/* ==========================================================================
   Mosa — marketing landing
   Brand system per docs: mosaic metaphor, navy-on-white, aurora hero.
   ========================================================================== */

:root {
  /* Ink + surfaces */
  --mosa-navy-950: #050B2B;
  --mosa-navy-800: #122044;
  --mosa-slate-600: #536079;
  --mosa-slate-400: #8A95AA;
  --mosa-bg: #F8FAFF;
  --mosa-surface: #FFFFFF;
  --mosa-border: #D9E3FF;

  /* Mosaic accents (from the logo tiles) */
  --mosa-purple: #6F3DFF;
  --mosa-blue: #276EF1;
  --mosa-deep-blue: #051B7A;
  --mosa-coral: #FF5752;
  --mosa-orange: #FF8A00;
  --mosa-teal: #009E7E;
  --mosa-mint: #67D1B4;
  --mosa-yellow: #FFB900;

  /* Layout scale */
  --maxw: 1280px;
  --r-btn: 24px;
  --r-card: 32px;
  --r-hero: 40px;

  --shadow-sm: 0 1px 2px rgba(5, 11, 43, .04), 0 8px 24px rgba(5, 11, 43, .06);
  --shadow-md: 0 2px 4px rgba(5, 11, 43, .05), 0 18px 48px rgba(5, 11, 43, .10);
  --shadow-lg: 0 30px 80px rgba(5, 11, 43, .18);

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

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--mosa-navy-950);
  background: var(--mosa-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv05" 1, "ss01" 1;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

img { display: block; max-width: 100%; }

:focus-visible {
  outline: 3px solid rgba(39, 110, 241, .35);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- Typography ---------- */
h1, h2, h3 { margin: 0; }

h1 {
  font-size: clamp(3.25rem, 7vw, 6.75rem);
  line-height: .94;
  letter-spacing: -0.06em;
  font-weight: 900;
}

h2 {
  font-size: clamp(2.25rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.045em;
  font-weight: 800;
}

p.lead {
  font-size: clamp(1.125rem, 1.6vw, 1.5rem);
  line-height: 1.55;
  color: var(--mosa-slate-600);
  margin: 0;
}

.shell { max-width: var(--maxw); margin: 0 auto; padding-inline: 80px; }
section { padding-block: 96px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 26px;
  border-radius: var(--r-btn);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
  will-change: transform;
}
.btn:hover { transform: scale(1.015); }
.btn:active { transform: scale(.99); }

.btn--primary { background: var(--mosa-yellow); color: var(--mosa-navy-950); box-shadow: 0 10px 26px rgba(255, 185, 0, .34); }
.btn--primary:hover { box-shadow: 0 14px 34px rgba(255, 185, 0, .46); }

.btn--ghost { background: var(--mosa-surface); color: var(--mosa-navy-950); border-color: var(--mosa-border); box-shadow: var(--shadow-sm); }
.btn--ghost:hover { border-color: #b9c8ff; }

.btn--dark { background: var(--mosa-navy-950); color: #fff; }
.btn--sm { padding: 11px 20px; font-size: .95rem; }

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(217, 227, 255, .8);
}
.header__row {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px 80px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 800; font-size: 1.32rem; letter-spacing: -.03em; }
.brand img { width: 34px; height: 34px; }
.nav { display: flex; gap: 30px; margin-inline: auto; }
.nav a { color: var(--mosa-slate-600); font-weight: 600; font-size: .98rem; transition: color .15s var(--ease); }
.nav a:hover { color: var(--mosa-navy-950); }
.header .btn { white-space: nowrap; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: 72px; padding-bottom: 64px; overflow: clip; }

