/* =====================================================
   LERNLEKTIONEN CSS – MatheAlex
   Extrahiert aus dem WordPress Customizer (Stand: April 2026)
   Dieses CSS wird vom Plugin alex-lernlektionen geladen.
   ===================================================== */


/* =====================================================
   CSS-VARIABLEN
   ===================================================== */

:root {
  --primary-blau: #00254F;
  --secondary-blau: #1e3a5f;
  --mathe-blau: #00254F;
  --mathe-gold-hell: #FFF3E6;
  --mathe-gold-sehr-hell: #fffaf3;
}


/* =====================================================
   GRUNDLAYOUT
   ===================================================== */

h2 {
  text-align: center;
  margin-top: 20px;
  margin-bottom: 25px;
}

section {
  margin-bottom: 50px;
}

h3 {
  text-align: center;
  margin-bottom: 20px;
}

.mathe-content {
  margin: 2rem;
}

@media (max-width: 600px) {
  .mathe-content {
    margin: 1rem 0;
  }
}


/* =====================================================
   MATH-BLOCK (Formelboxen)
   ===================================================== */

.math-block,
.solution-btn {
  background: var(--mathe-gold-hell);
  color: var(--mathe-blau);
}

.math-block {
  margin: 1rem 0 !important;
  padding: 0.8rem 1rem !important;
  border-left: 6px solid var(--mathe-blau);
  border-left-width: 6px !important;
  border-radius: 6px !important;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  position: relative;
  padding-bottom: 1.3rem;

  /* Typografie-Schutz */
  letter-spacing: normal !important;
  word-spacing: normal !important;
  line-height: normal !important;
  font-size: 1rem !important;
  transform: none !important;
  filter: none !important;
  text-rendering: auto !important;
  font-variant-ligatures: normal !important;
  font-feature-settings: normal !important;
  unicode-bidi: normal !important;
  direction: ltr !important;
}

.math-block svg {
  max-width: none;
}

/* Autorhinweis */
.math-block::after {
  content: attr(data-origin);
  position: absolute;
  bottom: 0.25rem;
  right: 0.6rem;
  font-size: 0.7rem;
  color: rgba(0, 0, 0, 0.1);
  letter-spacing: 0.08em;
  line-height: 1;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

/* Linksbündiger Formelblock */
.math-block.math-block-left {
  text-align: left !important;
}


/* =====================================================
   EXERCISE (Übungsrahmen)
   ===================================================== */

.exercise {
  margin-top: 3rem;
  padding: 1.5rem;
  background: var(--mathe-gold-sehr-hell);
  border: 2px solid var(--mathe-blau);
  border-radius: 12px;
}


/* =====================================================
   INFO-BOX (blaue Box – Beispiele, Merksätze)
   ===================================================== */

.info-box {
  background: #E8F4FD;
  border-left: 4px solid #2196F3;
  padding: 15px 20px;
  margin: 25px 0;
  border-radius: 4px;
}


/* =====================================================
   EXERCISE-TASK (goldene Aufgabenbox)
   ===================================================== */

.exercise-task {
  background: var(--mathe-gold-hell);
  border-left: 4px solid var(--mathe-blau);
  padding: 15px 20px;
  margin: 25px 0;
  border-radius: 4px;
}


/* =====================================================
   HINT-BOX (roter Hinweis)
   ===================================================== */

.hint-box {
  background: #FFF0F0;
  border-left: 4px solid #E57373;
  padding: 10px 15px;
  border-radius: 4px;
  margin: 15px 0;
  font-size: 0.9em;
}


/* =====================================================
   YEAR-SHARE-BOX (gelbe Hinweisbox)
   ===================================================== */

.year-share-box {
  background: #FFF7CC;
  border-left: 4px solid #E6A800;
  padding: 15px 20px;
  margin: 25px 0;
  border-radius: 4px;
}


/* =====================================================
   COMPARE-TABLE (Vergleichstabelle)
   ===================================================== */

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
}

.compare-table td,
.compare-table th {
  vertical-align: top;
  padding: 20px;
  border: 1px solid #ddd;
}

