/* ============================================================
   Navii landing — luminous oceanic palette (sky + sea + chrome)
   Light, airy, premium — matches the bright hero video.
   Fraunces + Archivo typography.
   ============================================================ */
:root{
  /* light base */
  --bg:#f4f8fb;            /* near-white, sea spray */
  --bg-2:#e7f1f8;          /* pale sky */
  --panel:#ffffff;         /* card surface */
  --line:#c7d6e2;          /* soft borders on light */
  --line-soft:#dbe7f0;

  /* ink on light */
  --ink:#16242f;           /* deep ink */
  --ink-dim:#3e576b;       /* muted ink */
  --ink-faint:#6f879b;     /* faint ink */

  /* deep ocean (dark section + hero text) */
  --ocean:#0e2c40;
  --ocean-2:#143a52;
  --ink-on-dark:#eaf3fa;
  --ink-on-dark-dim:#a9c4d8;
  --ink-on-dark-faint:#7c9bb2;

  /* cool azure accent + chrome/silver */
  --accent:#2e90c9;        /* bright sky azure */
  --accent-2:#1f7fb8;      /* deeper azure */
  --accent-soft:#bfe0f0;   /* pale sky tint */
  --chrome:#c7d0d6;        /* polished silver */
  --chrome-dim:#aeb9c0;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:'Archivo',-apple-system,BlinkMacSystemFont,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.5;
}
h1,h2,h3{font-family:'Fraunces',Georgia,serif;font-weight:600;letter-spacing:-.015em;line-height:1.05}
a{color:inherit;text-decoration:none}

/* ---------- top bar ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:16px clamp(16px,4vw,40px);
  padding-top:calc(16px + env(safe-area-inset-top));
  transition:background .25s,backdrop-filter .25s,border-color .25s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:linear-gradient(180deg,rgba(244,248,251,.95),rgba(244,248,251,.82));
  backdrop-filter:blur(14px);border-bottom-color:var(--line);
}
.brand{display:flex;align-items:center;gap:10px;font-family:'Fraunces',serif;font-weight:700;font-size:1.25rem;color:#fff;text-shadow:0 1px 12px rgba(8,30,46,.45)}
.nav.scrolled .brand{color:var(--ink);text-shadow:none}
.brand .anchor{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  box-shadow:0 4px 14px rgba(46,144,201,.4);font-size:1.05rem;
}
.brand.sm{font-size:1.05rem;color:var(--ink);text-shadow:none}
.brand.sm .anchor{width:28px;height:28px;font-size:.9rem}
.nav-right{display:flex;align-items:center;gap:12px}

