/* ============ KYVIX — design system (light) ============ */
:root {
  --bg: #ffffff;
  --bg-2: #f4f8f5;
  --surface: #ffffff;
  --surface-2: #f5f8f6;
  --line: rgba(13, 28, 20, 0.10);
  --line-strong: rgba(16, 170, 71, 0.28);

  --text: #0c140f;
  --muted: #56655c;
  --muted-2: #8a978f;

  --green: #12a347;       /* readable on white (text/links) */
  --green-bright: #19c552; /* fills / accents */
  --green-deep: #0b8038;   /* hover / darker */
  --glow: rgba(25, 197, 82, 0.28);

  --radius: 16px;
  --radius-sm: 11px;
  --maxw: 1160px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-head: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ---------- Ambient background ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(13,28,20,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,28,20,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 35%, transparent 75%);
}
.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(620px 420px at 50% -10%, rgba(25,197,82,0.13), transparent 70%),
    radial-gradient(700px 520px at 88% 18%, rgba(25,197,82,0.07), transparent 70%);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-head); font-weight: 600; font-size: 0.93rem;
  padding: 11px 20px; border-radius: 100px; cursor: pointer;
  border: 1px solid transparent; transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn--lg { padding: 14px 26px; font-size: 1rem; }
.btn--primary {
  background: linear-gradient(180deg, var(--green-bright), var(--green));
  color: #ffffff;
  box-shadow: 0 8px 22px -8px var(--glow);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -10px var(--glow); }
.btn--ghost { background: #fff; color: var(--text); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--line-strong); background: rgba(25,197,82,0.07); color: var(--green-deep); }
.btn__dot { width: 7px; height: 7px; border-radius: 50%; background: #fff; }
.btn--ghost .btn__dot { background: var(--green); }

/* ---------- Navbar ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; gap: 28px;
  padding: 16px clamp(20px, 5vw, 48px);
  transition: all 0.3s var(--ease);
}
.nav.scrolled {
  background: rgba(255,255,255,0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding-top: 12px; padding-bottom: 12px;
}
.nav__brand { display: flex; align-items: center; gap: 10px; }
.nav__name { font-family: var(--font-head); font-weight: 700; font-size: 1.25rem; letter-spacing: 1px; }
.nav__links { display: flex; gap: 28px; margin-left: auto; }
.nav__links a { color: var(--muted); font-size: 0.94rem; font-weight: 500; transition: color 0.2s; }
.nav__links a:hover { color: var(--text); }
.nav__actions { display: flex; gap: 10px; }
.nav__actions .btn--ghost { width: 40px; justify-content: center; padding: 11px 0; font-weight: 700; }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }

/* ---------- Hero ---------- */
.hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: 170px clamp(20px, 5vw, 48px) 90px;
  display: grid; grid-template-columns: 1.15fr 0.85fr; align-items: center; gap: 40px;
}
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 600;
  color: var(--green-deep); letter-spacing: 0.5px;
  padding: 6px 14px; border-radius: 100px;
  background: rgba(25,197,82,0.10); border: 1px solid var(--line-strong);
}
.badge__pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 var(--glow); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(25,197,82,0.45); } 70% { box-shadow: 0 0 0 8px rgba(25,197,82,0); } 100% { box-shadow: 0 0 0 0 rgba(25,197,82,0); } }

.hero__title {
  font-family: var(--font-head); font-weight: 700;
  font-size: clamp(2.4rem, 5.5vw, 4.1rem); line-height: 1.05; letter-spacing: -1.5px;
  margin: 22px 0 18px;
}
.grad {
  background: linear-gradient(120deg, var(--green-bright), var(--green) 55%, var(--green-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__sub { font-size: 1.12rem; color: var(--muted); max-width: 520px; }
.hero__cta { display: flex; gap: 14px; margin: 32px 0 40px; flex-wrap: wrap; }
.hero__meta { display: flex; align-items: center; gap: 26px; }
.hero__meta > div:not(.hero__div) { display: flex; flex-direction: column; }
.hero__meta strong { font-family: var(--font-head); font-size: 1.5rem; color: var(--text); }
.hero__meta span { font-size: 0.82rem; color: var(--muted-2); }
.hero__div { width: 1px; height: 38px; background: var(--line); }

