/* ============================================================
   Feuangbenjara Plants — stylesheet
   Layers: tokens → reset → primitives → layout → components
   ============================================================ */

/* ── Design tokens ───────────────────────────────────────── */
:root {
  /* Brand greens */
  --green-950: #14291b;
  --green-900: #1d3f28;
  --green-800: #275434;
  --green-700: #2f6b3c;
  --green-600: #4c8f4f;
  --green-400: #8cc47f;
  --green-300: #a9d5a2;
  --green-200: #c7e6c1;
  --green-100: #e2f1de;
  --green-50:  #f1f8ef;

  /* Neutrals & accents */
  --cream:  #faf8f2;
  --sand:   #efeadd;
  --ink:    #16211a;
  --muted:  #5c6d60;
  --line:   #dfe6da;
  --accent: #e07a3f;

  /* Semantic */
  --bg: var(--cream);
  --surface: #ffffff;
  --text: var(--ink);
  --text-soft: var(--muted);
  --brand: var(--green-700);
  --brand-strong: var(--green-800);

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Outfit", "Noto Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-thai: "Noto Sans Thai", "Outfit", system-ui, sans-serif;

  --step--1: clamp(0.86rem, 0.83rem + 0.15vw, 0.94rem);
  --step-0:  clamp(1rem, 0.96rem + 0.2vw, 1.09rem);
  --step-1:  clamp(1.18rem, 1.1rem + 0.4vw, 1.4rem);
  --step-2:  clamp(1.42rem, 1.25rem + 0.8vw, 1.9rem);
  --step-3:  clamp(1.75rem, 1.4rem + 1.6vw, 2.75rem);
  --step-4:  clamp(2.25rem, 1.6rem + 3vw, 4.25rem);

  /* Space & shape */
  --gutter: clamp(1.15rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 8vw, 7rem);
  --wrap: 1180px;
  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-pill: 999px;

  --shadow-sm: 0 1px 2px rgb(20 41 27 / .06), 0 2px 8px rgb(20 41 27 / .05);
  --shadow-md: 0 10px 24px -12px rgb(20 41 27 / .28), 0 2px 6px rgb(20 41 27 / .06);
  --shadow-lg: 0 28px 60px -28px rgb(20 41 27 / .38);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ── Reset & base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

:lang(th) { font-family: var(--font-thai); line-height: 1.8; }

img, svg, video { display: block; max-width: 100%; }
a { color: inherit; }
button, input, textarea { font: inherit; color: inherit; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.12; letter-spacing: -0.015em; text-wrap: balance; }
p { text-wrap: pretty; }

:focus-visible {
  outline: 3px solid var(--green-700);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 50%; top: 0; translate: -50% -120%;
  z-index: 100; padding: .7rem 1.2rem; border-radius: 0 0 var(--r-sm) var(--r-sm);
  background: var(--green-800); color: #fff; text-decoration: none;
  transition: translate .2s var(--ease);
}
.skip-link:focus { translate: -50% 0; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ── Layout primitives ───────────────────────────────────── */
.wrap {
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
}

.section { padding-block: var(--section-y); }

/* Keep anchor targets clear of the sticky header. */
:target, section[id] { scroll-margin-top: 88px; }

.section--band {
  background: linear-gradient(180deg, var(--green-100), var(--green-50));
  border-block: 1px solid var(--green-200);
}

.section__head { max-width: 46ch; margin-bottom: clamp(2rem, 4vw, 3.25rem); }
.section__head--center { margin-inline: auto; text-align: center; }
.section__title { font-size: var(--step-3); color: var(--brand-strong); }
.section__sub { margin-top: .75rem; color: var(--text-soft); font-size: var(--step-1); font-weight: 300; }

.eyebrow {
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--green-600);
  margin-bottom: .6rem;
}

/* ── Buttons & links ─────────────────────────────────────── */
.btn {
  --btn-bg: var(--green-700);
  --btn-fg: #fff;
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 500; text-decoration: none; cursor: pointer;
  transition: background-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}
.btn:hover { background: var(--green-800); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }
.btn--ghost { background: transparent; color: var(--brand-strong); border-color: var(--green-300); }
.btn--ghost:hover { background: var(--green-100); color: var(--brand-strong); }
.btn--sm { padding: .55rem 1.1rem; font-size: var(--step--1); }