.langs{display:flex;gap:3px;background:rgba(14,44,64,.32);border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:3px;backdrop-filter:blur(8px)}
.nav.scrolled .langs{background:rgba(231,241,248,.7);border-color:var(--line)}
.flag{
  border:none;background:none;cursor:pointer;color:rgba(255,255,255,.82);
  font-family:'Archivo';font-weight:700;font-size:.66rem;letter-spacing:.04em;
  display:flex;align-items:center;gap:5px;padding:5px 9px;border-radius:999px;transition:.15s;
}
.nav.scrolled .flag{color:var(--ink-dim)}
.flag .fl{font-size:.95rem;line-height:1}
.flag:hover{color:#fff}
.nav.scrolled .flag:hover{color:var(--accent-2)}
.flag.active,
.nav.scrolled .flag.active{background:var(--accent);color:#fff}
.flag.active .lc{color:#fff}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:'Archivo';font-weight:600;font-size:.88rem;cursor:pointer;
  border:1px solid rgba(255,255,255,.5);background:rgba(255,255,255,.16);color:#fff;
  padding:10px 18px;border-radius:10px;transition:filter .15s,transform .1s,background .15s;
  backdrop-filter:blur(6px);
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:scale(.97)}
.btn.login{padding:9px 16px}
.nav.scrolled .btn.login{background:#fff;border-color:var(--line);color:var(--ink)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border-color:var(--accent-2);color:#fff;box-shadow:0 6px 20px rgba(46,144,201,.35)}
.btn.ghost{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.55);color:#fff}
.btn.lg{font-size:1rem;padding:15px 28px;border-radius:12px}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* ---------- hero ---------- */
.hero{position:relative;height:100svh;min-height:560px;display:flex;align-items:center;overflow:hidden}
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;z-index:0;background:var(--bg);
}
.hero-overlay{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(180deg, rgba(14,44,64,.18) 0%, rgba(20,58,82,.06) 40%, rgba(14,44,64,.40) 100%),
    radial-gradient(120% 90% at 18% 35%, transparent 50%, rgba(14,44,64,.28) 100%);
}
.hero-inner{
  position:relative;z-index:2;width:100%;
  max-width:1100px;margin:0 auto;padding:0 clamp(20px,5vw,48px);
}
.eyebrow{
  font-family:'Archivo';font-weight:700;font-size:.72rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--accent-soft);margin-bottom:18px;
  text-shadow:0 1px 10px rgba(8,30,46,.5);
}
.eyebrow.center{text-align:center;color:var(--accent-2);text-shadow:none}
.hero-title{
  font-size:clamp(2.4rem,7vw,5.2rem);font-weight:600;color:#fff;
  max-width:16ch;text-shadow:0 2px 30px rgba(8,30,46,.5);
}
.hero-sub{
  margin-top:22px;font-size:clamp(1rem,2.2vw,1.4rem);color:#eaf3fa;
  max-width:46ch;font-weight:400;text-shadow:0 1px 16px rgba(8,30,46,.5);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.hero-trial{margin-top:24px;font-size:.82rem;color:#d6e7f2;letter-spacing:.02em;text-shadow:0 1px 10px rgba(8,30,46,.5)}
.scroll-hint{
  position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;
  color:rgba(255,255,255,.8);font-size:1.4rem;animation:bob 2.2s ease-in-out infinite;
}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ---------- bands ---------- */
.band{padding:clamp(64px,11vw,128px) clamp(20px,5vw,48px);background:var(--bg)}
.band.dark{
  background:linear-gradient(180deg,var(--ocean-2),var(--ocean));
  color:var(--ink-on-dark);
}
.band-inner{max-width:1100px;margin:0 auto}
.band-inner.center{text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}
.band-title{font-size:clamp(1.9rem,4.5vw,3.2rem);color:var(--ink);max-width:20ch}
.band.dark .band-title{color:#fff}
.band-inner.center .band-title{margin:0 auto}
.band-lead{margin-top:18px;font-size:clamp(1rem,2vw,1.25rem);color:var(--ink-dim);max-width:60ch}
.band.dark .band-lead{color:var(--ink-on-dark-dim)}
.band-inner.center .band-lead{margin:18px auto 0}

/* ---------- feature cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.fcard{
  background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.04));
  border:1px solid rgba(199,208,214,.22);border-radius:16px;padding:26px;
  backdrop-filter:blur(4px);
  transition:transform .18s,border-color .18s,background .18s;
}
.fcard:hover{transform:translateY(-4px);border-color:var(--accent);background:linear-gradient(180deg,rgba(255,255,255,.14),rgba(255,255,255,.05))}
.fcard .fi{font-size:1.9rem;display:block;margin-bottom:14px}
.fcard h3{font-size:1.3rem;color:#fff}
.fcard p{margin-top:10px;color:var(--ink-on-dark-dim);font-size:.95rem;line-height:1.55}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);padding:36px clamp(20px,5vw,48px);background:var(--bg-2)}
.foot-inner{
  max-width:1100px;margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.credit{color:var(--ink-dim);font-size:.85rem}
.credit a{color:var(--accent-2);font-weight:700;text-decoration:underline;text-underline-offset:2px}
.credit a:hover{color:var(--accent)}

@media(max-width:560px){
  .flag .lc{display:none}
  .flag{padding:6px 8px}
  .hero-cta .btn.lg{flex:1}
  .foot-inner{flex-direction:column;align-items:flex-start;gap:12px}
}