/* Crestink × Signal Ink — waitlist landing 2026-09-05 */
:root {
  --ink: #0B0D10;
  --paper: #F4F1EA;
  --signal: #E8FF47;
  --steel: #8B939E;
  --line: #1A1F26;
  --line-on-paper: #D9D4C8;
  --danger: #FF4D3A;
  --card: #12151A;
  --paper-ink: #0B0D10;
  --warn-bg: #2A2410;
  --warn-fg: #F0E6A8;
  --warn-line: #5C5230;
  --font-display: "IBM Plex Sans", system-ui, sans-serif;
  --font-body: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1120px;
  --form-max: 560px;
  --radius: 10px;
  --banner-h: 40px;
  --header-h: 56px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
body.has-entwurf { padding-top: var(--banner-h); }

img { max-width: 100%; display: block; }
a { color: inherit; }
a:hover { color: var(--signal); }
strong { font-weight: 600; }
ul, ol { margin: 0; padding: 0; }
button, input, select, textarea { font: inherit; }

.wrap {
  width: min(100% - 48px, var(--max));
  margin-inline: auto;
}
@media (max-width: 640px) {
  .wrap { width: min(100% - 32px, var(--max)); }
}

/* Entwurf banner */
.entwurf-banner {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--banner-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--warn-bg);
  color: var(--warn-fg);
  border-bottom: 1px solid var(--warn-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-align: center;
  padding: 0 12px;
}

/* Header */
.site-header {
  position: sticky;
  top: var(--banner-h);
  z-index: 90;
  background: rgba(11, 13, 16, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}
.logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--paper);
}
.logo:hover { color: var(--paper); }
.logo span { color: var(--signal); }
.nav-cta {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink);
  background: var(--signal);
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  letter-spacing: -0.01em;
}
.nav-cta:hover { color: var(--ink); filter: brightness(1.05); }

/* Type */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 1.25rem;
}
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 560;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 0 0 1rem;
}
h1 {
  font-size: clamp(2.25rem, 5.5vw, 4.25rem);
  font-weight: 580;
  max-width: 14ch;
  color: var(--paper);
}
h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  max-width: 28ch;
  color: var(--paper-ink);
}
h3 {
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.lead {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  line-height: 1.55;
  max-width: 38rem;
  margin: 0 0 1.5rem;
  color: rgba(244, 241, 234, 0.78);
}
.section-paper .lead { color: rgba(11, 13, 16, 0.72); }
.micro {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
  margin: 0.85rem 0 0;
  letter-spacing: 0.01em;
}
.micro a { color: var(--steel); text-decoration: underline; text-underline-offset: 2px; }
.micro a:hover { color: var(--signal); }

/* Hero */
.hero {
  min-height: calc(100svh - var(--banner-h) - var(--header-h));
  min-height: max(720px, calc(100svh - var(--banner-h) - var(--header-h)));
  padding: 72px 0 96px;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  gap: 48px;
  align-items: end;
}
@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: center;
  }
}
.hero-copy .lead { color: rgba(244, 241, 234, 0.78); }

/* Inline waitlist form */
.waitlist-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: var(--form-max);
  margin-top: 0.25rem;
}
.waitlist-inline input[type="email"] {
  flex: 1 1 220px;
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--paper);
  border-radius: 999px;
  padding: 0.8rem 1.1rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.waitlist-inline input[type="email"]::placeholder { color: var(--steel); }
.waitlist-inline input[type="email"]:focus {
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(232, 255, 71, 0.15);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  border-radius: 999px;
  padding: 0.8rem 1.25rem;
  transition: filter 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn-signal {
  background: var(--signal);
  color: var(--ink);
}
.btn-signal:hover { filter: brightness(1.06); color: var(--ink); }
.btn-ink {
  background: var(--ink);
  color: var(--signal);
  border: 1px solid var(--ink);
}
.btn-ink:hover { color: var(--signal); filter: brightness(1.1); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--steel); color: var(--paper); }
.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Briefing artifact */
.artifact {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem 1.4rem;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
}
.artifact-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}
.artifact-meta .kw {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--signal);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}
.artifact-meta .label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel);
  letter-spacing: 0.03em;
}
.artifact h3 {
  font-size: 1rem;
  color: var(--paper);
  margin-bottom: 0.85rem;
}
.rival-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.rival-list li {
  display: grid;
  gap: 0.35rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}
.rival-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.rival-name {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.rival-note {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: rgba(244, 241, 234, 0.7);
  line-height: 1.45;
}
.source-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 0.15rem;
}
.chip {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.03em;
  color: var(--steel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
}

/* Paper sections */
.section-paper {
  background: var(--paper);
  color: var(--paper-ink);
  padding: 80px 0;
}
@media (max-width: 640px) {
  .section-paper { padding: 56px 0; }
  .hero { padding: 48px 0 64px; min-height: auto; }
}
.section-paper h2 { color: var(--paper-ink); }
.bullets {
  list-style: none;
  max-width: 36rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.5rem;
}
.bullets li {
  position: relative;
  padding-left: 1.35rem;
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: rgba(11, 13, 16, 0.82);
}
.bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--signal);
  border-radius: 1px;
}

