/* HilbertRaum — MVP site
   Design: privacy-first technical, credible, calm, practical.
   Dark panel aesthetic inherited from the demo repo, dialed down:
   no scanlines, no terminal cosplay — quiet system feel instead.
   Zero external requests: system font stacks only. */

:root {
  --bg: #0a0d11;
  --bg-raise: #0e1319;
  --panel: #11171f;
  --panel-2: #141b24;
  --line: #1e2733;
  --line-2: #2a3645;
  --text: #e9eef3;
  --body: #a9b5c1;
  --dim: #71808f;
  --acc: #57d0a4;
  --acc-bright: #8fe8c8;
  --acc-ink: #06241a;
  --acc-soft: rgba(87, 208, 164, 0.1);
  --amber: #e3b566;
  --amber-soft: rgba(227, 181, 102, 0.12);
  --radius: 14px;
  --radius-sm: 9px;
  --font: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Code", ui-monospace, "JetBrains Mono", "SF Mono", Consolas, monospace;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(87, 208, 164, 0.25); }

h1, h2, h3, h4 { color: var(--text); line-height: 1.18; margin: 0 0 0.5em; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 5.2vw, 3.3rem); font-weight: 750; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.15rem); font-weight: 700; }
h3 { font-size: 1.12rem; font-weight: 650; }
p { margin: 0 0 1em; }
a { color: var(--acc-bright); text-decoration: none; }
a:hover { text-decoration: underline; }
b, strong { color: var(--text); font-weight: 650; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 13, 17, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; gap: 22px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 1.02rem; white-space: nowrap; }
.brand:hover { text-decoration: none; }
.brand svg { width: 22px; height: 22px; flex: none; }
.brand .b2 { color: var(--acc); }
.brand-claim { font-family: var(--mono); font-size: 0.78rem; color: var(--dim); letter-spacing: 0.04em; margin: -4px 0 12px; }
.nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.nav a { color: var(--body); padding: 7px 11px; border-radius: 8px; font-size: 0.95rem; }
.nav a:hover { color: var(--text); background: var(--panel); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--acc-bright); }
.lang { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-left: 8px; flex: none; }
.lang a { padding: 5px 10px; font-size: 0.82rem; font-family: var(--mono); color: var(--dim); }
.lang a:hover { text-decoration: none; color: var(--text); }
.lang a.on { background: var(--panel-2); color: var(--acc-bright); }
.top-cta { margin-left: 10px; flex: none; }

.menu-btn {
  display: none; margin-left: auto; background: none; border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; cursor: pointer; color: var(--text);
}
.menu-btn span { display: block; width: 18px; height: 2px; background: currentColor; margin: 3.5px 0; border-radius: 2px; }

@media (max-width: 880px) {
  .topbar .nav, .topbar .top-cta { display: none; }
  .menu-btn { display: block; }
  .lang { margin-left: auto; }
  .menu-btn { margin-left: 0; }
  .topbar .wrap { gap: 12px; }
  .nav.open {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 62px; left: 0; right: 0;
    background: var(--bg-raise); border-bottom: 1px solid var(--line);
    padding: 10px 16px 16px; gap: 2px;
  }
  .nav.open a { padding: 11px 12px; font-size: 1rem; }
}

/* ---------- buttons & pills ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 10px; font-weight: 650; font-size: 0.97rem;
  border: 1px solid transparent; cursor: pointer; transition: all 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn-pri { background: var(--acc); color: var(--acc-ink); }
.btn-pri:hover { background: var(--acc-bright); transform: translateY(-1px); }
.btn-ghost { border-color: var(--line-2); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--acc); color: var(--acc-bright); }
.btn.sm { padding: 7px 14px; font-size: 0.88rem; }

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.04em;
  color: var(--acc-bright); background: var(--acc-soft);
  border: 1px solid rgba(87, 208, 164, 0.25);
  padding: 5px 12px; border-radius: 99px;
}
.pill.amber { color: var(--amber); background: var(--amber-soft); border-color: rgba(227, 181, 102, 0.3); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--acc); flex: none; }
.pill.amber .dot { background: var(--amber); }
@media (prefers-reduced-motion: no-preference) {
  .dot.live { animation: pulse 2.4s ease infinite; }
  @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
}

.kicker {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--acc); margin-bottom: 14px; display: block;
}

