/* Mầm website: brand tokens mirror lib/core/theme/tokens.dart ("Mầm xanh"). */
:root {
  --c-bg: #fbfaf7;
  --c-surface: #ffffff;
  --c-tint: #e3efeb;
  --c-text: #1d2b27;
  --c-text-2: #4f5f5a;
  --c-line: #dfe6e3;
  --c-accent: #2f6b5e;
  --c-accent-deep: #1e4a40;
  --c-on-accent: #fbfaf7;
  --c-warn-bg: #fdf1ec;
  --c-warn: #9a3b1f;
  --shadow: 0 18px 40px -24px rgb(30 74 64 / 0.35);

  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lead: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
  --text-h2: clamp(1.625rem, 1.3rem + 1.4vw, 2.375rem);
  --text-hero: clamp(2.25rem, 1.5rem + 3.2vw, 3.75rem);

  --radius: 16px;
  --radius-pill: 999px;
  --space-section: clamp(4rem, 3rem + 4vw, 7.5rem);
  --wrap: 1120px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Scripts Be Vietnam Pro does not cover. */
html[lang="hi"] { --font: "Noto Sans Devanagari", "Be Vietnam Pro", system-ui, sans-serif; }
html[lang="ar"] { --font: "Noto Sans Arabic", "Be Vietnam Pro", system-ui, sans-serif; }
/* Arabic letters join; negative tracking breaks the joins. */
html[lang="ar"] h1, html[lang="ar"] h2, html[lang="ar"] .doc h1 { letter-spacing: 0; line-height: 1.35; }
html[lang="hi"] h1, html[lang="hi"] h2 { letter-spacing: 0; line-height: 1.35; }

@media (prefers-color-scheme: dark) {
  :root {
    --c-bg: #111a17;
    --c-surface: #17231f;
    --c-tint: #1c2d28;
    --c-text: #e9efec;
    --c-text-2: #a9bab4;
    --c-line: #2a3b36;
    --c-accent: #9cc3b8;
    --c-accent-deep: #d5e8e2;
    --c-on-accent: #10201b;
    --c-warn-bg: #2e1d17;
    --c-warn: #f2b7a1;
    --shadow: 0 18px 40px -24px rgb(0 0 0 / 0.6);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-bg);
}
img, svg { display: block; max-width: 100%; }
a { color: var(--c-accent); text-underline-offset: 3px; }
a:hover { color: var(--c-accent-deep); }
:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(100% - 2rem, var(--wrap)); margin-inline: auto; }
.skip { position: absolute; inset-inline-start: -999px; }
.skip:focus { inset-inline-start: 1rem; top: 1rem; background: var(--c-surface); padding: 0.5rem 1rem; z-index: 10; }

/* Header */
.site-header { border-bottom: 1px solid var(--c-line); background: var(--c-bg); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1.125rem; color: var(--c-text); text-decoration: none; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav { display: flex; gap: 1.5rem; font-size: 0.9375rem; }
.nav a { color: var(--c-text-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--c-text); }

/* Language menu */
.lang-menu { position: relative; }
.lang-menu summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 0.35rem; color: var(--c-text-2); font-weight: 600; font-size: 0.875rem; padding: 0.35rem 0.6rem; border-radius: var(--radius-pill); box-shadow: inset 0 0 0 1px var(--c-line); }
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu[open] summary { color: var(--c-text); background: var(--c-tint); }
.lang-menu ul { position: absolute; inset-inline-end: 0; top: calc(100% + 0.5rem); margin: 0; padding: 0.4rem; list-style: none; min-width: 10rem; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: 12px; box-shadow: var(--shadow); z-index: 20; }
.lang-menu li a { display: block; padding: 0.55rem 0.75rem; border-radius: 8px; color: var(--c-text); text-decoration: none; }
.lang-menu li a:hover { background: var(--c-tint); }
.lang-menu li a[aria-current="true"] { font-weight: 600; color: var(--c-accent); }
.nav { align-items: center; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 1.4rem; border-radius: var(--radius-pill);
  font: 600 0.9875rem/1 var(--font); text-decoration: none; white-space: nowrap;
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn-primary { background: var(--c-accent); color: var(--c-on-accent); }
.btn-primary:hover { background: var(--c-accent-deep); color: var(--c-on-accent); }
.btn-ghost { color: var(--c-accent); box-shadow: inset 0 0 0 1.5px var(--c-accent); }
.btn-ghost:hover { background: var(--c-tint); }

