/* Code-Raster -- Farben und Formensprache wie die uebrigen
   Jg6-Tools (vgl. evaBlackbox.css, morseCode.css). */

:root {
  --cr-primary: #4a6cf7;
  --cr-primary-dark: #3a5be0;
  --cr-ink: #2f3542;
  --cr-bg: #eef2f7;
  --cr-right: #2ecc71;
  --cr-wrong: #ff4a4a;
  --cr-gold: #ffd24a;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--cr-bg);
  color: #333;
}

.cr-screen {
  max-width: 1060px;
  margin: 0 auto;
  padding: 30px 24px 60px 24px;
}

.cr-title {
  margin: 0 0 10px 0;
  font-size: 2rem;
  color: var(--cr-ink);
  text-align: center;
}

.cr-subtitle {
  margin: 0 auto 26px auto;
  max-width: 680px;
  text-align: center;
  line-height: 1.55;
  color: #555;
}

/* ---------- Zweispaltig: Raster links, Werkzeuge rechts ---------- */

.cr-arbeitsflaeche {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 268px;
  gap: 28px;
  align-items: start;
}

/* Beide Spalten duerfen schrumpfen -- ohne min-width:0 sprengt das
   Raster in engen Fenstern das Grid. */
.cr-haupt { min-width: 0; }
.cr-neben { min-width: 0; }

/* ---------- Das Raster ----------
   Die Zellen sind bewusst gross und quadratisch: das Muster soll
   auch aus zwei Metern Entfernung noch abmalbar sein. */

.cr-rasterbox {
  display: flex;
  justify-content: center;
}

.cr-raster {
  display: grid;
  gap: 2px;
  padding: 10px;
  background: var(--cr-ink);
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
  width: min(100%, 460px);
  aspect-ratio: 1 / 1;
}

.cr-zelle {
  background: #fff;
  border: none;
  border-radius: 2px;
  padding: 0;
  cursor: pointer;
  transition: background 0.1s ease;
}

.cr-zelle:hover { background: #dfe4ec; }

.cr-zelle--an { background: #11161f; }
.cr-zelle--an:hover { background: #2b3444; }

.cr-zelle:focus-visible {
  outline: 3px solid var(--cr-gold);
  outline-offset: -3px;
}

/* ---------- Rastergroesse ---------- */

.cr-groesse {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
  font-size: 0.95rem;
  color: #555;
}

.cr-chips { display: flex; gap: 8px; }

.cr-chip {
  padding: 8px 18px;
  border: 2px solid #dfe4ec;
  border-radius: 999px;
  background: #fff;
  color: var(--cr-ink);
  font-size: 0.95rem;
  font-weight: bold;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.cr-chip:hover { border-color: var(--cr-primary); background: #f4f7ff; }

.cr-chip--aktiv {
  border-color: var(--cr-primary);
  background: var(--cr-primary);
  color: #fff;
}

/* ---------- Karten ---------- */

.cr-card {
  margin-bottom: 16px;
  padding: 16px 18px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.cr-card__title {
  margin: 0 0 8px 0;
  font-size: 1rem;
  color: var(--cr-ink);
}

.cr-card__text {
  margin: 0 0 10px 0;
  font-size: 0.88rem;
  line-height: 1.45;
  color: #666;
}

.cr-card--merk {
  background: #fff7dc;
  box-shadow: none;
  border-left: 5px solid var(--cr-gold);
}

.cr-liste {
  margin: 0;
  padding-left: 18px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: #5c4b12;
}

/* ---------- Schluesselfelder ---------- */

.cr-schluessel {
  width: 100%;
  height: 42px;
  padding: 0 10px;
  border: 2px solid #c7d0e0;
  border-radius: 8px;
  background: #fff;
  color: var(--cr-ink);
  font-family: "Courier New", monospace;
  font-size: 1rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.cr-schluessel:focus { outline: none; border-color: var(--cr-primary); }
.cr-schluessel[readonly] { background: #f6f8fb; }

/* ---------- Knoepfe ---------- */

.cr-btn-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0 0 0;
}

.cr-btn {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  background: var(--cr-primary);
  color: #fff;
  font-size: 0.95rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}

.cr-btn:hover { background: var(--cr-primary-dark); transform: translateY(-2px); }

.cr-btn--secondary { background: #99a1b3; }
.cr-btn--secondary:hover { background: #808a9e; }

/* ---------- Hinweiszeilen ---------- */

.cr-hinweis {
  min-height: 1.4em;
  margin-top: 8px;
  font-size: 0.85rem;
  text-align: center;
  color: #666;
}

.cr-hinweis--ok    { color: #1f9d55; font-weight: bold; }
.cr-hinweis--fehler { color: #d63a3a; font-weight: bold; }

/* ---------- Schmale Bildschirme ---------- */

@media (max-width: 900px) {
  .cr-arbeitsflaeche { grid-template-columns: 1fr; gap: 18px; }
  .cr-neben { max-width: 460px; margin: 0 auto; }
}

@media (prefers-reduced-motion: reduce) {
  .cr-btn:hover { transform: none; }
  .cr-zelle { transition: none; }
}