.link-arrow {
  display: inline-flex; align-items: center; gap: .4rem;
  margin-top: 1rem;
  font-weight: 500; font-size: var(--step--1);
  color: var(--brand); text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--brand) 35%, transparent);
  padding-bottom: 2px;
  transition: gap .2s var(--ease), border-color .2s var(--ease);
}
.link-arrow::after { content: "→"; transition: transform .2s var(--ease); }
.link-arrow:hover { gap: .65rem; border-color: var(--brand); }

/* ── Header ──────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--cream) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.site-header.is-stuck { border-color: var(--line); box-shadow: var(--shadow-sm); }

.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  min-height: 72px;
}

.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand__mark { width: 30px; height: 30px; fill: var(--green-600); flex: none; }
.brand__text {
  font-family: var(--font-display); font-weight: 600; line-height: 1.05;
  font-size: 1.05rem; color: var(--brand-strong);
  display: flex; flex-direction: column;
}
.brand__text span { color: var(--green-600); }
.brand--light .brand__text { color: #fff; }
.brand--light .brand__text span { color: var(--green-300); }
.brand--light .brand__mark { fill: var(--green-300); }

.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2rem); }
.site-nav ul { display: flex; gap: clamp(1rem, 2.2vw, 1.9rem); list-style: none; padding: 0; }
/* Scoped to `ul a` so the Contact CTA keeps its own .btn colours. */
.site-nav ul a {
  text-decoration: none; font-size: var(--step--1); font-weight: 500; color: var(--text-soft);
  padding-block: .35rem; position: relative;
  transition: color .2s var(--ease);
}
.site-nav ul a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--green-600); border-radius: 2px;
  transition: right .25s var(--ease);
}
.site-nav ul a:hover, .site-nav ul a.is-active { color: var(--brand-strong); }
.site-nav ul a:hover::after, .site-nav ul a.is-active::after { right: 0; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px; padding: 0;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--surface); cursor: pointer;
  place-items: center;
}
.nav-toggle__bars, .nav-toggle__bars::before, .nav-toggle__bars::after {
  content: ""; display: block; width: 20px; height: 2px; border-radius: 2px;
  background: var(--brand-strong);
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before { position: absolute; top: -6px; }
.nav-toggle__bars::after  { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────── */
.hero { padding-block: clamp(2rem, 5vw, 4.5rem) var(--section-y); }
.hero__inner {
  display: grid; gap: clamp(1.75rem, 4vw, 3.5rem);
  grid-template-columns: minmax(0, .82fr) minmax(0, 1fr);
  align-items: center;
}
.hero__art {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 13 / 16;
}
.hero__art svg { width: 100%; height: 100%; }

.hero__title { font-size: var(--step-4); color: var(--brand-strong); }
.hero__title span { color: var(--green-600); }
.lede {
  margin-top: 1.15rem; max-width: 46ch;
  font-size: var(--step-1); font-weight: 300; color: var(--text-soft);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

.stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem; margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.5rem; border-top: 1px solid var(--line);
}
.stats dt { font-size: var(--step--1); color: var(--text-soft); }
.stats dd {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 1.05rem + 1vw, 1.75rem);
  color: var(--brand);
  margin-top: .15rem;
  white-space: nowrap;
}

/* ── Cards (offerings) ───────────────────────────────────── */
.cards {
  display: grid; gap: clamp(1.25rem, 2.5vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15.5rem), 1fr));
  list-style: none; padding: 0;
}
.card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--green-300); }
.card__art, .card > [class*="art--"] { aspect-ratio: 16 / 10; overflow: hidden; }
.card svg { width: 100%; height: 100%; }
.card__body { padding: clamp(1.25rem, 2.4vw, 1.75rem); display: flex; flex-direction: column; flex: 1; }
.card__body h3 { font-size: var(--step-2); color: var(--brand-strong); margin-bottom: .5rem; }
.card__body p { color: var(--text-soft); font-weight: 300; }
.card__body strong { font-weight: 500; color: var(--text); }
.card__body .link-arrow { margin-top: auto; align-self: flex-start; padding-top: 1rem; }

