/* =====================================================================
   css/rs/seiten.css — Für DJs, Kontakt, Impressum/Datenschutz, 404 (re:signal, 26.09.2026)
   Umsetzer „seiten“. Präfix sei-. Basisklassen (rs-*) kommen aus css/resignal.css.
   ===================================================================== */

/* ---------- Gemeinsam ---------- */
.sei-seite {
  position: relative; isolation: isolate;
  background: var(--ru-ink-2);
  padding: clamp(28px, 3vw, 44px) 0 clamp(40px, 5vw, 72px);
  border-bottom: 1px solid var(--ru-line-2);
}
/* Show-Tönung als ruhiges Licht auf der Tinte-2-Fläche */
.sei-seite::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 520px; z-index: -1; pointer-events: none;
  background: radial-gradient(70% 90% at 85% -20%, color-mix(in srgb, var(--ru-tint) 30%, transparent), transparent 70%);
  transition: background 1.2s ease;
}
/* Footer-Abstand: die Seite endet selbst mit einer Fläche */
body[data-page="dj"] .site-footer, body[data-page="kontakt"] .site-footer,
body[data-page="impressum"] .site-footer, body[data-page="datenschutz"] .site-footer,
body[data-page="404"] .site-footer { margin-top: 0 !important; }

.sei-sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.sei-honig { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.sei-lead { font: 500 16px/1.5 var(--ru-f-text); color: var(--ru-paper); max-width: 480px; margin: 0; }
.sei-lead--klein { font-size: 15px; color: var(--ru-paper-70); }
.sei-proto { display: flex; flex-direction: column; gap: 0; margin: 0; font: 500 13px/1.8 var(--ru-f-mono); color: var(--ru-paper); opacity: .85; }
.sei-proto--eine { display: block; font-size: 12px; opacity: .7; margin-top: 14px; }
.sei-proto a { color: inherit; text-decoration: underline; text-decoration-color: var(--ru-line); text-underline-offset: 3px; }
.sei-proto a:hover { color: var(--ru-cyan); }
.sei-h2 { font: 900 clamp(26px, 3vw, 40px)/.95 var(--ru-f-disp); text-transform: uppercase; letter-spacing: -.04em; margin: 4px 0 0; }

/* ---------- Formular (rs-form) ---------- */
.sei-form { display: flex; flex-direction: column; gap: 10px; margin: 0; min-width: 0; }
.sei-form__zwei { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sei-feld { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.sei-feld__lab { margin-top: 6px; }
.sei-form input[type=text], .sei-form input[type=email], .sei-form input[type=url], .sei-form textarea {
  margin: 0; box-shadow: none; -webkit-appearance: none; appearance: none; min-height: 46px;
  text-overflow: ellipsis;
}
.sei-form :is(input[type=text], input[type=email], input[type=url], textarea) {
  background: transparent; color: var(--ru-paper); border: 1.5px solid var(--ru-line); border-radius: var(--ru-r-1); font-family: var(--ru-f-text);
}
.sei-form :is(input, textarea):focus { border-color: var(--ru-cyan); box-shadow: none; outline: 0; }
.sei-form :is(input, textarea):user-invalid:not(:focus) { border-color: var(--ru-magenta); }
.sei-form textarea { resize: vertical; min-height: 96px; line-height: 1.5; }
.sei-form :is(input, textarea):user-invalid { border-color: var(--ru-magenta); }
.sei-hint { font: 500 11px/1.5 var(--ru-f-mono); color: var(--ru-paper-50); letter-spacing: .02em; }
.sei-wahl { border: 0; margin: 6px 0 0; padding: 0; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.sei-wahl legend { padding: 0; margin-bottom: 6px; }
.sei-wahl__zusatz { opacity: .75; text-transform: none; letter-spacing: .02em; }
.sei-kacheln { display: grid; gap: 6px; }
.sei-kacheln--vier { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.sei-kacheln--fuenf { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.sei-kacheln--anliegen { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.sei-kacheln--neben { grid-template-columns: repeat(2, max-content); }

