/* ═══════════════════════════════════════════════════════
   NeoCalculator.net — Percent Error Calculator CSS
   ═══════════════════════════════════════════════════════ */

.pe-container {
  padding-top: 30px;
  padding-bottom: 50px;
}

.hero-section {
  text-align: center;
  margin-bottom: 30px;
}

.hero-section h1 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 8px;
}

.hero-section p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Card Panel Container */
.pe-card-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 40px;
}

.pe-card-panel h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
  color: var(--text-light);
}

.panel-desc {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 0.92rem;
}

/* Form Layout */
.pe-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.pe-action-btns {
  display: flex;
  gap: 12px;
}

/* Result Box Styling */
.pe-result-box {
  background: var(--formula-bg);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 20px;
  margin-top: 25px;
  color: var(--text-light);
  animation: fadeIn 0.3s ease-in-out;
}

.pe-result-box h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--accent);
}

.pe-res-main {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-light);
  margin-bottom: 15px;
}

.pe-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 15px;
}

.pe-metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: 8px;
}

.pe-metric-card .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.pe-metric-card .val {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-light);
}

.steps-list {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
  margin-top: 12px;
}

.formula-card {
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 15px 20px;
  margin-top: 15px;
}

.formula-math {
  font-size: 1rem;
  color: var(--text-light);
  overflow-x: auto;
  padding: 8px 0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}