/* ── Split sections ──────────────────────────────────────── */
.split {
  display: grid; gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  align-items: center;
}
.split__art {
  border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 5 / 4;
}
.split__art svg { width: 100%; height: 100%; }
.split--reverse .split__art { order: -1; }

.feature-list { list-style: none; padding: 0; margin-top: 1.75rem; display: grid; gap: 1.1rem; }
.feature-list li {
  display: grid; grid-template-columns: 46px 1fr; gap: 1rem; align-items: start;
  padding: 1rem 1.15rem;
  background: color-mix(in srgb, #fff 72%, transparent);
  border: 1px solid var(--green-200);
  border-radius: var(--r-md);
  transition: transform .25s var(--ease), background-color .25s var(--ease);
}
.feature-list li:hover { transform: translateX(4px); background: #fff; }
.feature-list__icon { width: 46px; height: 46px; fill: var(--green-600); }
.feature-list h3 { font-size: var(--step-1); color: var(--brand-strong); }
.feature-list p { color: var(--text-soft); font-size: var(--step--1); font-weight: 300; }

.check-list { list-style: none; padding: 0; margin-top: 1.5rem; display: grid; gap: .9rem; }
.check-list li { display: grid; grid-template-columns: 26px 1fr; gap: .85rem; align-items: start; color: var(--text-soft); }
.check-list li::before {
  content: "✓";
  display: grid; place-items: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--green-600); color: #fff;
  font-size: .8rem; font-weight: 600;
}

/* ── Timeline ────────────────────────────────────────────── */
/* Five equal columns so the connector line spans one unbroken row;
   collapses to a vertical rail below 860px. */
.timeline {
  list-style: none; padding: 0;
  display: grid; gap: clamp(.75rem, 1.6vw, 1.25rem);
  grid-template-columns: repeat(5, minmax(0, 1fr));
  position: relative;
  margin-top: 2.4rem; /* room for the badges that hang above each card */
}
.timeline::before {
  content: ""; position: absolute; inset-inline: 6%; top: 34px; height: 2px;
  background: repeating-linear-gradient(90deg, var(--green-300) 0 10px, transparent 10px 20px);
  z-index: 0;
}
.timeline__step {
  position: relative; z-index: 1;
  padding: 1.5rem 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: center;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.timeline__step:hover { transform: translateY(-5px); border-color: var(--green-400); box-shadow: var(--shadow-md); }
.timeline__num {
  display: grid; place-items: center;
  width: 42px; height: 42px; margin: -2.4rem auto .85rem;
  border-radius: 50%;
  background: var(--green-700); color: #fff;
  font-family: var(--font-display); font-size: .95rem;
  box-shadow: 0 0 0 6px var(--cream);
}
.timeline__step h3 { font-size: var(--step--1); text-transform: uppercase; letter-spacing: .07em; color: var(--brand-strong); }
.timeline__step p { margin-top: .4rem; font-size: var(--step--1); color: var(--text-soft); font-weight: 300; }

@media (max-width: 860px) {
  .timeline { grid-template-columns: 1fr; gap: 1rem; margin-top: 0; }
  .timeline::before { inset-inline: auto; left: 21px; top: 0; bottom: 0; width: 2px; height: auto;
    background: repeating-linear-gradient(180deg, var(--green-300) 0 10px, transparent 10px 20px); }
  .timeline__step { text-align: left; padding: 1.25rem 1.25rem 1.25rem 4.25rem; }
  .timeline__num { position: absolute; left: 0; top: 1.15rem; margin: 0; }
}

/* ── Next steps ──────────────────────────────────────────── */
.steps { list-style: none; padding: 0; display: grid; gap: 1rem; }
.steps__item {
  display: grid; gap: clamp(.75rem, 2vw, 2rem);
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  align-items: center;
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  background: var(--green-100);
  border: 1px solid var(--green-200);
  border-radius: var(--r-lg);
  transition: background-color .3s var(--ease), transform .3s var(--ease);
}
.steps__item:hover { background: var(--green-200); transform: translateX(4px); }
.steps__label { display: flex; align-items: center; gap: 1rem; }
.steps__num {
  display: grid; place-items: center; flex: none;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--green-700); color: #fff;
  font-family: var(--font-display);
}
.steps__label h3 { font-size: var(--step-2); color: var(--brand-strong); }
.steps__detail { border-left: 2px solid var(--green-300); padding-left: clamp(1rem, 2vw, 1.5rem); }
.steps__kicker { font-weight: 600; font-size: var(--step--1); color: var(--brand-strong); margin-bottom: .35rem; }
.steps__detail ul { margin: 0; padding-left: 1.1rem; color: var(--text-soft); font-size: var(--step--1); }