/* ---------- sections ---------- */
.sec { padding: 84px 0; }
.sec.tight { padding: 56px 0; }
.sec-head { max-width: 680px; margin-bottom: 42px; }
.sec-head .lead, .lead { font-size: 1.13rem; color: var(--body); }
.sec.alt { background: var(--bg-raise); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- hero ---------- */
.hero { padding: 88px 0 72px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(720px 420px at 78% -10%, rgba(87, 208, 164, 0.07), transparent 60%),
    radial-gradient(560px 380px at 8% 110%, rgba(87, 208, 164, 0.045), transparent 60%);
}
.hero .wrap { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: 56px; align-items: center; position: relative; }
.hero h1 { margin: 18px 0 18px; }
.hero h1 .g { color: var(--acc); }
.hero .sub { font-size: 1.16rem; max-width: 33em; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 18px; }
.hero-meta { font-family: var(--mono); font-size: 0.78rem; color: var(--dim); letter-spacing: 0.02em; }
.hero-meta b { color: var(--body); font-weight: 500; }
@media (max-width: 940px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 56px 0; }
}

/* ---------- demo panel (hero visual) ---------- */
.panel {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.panel-bar {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-bottom: 1px solid var(--line); background: var(--panel-2);
  font-family: var(--mono); font-size: 0.76rem; color: var(--dim);
}
.panel-bar .sp { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; color: var(--acc-bright); }
.panel-body { padding: 18px; display: grid; gap: 12px; }
.prow {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--bg-raise); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 0.9rem;
}
.prow .ic { flex: none; width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center; background: var(--acc-soft); color: var(--acc-bright); font-family: var(--mono); font-size: 0.82rem; }
.prow .t { color: var(--text); font-weight: 600; font-size: 0.92rem; }
.prow .d { color: var(--dim); font-size: 0.84rem; line-height: 1.45; }
.prow.ans { border-color: rgba(87, 208, 164, 0.3); }
.panel-foot {
  display: flex; flex-wrap: wrap; gap: 8px 18px; padding: 12px 16px;
  border-top: 1px solid var(--line); font-family: var(--mono); font-size: 0.74rem; color: var(--dim);
}
.panel-foot .ok { color: var(--acc-bright); }

/* ---------- cards ---------- */
.grid { display: grid; gap: 16px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid.c3, .grid.c4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } }

.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; transition: border-color 0.15s ease;
}
.card:hover { border-color: var(--line-2); }
.card .ic {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: var(--acc-soft); color: var(--acc-bright); margin-bottom: 16px;
  font-size: 1.05rem;
}
.card h3 { margin-bottom: 8px; }
.card p { font-size: 0.95rem; color: var(--body); margin: 0; }
.card .more { display: inline-block; margin-top: 12px; font-size: 0.88rem; font-family: var(--mono); }
.card.quiet { background: transparent; border-style: dashed; }
.card .tag { font-family: var(--mono); font-size: 0.72rem; color: var(--dim); letter-spacing: 0.08em; text-transform: uppercase; display: block; margin-bottom: 10px; }

/* ---------- compare (software vs drive) ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: stretch; }
@media (max-width: 860px) { .compare { grid-template-columns: 1fr; } }
.offer {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; display: flex; flex-direction: column;
}
.offer.hi { border-color: rgba(87, 208, 164, 0.35); background: linear-gradient(180deg, rgba(87, 208, 164, 0.05), var(--panel) 38%); }
.offer .pill { align-self: flex-start; margin-bottom: 16px; }
.offer h3 { font-size: 1.35rem; }
.offer .for { color: var(--dim); font-size: 0.9rem; margin-bottom: 18px; }
.offer ul { list-style: none; padding: 0; margin: 0 0 24px; display: grid; gap: 10px; }
.offer li { padding-left: 26px; position: relative; font-size: 0.96rem; }
.offer li::before { content: "✓"; position: absolute; left: 0; color: var(--acc); font-weight: 700; }
.offer .btn { margin-top: auto; align-self: flex-start; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: step; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.step .no { font-family: var(--mono); color: var(--acc); font-size: 0.85rem; display: block; margin-bottom: 12px; }

