/* ==========================================================================
   MATEMATIK 2A - SPECIFIK STYLING & INTERAKTIVA VERKTYG
   ========================================================================== */

/* Matematik Hero / Banner */
.math-banner {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.1) 0%, rgba(99, 102, 241, 0.05) 100%);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 3rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.math-banner-content h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.math-banner-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 650px;
}

/* Modul-grid / Momentöversikt */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.module-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.module-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-math);
}

.module-card-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.module-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.module-card ul {
  list-style: none;
  padding: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.module-card li::before {
  content: "• ";
  color: var(--color-math);
  font-weight: bold;
}

/* PQ-Lösare Verktyg */
.solver-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (max-width: 860px) {
  .solver-layout {
    grid-template-columns: 1fr;
  }
}

.solver-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.input-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.input-field {
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  transition: border-color var(--transition-fast);
}

.input-field:focus {
  border-color: var(--color-math);
  outline: none;
}

.solver-btn {
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--accent-gradient);
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--accent-glow);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.solver-btn:hover {
  transform: translateY(-2px);
  opacity: 0.95;
}

.solver-presets {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.preset-btn {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.preset-btn:hover {
  border-color: var(--color-math);
  color: var(--color-math);
}

/* Steg-för-steg och resultatruta */
.solver-results {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  font-family: var(--font-body);
}

.result-box-highlight {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.result-box-highlight h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--color-math);
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.roots-display {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.step-item {
  padding: 0.5rem 0.75rem;
  background: var(--bg-surface);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-math);
}

/* Graf-canvas */
.canvas-wrapper {
  margin-top: 1.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  text-align: center;
}

#graphCanvas, #linearCanvas, #quadCanvas {
  width: 100%;
  height: 300px;
  background: var(--bg-body);
  border-radius: var(--radius-sm);
  display: block;
}

/* Formellåda */
.formula-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.formula-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.formula-card h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.formula-math {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  background: var(--bg-body);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  color: var(--color-math);
  margin-bottom: 0.5rem;
}

.formula-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}