/* blümbox app.blumbox.in.th — shared design system
   Brand-preserving: green palette, Thai-first typography. Mobile-first, AA contrast. */

:root {
  --green: #6abc4b;
  --green-deep: #2f6a23;   /* AA text on white & button bg with white text */
  --green-soft: #eaf4e3;
  --ink: #14241a;          /* body text */
  --muted: #45564c;        /* secondary text (AA on white) */
  --line: rgba(20, 35, 26, 0.12);
  --bg: #f4f8f0;
  --card: #ffffff;
  --shadow: 0 18px 40px rgba(20, 35, 26, 0.10);
  --radius: 16px;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Sukhumvit Set", "Noto Sans Thai", "Avenir Next", "Helvetica Neue", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

a { color: var(--green-deep); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--green-deep); color: #fff;
  padding: 10px 16px; border-radius: 0 0 10px 0; z-index: 100;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 3px solid var(--green-deep); outline-offset: 2px; border-radius: 6px; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 18px; min-height: 64px; }
.nav__brand { display: inline-flex; align-items: center; }
.nav__brand img { height: 30px; width: auto; display: block; }
.nav__links { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; align-items: center; }
.nav__links a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 15px; }
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--green-deep); text-decoration: underline; }
.nav__cta {
  background: var(--green-deep); color: #fff !important; padding: 9px 16px; border-radius: 999px;
  text-decoration: none; font-weight: 700;
}
.nav__cta:hover { background: #245018; }
.nav__toggle { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 999px; font-weight: 700; text-decoration: none;
  border: 2px solid transparent; cursor: pointer; font-size: 16px;
}
.btn--primary { background: var(--green-deep); color: #fff; }
.btn--primary:hover { background: #245018; }
.btn--ghost { background: #fff; color: var(--green-deep); border-color: var(--green-deep); }
.btn--ghost:hover { background: var(--green-soft); }

/* App store badges */
.store-buttons { display: flex; flex-wrap: wrap; gap: 16px; }
.store-link {
  display: inline-flex; border-radius: 14px; overflow: hidden;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12); transition: transform .15s ease;
}
.store-link:hover { transform: translateY(-2px); }
.store-link img { display: block; height: 52px; width: auto; }

/* ---------- Sections ---------- */
main { display: block; }
.section { padding: 56px 0; }
.section--tint { background: var(--green-soft); }
.section h2 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.2; margin: 0 0 14px; letter-spacing: -0.02em; }
.section p { max-width: 70ch; color: var(--muted); }
.section .lead { font-size: 19px; color: var(--ink); }
.eyebrow { color: var(--green-deep); font-weight: 800; letter-spacing: .04em; text-transform: uppercase; font-size: 13px; margin: 0 0 8px; }

/* Hero */
.hero { padding: 48px 0 40px; }
.hero__grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(30px, 5vw, 50px); line-height: 1.1; letter-spacing: -0.03em; margin: 6px 0 16px; }
.hero h1 .brand { color: var(--green-deep); }
.hero__lead { font-size: clamp(17px, 2vw, 20px); color: var(--ink); max-width: 60ch; }
.hero__cta { margin: 22px 0 10px; }
.hero__media { display: flex; justify-content: center; }
.hero__media img { width: min(300px, 80%); filter: drop-shadow(0 18px 30px rgba(0,0,0,.22)); }

/* Cards / grids */
.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); }

/* Step list */
.steps { counter-reset: step; display: grid; gap: 16px; padding: 0; list-style: none; margin: 0; }
.steps li { position: relative; padding-left: 56px; }
.steps li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 38px; height: 38px; border-radius: 50%;
  background: var(--green-deep); color: #fff; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.steps li h3 { margin: 4px 0 4px; font-size: 18px; }
.steps li p { margin: 0; color: var(--muted); }

/* FAQ */
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 4px 18px; margin-bottom: 12px; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none; font-size: 17px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; float: right; color: var(--green-deep); font-weight: 800; }
.faq details[open] summary::after { content: "－"; }
.faq details p { margin: 0 0 14px; color: var(--muted); }

/* Breadcrumb */
.breadcrumb { font-size: 14px; color: var(--muted); padding: 14px 0 0; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer { background: #11231a; color: #d8e6db; padding: 44px 0 28px; margin-top: 24px; }
.site-footer a { color: #d8e6db; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; color: #fff; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
.footer__grid h4 { color: #fff; font-size: 15px; margin: 0 0 12px; }
.footer__links { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; font-size: 15px; }
.footer__brand img { height: 28px; margin-bottom: 12px; }
.footer__legal { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 26px; padding-top: 18px; font-size: 13px; color: #9fb3a6; }

/* CTA band */
.cta-band { background: var(--green-deep); color: #fff; border-radius: var(--radius); padding: 36px; text-align: center; }
.cta-band h2 { color: #fff; margin-top: 0; }
.cta-band .store-buttons { justify-content: center; margin-top: 18px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; text-align: center; }
  .hero__media { order: -1; }
  .hero .store-buttons, .hero__cta { justify-content: center; }
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .nav__links { display: none; width: 100%; flex-direction: column; align-items: flex-start; gap: 10px; padding: 10px 0; }
  .nav__links.is-open { display: flex; }
  .nav__toggle {
    display: inline-flex; margin-left: auto; background: transparent; border: 1px solid var(--line);
    border-radius: 10px; padding: 8px 12px; font-size: 20px; line-height: 1; cursor: pointer;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}