@media (max-width: 640px) {
  .steps__item { grid-template-columns: 1fr; }
  .steps__detail { border-left: 0; border-top: 2px solid var(--green-300); padding-left: 0; padding-top: 1rem; }
}

/* ── Contact ─────────────────────────────────────────────── */
.contact { background: linear-gradient(180deg, var(--cream) 0%, var(--green-100) 100%); }
.contact__grid {
  display: grid; gap: clamp(1.5rem, 4vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  align-items: start;
}
.contact__cards { list-style: none; padding: 0; display: grid; gap: 1rem; }
.contact__cards li {
  display: grid; gap: .55rem; justify-items: center;
  background: var(--surface);
  border: 1px solid var(--green-200);
  border-radius: var(--r-md);
  padding: 1.25rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.contact__cards a {
  color: var(--brand-strong); font-size: var(--step-1); text-decoration: none;
  border-bottom: 1px solid var(--green-300);
  overflow-wrap: anywhere;
}
.contact__cards a:hover { border-color: var(--brand); }
.chip {
  padding: .25rem .9rem; border-radius: var(--r-pill);
  background: var(--green-200); color: var(--brand-strong);
  font-size: var(--step--1); font-weight: 500;
}

.contact__form {
  display: grid; gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--green-200);
  border-radius: var(--r-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow-md);
}
.field { display: grid; gap: .4rem; }
.field label { font-size: var(--step--1); font-weight: 500; color: var(--brand-strong); }
.field input, .field textarea {
  width: 100%; padding: .8rem 1rem;
  border: 1px solid var(--line); border-radius: var(--r-sm);
  background: var(--green-50);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.field input:focus, .field textarea:focus { background: #fff; border-color: var(--green-600); }
.field textarea { resize: vertical; min-height: 7rem; }
.field__error { color: #a4361f; font-size: var(--step--1); }
.field[data-invalid] input, .field[data-invalid] textarea { border-color: #c0563a; background: #fdf4f1; }
.form-status:not(:empty) {
  padding: .75rem 1rem; border-radius: var(--r-sm);
  background: var(--green-100); color: var(--brand-strong); font-size: var(--step--1);
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer { background: var(--green-950); color: var(--green-100); padding-block: clamp(2.5rem, 5vw, 4rem); }
.site-footer__inner { display: grid; gap: 1.75rem; justify-items: center; text-align: center; }
.site-footer nav ul { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 1.75rem; list-style: none; padding: 0; }
.site-footer a { color: var(--green-200); text-decoration: none; font-size: var(--step--1); }
.site-footer a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.site-footer__legal { font-size: var(--step--1); color: color-mix(in srgb, var(--green-200) 70%, transparent); }

/* ── Scroll reveal ───────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ── Responsive: nav + hero ──────────────────────────────── */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__art { aspect-ratio: 16 / 11; order: -1; }

  .nav-toggle { display: grid; }
  .site-nav {
    position: absolute; inset: 100% var(--gutter) auto;
    flex-direction: column; align-items: stretch; gap: 1rem;
    padding: 1.25rem;
    background: var(--surface);
    border: 1px solid var(--line); border-radius: var(--r-md);
    box-shadow: var(--shadow-lg);
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav ul { flex-direction: column; gap: .25rem; }
  .site-nav ul a { display: block; padding: .6rem .75rem; font-size: var(--step-0); border-radius: var(--r-sm); }
  /* A full-width underline reads as a divider in a stacked menu — tint instead. */
  .site-nav ul a::after { content: none; }
  .site-nav ul a.is-active { background: var(--green-100); color: var(--brand-strong); }
  .site-nav .btn { justify-content: center; }
}

@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .stats > :last-child { grid-column: span 2; }
}

/* ── Print ───────────────────────────────────────────────── */
@media print {
  .site-header, .nav-toggle, .hero__actions, .contact__form { display: none; }
  body { background: #fff; }
  .reveal { opacity: 1; transform: none; }
}