.sei-tile { position: relative; justify-content: center; min-height: 46px; line-height: 1.3; user-select: none; overflow-wrap: anywhere; transition: background .15s ease, color .15s ease, border-color .15s ease; }
.sei-tile[style*="--k"] { box-shadow: inset 3px 0 0 var(--k); }
.sei-tile[style*="--k"]:has(input:checked) { box-shadow: inset 3px 0 0 var(--k), 0 0 0 0 transparent; }
.sei-tile:has(input:focus-visible) { outline: 2px solid var(--ru-cyan); outline-offset: 2px; }
.sei-tile--mitte { text-align: center; align-items: center; }
.sei-tile--klein { min-height: 0; padding: 8px 12px; font-size: 11px; }

.sei-form__fuss { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 8px; }
.sei-form__pflicht { opacity: .55; }
.sei-msg { flex-basis: 100%; margin: 0; font: 600 12px/1.5 var(--ru-f-mono); letter-spacing: .04em; min-height: 0; }
.sei-msg:empty { display: none; }
.sei-msg[data-kind="ok"] { color: var(--ru-cyan); }
.sei-msg[data-kind="err"] { color: var(--ru-magenta); }
.sei-klein { margin: 4px 0 0; font: 500 12px/1.55 var(--ru-f-text); color: var(--ru-paper-50); max-width: 620px; }
.sei-klein a { color: var(--ru-paper-70); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Für DJs (Screen 10 / Handy 12) ---------- */
.sei-dj__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 44px; align-items: start; }
.sei-dj__intro { position: sticky; top: calc(var(--header-h) + 28px); }
.sei-dj__intro-in {
  min-height: calc(100vh - var(--header-h) - var(--player-h) - 72px);
  display: flex; flex-direction: column; justify-content: flex-end; gap: 18px; padding-bottom: 12px;
}
.sei-dj__titel { font-size: clamp(40px, 6.7vw, 96px); }
.sei-weiter { display: inline-flex; align-items: center; gap: 10px; color: var(--ru-paper); text-decoration: none; opacity: .85; margin-top: 4px; align-self: flex-start; }
.sei-weiter:hover { opacity: 1; color: var(--ru-cyan); }
.sei-weiter .rs-colon { font-size: 5px; gap: 3px; }
.sei-dj .sei-form { padding-bottom: 12px; }

.sei-band { padding-top: clamp(44px, 6vw, 88px); }
.sei-band__kopf { display: flex; flex-direction: column; gap: 4px; margin-bottom: 22px; }
.sei-schritte { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--ru-line); }
.sei-schritt { padding: 18px 22px 8px 0; border-right: 1px solid var(--ru-line-2); margin-right: 22px; display: flex; flex-direction: column; gap: 8px; }
.sei-schritt:last-child { border-right: 0; margin-right: 0; }
.sei-schritt__n { font: 600 12px var(--ru-f-mono); letter-spacing: .1em; color: var(--ru-cyan); }
.sei-schritt h3 { font: 700 17px/1.1 var(--ru-f-disp); text-transform: uppercase; letter-spacing: -.02em; margin: 0; }
.sei-schritt p { font: 500 14px/1.55 var(--ru-f-text); color: var(--ru-paper-70); margin: 0; }
.sei-band--zwei { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.sei-liste { list-style: none; margin: 18px 0 0; padding: 0; border-top: 1px solid var(--ru-line); }
.sei-liste .rs-li { font: 500 15px/1.45 var(--ru-f-text); align-items: baseline; }
.sei-liste__n { font: 600 11px var(--ru-f-mono); letter-spacing: .1em; opacity: .6; flex: none; width: 22px; }
.sei-liste__dia { width: 8px; height: 8px; flex: none; transform: rotate(45deg) translateY(-2px); background: var(--ru-cyan); }
.sei-band__knopf { margin-top: 22px; }