.offer-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
  max-width: 40rem;
}
.offer-item {
  border-top: 1px solid var(--line-on-paper);
  padding-top: 1.15rem;
}
.offer-item .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}
.offer-item p {
  margin: 0;
  font-size: 1.02rem;
  color: rgba(11, 13, 16, 0.8);
}
.note-box {
  margin-top: 2rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line-on-paper);
  border-radius: var(--radius);
  font-size: 0.95rem;
  color: rgba(11, 13, 16, 0.7);
  max-width: 40rem;
}

/* Repeat CTA band */
.cta-band {
  background: var(--ink);
  padding: 72px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.cta-band h2 {
  color: var(--paper);
  max-width: 18ch;
  margin-bottom: 0.75rem;
}
.cta-band .lead {
  color: rgba(244, 241, 234, 0.7);
  margin-bottom: 1.5rem;
}
.cta-band .waitlist-block {
  max-width: var(--form-max);
}
.full-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.full-form label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--steel);
  display: block;
  margin-bottom: 0.35rem;
}
.full-form input[type="email"],
.full-form input[type="text"],
.full-form select {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--paper);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  outline: none;
}
.full-form input:focus,
.full-form select:focus {
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(232, 255, 71, 0.12);
}
.consent {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: rgba(244, 241, 234, 0.75);
  line-height: 1.45;
}
.consent input {
  margin-top: 0.3rem;
  accent-color: var(--signal);
  flex-shrink: 0;
}
.consent a { color: var(--signal); text-decoration: underline; text-underline-offset: 2px; }
.form-status {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--signal);
  min-height: 1.2em;
  margin: 0.35rem 0 0;
}
.form-status.error { color: var(--danger); }
.optional-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel);
  margin: 0.5rem 0 0;
}

/* FAQ light */
.faq {
  background: var(--paper);
  color: var(--paper-ink);
  padding: 64px 0 72px;
}
.faq h2 { margin-bottom: 1.5rem; }
.faq-list {
  list-style: none;
  max-width: 40rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.faq-list details {
  border-top: 1px solid var(--line-on-paper);
  padding: 1rem 0;
}
.faq-list details:last-child { border-bottom: 1px solid var(--line-on-paper); }
.faq-list summary {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list details p {
  margin: 0.65rem 0 0;
  font-size: 0.98rem;
  color: rgba(11, 13, 16, 0.72);
}
.disclaimer {
  margin-top: 2rem;
  max-width: 40rem;
  font-size: 0.88rem;
  color: rgba(11, 13, 16, 0.55);
  line-height: 1.5;
}

/* Footer */
.site-footer {
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding: 40px 0 48px;
  font-family: var(--font-display);
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-brand {
  font-weight: 600;
  letter-spacing: -0.03em;
  font-size: 1rem;
}
.footer-brand span { color: var(--signal); }
.footer-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--steel);
  letter-spacing: 0.02em;
  margin-top: 0.4rem;
  line-height: 1.6;
}
.footer-links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.9rem;
}
.footer-links a {
  text-decoration: none;
  color: rgba(244, 241, 234, 0.75);
}
.footer-links a:hover { color: var(--signal); }
.dns-line {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--steel);
  letter-spacing: 0.03em;
}

/* Legal pages */
body.legal-page { background: var(--paper); color: var(--paper-ink); }
body.legal-page .site-header {
  background: rgba(244, 241, 234, 0.9);
  border-bottom-color: var(--line-on-paper);
}
body.legal-page .logo { color: var(--ink); }
body.legal-page .logo:hover { color: var(--ink); }
body.legal-page .nav-cta { /* keep signal */ }
.legal-main {
  padding: 48px 0 80px;
  max-width: 42rem;
}
.legal-main h1 {
  color: var(--ink);
  max-width: none;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  margin-bottom: 0.75rem;
}
.legal-main h2 {
  font-size: 1.15rem;
  margin-top: 2rem;
  margin-bottom: 0.65rem;
  max-width: none;
}
.legal-main p, .legal-main li {
  font-family: var(--font-body);
  font-size: 1rem;
  color: rgba(11, 13, 16, 0.82);
  line-height: 1.55;
}
.legal-main ul { padding-left: 1.2rem; margin: 0.5rem 0; }
.legal-main a { color: #1a4a8a; }
.legal-main a:hover { color: #0b2e5c; }
.ph {
  background: #ffe8e8;
  color: #8b1a1a;
  padding: 0 0.25em;
  border-radius: 3px;
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 0.85em;
}
.legal-back {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
  text-decoration: none;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}
.legal-back:hover { color: var(--ink); }
body.legal-page .site-footer {
  background: var(--ink);
}
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}