/* ------------------------------------------------------------------
   Farben und Grundlagen - angelehnt an den Flyer der Aktion
------------------------------------------------------------------ */
:root {
  --nacht: #0e3a45;
  --nacht-tief: #092630;
  --creme: #fbf3e3;
  --creme-hell: #fffaf0;
  --rot: #c0392b;
  --tanne: #2f6b5b;
  --gold: #e9b44c;
  --text: #24333a;
  --text-leise: #56666e;
  --schatten: 0 14px 30px rgba(9, 38, 48, 0.16);
  --rund: 22px;
  --schrift-zier: "Mountains of Christmas", "Segoe Script", cursive;
  --schrift: "Nunito", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--schrift);
  color: var(--text);
  background: var(--creme);
  line-height: 1.6;
}

main, header, footer { position: relative; z-index: 1; }

.inhalt {
  width: min(1060px, 92vw);
  margin-inline: auto;
}

h1, h2, h3 {
  font-family: var(--schrift-zier);
  line-height: 1.15;
  margin: 0 0 0.4em;
}

a { color: var(--rot); }

/* ------------------------------------------------------------------
   Lichterkette - geht beim Betreten der Seite Birne für Birne an
------------------------------------------------------------------ */
.lichterkette {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 3.4vw, 34px);
  padding: 0 4px;
  margin: 0;
  list-style: none;
  height: 58px;
  border-top: 3px solid #1d3f49;
  background: radial-gradient(circle at 50% -40px, rgba(233, 180, 76, 0.18), transparent 70%);
}

.birne {
  position: relative;
  width: 16px;
  height: 26px;
  border-radius: 50% 50% 46% 46%;
  background: #2c4a52;
  transform: translateY(14px);
  box-shadow: none;
  animation: birne-an 0.5s ease-out forwards;
  animation-delay: calc(var(--i) * 0.11s);
}

.birne::before {
  content: "";
  position: absolute;
  top: -11px;
  left: 50%;
  width: 7px;
  height: 11px;
  transform: translateX(-50%);
  border-radius: 2px 2px 0 0;
  background: #17323b;
}

.birne::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0;
  filter: blur(9px);
  animation: schein-an 0.5s ease-out forwards;
  animation-delay: calc(var(--i) * 0.11s + 0.05s);
}

.birne:nth-child(3n + 1) { transform: translateY(6px); }
.birne:nth-child(3n + 2) { transform: translateY(16px); }
.birne:nth-child(3n)     { transform: translateY(22px); }

.birne:nth-child(4n + 1) { color: #ffd166; }
.birne:nth-child(4n + 2) { color: #ef6461; }
.birne:nth-child(4n + 3) { color: #7fd1ae; }
.birne:nth-child(4n)     { color: #f7f3e6; }

@keyframes birne-an {
  to {
    background: currentColor;
    box-shadow: 0 0 14px 3px currentColor;
  }
}

@keyframes schein-an { to { opacity: 0.55; } }

.lichterkette--unten { transform: scaleY(-1); }

/* ------------------------------------------------------------------
   Kopfbereich
------------------------------------------------------------------ */
.kopf {
  background:
    radial-gradient(circle at 12% 18%, rgba(233, 180, 76, 0.16), transparent 45%),
    radial-gradient(circle at 88% 12%, rgba(127, 209, 174, 0.14), transparent 42%),
    linear-gradient(180deg, var(--nacht-tief), var(--nacht));
  color: var(--creme-hell);
  padding-bottom: 46px;
  text-align: center;
}

/* Das offizielle Logo der Initiative. Fehlt die Datei, blendet app.js die
   Abbildung aus - die Seite bleibt dann trotzdem vollständig. */
.logo {
  margin: 0 auto 2px;
  width: clamp(88px, 12vw, 130px);
}

.logo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 50%;
  filter: drop-shadow(0 10px 26px rgba(0, 0, 0, 0.42));
  animation: logo-auftritt 0.9s ease-out both;
}

@keyframes logo-auftritt {
  from { opacity: 0; transform: scale(0.94) translateY(-10px); }
  to { opacity: 1; transform: none; }
}

.logo[hidden] { display: none; }

.kopf h1 {
  font-size: clamp(2.5rem, 7vw, 4.6rem);
  margin-top: 10px;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.kopf h1 .betont {
  display: block;
  color: var(--gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.72em;
}

.strassen {
  max-width: 720px;
  margin: 18px auto 0;
  padding: 20px 26px;
  border-radius: var(--rund);
  background: rgba(251, 243, 227, 0.1);
  border: 1px solid rgba(251, 243, 227, 0.22);
  font-size: 1.05rem;
}

.strassen strong { color: var(--gold); }

.wimpel {
  display: inline-block;
  margin-bottom: 6px;
  padding: 7px 18px;
  border-radius: 999px;
  background: var(--rot);
  color: var(--creme-hell);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

/* ------------------------------------------------------------------
   Inhaltsbereiche
------------------------------------------------------------------ */
.abschnitt { padding: 52px 0; }