/* Hero */
.hero { padding-block: clamp(2.5rem, 2rem + 4vw, 5.5rem) var(--space-section); }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(2rem, 4vw, 4.5rem); align-items: center; }
.hero h1 { font-size: var(--text-hero); line-height: 1.12; letter-spacing: -0.025em; margin: 0 0 1.25rem; max-width: 14ch; }
.hero p { font-size: var(--text-lead); color: var(--c-text-2); margin: 0 0 2rem; max-width: 34ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
/* Sections */
section { padding-block: var(--space-section); }
.section-tint { background: var(--c-tint); }
h2 { font-size: var(--text-h2); line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 1rem; max-width: 22ch; }
.lead { font-size: var(--text-lead); color: var(--c-text-2); max-width: 60ch; margin: 0 0 2.5rem; }

/* Privacy promise */
.promise { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.promise-list { display: grid; gap: 1.5rem; margin: 0; padding: 0; list-style: none; }
.promise-list li { display: grid; grid-template-columns: 2rem 1fr; gap: 0.75rem; }
.promise-list i { color: var(--c-accent); font-size: 1.5rem; line-height: 1.6; }
.promise-list strong { display: block; }
.promise-list span { color: var(--c-text-2); }

/* Pricing */
.plans { display: grid; grid-template-columns: 1fr 1.3fr; gap: 1rem; max-width: 880px; }
.plan { border-radius: var(--radius); padding: 2rem; border: 1px solid var(--c-line); background: var(--c-surface); }
.plan h3 { margin: 0 0 0.25rem; font-size: 1.25rem; }
.plan .price { font-size: 1.75rem; font-weight: 700; margin: 0.5rem 0 1rem; letter-spacing: -0.02em; }
.plan .price small { font-size: 0.9375rem; font-weight: 500; color: var(--c-text-2); }
.plan ul { margin: 0; padding-inline-start: 1.2rem; color: var(--c-text-2); }
.plan li + li { margin-top: 0.35rem; }
.plan-plus { border: 2px solid var(--c-accent); box-shadow: var(--shadow); }
.note { font-size: 0.875rem; color: var(--c-text-2); margin-top: 1.25rem; max-width: 70ch; }

/* Disclaimer band */
.disclaimer { padding-block: 0 var(--space-section); }
.disclaimer-box { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; background: var(--c-warn-bg); border-radius: var(--radius); padding: 1.5rem; }
.disclaimer-box i { font-size: 1.75rem; color: var(--c-warn); }
.disclaimer-box p { margin: 0; }

/* Legal / document pages */
.doc { padding-block: clamp(2.5rem, 2rem + 3vw, 4.5rem) var(--space-section); }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: clamp(2rem, 1.6rem + 1.8vw, 2.75rem); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.5rem; }
.doc .meta { color: var(--c-text-2); margin: 0 0 2.5rem; }
.doc h2 { font-size: 1.375rem; margin: 2.75rem 0 0.75rem; max-width: none; }
.doc h3 { font-size: 1.0625rem; margin: 1.5rem 0 0.5rem; }
.doc ul { padding-inline-start: 1.25rem; }
.doc li + li { margin-top: 0.4rem; }
.doc table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; margin: 1rem 0; }
.doc th, .doc td { text-align: start; vertical-align: top; padding: 0.75rem; border-bottom: 1px solid var(--c-line); }
.doc th { color: var(--c-text-2); font-weight: 600; }
.table-scroll { overflow-x: auto; }
.callout { background: var(--c-tint); border-radius: var(--radius); padding: 1.25rem 1.5rem; margin: 1.5rem 0; }
.callout p { margin: 0; }
.callout p + p { margin-top: 0.5rem; }
.callout-warn { background: var(--c-warn-bg); }

/* FAQ */
.faq details { border-bottom: 1px solid var(--c-line); padding-block: 1.1rem; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--c-accent); font-size: 1.4rem; line-height: 1; transition: transform 0.25s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0.75rem 0 0; color: var(--c-text-2); }

/* Footer */
.site-footer { border-top: 1px solid var(--c-line); padding-block: 2.5rem; font-size: 0.9375rem; color: var(--c-text-2); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.site-footer a { color: var(--c-text-2); }

/* Entry motion: gentle rise that sets reading order. Off for reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  .rise { animation: rise 0.8s var(--ease) both; }
  .rise-2 { animation-delay: 0.08s; }
  .rise-3 { animation-delay: 0.16s; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* Mobile collapse */
@media (max-width: 767px) {
  .nav { gap: 1rem; font-size: 0.875rem; }
  .nav .nav-optional { display: none; }
  .hero .wrap, .promise, .plans { grid-template-columns: 1fr; }
}