/* Aurora atmosphere */
.aurora { position: absolute; inset: -10% -10% auto -10%; height: 760px; z-index: 0; pointer-events: none; filter: blur(60px); opacity: .55; }
.aurora span { position: absolute; border-radius: 50%; mix-blend-mode: multiply; animation: float 18s var(--ease) infinite; }
.aurora .b1 { width: 460px; height: 460px; left: 4%;  top: -40px; background: radial-gradient(circle at 30% 30%, var(--mosa-purple), transparent 62%); }
.aurora .b2 { width: 520px; height: 520px; left: 38%; top: -90px; background: radial-gradient(circle at 50% 40%, var(--mosa-blue), transparent 60%); animation-delay: -4s; }
.aurora .b3 { width: 380px; height: 380px; right: 8%; top: -10px; background: radial-gradient(circle at 60% 40%, var(--mosa-coral), transparent 62%); animation-delay: -8s; }
.aurora .b4 { width: 320px; height: 320px; right: 26%; top: 180px; background: radial-gradient(circle at 50% 50%, var(--mosa-mint), transparent 64%); animation-delay: -12s; }
@keyframes float { 0%, 100% { transform: translate3d(0,0,0) scale(1); } 50% { transform: translate3d(0,26px,0) scale(1.06); } }

.hero__grid {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1.18fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(111, 61, 255, .08);
  color: var(--mosa-purple);
  border: 1px solid rgba(111, 61, 255, .18);
  font-weight: 700; font-size: .82rem; letter-spacing: .01em;
  padding: 7px 14px; border-radius: 999px;
}
.eyebrow b { width: 7px; height: 7px; border-radius: 2px; background: var(--mosa-purple); }

.hero h1 { margin-top: 24px; }
.hero h1 .accent {
  background: linear-gradient(96deg, var(--mosa-purple), var(--mosa-blue) 42%, var(--mosa-coral));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { margin-top: 26px; max-width: 33ch; }
.hero__cta { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }

/* hero load reveal */
.reveal { opacity: 0; transform: translateY(16px); animation: rise .8s var(--ease) forwards; }
.d1 { animation-delay: .05s; } .d2 { animation-delay: .15s; } .d3 { animation-delay: .26s; }
.d4 { animation-delay: .38s; } .d5 { animation-delay: .5s; }
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

/* ---------- Product mockup ---------- */
.mock {
  background: var(--mosa-surface);
  border: 1px solid var(--mosa-border);
  border-radius: var(--r-hero);
  box-shadow: var(--shadow-lg);
  padding: 22px;
  display: grid;
  grid-template-columns: 1fr 188px;
  gap: 18px;
}
.mock__head { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.mock__title { font-weight: 800; font-size: 1.18rem; letter-spacing: -.02em; }
.mock__sub { color: var(--mosa-slate-400); font-size: .82rem; font-weight: 600; margin-top: 2px; }
.searchpill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--mosa-bg); border: 1px solid var(--mosa-border);
  border-radius: 999px; padding: 9px 15px; color: var(--mosa-slate-600);
  font-size: .82rem; font-weight: 600; white-space: nowrap;
}
.searchpill svg { width: 15px; height: 15px; color: var(--mosa-slate-400); }

.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tile {
  aspect-ratio: 1 / .82;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
  cursor: pointer;
}
.tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tile::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(255,255,255,.16), rgba(5,11,43,.14)); }
.tile span { position: absolute; left: 10px; bottom: 9px; z-index: 1; font-size: .62rem; font-weight: 700; color: rgba(255,255,255,.92); letter-spacing: .02em; }
.t-purple { background: var(--mosa-purple); } .t-blue { background: var(--mosa-blue); }
.t-coral { background: var(--mosa-coral); } .t-orange { background: var(--mosa-orange); }
.t-teal { background: var(--mosa-teal); } .t-mint { background: var(--mosa-mint); }
.t-yellow { background: var(--mosa-yellow); } .t-navy { background: var(--mosa-deep-blue); }
.t-mint span, .t-yellow span { color: var(--mosa-navy-950); }

