/* Susurrium landing — spokój, przestrzeń, szept. Zero frameworków. */
:root {
  --bg: #0a0d13;
  --bg-2: #0e1420;
  --ink: #e8e6df;
  --ink-dim: #9aa3ad;
  --accent: #8fb6c7;
  --accent-dim: #5d7d8c;
  --line: rgba(232, 230, 223, 0.12);
  --maxw: 62rem;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font: 400 1.05rem/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

/* Tło: bardzo wolne, oddychające gradienty — szept przestrzeni. */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(38rem 30rem at 18% 22%, rgba(84, 118, 140, 0.16), transparent 60%),
    radial-gradient(44rem 34rem at 82% 70%, rgba(64, 88, 112, 0.13), transparent 65%),
    radial-gradient(30rem 26rem at 60% 12%, rgba(120, 140, 150, 0.07), transparent 60%),
    var(--bg);
  animation: breathe 26s ease-in-out infinite alternate;
}
@keyframes breathe {
  from { transform: scale(1) translateY(0); opacity: 1; }
  to   { transform: scale(1.06) translateY(-1.5%); opacity: 0.92; }
}
@media (prefers-reduced-motion: reduce) {
  .bg { animation: none; }
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1.4rem clamp(1.2rem, 4vw, 3rem);
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
}

.brand {
  font-size: 0.95rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.lang { color: var(--ink-dim); font-size: 0.85rem; margin-right: 3.2rem; }
.lang button {
  background: none;
  border: none;
  color: var(--ink-dim);
  font: inherit;
  letter-spacing: 0.08em;
  cursor: pointer;
  padding: 0.3rem 0.35rem;
}
.lang button[aria-pressed="true"] { color: var(--ink); border-bottom: 1px solid var(--accent-dim); }
.lang button:hover { color: var(--ink); }

main {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(1.2rem, 4vw, 3rem);
  flex: 1;
}

.hero { padding: clamp(4rem, 12vh, 9rem) 0 clamp(3rem, 8vh, 5rem); }

.kicker {
  color: var(--accent-dim);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: 1.2rem;
}

h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 300;
  letter-spacing: 0.14em;
  margin-bottom: 1.6rem;
}

.tagline {
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  font-weight: 300;
  color: var(--ink);
  max-width: 34ch;
}

.sub {
  margin-top: 0.9rem;
  color: var(--ink-dim);
  max-width: 52ch;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: clamp(1.2rem, 3vw, 2.4rem);
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}
.pillars h2 {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.7rem;
}
.pillars p { color: var(--ink-dim); font-size: 0.98rem; }

.waitlist {
  padding: 3.2rem 0 4rem;
  border-top: 1px solid var(--line);
  max-width: 36rem;
}
.waitlist h2 { font-weight: 400; font-size: 1.35rem; margin-bottom: 0.5rem; }
.waitlist > p { color: var(--ink-dim); margin-bottom: 1.4rem; }

#waitlist-form { display: flex; gap: 0.6rem; flex-wrap: wrap; }
#waitlist-form input {
  flex: 1 1 16rem;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  color: var(--ink);
  font: inherit;
  padding: 0.75rem 1rem;
}
#waitlist-form input:focus { outline: 1px solid var(--accent-dim); }
#waitlist-form button {
  background: var(--accent);
  color: #0a0d13;
  border: none;
  border-radius: 0.4rem;
  font: 500 1rem/1 inherit;
  font-family: inherit;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  letter-spacing: 0.04em;
}
#waitlist-form button:hover { background: #a6c8d6; }

.form-note { margin-top: 0.9rem; font-size: 0.9rem; color: var(--accent); min-height: 1.4em; }

footer {
  border-top: 1px solid var(--line);
  padding: 2rem clamp(1.2rem, 4vw, 3rem) 2.6rem;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  color: var(--ink-dim);
  font-size: 0.88rem;
}
.disclaimer { margin-bottom: 0.4rem; }
.fineprint { margin-bottom: 1.2rem; }
footer a { color: var(--accent-dim); }
.copyright { font-size: 0.8rem; letter-spacing: 0.06em; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}