/* =====================================================================
   Xyntal – Startseite als Brief
   Eine schmale Textspalte in Serifenschrift auf dunklem Grau. Keine Sektionen,
   keine Labels, keine Boxen, keine Effekte. Das Logo bleibt das einzige
   bunte Element. Kopf- und Fußzeile werden hier auf hell gedreht.
   ===================================================================== */
:root {
  --paper: #1C1C1C;
  --paper-2: #262626;
  --ink: #ECEAE4;
  --ink-2: #A09E98;
  --ink-3: #73716B;
  --rule: #333333;
  --rule-2: #4A4A4A;
  --link: #ECEAE4;

  --f-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --f-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; background: var(--paper); scroll-padding-top: 72px; }
[hidden] { display: none !important; }
body {
  margin: 0; min-height: 100vh;
  background: var(--paper); color: var(--ink);
  font: 400 19px/1.6 var(--f-serif);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
}
p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: var(--link); text-decoration: underline; text-decoration-color: var(--rule-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ink); }
button, input { font: inherit; color: inherit; }
::selection { background: var(--ink); color: var(--paper); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 16px; top: 10px; z-index: 100; padding: 10px 14px; background: var(--ink); color: var(--paper); font: 600 14px/1 var(--f-sans); text-decoration: none; transform: translateY(-200%); }
.skip:focus { transform: none; }

/* ---------- Der Brief ---------- */
.letter {
  width: min(38rem, 100% - 2rem);
  margin: 0 auto;
  padding: clamp(40px, 8vw, 96px) 0 clamp(48px, 8vw, 96px);
  display: grid; gap: 1.25em;
}
@media (min-width: 760px) { .letter { margin-left: max(1rem, calc((100% - 38rem) * 0.38)); } }
.letter-date { font: 500 13px/1.6 var(--f-mono); letter-spacing: 0.04em; color: var(--ink-3); margin-bottom: 1.5em; }
.letter ul { display: grid; gap: 0.6em; padding-left: 1.4em; }
.letter li { position: relative; }
.letter li::before { content: "–"; position: absolute; left: -1.4em; color: var(--ink-3); }
.letter b { font-weight: 600; }
.letter-cta { margin: 0.5em 0; }
.letter-sign { margin-top: 1.5em; font-size: 1.9em; line-height: 1.1; font-style: italic; font-weight: 400; }
.letter-sign span { display: block; margin-top: 0.5em; font: 400 14px/1.6 var(--f-sans); font-style: normal; color: var(--ink-2); }
.letter-sign span a { color: inherit; }

.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 26px;
  background: var(--ink); color: var(--paper);
  border: 1px solid var(--ink); border-radius: 2px;
  font: 500 16px/1 var(--f-sans); text-decoration: none; white-space: nowrap; cursor: pointer;
  transition: background-color 120ms ease, color 120ms ease;
}
.button:hover, .button:focus-visible { background: transparent; color: var(--ink); }
.button:disabled { background: var(--rule); border-color: var(--rule); color: var(--ink-3); cursor: not-allowed; }
.button-quiet { background: transparent; color: var(--ink); }
.button-quiet:hover, .button-quiet:focus-visible { background: var(--ink); color: var(--paper); }

