,.45); }
.hero h1 .accent { color: var(--gold-soft); }
.hero p.lead { font-size: 1.2rem; color: rgba(255,255,255,.92); margin: 22px 0 32px; max-width: 560px; text-shadow: 0 1px 16px rgba(4,16,30,.4); }
.hero .eyebrow, .hero .hero-eyebrow { text-shadow: 0 1px 12px rgba(4,16,30,.5); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-eyebrow { margin-bottom: 20px; color: var(--gold-soft); }
.hero-eyebrow::before { background: var(--gold-soft); }

/* hero trust strip (จุดเด่นเชิงลูกค้า ไม่ใช่ค่าเซนเซอร์) */
.hero-trust { position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
  background: linear-gradient(0deg, rgba(6,47,92,.96), rgba(6,47,92,0)); padding: 26px 0 30px; }
.hero-trust-inner { display: flex; gap: 34px; flex-wrap: wrap; align-items: center; }
.hero-trust .item { display: inline-flex; align-items: center; gap: 12px; color: rgba(255,255,255,.9); }
.hero-trust .item i { font-size: 1.5rem; color: var(--gold-soft); }
.hero-trust .item b { font-family: var(--font-body); font-weight: 600; font-size: .98rem; display: block; }
.hero-trust .item span { font-size: .8rem; color: rgba(255,255,255,.6); }

/* ---- line-icon badges (แทน emoji) ---- */
.icon-badge { width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(140deg, var(--sea), var(--sea-bright)); color: #fff; font-size: 1.5rem;
  box-shadow: 0 8px 20px rgba(11,94,168,.25); flex-shrink: 0; }
.icon-badge.gold { background: linear-gradient(140deg, var(--gold), var(--gold-soft)); box-shadow: 0 8px 20px rgba(199,154,59,.28); }
.mini-list .ic { background: var(--surf); }
.mini-list .ic i { color: var(--sea); font-size: 1.3rem; }

/* about intro facts row */
.about-facts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.about-facts .fact { display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px;
  background: var(--surf); border: 1px solid var(--line); border-radius: 12px; font-size: .9rem; color: var(--ink-soft); }
.about-facts .fact i { color: var(--sea); font-size: 1.1rem; }
.about-facts .fact b { color: var(--ink); font-weight: 600; }

/* =====================================================================
   FACT MARQUEE
   ===================================================================== */
.facts { background: var(--sea-deep); color: #fff; padding: 20px 0; overflow: hidden; }
.facts-track { display: flex; gap: 56px; white-space: nowrap; animation: marquee 32s linear infinite; }
.facts span { font-family: var(--font-mono); font-size: .82rem; letter-spacing: .08em; color: rgba(255,255,255,.75); display: inline-flex; align-items: center; gap: 12px; }
.facts span::after { content: "◆"; color: var(--gold); font-size: .6rem; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* =====================================================================
   SPLIT (about / product) — asymmetric with offset gold frame
   ===================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.split.rev .split-media { order: 2; }
.split-media { position: relative; }
.split-media img { border-radius: var(--radius); box-shadow: var(--shadow-lg); position: relative; z-index: 2; aspect-ratio: 4/3; object-fit: cover; }
.split-media::before { content:""; position: absolute; inset: 22px -22px -22px 22px; border: 2px solid var(--gold); border-radius: var(--radius); z-index: 1; }
.split-body h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.split-body p { color: var(--ink-soft); margin: 18px 0; }
.mini-list { display: grid; gap: 14px; margin: 22px 0; }
.mini-list li { list-style: none; display: flex; gap: 14px; }
.mini-list .ic { flex-shrink: 0; width: 42px; height: 42px; border-radius: 12px; background: var(--surf); color: var(--sea);
  display: grid; place-items: center; font-size: 1.2rem; }
.mini-list h4 { font-family: var(--font-body); font-weight: 700; font-size: 1rem; margin-bottom: 2px; }
.mini-list p { margin: 0; font-size: .92rem; }