/* ---------- waitlist form ---------- */
.signup {
  background: var(--panel); border: 1px solid rgba(87, 208, 164, 0.3); border-radius: var(--radius);
  padding: 36px; max-width: 660px;
  background: linear-gradient(180deg, rgba(87, 208, 164, 0.06), var(--panel) 45%);
}
.signup-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 940px) { .signup-wrap { grid-template-columns: 1fr; } .signup { max-width: none; } }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 0.88rem; color: var(--text); font-weight: 600; margin-bottom: 7px; }
.field input[type="email"], .field input[type="text"], .field textarea, .field select {
  width: 100%; background: var(--bg); border: 1px solid var(--line-2); border-radius: 9px;
  color: var(--text); font: inherit; font-size: 0.97rem; padding: 11px 13px;
}
.field textarea { resize: vertical; min-height: 76px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--acc); }
.choices { display: grid; gap: 9px; }
.choice {
  display: flex; gap: 10px; align-items: flex-start; padding: 11px 13px;
  border: 1px solid var(--line-2); border-radius: 9px; cursor: pointer; transition: border-color 0.12s;
}
.choice:hover { border-color: var(--acc); }
.choice input { margin-top: 4px; accent-color: var(--acc); }
.choice b { display: block; font-size: 0.93rem; }
.choice span { font-size: 0.82rem; color: var(--dim); }
.form-note { font-size: 0.8rem; color: var(--dim); margin-top: 14px; }
.form-fail { color: #e8a0a0; }
/* honeypot — visually removed for humans, present for bots */
.hp-field { position: absolute !important; left: -9999px; top: -9999px; height: 1px; width: 1px; overflow: hidden; }
.form-ok {
  display: none; border: 1px solid rgba(87, 208, 164, 0.4); background: var(--acc-soft);
  border-radius: 10px; padding: 16px 18px; color: var(--acc-bright); font-weight: 550;
}
.form-ok .demo-note { display: block; font-weight: 400; font-size: 0.82rem; color: var(--body); margin-top: 6px; }

/* ---------- prose pages ---------- */
.page-head { padding: 72px 0 0; }
.page-head .lead { max-width: 640px; }
.usecase { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; margin-bottom: 18px; }
@media (max-width: 860px) { .usecase { grid-template-columns: 1fr; } }
.usecase h3 { font-size: 1.25rem; }
.usecase .facts { border-left: 1px solid var(--line); padding-left: 40px; display: grid; gap: 14px; align-content: start; }
@media (max-width: 860px) { .usecase .facts { border-left: 0; padding-left: 0; border-top: 1px solid var(--line); padding-top: 18px; margin-top: 14px; } }
.fact .k { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--acc); display: block; margin-bottom: 3px; }
.fact .v { font-size: 0.93rem; }

.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checklist li { padding-left: 28px; position: relative; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--acc); font-weight: 700; }
.checklist.x li::before { content: "—"; color: var(--dim); }

/* ---------- CTA band ---------- */
.band { border-top: 1px solid var(--line); background: var(--bg-raise); padding: 64px 0; }
.band .wrap { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.band h2 { margin: 0 0 6px; }
.band p { margin: 0; }
.band .btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 44px 0 56px; font-size: 0.9rem; color: var(--dim); }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; margin-bottom: 28px; }
@media (max-width: 720px) { footer .cols { grid-template-columns: 1fr; } }
footer h4 { font-size: 0.82rem; font-family: var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); margin-bottom: 12px; }
footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
footer a { color: var(--body); }
footer a:hover { color: var(--acc-bright); }
.foot-meta { border-top: 1px solid var(--line); padding-top: 22px; display: flex; gap: 8px 24px; flex-wrap: wrap; font-family: var(--mono); font-size: 0.75rem; }

/* ---------- reveal ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
  .reveal.in { opacity: 1; transform: none; }
}

/* table */
.tbl { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.tbl th, .tbl td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.tbl th { color: var(--text); font-weight: 650; font-size: 0.85rem; }
.tbl td:first-child { color: var(--text); }

/* hero app screenshot — replaces the demo panel on this variant */
.hero-shot { position: relative; }
.hero-shot img {
  width: 100%; height: auto; display: block; border-radius: 12px;
  border: 1px solid var(--line-2); box-shadow: 0 28px 70px rgba(0, 0, 0, 0.55);
  transform: perspective(1400px) rotateY(-6deg) rotateX(1.5deg);
}
.shot-chip {
  position: absolute; display: inline-flex; align-items: center; gap: 8px;
  background: rgba(20, 25, 31, 0.95); border: 1px solid #2c3846; border-radius: 18px;
  padding: 8px 15px; font-family: var(--mono); font-size: 0.8rem; color: var(--acc-bright);
}
.shot-chip.tr { top: -16px; right: -6px; }
.shot-chip.bl { bottom: -16px; left: -6px; }
.shot-chip .sdot { width: 8px; height: 8px; border-radius: 50%; background: var(--acc); box-shadow: 0 0 8px var(--acc); }

/* centered hero + full-width app-shot band below (layout B) */
.hero { border-bottom: none; }
.hero .wrap { grid-template-columns: 1fr; text-align: center; }
.hero .sub { margin-left: auto; margin-right: auto; }
.hero-cta { justify-content: center; }
.shot-band { padding: 16px 0 80px; border-bottom: 1px solid var(--line); }
.shot-band .hero-shot { max-width: 1020px; margin: 0 auto; }
.shot-band .hero-shot img { transform: none; }