.compare-table th,
.compare-table td:first-child {
  text-align: center;
}

.compare-table tr:first-child td {
  font-weight: 600;
  text-align: center;
}


/* =====================================================
   DETAILS / SUMMARY (Aufklappbare Lösungen)
   ===================================================== */

.exercise details {
  margin-top: 1.5rem;
}

.exercise details > summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--mathe-blau);
  padding: 0.3rem 0;
  list-style: none;
  transition: opacity 0.15s ease, text-decoration 0.15s ease;
}

.exercise details > summary::-webkit-details-marker {
  display: none;
}

.exercise details > summary::before {
  content: "\25B8";
  margin-right: 0.5rem;
  display: inline-block;
  transition: transform 0.15s ease;
}

.exercise details > summary:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.exercise details[open] > summary::before {
  transform: rotate(90deg);
}


/* =====================================================
   SOLUTION-BTN (Lösungs-Button)
   ===================================================== */

.solution-btn {
  padding: 10px 16px;
  font-weight: bold;
  border: 2px solid var(--mathe-blau);
  border-radius: 8px;
  cursor: pointer;
}

.solution-btn:hover,
.solution-btn:active,
.solution-btn:focus,
.solution-btn:focus-visible {
  background: var(--mathe-gold-hell);
  color: var(--mathe-blau);
  border-color: var(--mathe-blau);
  outline: none;
  box-shadow: none;
}


/* =====================================================
   MODAL (Lösungs-Popup)
   ===================================================== */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 99999;
}

.modal-content {
  position: relative;
  max-width: 720px;
  max-height: 80vh;
  margin: 8vh auto;
  padding: 1.8rem 2rem;
  background: var(--mathe-gold-sehr-hell);
  border-radius: 14px;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 1.6rem;
  background: none;
  border: none;
  color: var(--mathe-blau);
  cursor: pointer;
}

/* Feedback: richtig / falsch */
.modal-content.is-correct {
  background: #d1fae5;
  border: 2px solid #047857;
  color: #065f46;
}

.modal-content.is-wrong {
  background: #fee2e2;
  border: 2px solid #991b1b;
  color: #7f1d1d;
}

.modal-content.is-correct h3,
.modal-content.is-correct h4 {
  color: #065f46;
}

.modal-content.is-wrong h3,
.modal-content.is-wrong h4 {
  color: #7f1d1d;
}

.modal-content.is-correct .solution-btn,
.modal-content.is-wrong .solution-btn {
  background: var(--mathe-gold-hell);
  color: var(--mathe-blau);
  border-color: var(--mathe-blau);
}


/* =====================================================
   TABS
   ===================================================== */

.tabs {
  margin-top: 2.5rem;
}

.tab-buttons {
  display: flex;
  gap: 6px;
}

.tab-buttons button {
  flex: 1;
  padding: 12px;
  font-weight: bold;
  cursor: pointer;
  border: 2px solid var(--mathe-blau);
  border-radius: 8px 8px 0 0;
  background: var(--mathe-gold-hell);
  color: var(--mathe-blau);
}

.tab-buttons button.active {
  background: var(--mathe-gold-sehr-hell);
  border-bottom: none;
}

.tab-content {
  display: none;
  padding: 1.5rem;
  background: var(--mathe-gold-sehr-hell);
  border: 2px solid var(--mathe-blau);
  border-top: none;
  border-radius: 0 0 12px 12px;
}

.tab-content.active {
  display: block;
}

@media (max-width: 600px) {
  .tab-buttons {
    flex-direction: column;
  }
  .tab-buttons button {
    border-radius: 8px;
  }
}


/* =====================================================
   MULTIPLE CHOICE
   ===================================================== */

.exercise > p:last-of-type {
  margin-bottom: 0.6rem;
}

.answers {
  margin-top: 0.6rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}

.answers .solution-btn {
  width: 100%;
  text-align: center;
}


/* =====================================================
   LESSON-END (Schlusssatz)
   ===================================================== */

.lesson-end {
  text-align: center;
  margin-top: 35px;
  font-weight: 600;
}


/* =====================================================
   TEXT-CENTER
   ===================================================== */

.text-center {
  text-align: center;
}