/* ---------- Kontakt (Screen 12 / Handy 14) ---------- */
.sei-kontakt__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 44px; align-items: end; }
.sei-kontakt__form { display: flex; flex-direction: column; gap: 10px; }
.sei-kontakt__form > .rs-pt { margin-bottom: 4px; }
.sei-kontakt__form .sei-lead { margin-bottom: 8px; }
.sei-kontakt__faq { padding-bottom: 12px; }
.sei-faq { border-top: 1px solid var(--ru-line); margin-top: 8px; }
.sei-faq__item { border-bottom: 1px solid var(--ru-line); }
.sei-faq__item summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 13px 0; font: 600 15px/1.4 var(--ru-f-text); color: var(--ru-paper);
}
.sei-faq__item summary::-webkit-details-marker { display: none; }
.sei-faq__item summary:hover { color: var(--ru-cyan); }
.sei-faq__zeichen { font: 500 16px/1 var(--ru-f-mono); flex: none; width: 14px; text-align: center; }
.sei-faq__zeichen::before { content: "+"; }
.sei-faq__item[open] .sei-faq__zeichen::before { content: "–"; }
.sei-faq__a { font: 500 14px/1.6 var(--ru-f-text); color: var(--ru-paper-70); padding: 0 30px 16px 0; margin-top: -4px; }

.sei-wege { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; }
.sei-weg { border-top: 1px solid var(--ru-line); padding: 16px 22px 0 0; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.sei-weg + .sei-weg { padding-left: 22px; border-left: 1px solid var(--ru-line-2); }
.sei-weg p { margin: 0; }
.sei-weg__gross { font: 800 17px/1.25 var(--ru-f-text); color: var(--ru-paper); text-decoration: none; overflow-wrap: anywhere; }
.sei-weg__gross:hover { color: var(--ru-cyan); }
.sei-weg__m { font: 500 12px/1.5 var(--ru-f-mono); color: var(--ru-paper-70); }
.sei-weg__text { font: 500 13px/1.55 var(--ru-f-text); }
.sei-weg__text a { color: var(--ru-paper); text-decoration: underline; text-underline-offset: 3px; }
.sei-weg__social { display: flex; flex-wrap: wrap; gap: 6px 16px; font: 600 12px/1.8 var(--ru-f-mono); text-transform: uppercase; letter-spacing: .08em; }
.sei-weg__social a { color: var(--ru-paper); text-decoration: none; border-bottom: 1.5px solid var(--ru-line); }
.sei-weg__social a:hover { color: var(--ru-cyan); border-bottom-color: var(--ru-cyan); }

/* ---------- Impressum / Datenschutz (Screen 13 / Handy 16) ---------- */
.sei-recht__grid { display: grid; grid-template-columns: 380px minmax(0, 1fr); gap: 44px; align-items: start; }
.sei-recht__seite { position: sticky; top: calc(var(--header-h) + 28px); }
.sei-recht__kleb { display: flex; flex-direction: column; gap: 14px; }
.sei-recht__ober { margin: 0; }
.sei-recht__titel { font-size: 34px; line-height: 1; overflow-wrap: anywhere; hyphens: manual; }
.sei-recht__seg { flex-direction: column; align-self: flex-start; }
.sei-recht__seg > a { text-align: left; }
.sei-recht__fuss { font-size: 12px; opacity: .75; margin-top: 10px; }
.sei-recht__fuss span { opacity: .7; }
.sei-toc p { margin: 8px 0 4px; }
.sei-toc ol { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ru-line-2); }
.sei-toc a { display: flex; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--ru-line-2); color: var(--ru-paper-70); text-decoration: none; font: 500 13px/1.35 var(--ru-f-text); }
.sei-toc a:hover { color: var(--ru-cyan); }
.sei-toc b { font: 600 11px/1.6 var(--ru-f-mono); color: var(--ru-cyan); width: 12px; flex: none; }