.hero__emblem { display: flex; justify-content: center; }
.hero__emblem img { width: min(360px, 80%); filter: drop-shadow(0 18px 40px var(--glow)); animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }

/* ---------- Contract address band ---------- */
.ca { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(20px, 5vw, 48px); }
.ca__inner {
  background:
    radial-gradient(420px 180px at 50% 0%, rgba(25,197,82,0.10), transparent 70%),
    var(--surface);
  border: 1px solid var(--line-strong); border-radius: 20px;
  padding: 28px clamp(20px, 4vw, 36px);
  box-shadow: 0 24px 50px -30px var(--glow);
  text-align: center;
}
.ca__top { display: flex; align-items: center; justify-content: center; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.ca__tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.5px;
  color: var(--green-deep); background: rgba(25,197,82,0.10);
  border: 1px solid var(--line-strong); padding: 5px 12px; border-radius: 100px;
}
.ca__label { font-family: var(--font-head); font-weight: 600; font-size: 0.98rem; color: var(--text); }

.ca__box {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: center;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 10px 10px 18px; max-width: 760px; margin: 0 auto;
}
.ca__addr {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.95rem; color: var(--text); letter-spacing: 0.3px;
  word-break: break-all; text-align: left; flex: 1; min-width: 220px;
}
.ca__copy {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  font-family: var(--font-head); font-weight: 600; font-size: 0.88rem;
  color: #fff; background: linear-gradient(180deg, var(--green-bright), var(--green));
  border: 0; border-radius: 9px; padding: 9px 14px; white-space: nowrap;
  transition: all 0.2s var(--ease); box-shadow: 0 6px 16px -8px var(--glow);
}
.ca__copy:hover { transform: translateY(-1px); box-shadow: 0 10px 22px -8px var(--glow); }
.ca__copy svg { width: 16px; height: 16px; }
.ca__copy.copied { background: var(--green-deep); }

.ca__links { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }
.ca__link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-weight: 600; font-size: 0.88rem;
  color: var(--text); background: #fff; border: 1px solid var(--line);
  padding: 9px 16px; border-radius: 100px; transition: all 0.2s var(--ease);
}
.ca__link svg { width: 16px; height: 16px; color: var(--green-deep); }
.ca__link:hover { border-color: var(--line-strong); background: rgba(25,197,82,0.06); color: var(--green-deep); transform: translateY(-1px); }
.ca__link--primary { background: rgba(25,197,82,0.08); border-color: var(--line-strong); color: var(--green-deep); }

/* ---------- Sections ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 80px clamp(20px, 5vw, 48px); }
.section__head { text-align: center; max-width: 660px; margin: 0 auto 52px; }
.eyebrow {
  font-family: var(--font-head); font-size: 0.8rem; font-weight: 700;
  color: var(--green); letter-spacing: 2px; text-transform: uppercase;
}
.section__head h2 {
  font-family: var(--font-head); font-weight: 700;
  font-size: clamp(1.8rem, 3.6vw, 2.7rem); letter-spacing: -1px; margin: 14px 0 14px; line-height: 1.12;
}
.section__head p { color: var(--muted); font-size: 1.05rem; }

/* ---------- Feature cards ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; transition: all 0.3s var(--ease); position: relative; overflow: hidden;
  box-shadow: 0 12px 30px -22px rgba(13,28,20,0.35);
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  background: radial-gradient(300px 120px at 50% -10%, rgba(25,197,82,0.10), transparent 70%);
  opacity: 0; transition: opacity 0.3s;
}
.card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: 0 20px 40px -22px var(--glow); }
.card:hover::before { opacity: 1; }
.card__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(25,197,82,0.10); border: 1px solid var(--line-strong); color: var(--green-deep);
  margin-bottom: 18px;
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { font-family: var(--font-head); font-size: 1.12rem; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.93rem; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; position: relative;
}
.step__num { font-family: var(--font-head); font-size: 2.4rem; font-weight: 700; color: rgba(18,163,71,0.28); display: block; margin-bottom: 8px; }
.step h3 { font-family: var(--font-head); font-size: 1.2rem; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 0.95rem; }

