/*
 * Trainer-Design v2 (alle Fächer-Trainer)
 * Wird NACH den seiteneigenen Styles geladen und überschreibt sie gezielt:
 * - Akzentfarbe: Blau aus dem Logo (statt Fachfarbe)
 * - Auswahl-Schritt: ruhige Karten mit Icon-Kachel und Häkchen, Segment-Schalter
 * - Unterthemen-Checkboxen, Icons in Buttons und Schrittleiste
 */

/* ---- Farben: Logo-Blau (auch gegen data-accent-Varianten aus shared-v4.css) ---- */
:root,
:root[data-accent] {
  --accent: #2f6fae;
  --accent-hover: #1c3f66;
  --accent-soft: #e3eef8;
  --accent-glow: rgba(47, 111, 174, .07);
  --lc-accent: #2f6fae;
  --lc-accent-glow: rgba(47, 111, 174, .07);
}

[data-theme="dark"],
:root[data-theme="dark"][data-accent] {
  --accent: #6cb4e6;
  --accent-hover: #8cc8ef;
  --accent-soft: rgba(108, 180, 230, .15);
  --accent-glow: rgba(108, 180, 230, .08);
  --lc-accent: #6cb4e6;
  --lc-accent-glow: rgba(108, 180, 230, .08);
}

/* Fachname im Kopf („Mathematik · Klausurtraining“) im Akzent */
header h1 span { color: var(--accent) }

/* ---- Themen-/Halbjahreskarten ---- */
.hj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: .75rem;
  margin: .75rem 0 1rem
}

.hj-card {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: .85rem;
  align-items: start;
  align-content: start;
  width: 100%;
  min-height: 44px;
  padding: 1rem 2.5rem 1rem 1rem;
  text-align: left;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: .9rem;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color .15s, border-color .15s, box-shadow .15s
}

.hj-card > :not(.hj-icon):not(.hj-check) { grid-column: 2; display: block }

@media (hover: hover) {
  .hj-card:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); background: var(--surface) }
}

.hj-card.selected,
.hj-card.selected:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 6%, var(--surface));
  box-shadow: 0 0 0 1px var(--accent) inset
}

.hj-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px }

.hj-icon {
  grid-column: 1;
  grid-row: 1 / span 3;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: .75rem;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  margin: 0;
  font-size: 0
}

.hj-icon svg { width: 22px; height: 22px }

.hj-name { font-weight: 650; font-size: 1rem; line-height: 1.3; margin-top: .1rem; color: var(--ink) }

.hj-desc { font-size: .85rem; color: var(--ink-muted); margin-top: .2rem; line-height: 1.4; hyphens: auto }

/* Häkchen oben rechts: leerer Kreis, ausgewählt gefüllt */
.hj-check {
  position: absolute;
  top: .8rem;
  right: .8rem;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  color: transparent;
  transition: background-color .15s, border-color .15s, color .15s
}

.hj-check svg { width: 14px; height: 14px }

.hj-card.selected .hj-check { background: var(--accent); border-color: var(--accent); color: var(--on-accent) }

/* ---- Modus-Wahl als Segment-Schalter ---- */
.mode-toggle {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  gap: .25rem;
  padding: .25rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: .9rem
}

.mode-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 48px;
  padding: .7rem 1rem;
  border: 1px solid transparent;
  border-radius: .7rem;
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  font-size: .95rem;
  color: var(--ink-muted);
  transition: background-color .15s, color .15s, box-shadow .15s
}

.mode-btn svg { width: 20px; height: 20px; flex: none }

@media (hover: hover) {
  .mode-btn:not(.active):hover { color: var(--ink); background: transparent }
}

.mode-btn.active {
  background: var(--surface);
  border-color: var(--border);
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(15, 23, 42, .08)
}

.mode-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px }

/* ---- Buttons und Schrittleiste ---- */
.btn svg { width: 20px; height: 20px; flex: none }
.nav-icon { display: inline-grid; place-items: center; width: 22px; height: 22px }
.nav-icon svg { width: 18px; height: 18px }

/* ---- Unterthemen-Checkboxen ---- */
.subtopic-item input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 1.5px solid color-mix(in srgb, var(--ink) 30%, transparent);
  border-radius: 6px;
  background: var(--surface) center / 14px no-repeat;
  transition: background-color .12s, border-color .12s
}

.subtopic-item input[type="checkbox"]:checked {
  background-color: var(--accent);
  border-color: var(--accent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E")
}

[data-theme="dark"] .subtopic-item input[type="checkbox"]:checked {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2314141f' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E")
}

.subtopic-item input[type="checkbox"]:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px }

/* ---- Handy ---- */
@media (max-width: 560px) {
  .mode-toggle { grid-auto-flow: row }
  .mode-btn { padding: .6rem .75rem }
}

@media (prefers-reduced-motion: reduce) {
  .hj-card, .hj-check, .mode-btn { transition: none }
}