.sei-prose { max-width: 720px; font: 500 15px/1.7 var(--ru-f-text); color: var(--ru-paper); overflow-wrap: break-word; }
.sei-prose > :first-child { margin-top: 0; }
.sei-prose h2 {
  font: 700 13px/1.4 var(--ru-f-disp); text-transform: uppercase; letter-spacing: .02em; color: var(--ru-paper);
  margin: 36px 0 10px; padding-top: 14px; border-top: 1px solid var(--ru-line-2);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.sei-prose > h2:first-child { border-top: 0; padding-top: 0; }
.sei-prose p { margin: 0 0 14px; color: var(--ru-paper-70); }
.sei-prose strong { color: var(--ru-paper); font-weight: 800; }
.sei-prose em { font-style: normal; font: 600 11px/1.8 var(--ru-f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ru-paper); opacity: .8; }
.sei-prose a { color: var(--ru-paper); text-decoration: underline; text-decoration-color: var(--ru-cyan); text-underline-offset: 3px; }
.sei-prose a:hover { color: var(--ru-cyan); }
.sei-prose code { font: 500 13px var(--ru-f-mono); background: rgba(245,239,230,.08); border-radius: 3px; padding: 1px 5px; color: var(--ru-paper); }

/* ---------- 404 „Kein Signal“ (Screen 14 / Handy 17) ---------- */
.sei-404 {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: calc(100vh - var(--header-h) - var(--player-h) - var(--tabbar-h));
  min-height: calc(100svh - var(--header-h) - var(--player-h) - var(--tabbar-h) - env(safe-area-inset-bottom));
  display: flex; align-items: flex-end;
}
.sei-404__bild { position: absolute; inset: -6%; z-index: -2; }
.sei-404__bild img { width: 100%; height: 100%; object-fit: cover; filter: saturate(1.4) blur(14px); }
.sei-404__tint { position: absolute; inset: 0; z-index: -1; background: rgba(13,10,31,.84); }
.sei-404__inhalt { width: 100%; display: flex; flex-direction: column; gap: 20px; padding-top: 44px; padding-bottom: 44px; }
.sei-404__band { height: 44px; color: var(--ru-paper); opacity: .35; margin-bottom: 8px; }
.sei-404__band .rs-fq { gap: 3px; }
.sei-404__band .rs-fq.still i { transform: scaleY(.08); animation: none !important; }
.sei-404 .rs-lab2 { margin: 0; }
.sei-404__kopf { display: flex; gap: 28px; align-items: flex-start; }
.sei-404__colon { display: inline-flex; flex-direction: column; gap: 22px; font-size: 44px; margin-top: 14px; flex: none; }
.sei-404__colon i { width: 1em; height: 1em; border-radius: 50%; display: block; animation: ru-load 1.2s ease-in-out infinite; }
.sei-404__colon i:first-child { background: var(--ru-cyan); }
.sei-404__colon i:last-child { background: var(--ru-magenta); animation-delay: .6s; }
.sei-404__titel { font-size: clamp(60px, 9.2vw, 132px); line-height: .9; margin: 0; }
.sei-404__txt { font: 500 18px/1.5 var(--ru-f-text); max-width: 560px; margin: 0; }
.sei-404__weiter { display: inline-flex; align-items: center; gap: 10px; margin: 0; color: var(--ru-cyan); }
.sei-404__weiter .rs-colon { font-size: 5px; gap: 3px; }
.sei-404__knoepfe { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.sei-404__an { display: none; }
body[data-playing="true"] .sei-404__an { display: inline; }
body[data-playing="true"] .sei-404__aus { display: none; }
body[data-playing="true"] .sei-404__play .rs-play { display: none; }
body[data-playing="true"] .sei-404__play::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ru-magenta); animation: ru-p1 .92s ease-in-out infinite; }

/* ---------- Tablet ---------- */
@media (max-width: 1100px) {
  .sei-kacheln--vier { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sei-schritte { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sei-schritt:nth-child(2) { border-right: 0; margin-right: 0; }
  .sei-wege { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 22px; }
  .sei-weg:nth-child(3) { padding-left: 0; border-left: 0; }
  .sei-recht__grid { grid-template-columns: 280px minmax(0, 1fr); gap: 32px; }
  .sei-recht__titel { font-size: 28px; }
}

/* ---------- Handy ---------- */
@media (max-width: 820px) {
  .sei-seite { padding: 18px 0 36px; }
  .sei-seite::before { height: 360px; }
  .sei-lead { font-size: 13px; }
  .sei-proto { font-size: 12px; line-height: 1.7; }