/* ---------- PS: Newsletter ---------- */
.letter-ps { margin-top: 2em; padding-top: 2em; border-top: 1px solid var(--rule); display: grid; gap: 1em; font-size: 0.92em; color: var(--ink-2); }
.letter-ps b { color: var(--ink); }
.waitlist-form { display: grid; gap: 12px; font-family: var(--f-sans); }
.waitlist-row { display: grid; grid-template-columns: 1fr auto; max-width: 30rem; border: 1px solid var(--rule-2); border-radius: 2px; background: var(--paper-2); }
.waitlist-row input { min-width: 0; height: 46px; padding: 0 14px; border: 0; background: transparent; color: var(--ink); font-size: 16px; }
.waitlist-row input::placeholder { color: var(--ink-3); }
.waitlist-row input:focus-visible { outline-offset: -2px; }
.waitlist-row input[aria-invalid="true"] { box-shadow: inset 0 -2px 0 #E0705F; }
.waitlist-row .button { border: 0; border-left: 1px solid var(--rule-2); border-radius: 0; min-height: 46px; padding: 0 18px; font-size: 15px; }
.waitlist-check { display: grid; grid-template-columns: 18px 1fr; gap: 10px; max-width: 30rem; font-size: 13.5px; line-height: 1.5; color: var(--ink-2); cursor: pointer; }
.waitlist-check input { appearance: none; width: 18px; height: 18px; margin: 1px 0 0; border: 1px solid var(--rule-2); border-radius: 2px; background: var(--paper-2); cursor: pointer; display: grid; place-items: center; }
.waitlist-check input:checked { background: var(--ink); border-color: var(--ink); }
.waitlist-check input:checked::before { content: ""; width: 8px; height: 5px; border-left: 2px solid var(--paper); border-bottom: 2px solid var(--paper); transform: translateY(-1px) rotate(-45deg); }
.waitlist-hp { position: absolute; left: -9999px; }
.waitlist-status { font-size: 14px; line-height: 1.5; color: var(--ink-2); max-width: 30rem; }
.waitlist-status:empty { display: none; }
.waitlist-status.is-ok { color: var(--ink); }
.waitlist-status.is-error { color: #E0705F; }
.waitlist-status span + span { display: block; margin-top: 4px; }
.invite { display: grid; gap: 10px; max-width: 30rem; padding: 14px; border: 1px solid var(--rule-2); font-size: 14px; color: var(--ink-2); background: var(--paper-2); }
.invite .lp-icon { display: none; }
.invite-head { font-weight: 600; color: var(--ink); }
.invite-row { display: grid; grid-template-columns: 1fr auto; border: 1px solid var(--rule-2); }
.invite-row input { min-width: 0; height: 40px; padding: 0 12px; border: 0; background: transparent; color: var(--ink); font: 500 13px/1 var(--f-mono); }
.invite-row .btn { min-height: 40px; padding: 0 14px; border: 0; border-left: 1px solid var(--rule-2); background: var(--ink); color: var(--paper); font: 500 14px/1 var(--f-sans); cursor: pointer; }
.invite-count { font-size: 13px; color: var(--ink-3); }
body.is-member .news { display: none; }

/* ---------- Kopfzeile ---------- */
body.brief .nav { background: var(--paper) !important; border-bottom: 1px solid var(--rule) !important; font-family: var(--f-sans); }
body.brief .nav .logo { color: var(--ink); }
body.brief .nav .nav-links a { color: var(--ink-2); }
body.brief .nav .nav-links a:hover { color: var(--ink); }
body.brief .nav .nav-links a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -1px 0 var(--ink); }
body.brief .nav .nav-links .nav-cta { background: var(--ink) !important; border-color: var(--ink); color: var(--paper) !important; }
body.brief .nav .nav-links .nav-cta:hover { background: transparent !important; color: var(--ink) !important; }
body.brief .nav .nav-toggle { color: var(--ink); border-color: var(--rule-2); }
body.brief .nav .nav-links.open { background: var(--paper); border-bottom-color: var(--rule); }
body.brief .nav .cmdk-trigger { color: var(--ink-3); border-color: var(--rule); }
body.brief .nav .cmdk-trigger kbd { background: var(--paper-2); color: var(--ink-2); }
body.brief .nav .lang-switch { border-color: var(--rule-2); }
body.brief .nav .lang-switch button { color: var(--ink-2); }
body.brief .nav .lang-switch button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
body.brief .acct-btn { border-color: var(--rule-2) !important; background: transparent !important; color: var(--ink) !important; }
body.brief .acct-menu { background: var(--paper-2) !important; border-color: var(--rule-2) !important; color: var(--ink); }
body.brief .acct-menu a { color: var(--ink) !important; }
body.brief .cmdk { background: rgba(0, 0, 0, 0.5); }
body.brief .cmdk-box { background: var(--paper-2); border-color: var(--rule-2); color: var(--ink); }
body.brief .cmdk-input input { color: var(--ink); }
body.brief .cmdk-item { color: var(--ink-2); }
body.brief .cmdk-item[aria-selected="true"] { background: var(--paper-2); color: var(--ink); }
body.brief .cmdk-item[aria-selected="true"] .g, body.brief .cmdk-item mark { color: var(--link); }

/* ---------- Fußzeile ---------- */
body.brief .site-footer {
  --sf-text: var(--ink); --sf-text-2: var(--ink-2); --sf-text-3: var(--ink-3); --sf-line: var(--rule); --sf-accent: var(--ink);
  margin-top: 0; font-family: var(--f-sans);
}
body.brief .site-footer a { text-decoration: none; }
body.brief .sf-btn { border-color: var(--rule-2); }
body.brief .sf-btn-primary { background: var(--ink); border-color: var(--ink); color: var(--paper) !important; }
body.brief .sf-btn-primary:hover { background: transparent; color: var(--ink) !important; }

@media (prefers-reduced-motion: reduce) { .button { transition: none; } }
@media (forced-colors: active) { .button { border: 1px solid ButtonText; } }