/* Sypher — landing. Dark, éditorial, gros type. Les couleurs viennent de
   mobile/lib/app/theme.dart (AppColors) et du logo, pour que la page et l'app
   ne divergent jamais. */

:root {
  --ink: #08080A;
  --ink-2: #0E0E11;
  --surface: #141417;
  --border: #232327;
  --text: #F5F5F7;
  --muted: #A1A1A8;
  --subtle: #6E6E73;
  --accent: #7187DA;
  --red: #FF5A3C;
  --amber: #F5A300;
  --teal: #16BFC7;
  --purple: #7B4BE0;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 22px; }

/* ---------------------------------------------------------------- header -- */

header.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(8, 8, 10, .72);
  backdrop-filter: saturate(140%) blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 14px; }

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 19px; letter-spacing: -.02em; }
.brand img { width: 28px; height: 28px; }

.top-right { display: flex; align-items: center; gap: 10px; }

.lang { display: flex; gap: 2px; font-size: 13px; font-weight: 700; color: var(--subtle); }
.lang a { text-decoration: none; padding: 5px 9px; border-radius: 999px; }
.lang a[aria-current='true'] { color: var(--ink); background: var(--text); }

.top .btn-sm {
  display: none;
  padding: 9px 16px; border-radius: 999px; font-size: 14px; font-weight: 700;
  text-decoration: none; background: var(--text); color: var(--ink);
}
@media (min-width: 700px) { .top .btn-sm { display: inline-flex; } }

/* ------------------------------------------------------------------ hero -- */

.hero { position: relative; padding: 64px 0 72px; overflow: hidden; min-height: calc(100svh - 64px); display: flex; align-items: center; }

.hero::before {
  content: ''; position: absolute; z-index: 0;
  top: -280px; left: 50%; transform: translateX(-50%);
  width: min(1100px, 150vw); height: 760px;
  background:
    radial-gradient(closest-side, rgba(255, 90, 60, .30), transparent 70%) -140px 40px / 620px 620px no-repeat,
    radial-gradient(closest-side, rgba(22, 191, 199, .26), transparent 70%) 220px 0 / 620px 620px no-repeat,
    radial-gradient(closest-side, rgba(123, 75, 224, .30), transparent 70%) 40px 260px / 660px 660px no-repeat;
  filter: blur(40px);
  pointer-events: none;
}

.hero .wrap {
  position: relative; z-index: 1;
  display: grid; gap: 56px 48px;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
}

@media (min-width: 980px) {
  .hero { padding: 40px 0 56px; }
  .hero .wrap { grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 40px; }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border); background: rgba(20, 20, 23, .7);
  padding: 7px 14px; border-radius: 999px; margin: 0 0 26px;
}

.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px rgba(22, 191, 199, .18); }

h1 {
  margin: 0;
  font-size: clamp(38px, 6.4vw, 68px);
  line-height: 1;
  letter-spacing: -.04em;
  font-weight: 800;
  max-width: 14ch;
}

h1 em { font-style: normal; color: transparent; background: linear-gradient(96deg, var(--red), var(--amber) 38%, var(--teal) 68%, var(--purple)); -webkit-background-clip: text; background-clip: text; }

.lede { margin: 24px 0 0; max-width: 46ch; font-size: clamp(17px, 2.1vw, 21px); color: var(--muted); }

.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px 26px; border-radius: 999px; font-weight: 700; font-size: 16px;
  text-decoration: none; border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 19px; height: 19px; }
.btn-primary { background: var(--text); color: var(--ink); }
.btn-ghost { background: rgba(20, 20, 23, .75); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); }
@media (max-width: 460px) { .cta { flex-direction: column; } .btn { width: 100%; } }

.note { margin: 18px 0 0; font-size: 14px; color: var(--subtle); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }

/* -------------------------------------------------------------- sections -- */

/* ------------------------------------------------------------ parrainage -- */

.referral { border-top: 1px solid var(--border); padding: 72px 0 84px; }

.referral h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4.2vw, 40px); line-height: 1.05; letter-spacing: -.035em; font-weight: 800;
}

.referral .intro { margin: 0 0 40px; color: var(--muted); max-width: 54ch; }

/* Les trois paliers : le chiffre d'abord, c'est lui l'argument. */
.tiers { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.tier {
  border: 1px solid var(--border); border-radius: 18px; padding: 26px 24px;
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
}
.tier .count { display: block; font-size: clamp(34px, 5vw, 46px); font-weight: 800; letter-spacing: -.045em; line-height: 1; }
.tier .unit { display: block; margin: 8px 0 14px; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--subtle); }
.tier b { display: block; font-size: 18px; letter-spacing: -.015em; margin-bottom: 4px; }
.tier span.detail { color: var(--muted); font-size: 15px; }

.tier:nth-child(1) .count { color: var(--red); }
.tier:nth-child(2) .count { color: var(--teal); }
.tier:nth-child(3) .count { color: var(--purple); }

.how-to { margin: 28px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.how-to li { color: var(--muted); padding-left: 26px; position: relative; }
.how-to li::before {
  content: ''; position: absolute; left: 6px; top: .65em;
  width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
}
.how-to b { color: var(--text); font-weight: 700; }

/* ---------------------------------------------------------------- footer -- */

footer { border-top: 1px solid var(--border); padding: 34px 0 52px; color: var(--subtle); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
footer a { text-decoration: none; }
footer a:hover { color: var(--text); }


/* ---------------------------------------------------------------- phones -- */

/* Deux écrans de l'app, en vrai : Discover devant, la connexion derrière. Les
   images vivent dans assets/ — voir web/README.md pour les remplacer. */
.shots {
  position: relative;
  display: flex; justify-content: center; align-items: flex-end;
  padding: 10px 0 30px;
  perspective: 1400px;
}

.phone {
  position: relative;
  width: min(42vw, 232px);
  aspect-ratio: 9 / 19.5;
  border-radius: 40px;
  padding: 9px;
  background: linear-gradient(160deg, #35353B, #171719 45%, #2A2A2F);
  box-shadow:
    0 2px 0 rgba(255, 255, 255, .08) inset,
    0 40px 80px -30px rgba(0, 0, 0, .95),
    0 0 0 1px rgba(255, 255, 255, .05);
  flex: none;
}

.phone .screen {
  position: relative;
  height: 100%; width: 100%;
  border-radius: 32px;
  overflow: hidden;
  background: var(--ink-2);
  display: flex; align-items: center; justify-content: center;
}

.phone .screen img { width: 100%; height: 100%; object-fit: cover; }

.phone .island {
  position: absolute; z-index: 2; top: 18px; left: 50%; transform: translateX(-50%);
  width: 32%; height: 20px; border-radius: 999px; background: #08080A;
}

.phone-back {
  transform: translateX(14%) rotate(6deg) scale(.9);
  transform-origin: bottom center;
  filter: brightness(.82) saturate(.9);
  z-index: 1;
}

.phone-front {
  transform: translateX(-14%) rotate(-3deg);
  z-index: 2;
}

.shot-tag {
  position: absolute; z-index: 3; bottom: 0; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--subtle);
}
.shot-tag span { border: 1px solid var(--border); background: rgba(20, 20, 23, .8); padding: 6px 12px; border-radius: 999px; }

@media (max-width: 420px) {
  .phone { width: 44vw; border-radius: 30px; padding: 7px; }
  .phone .screen { border-radius: 24px; }
  .phone .island { top: 12px; height: 14px; }
}