/* avantgarde.codes · Formular „Brief abgeben“ ---------------------------
   Zwei Varianten auf demselben Markup: „satz“ (Brief zum Ausfüllen, Standard)
   und „klar“ (klassische Felder, Vorschau mit ?brief=klar). */

.brief { position: relative; max-width: 64rem; margin-top: clamp(2.4rem, 5vw, 4rem); }
.brief-bogen { position: relative; }
.brief .feld { display: block; }
.brief .feld-name {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.brief input[type="text"],
.brief input[type="email"],
.brief input[type="tel"],
.brief textarea {
  width: 100%;
  margin: 0;
  padding: 0.4rem 0.1rem;
  font: inherit;
  color: var(--ink);
  background-color: transparent;
  border: 0;
  border-bottom: 1px solid var(--ink-faint);
  border-radius: 0;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.2s, background-color 0.2s;
}
.brief input::placeholder,
.brief textarea::placeholder { color: var(--ink-faint); opacity: 1; }
.brief input:focus-visible,
.brief textarea:focus-visible { border-bottom-color: var(--ember); background-color: rgba(196, 80, 30, 0.06); }
.brief [aria-invalid="true"] { border-bottom-color: var(--ember); }
.brief textarea { display: block; resize: vertical; min-height: 9rem; line-height: 1.6; }

/* Anliegen als Wahl-Chips */
.brief-anliegen {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.6rem;
  min-width: 0;
  margin: 1.8rem 0 0;
  padding: 0;
  border: 0;
}
.brief-anliegen legend { float: left; margin: 0 0.4rem 0 0; padding: 0; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; inset: 0; margin: 0; opacity: 0; cursor: pointer; }
.chip span {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
  border: 1px solid var(--ink-faint);
  border-radius: 999px;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.chip:hover span { border-color: var(--ink); }
.chip input:checked + span { background: var(--ink); border-color: var(--ink); color: var(--cream); }
.chip input:focus-visible + span { outline: 2px solid var(--ember); outline-offset: 3px; }

.feld-text { margin-top: 1.8rem; }
.brief-ok {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  max-width: 44rem;
  margin-top: 1.4rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--ink-soft);
  cursor: pointer;
}
.brief-ok input { flex: none; width: 1.1rem; height: 1.1rem; margin: 0.15rem 0 0; accent-color: var(--ink); }
.brief-ok a { color: inherit; }
.brief-falle { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.brief-fuss { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.6rem; margin-top: 2rem; }
.brief-status { margin: 0; min-height: 1.4em; color: var(--ink-soft); }
.brief-status[data-art="fehler"] { color: var(--ember); }
.brief-status[data-art="ok"] { color: var(--ink); }
.brief-alt { margin-top: 1.4rem; color: var(--ink-soft); }
.brief-alt a { color: inherit; }

/* Zustände: wird gesendet, ist zugestellt (Stempel) */
.brief.is-sending .btn { opacity: 0.55; pointer-events: none; }
.brief.is-sent .brief-satz,
.brief.is-sent .brief-anliegen,
.brief.is-sent .feld-text,
.brief.is-sent .brief-ok { opacity: 0.5; transition: opacity 0.6s; }
.brief.is-sent .btn { pointer-events: none; }
.brief-stempel {
  position: absolute;
  top: clamp(0.8rem, 3vw, 2rem);
  right: clamp(0.8rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.55rem 0.9rem;
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ember);
  border: 2px solid var(--ember);
  outline: 1px solid var(--ember);
  outline-offset: 3px;
  text-shadow: 1px 0 0 var(--ab-r), -1px 0 0 var(--ab-b);
  opacity: 0;
  transform: rotate(-9deg) scale(1.7);
  transition: opacity 0.2s, transform 0.5s cubic-bezier(0.2, 1.5, 0.4, 1);
  pointer-events: none;
}
.brief-stempel span { font-size: 0.66rem; letter-spacing: 0.16em; }
.brief.is-sent .brief-stempel { opacity: 0.92; transform: rotate(-9deg) scale(1); }
.brief.is-sent #briefDatum { visibility: hidden; }

/* Variante „satz“: der Brief als Satz zum Ausfüllen */
.brief[data-variante="satz"] .brief-bogen {
  padding: clamp(1.4rem, 4vw, 3.2rem);
  background: var(--paper);
  border: 1px solid rgba(26, 22, 17, 0.12);
  box-shadow: 0 34px 60px -44px rgba(26, 22, 17, 0.55);
}
.brief-kopf {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 1.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.brief[data-variante="satz"] .brief-satz { margin: 0; font-size: clamp(1.3rem, 2.3vw, 2rem); line-height: 1.85; }
.brief[data-variante="satz"] .brief-satz .feld { display: inline; }
.brief[data-variante="satz"] .feld-name {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.brief[data-variante="satz"] .brief-satz input {
  display: inline-block;
  width: 9ch;
  min-width: 4ch;
  max-width: 100%;
  padding: 0 0.06em;
  color: var(--bronze);
  border-bottom: 2px solid var(--ink);
}
.brief[data-variante="satz"] .brief-anliegen legend { font-size: clamp(1.3rem, 2.3vw, 2rem); line-height: 1.4; }
.brief[data-variante="satz"] .chip span {
  padding: 0.35rem 0.95rem;
  font-family: var(--serif);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  letter-spacing: 0;
}
.brief[data-variante="satz"] .feld-text textarea {
  min-height: 10.5rem;
  padding: 0 0.1rem;
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 2.1rem;
  color: var(--bronze);
  border-bottom: 0;
  background-image: repeating-linear-gradient(to bottom,
    transparent 0, transparent calc(2.1rem - 1px),
    rgba(26, 22, 17, 0.16) calc(2.1rem - 1px), rgba(26, 22, 17, 0.16) 2.1rem);
  background-attachment: local;
}

/* Variante „klar“: klassische Felder */
.brief[data-variante="klar"] .brief-kopf,
.brief[data-variante="klar"] .bs { display: none; }
.brief[data-variante="klar"] .brief-bogen { padding-top: 2rem; border-top: 1px solid var(--ink-faint); }
.brief[data-variante="klar"] .brief-satz {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.6rem 2rem;
  margin: 0;
  font-family: var(--sans);
  font-size: 1.1rem;
}
.brief[data-variante="klar"] .brief-anliegen legend {
  float: none;
  width: 100%;
  margin: 0 0 0.6rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.brief[data-variante="klar"] .feld-text textarea { font-size: 1.1rem; }
/* Stempel neben die Absende-Zeile statt über die Felder */
.brief[data-variante="klar"] .brief-stempel { top: auto; bottom: 0; }

@media (max-width: 760px) {
  .brief[data-variante="klar"] .brief-satz { grid-template-columns: 1fr; }
  .brief[data-variante="klar"] .brief-stempel { top: 1.2rem; bottom: auto; }
}
@media (max-width: 600px) {
  .brief[data-variante="satz"] .brief-satz,
  .brief[data-variante="satz"] .brief-anliegen legend { font-size: 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  .brief-stempel { transform: rotate(-9deg); transition: opacity 0.2s; }
}