.abschnitt > .inhalt > h2 {
  font-size: clamp(2rem, 4.4vw, 2.9rem);
  color: var(--tanne);
  text-align: center;
}

.abschnitt--info { background: var(--creme-hell); }

.karten {
  display: grid;
  gap: 26px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  margin-top: 26px;
}

.karte {
  background: var(--creme-hell);
  border: 1px solid rgba(14, 58, 69, 0.1);
  border-radius: var(--rund);
  padding: 26px 24px 28px;
  box-shadow: var(--schatten);
}

.karte h3 {
  font-size: 1.9rem;
  color: var(--rot);
}

.karte--suche h3 { color: var(--tanne); }

.karte p.hinweis {
  margin-top: 0;
  color: var(--text-leise);
}

.info-karten {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.info-karte {
  background: var(--creme);
  border-radius: var(--rund);
  padding: 22px 24px;
  border-left: 6px solid var(--gold);
}

.info-karte h3 { color: var(--nacht); font-size: 1.6rem; }
.info-karte p:last-child { margin-bottom: 0; }

/* ------------------------------------------------------------------
   Formulare
------------------------------------------------------------------ */
label {
  display: block;
  margin-top: 16px;
  font-weight: 700;
  font-size: 0.95rem;
}

input,
select {
  width: 100%;
  margin-top: 6px;
  padding: 12px 14px;
  font: inherit;
  color: inherit;
  background: #fff;
  border: 2px solid rgba(14, 58, 69, 0.16);
  border-radius: 12px;
}

select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--nacht) 50%),
    linear-gradient(135deg, var(--nacht) 50%, transparent 50%);
  background-position: right 18px center, right 13px center;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  padding-right: 34px;
  cursor: pointer;
}

.feld-paar {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr minmax(96px, 0.42fr);
  align-items: start;
}

input:focus-visible,
select:focus-visible,
.termin:focus-visible,
button:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

input[aria-invalid="true"],
select[aria-invalid="true"] { border-color: var(--rot); }

.feldfehler {
  display: block;
  margin-top: 5px;
  color: var(--rot);
  font-size: 0.86rem;
  font-weight: 700;
}

fieldset {
  margin: 20px 0 0;
  padding: 0;
  border: 0;
}

legend {
  padding: 0;
  font-weight: 700;
  font-size: 0.95rem;
}

.termine {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.termin {
  padding: 9px 4px;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--nacht);
  background: #fff;
  border: 2px solid rgba(14, 58, 69, 0.16);
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.12s ease;
}

.termin:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--tanne); }

.termin[aria-pressed="true"] {
  background: var(--tanne);
  border-color: var(--tanne);
  color: var(--creme-hell);
}

.termin:disabled {
  cursor: not-allowed;
  color: var(--text-leise);
  background: rgba(14, 58, 69, 0.07);
  border-style: dashed;
  text-decoration: line-through;
}

.termine-laden { color: var(--text-leise); font-size: 0.9rem; }

button.absenden {
  width: 100%;
  margin-top: 22px;
  padding: 14px 18px;
  font: inherit;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--creme-hell);
  background: var(--rot);
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(192, 57, 43, 0.28);
}

.karte--suche button.absenden {
  background: var(--tanne);
  box-shadow: 0 8px 18px rgba(47, 107, 91, 0.28);
}

button.absenden:disabled { opacity: 0.6; cursor: progress; }

.meldung {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  font-weight: 700;
}

.meldung:empty { display: none; }
.meldung[data-art="ok"] { background: rgba(47, 107, 91, 0.12); color: var(--tanne); }
.meldung[data-art="fehler"] { background: rgba(192, 57, 43, 0.1); color: var(--rot); }

/* ------------------------------------------------------------------
   Fuß
------------------------------------------------------------------ */
.fuss {
  background: linear-gradient(180deg, var(--nacht), var(--nacht-tief));
  color: var(--creme-hell);
  text-align: center;
  padding-bottom: 34px;
}

.fuss p { margin: 0; }
.fuss .spruch { font-family: var(--schrift-zier); font-size: 1.8rem; }

.fuss .initiative {
  margin-top: 6px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ------------------------------------------------------------------
   Schnee
------------------------------------------------------------------ */
.schnee {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.flocke {
  position: absolute;
  top: -5vh;
  color: #fff;
  opacity: 0.75;
  text-shadow: 0 0 6px rgba(255, 255, 255, 0.6);
  animation: rieseln linear infinite;
}

@keyframes rieseln {
  from { transform: translate3d(0, -10vh, 0) rotate(0deg); }
  to { transform: translate3d(22px, 110vh, 0) rotate(240deg); }
}

@media (prefers-reduced-motion: reduce) {
  .schnee { display: none; }
  .logo img { animation: none; }
  .birne, .birne::after { animation-duration: 0.01s; animation-delay: 0s; }
  .termin:hover:not(:disabled) { transform: none; }
}