  .sei-dj__grid, .sei-kontakt__grid, .sei-band--zwei { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .sei-dj__intro { position: static; }
  .sei-dj__intro-in { min-height: 0; gap: 10px; padding: 0; }
  .sei-dj__titel, .sei-kontakt .rs-pt { font-size: 40px; line-height: 1; }
  .sei-form { gap: 10px; }
  .sei-form__zwei { grid-template-columns: 1fr; }
  .sei-form input[type=text], .sei-form input[type=email], .sei-form input[type=url], .sei-form textarea { font-size: 16px; } /* kein Zoom auf iOS */
  .sei-kacheln--vier { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sei-kacheln--fuenf { grid-template-columns: 1fr 1fr; }
  .sei-kacheln--anliegen { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sei-tile { min-height: 44px; padding: 11px 12px; font-size: 11px; }
  .sei-tile--klein { min-height: 0; padding: 8px 10px; }
  .sei-form__fuss .rs-btn { align-self: flex-start; }

  .sei-schritte { grid-template-columns: 1fr; }
  .sei-schritt { border-right: 0; margin-right: 0; padding: 14px 0; border-bottom: 1px solid var(--ru-line-2); }
  .sei-h2 { font-size: 26px; }

  .sei-kontakt__grid { align-items: start; }
  .sei-kontakt__faq { padding-top: 10px; border-top: 1px solid var(--ru-line); padding-bottom: 0; }
  .sei-kontakt__faq .sei-faq { border-top: 0; }
  .sei-faq__item summary { font-size: 13px; padding: 11px 0; }
  .sei-faq__a { font-size: 12px; padding-right: 0; }
  .sei-wege { grid-template-columns: 1fr; row-gap: 0; }
  .sei-weg, .sei-weg + .sei-weg { padding: 14px 0; border-left: 0; }

  .sei-recht__grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .sei-recht__grid > * { min-width: 0; }
  .sei-recht__seg > a:nth-child(3) { display: none; }
  .sei-recht__seite { position: static; }
  .sei-recht__kleb { gap: 12px; }
  .sei-recht__ober { display: none; }
  .sei-recht__seg { flex-direction: row; order: -1; max-width: 100%; overflow-x: auto; scrollbar-width: none; }
  .sei-recht__seg::-webkit-scrollbar { display: none; }
  .sei-recht__seg > a { white-space: nowrap; }
  .sei-recht__titel { font-size: 30px; }
  .sei-toc { display: none; }
  .sei-recht__fuss { display: none; }
  .sei-prose { font-size: 13px; line-height: 1.6; }
  .sei-prose p { margin-bottom: 12px; }
  .sei-prose h2 { font-size: 12px; margin-top: 26px; }

  .sei-404__inhalt { gap: 14px; padding-top: 28px; padding-bottom: 20px; }
  .sei-404__band { height: 28px; margin-bottom: 4px; }
  .sei-404__band .rs-fq { gap: 2px; }
  .sei-404__kopf { gap: 14px; }
  .sei-404__colon { font-size: 22px; gap: 11px; margin-top: 6px; }
  .sei-404__titel { font-size: 60px; }
  .sei-404__txt { font-size: 14px; }
  .sei-404__knoepfe .rs-btn.lg { padding: 14px 18px; font-size: 13px; }
}
@media (max-width: 380px) {
  .sei-404__titel { font-size: 52px; }
  .sei-kacheln--fuenf { grid-template-columns: 1fr; }
}

/* Kontakt: Anliegen-Kacheln (Desktop 4 + 2 klein, Handy 3 × 2 gleich groß) */
.sei-anliegen { display: flex; flex-direction: column; gap: 6px; }
@media (max-width: 820px) {
  .sei-anliegen { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .sei-anliegen > .sei-kacheln { display: contents; }
  .sei-anliegen .sei-tile--klein { min-height: 44px; padding: 11px 8px; font-size: 11px; text-align: center; align-items: center; }
  .sei-anliegen .sei-tile--mitte { padding: 11px 8px; }
  .sei-kontakt textarea { min-height: 96px; height: 110px; }
}