/* ---------- Why ---------- */
.why { display: grid; grid-template-columns: 1fr 0.85fr; gap: 56px; align-items: center; }
.why__text h2 { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -1px; margin: 14px 0 24px; line-height: 1.12; }
.why__list { list-style: none; margin-bottom: 32px; display: grid; gap: 14px; }
.why__list li { display: flex; align-items: center; gap: 12px; color: var(--text); font-size: 1.02rem; }
.check { width: 22px; height: 22px; border-radius: 50%; background: rgba(25,197,82,0.12); border: 1px solid var(--line-strong); flex-shrink: 0; position: relative; }
.check::after { content: ""; position: absolute; left: 7px; top: 4px; width: 5px; height: 9px; border: solid var(--green-deep); border-width: 0 2px 2px 0; transform: rotate(45deg); }

.why__panel { display: grid; gap: 14px; }
.alert {
  background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: 0 24px 50px -28px var(--glow);
}
.alert--ghost { opacity: 0.85; border-color: var(--line); box-shadow: 0 12px 30px -24px rgba(13,28,20,0.3); }
.alert__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.alert__tag { font-family: var(--font-head); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.5px; color: var(--green-deep); background: rgba(25,197,82,0.12); padding: 4px 10px; border-radius: 6px; }
.alert__time { font-size: 0.78rem; color: var(--muted-2); }
.alert__name { font-family: var(--font-head); font-weight: 600; font-size: 1.02rem; margin-bottom: 8px; }
.alert__name b { color: var(--green); }
.alert__row { display: flex; justify-content: space-between; padding: 7px 0; border-top: 1px solid var(--line); font-size: 0.92rem; }
.alert__row span { color: var(--muted); }
.alert__row b { font-family: var(--font-head); }
.alert__row .ok { color: var(--green); }
.alert__links { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }
.alert__links span { font-family: var(--font-head); font-size: 0.74rem; color: var(--green-deep); background: rgba(25,197,82,0.10); border: 1px solid var(--line-strong); padding: 4px 10px; border-radius: 6px; }

/* ---------- Footer (unified CTA + footer) ---------- */
.footer { max-width: var(--maxw); margin: 70px auto 0; padding: 0 clamp(20px, 5vw, 48px) 48px; }
.footer__cta {
  text-align: center; padding: 64px 28px; border-radius: 24px;
  background:
    radial-gradient(520px 240px at 50% 0%, rgba(25,197,82,0.14), transparent 70%),
    var(--bg-2);
  border: 1px solid var(--line-strong);
}
.footer__cta h2 { font-family: var(--font-head); font-weight: 700; font-size: clamp(1.9rem, 4vw, 2.8rem); letter-spacing: -1px; }
.footer__cta p { color: var(--muted); margin: 12px 0 28px; font-size: 1.08rem; }
.footer__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.footer__bottom {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--line);
}
.footer__brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 700; font-size: 1.15rem; letter-spacing: 1px; }
.footer__tag { color: var(--muted); font-size: 0.92rem; flex: 1; text-align: center; min-width: 240px; }
.footer__copy { color: var(--muted-2); font-size: 0.82rem; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 140px; text-align: center; }
  .hero__inner { display: flex; flex-direction: column; align-items: center; }
  .hero__emblem { order: -1; }
  .hero__emblem img { width: 220px; }
  .hero__sub { margin: 0 auto; }
  .hero__cta, .hero__meta { justify-content: center; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .why { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 720px) {
  .nav__links, .nav__actions { display: none; }
  .nav__burger { display: flex; margin-left: auto; }
  .nav.open .nav__links {
    display: flex; flex-direction: column; gap: 18px; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(255,255,255,0.97); backdrop-filter: blur(14px); padding: 24px clamp(20px,5vw,48px); border-bottom: 1px solid var(--line); margin: 0;
  }
  .nav.open .nav__actions { display: flex; position: absolute; top: 100%; left: 0; right: 0; transform: translateY(140px); padding: 0 clamp(20px,5vw,48px); }
  .steps { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .footer__tag { order: 3; }
}
@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr; }
  .hero__meta { gap: 16px; }
  .hero__meta strong { font-size: 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}