/* =====================================================================
   PROCESS timeline — measurement ticks (signature)
   ===================================================================== */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; position: relative; }
.flow::before { content:""; position: absolute; top: 30px; left: 6%; right: 6%; height: 2px;
  background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px); }
.flow-step { text-align: center; padding: 0 10px; position: relative; }
.flow-num { width: 60px; height: 60px; margin: 0 auto 18px; border-radius: 50%; background: #fff; border: 2px solid var(--sea);
  color: var(--sea); font-family: var(--font-mono); font-size: 1rem; display: grid; place-items: center; position: relative; z-index: 2; }
.flow-step:hover .flow-num { background: var(--sea); color: #fff; }
.flow-step h4 { font-family: var(--font-body); font-weight: 700; font-size: 1.02rem; margin-bottom: 6px; }
.flow-step p { color: var(--ink-soft); font-size: .88rem; margin: 0; }

/* =====================================================================
   GALLERY — masonry-ish
   ===================================================================== */
.gallery { columns: 3; column-gap: 16px; }
.gallery a { display: block; margin-bottom: 16px; border-radius: 14px; overflow: hidden; position: relative; break-inside: avoid; }
.gallery img { transition: transform .6s ease; width: 100%; }
.gallery a::after { content:""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(6,47,92,.35), transparent 55%); opacity: 0; transition: opacity .35s; }
.gallery a:hover img { transform: scale(1.06); }
.gallery a:hover::after { opacity: 1; }

/* =====================================================================
   BLOG cards
   ===================================================================== */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .3s, box-shadow .3s; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card-img { display: block; aspect-ratio: 16/10; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 22px; }
.card-date { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; color: var(--sea); text-transform: uppercase; }
.card-body h3 { font-size: 1.25rem; margin: 10px 0; }
.card-meta { font-size: .85rem; color: var(--ink-soft); display: flex; align-items: center; gap: 8px; }
.readmore { display: inline-flex; align-items: center; gap: 6px; color: var(--sea); font-weight: 600; font-size: .9rem; margin-top: 14px; }

/* =====================================================================
   CTA band + FOOTER
   ===================================================================== */
.cta { background: linear-gradient(120deg, var(--sea-deep), var(--sea)); color: #fff; border-radius: 26px; padding: 60px; text-align: center; position: relative; overflow: hidden; }
.cta::before { content:""; position: absolute; inset: 0; background: radial-gradient(circle at 80% 20%, rgba(199,154,59,.25), transparent 45%); }
.cta h2 { color: #fff; font-size: clamp(1.8rem, 3.5vw, 2.6rem); position: relative; }
.cta p { color: rgba(255,255,255,.8); margin: 14px auto 28px; max-width: 520px; position: relative; }

.footer { background: var(--sea-deep); color: rgba(255,255,255,.7); padding: 72px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; }
.footer h4 { font-family: var(--font-body); font-weight: 700; color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer a:hover { color: #fff; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; font-size: .92rem; }
.footer-brand b { font-family: var(--font-display); color: #fff; font-size: 1.4rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 48px; padding-top: 22px; text-align: center; font-size: .82rem; color: rgba(255,255,255,.5); font-family: var(--font-mono); letter-spacing: .04em; }

/* =====================================================================
   PAGE TITLE (subpages)
   ===================================================================== */
.page-hero { position: relative; padding: 150px 0 70px; color: #fff; margin-top: -74px; }
.page-hero-bg { position: absolute; inset: 0; z-index: -1; }
.page-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.page-hero-bg::after { content:""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,47,92,.85), rgba(6,47,92,.7)); }
.page-hero h1 { color: #fff; font-size: clamp(2.2rem, 5vw, 3.4rem); }
.crumb { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; color: var(--gold-soft); margin-top: 10px; }
.crumb a { color: rgba(255,255,255,.75); }

/* ---- reveal on scroll ---- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width: 900px) {
  .nav-links { position: fixed; inset: 74px 0 auto 0; flex-direction: column; align-items: stretch;
    background: rgba(6,47,92,.98); backdrop-filter: blur(12px); padding: 16px 24px; gap: 4px; display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .split, .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .split.rev .split-media { order: 0; }
  .split-media::before { inset: 14px -14px -14px 14px; }
  .flow { grid-template-columns: 1fr 1fr; gap: 28px; }
  .flow::before { display: none; }
  .cards, .gallery { grid-template-columns: 1fr; columns: 1; }
  .cta { padding: 40px 24px; }
  .section { padding: 64px 0; }
}
@media (max-width: 620px) {
  .cards { grid-template-columns: 1fr; }
  .gallery { columns: 2; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-bg img, .facts-track { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}