/* Mahina marketing site — hand-crafted, zero third-party, zero cookies.
   Personality: calm, capable, private. Crescent-moon motif; honest, plain. */

@import url("tokens.css");

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--fs-body);
  line-height: var(--lh);
  color: var(--on-bg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--motion-base) var(--ease), color var(--motion-base) var(--ease);
}
/* Hindi pages add lang="hi"; widen line-height + prefer Devanagari face. */
:lang(hi) body, body:lang(hi) {
  font-family: "Noto Sans Devanagari", -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Noto Sans", sans-serif;
  line-height: var(--lh-deva);
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.15; margin: 0 0 var(--s16); font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: var(--fs-display); letter-spacing: -0.02em; }
h2 { font-size: clamp(26px, 3.5vw, 38px); }
h3 { font-size: var(--fs-title); }
p { margin: 0 0 var(--s16); max-width: 68ch; }
.muted { color: var(--on-surface-variant); }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: var(--fs-label-sm);
  font-weight: 600; color: var(--primary); margin: 0 0 var(--s12); }

/* ---- Focus + skip link (a11y) ---- */
:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--primary); color: var(--on-primary);
  padding: var(--s8) var(--s16); border-radius: 0 0 var(--r-sm) 0; z-index: 100; }
.skip:focus { left: 0; }

/* ---- Layout ---- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--s24); }
.section { padding-block: clamp(var(--s48), 9vw, var(--s96)); }
.section--tint { background: var(--surface-variant); }
.grid { display: grid; gap: var(--s24); }
@media (min-width: 720px) { .grid-2 { grid-template-columns: 1fr 1fr; } .grid-3 { grid-template-columns: repeat(3,1fr); } }
.center { text-align: center; }
.center p { margin-inline: auto; }
.stack > * + * { margin-top: var(--s16); }

/* ---- Buttons ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--s8);
  min-height: var(--tap); padding: 0 var(--s24); border-radius: var(--r-pill);
  font-weight: 600; font-size: var(--fs-body); border: 1.5px solid transparent; cursor: pointer;
  transition: transform var(--motion-fast) var(--ease), background var(--motion-fast) var(--ease),
    box-shadow var(--motion-fast) var(--ease); text-decoration: none; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--primary); color: var(--on-primary); }
.btn--primary:hover { box-shadow: var(--shadow-1); }
.btn--ghost { background: transparent; color: var(--primary); border-color: var(--outline); }
.btn--ghost:hover { background: var(--surface-variant); }
.btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; transform: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--s12); }
.center .btn-row { justify-content: center; }

/* ---- Header / nav ---- */
.site-header { position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--outline-variant); }
.nav { display: flex; align-items: center; gap: var(--s16); min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: var(--s8); font-weight: 700;
  color: var(--brand-ink); }
.brand:hover { text-decoration: none; }
.brand .mark { width: 30px; height: 30px; }
.brand .word { font-size: var(--fs-title); letter-spacing: -0.01em; }
.nav .spacer { flex: 1; }
.nav-links { display: none; gap: var(--s8); align-items: center; }
.nav-links a { color: var(--on-surface-variant); padding: var(--s8) var(--s12); border-radius: var(--r-sm); font-weight: 500; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--on-surface); background: var(--surface-variant); text-decoration: none; }
.icon-btn { min-width: var(--tap); min-height: var(--tap); display: inline-flex; align-items: center;
  justify-content: center; background: transparent; border: 1px solid var(--outline); border-radius: var(--r-pill);
  color: var(--on-surface); cursor: pointer; }
.icon-btn:hover { background: var(--surface-variant); }
.lang-toggle a { padding: var(--s8) var(--s12); border-radius: var(--r-pill); font-weight: 600;
  border: 1px solid var(--outline); color: var(--on-surface-variant); }
.lang-toggle a[aria-current="true"] { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
@media (min-width: 900px) { .nav-links { display: flex; } }

/* ---- Hero ---- */
.hero { position: relative; overflow: hidden; padding-block: clamp(var(--s48), 8vw, var(--s96)); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(60% 50% at 85% -10%, color-mix(in srgb, var(--primary) 22%, transparent), transparent 70%),
    radial-gradient(50% 40% at 0% 110%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%); }
.hero-grid { display: grid; gap: var(--s48); align-items: center; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.05fr .95fr; } }
.hero h1 .accent { color: var(--primary); }
.hero .lede { font-size: clamp(var(--fs-body), 2.2vw, var(--fs-title)); color: var(--on-surface-variant); }

/* ---- Cards ---- */
.card { background: var(--surface); border: 1px solid var(--outline-variant); border-radius: var(--r-card);
  padding: var(--s24); box-shadow: var(--shadow-1); }
.card h3 { margin-bottom: var(--s8); }
.card .ico { width: 28px; height: 28px; color: var(--primary); margin-bottom: var(--s12); }
.feature p { margin-bottom: 0; color: var(--on-surface-variant); }

/* Chips row */
.chips { display: flex; flex-wrap: wrap; gap: var(--s8); list-style: none; padding: 0; margin: 0; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px var(--s12); border-radius: var(--r-pill);
  background: var(--surface-variant); color: var(--on-surface-variant); font-size: var(--fs-body-sm); font-weight: 500; }