.gov { background: var(--mosa-bg); border: 1px solid var(--mosa-border); border-radius: 22px; padding: 16px; }
.gov h4 { margin: 0 0 12px; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mosa-slate-400); font-weight: 800; }
.gov ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.gov li { display: flex; align-items: center; gap: 10px; font-size: .88rem; font-weight: 600; color: var(--mosa-navy-800); }
.dot { width: 9px; height: 9px; border-radius: 3px; flex: none; }
.gov li .meta { margin-left: auto; font-size: .68rem; font-weight: 700; color: var(--mosa-slate-400); }

/* ---------- Stats strip ---------- */
.stats { background: var(--mosa-navy-950); color: #fff; border-radius: var(--r-card); }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.stat .n { font-size: clamp(2rem, 3.4vw, 3rem); font-weight: 900; letter-spacing: -.04em; line-height: 1; }
.stat .n.tint-mint { color: var(--mosa-mint); } .stat .n.tint-yellow { color: var(--mosa-yellow); }
.stat .n.tint-coral { color: var(--mosa-coral); } .stat .n.tint-blue { color: #7FB0FF; }
.stat .l { margin-top: 9px; color: #9FA9C4; font-size: .92rem; font-weight: 500; }

/* ---------- Features ---------- */
.features__head { max-width: 22ch; margin-bottom: 48px; }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.card {
  background: var(--mosa-surface);
  border: 1px solid var(--mosa-border);
  border-radius: var(--r-card);
  padding: 34px;
  box-shadow: var(--shadow-sm);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #c5d3ff; }
.card__icon { width: 50px; height: 50px; border-radius: 15px; display: grid; place-items: center; margin-bottom: 20px; box-shadow: 0 8px 20px rgba(5,11,43,.14); }
.card__icon svg { width: 24px; height: 24px; color: #fff; }
.card h3 { font-size: 1.4rem; letter-spacing: -.025em; font-weight: 800; }
.card p { margin: 11px 0 0; color: var(--mosa-slate-600); font-size: 1.02rem; line-height: 1.55; }
.bg-purple { background: var(--mosa-purple); } .bg-blue { background: var(--mosa-blue); }
.bg-teal { background: var(--mosa-teal); } .bg-orange { background: var(--mosa-orange); }

/* ---------- CTA band ---------- */
.cta-band { position: relative; }
.cta-card {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, var(--mosa-navy-950), var(--mosa-deep-blue));
  color: #fff; border-radius: var(--r-hero);
  padding: 72px 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-card .mosaic-edge { position: absolute; inset: 0; opacity: .5; pointer-events: none; }
.cta-card h2 { max-width: 16ch; }
.cta-card p { color: #AEB8D4; margin: 14px 0 0; max-width: 42ch; font-size: 1.06rem; }

/* ---------- Footer ---------- */
.footer { padding-block: 56px 64px; border-top: 1px solid var(--mosa-border); }
.footer__row { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; align-items: flex-start; }
.footer .brand { font-size: 1.2rem; }
.footer__cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer__col h5 { margin: 0 0 14px; font-size: .74rem; letter-spacing: .1em; text-transform: uppercase; color: var(--mosa-slate-400); font-weight: 800; }
.footer__col a { display: block; color: var(--mosa-slate-600); font-weight: 600; font-size: .95rem; padding: 5px 0; }
.footer__col a:hover { color: var(--mosa-navy-950); }
.footer__legal { margin-top: 44px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--mosa-slate-400); font-size: .86rem; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .shell, .header__row { padding-inline: 24px; }
  section { padding-block: 64px; }
  .hero__grid { grid-template-columns: 1fr; gap: 44px; }
  .nav { display: none; }
  .cards { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: 1fr 1fr; gap: 30px 24px; }
  .mock { grid-template-columns: 1fr; }
  .gov { order: -1; }
  .cta-card { padding: 48px 28px; }
}
@media (max-width: 560px) {
  section { padding-block: 52px; }
  .tiles { gap: 9px; }
  .stats__grid { grid-template-columns: 1fr 1fr; }
  .hero__cta .btn { flex: 1; justify-content: center; }
}

/* ---------- Motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}