/* ---- Prediction band (the app's signature honesty element) ---- */
.predband { background: var(--surface); border: 1px solid var(--outline-variant); border-radius: var(--r-card);
  padding: var(--s24); box-shadow: var(--shadow-1); max-width: 420px; }
.predband .row { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--s12); }
.predband .confidence { font-size: var(--fs-label-sm); font-weight: 600; color: var(--phase-luteal);
  background: var(--phase-luteal-tint); padding: 4px 10px; border-radius: var(--r-pill); }
.predband .bar { height: 14px; border-radius: var(--r-pill); position: relative;
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--phase-menstrual) 12%, transparent),
    var(--phase-menstrual) 45%, var(--phase-menstrual) 55%,
    color-mix(in srgb, var(--phase-menstrual) 12%, transparent)); }
.predband .scale { display: flex; justify-content: space-between; font-size: var(--fs-label-sm);
  color: var(--on-surface-variant); margin-top: var(--s8); }
.predband .note { font-size: var(--fs-body-sm); color: var(--on-surface-variant); margin: var(--s12) 0 0; }

/* Phone mock frame */
.phone { width: min(300px, 78vw); aspect-ratio: 9 / 19; margin-inline: auto;
  background: var(--surface); border: 2px solid var(--outline); border-radius: 34px;
  box-shadow: var(--shadow-2); padding: var(--s16); display: flex; flex-direction: column; gap: var(--s12); }
.phone .status { height: 18px; }

/* Privacy commitments list */
.promises { list-style: none; margin: 0; padding: 0; counter-reset: p; }
.promises li { position: relative; padding: var(--s16) var(--s16) var(--s16) 56px; border-radius: var(--r-card);
  background: var(--surface); border: 1px solid var(--outline-variant); margin-bottom: var(--s12); }
.promises li::before { counter-increment: p; content: counter(p); position: absolute; left: var(--s16); top: var(--s16);
  width: 28px; height: 28px; display: grid; place-items: center; border-radius: var(--r-pill);
  background: var(--primary-container); color: var(--on-primary-container); font-weight: 700; font-size: var(--fs-body-sm); }
.promises li strong { display: block; margin-bottom: 4px; }
.promises li p { margin: 0; color: var(--on-surface-variant); }

/* Notes / callouts */
.note-box { border-left: 4px solid var(--primary); background: var(--surface-variant);
  padding: var(--s16); border-radius: 0 var(--r-md) var(--r-md) 0; font-size: var(--fs-body-sm); }
.note-box.warn { border-left-color: var(--accent); }

/* FAQ */
.faq details { border: 1px solid var(--outline-variant); border-radius: var(--r-md); background: var(--surface);
  padding: var(--s16) var(--s24); margin-bottom: var(--s12); }
.faq summary { font-weight: 600; cursor: pointer; min-height: var(--tap); display: flex; align-items: center; }
.faq details[open] summary { margin-bottom: var(--s8); }

/* Legal (privacy / terms) */
.legal { max-width: 760px; }
.legal h2 { margin-top: var(--s32); }
.legal h3 { margin-top: var(--s24); }
.legal ul { padding-left: var(--s24); }
.legal li { margin-bottom: var(--s8); }

/* ---- Store badges (coming soon) ---- */
.store-badges { display: flex; flex-wrap: wrap; gap: var(--s12); align-items: center; }
.badge { display: inline-flex; align-items: center; gap: var(--s8); min-height: var(--tap);
  padding: 0 var(--s16); border-radius: var(--r-md); background: var(--brand-ink); color: var(--brand-white);
  font-weight: 600; opacity: .9; }
.badge small { display: block; font-size: 10px; font-weight: 500; opacity: .8; text-transform: uppercase; letter-spacing: .06em; }
.badge[aria-disabled="true"] { cursor: default; }
.badge .soon { font-size: 10px; background: var(--accent); color: var(--on-accent); padding: 2px 6px; border-radius: var(--r-pill); }

/* ---- Reveal on scroll (JS adds .in) ---- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity var(--motion-slow) var(--ease), transform var(--motion-slow) var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--outline-variant); background: var(--surface); margin-top: var(--s48); }
.footer-grid { display: grid; gap: var(--s32); padding-block: var(--s48); }
@media (min-width: 720px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.footer-grid h4 { font-size: var(--fs-body-sm); text-transform: uppercase; letter-spacing: .08em; color: var(--on-surface-variant); margin: 0 0 var(--s12); }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: var(--s8); }
.footer-grid a { color: var(--on-surface-variant); }
.footer-legal { border-top: 1px solid var(--outline-variant); padding-block: var(--s24); font-size: var(--fs-body-sm); color: var(--on-surface-variant); display: flex; flex-wrap: wrap; gap: var(--s8) var(--s24); justify-content: space-between; }

/* Utility */
.pill-note { display: inline-block; font-size: var(--fs-label-sm); font-weight: 600; color: var(--on-surface-variant);
  background: var(--surface-variant); border: 1px solid var(--outline-variant); padding: 4px 10px; border-radius: var(--r-pill); }
.hr { border: 0; border-top: 1px solid var(--outline-variant); margin-block: var(--s32); }
.lead-list { list-style: none; padding: 0; margin: 0; }
.lead-list li { display: flex; gap: var(--s12); align-items: flex-start; margin-bottom: var(--s12); }
.lead-list .tick { color: var(--success); flex: none; margin-top: 2px; }