/* ============================================================
   TECNOTAMBOR - Estilos especificos da calculadora de tambores
   Design system: Martin Tools (azuis + cinzas + branco - SEM LARANJA)
   ============================================================ */

/* --- KPI Bar --- */
.kpi-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.kpi-card {
  background: linear-gradient(135deg, #062F87, #1a4a9f);
  color: #fff;
  border-radius: 8px;
  padding: 12px 15px;
  text-align: center;
}

.kpi-card .kpi-label {
  font-family: 'Fira Sans', sans-serif;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #fff;
  opacity: 0.85;
}

.kpi-card .kpi-value {
  font-family: 'Oswald', sans-serif;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.2;
  color: #fff;
}

/* --- Form Layout --- */
.tambor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.tambor-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-family: 'Fira Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--text, #1e293b);
  margin-bottom: 4px;
}

.form-group input,
.form-group select {
  padding: 8px 10px;
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 6px;
  font-family: 'Roboto', sans-serif;
  font-size: 13px;
  background: #fff;
  color: var(--text, #1e293b);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary, #062F87);
  box-shadow: 0 0 0 3px rgba(6, 47, 135, 0.1);
}

.section-title {
  font-family: 'Fira Sans', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary, #062F87);
  border-bottom: 2px solid var(--accent, #3B82F6);
  padding-bottom: 4px;
  margin: 16px 0 10px 0;
}

/* --- Action Buttons --- */
.btn-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 15px 0;
}

.calc-btn,
.example-btn,
.report-btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-family: 'Fira Sans', sans-serif;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.calc-btn {
  background: var(--primary, #062F87);
  color: #fff;
}

.calc-btn:hover { background: #001a4d; }

.example-btn {
  background: var(--accent, #3B82F6);
  color: #fff;
}

.example-btn:hover { background: #2563eb; }

.report-btn {
  background: #10b981;
  color: #fff;
}

.report-btn:hover { background: #059669; }

/* --- Results --- */
.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.result-card {
  background: var(--bg-grey, #f1f5f9);
  border-radius: 8px;
  padding: 14px;
  border-left: 4px solid var(--primary, #062F87);
}

.result-card h3 {
  font-family: 'Fira Sans', sans-serif;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary, #062F87);
  margin: 0 0 8px 0;
}

.result-card .result-body {
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text, #1e293b);
}

/* --- Alerts --- */
.alert {
  padding: 10px 14px;
  border-radius: 6px;
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.alert-danger {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fde68a;
}

.alert-ok {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

/* --- Status badges --- */
.status-ok { color: #16a34a; font-weight: 700; }
.status-alerta { color: #d97706; font-weight: 700; }
.status-reprovado { color: #dc2626; font-weight: 700; }

/* --- Derivation --- */
.derivation {
  background: #0f172a;
  color: #e2e8f0;
  padding: 12px 16px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 11px;
  line-height: 1.7;
  overflow-x: auto;
  margin-top: 6px;
}

.derivation code {
  display: block;
}

details {
  margin-bottom: 10px;
}

details summary {
  font-family: 'Fira Sans', sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary, #062F87);
  cursor: pointer;
  padding: 6px 0;
}

details summary:hover {
  color: var(--accent, #3B82F6);
}

/* --- History Panel --- */
.history-panel {
  max-height: 300px;
  overflow-y: auto;
  font-size: 12px;
}

.history-panel table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Roboto', sans-serif;
}

.history-panel th {
  background: var(--primary, #062F87);
  color: #fff;
  padding: 6px 8px;
  text-align: left;
  font-size: 11px;
  position: sticky;
  top: 0;
}

.history-panel td {
  padding: 5px 8px;
  border-bottom: 1px solid var(--border, #cbd5e1);
}

.history-panel tr:hover td {
  background: var(--bg-grey, #f1f5f9);
}

/* --- SVG Container --- */
.svg-container {
  background: #fff;
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 8px;
  padding: 10px;
  margin: 10px 0;
  text-align: center;
}

/* --- Section spacing --- */
.card-section {
  background: #fff;
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

/* --- Report section --- */
.report-section {
  background: var(--bg-grey, #f1f5f9);
  border: 1px solid var(--border, #cbd5e1);
  border-radius: 8px;
  padding: 16px;
  margin-top: 16px;
}

.report-section .form-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.report-section .form-row input {
  flex: 1;
  min-width: 150px;
}

/* --- Info box --- */
.info-box {
  background: var(--bg-grey, #f1f5f9);
  border-left: 4px solid var(--accent, #3B82F6);
  padding: 10px 14px;
  border-radius: 0 6px 6px 0;
  font-family: 'Roboto', sans-serif;
  font-size: 12px;
  color: var(--text-muted, #64748b);
  margin-bottom: 12px;
  line-height: 1.5;
}

.info-box strong {
  color: var(--text, #1e293b);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .tambor-grid {
    grid-template-columns: 1fr;
  }
  .result-grid {
    grid-template-columns: 1fr;
  }
  .kpi-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Bushing Multi-select --- */
.bushing-families {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}
.bushing-cb {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 16px;
  background: #f8fafc;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
.bushing-cb:hover {
  border-color: #3B82F6;
  background: #eff6ff;
}
.bushing-cb input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: #1d4ed8;
  cursor: pointer;
  margin: 0;
}
.bushing-cb:has(input:checked) {
  border-color: #3B82F6;
  background: #dbeafe;
  color: #1e40af;
  font-weight: 600;
}
.bushing-auto-btn:hover {
  background: #dbeafe !important;
}

/* --- Bushing Results Card --- */
.bushing-result-card {
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 12px;
  margin: 8px 0;
}
.bushing-result-card h4 {
  font-size: 13px;
  margin: 0 0 8px 0;
  color: #062F87;
}
.bushing-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
  font-size: 11px;
}
.bushing-result-item {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
  border-bottom: 1px solid #f1f5f9;
}
.bushing-result-item .label {
  color: #64748b;
}
.bushing-result-item .value {
  font-weight: 600;
  color: #1e293b;
}
.bushing-verdict {
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}
.bushing-verdict.ok {
  background: #dcfce7;
  color: #15803d;
}
.bushing-verdict.warn {
  background: #fef3c7;
  color: #b45309;
}
.bushing-verdict.fail {
  background: #fee2e2;
  color: #dc2626;
}
.bushing-alternatives {
  margin-top: 10px;
  font-size: 11px;
}
.bushing-alternatives table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}
.bushing-alternatives th {
  background: #f1f5f9;
  padding: 4px 6px;
  text-align: left;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #475569;
}
.bushing-alternatives td {
  padding: 3px 6px;
  border-bottom: 1px solid #f1f5f9;
}
.bushing-alternatives .ok-td { color: #15803d; font-weight: 600; }
.bushing-alternatives .fail-td { color: #dc2626; }
.bushing-alternatives .best-row {
  background: #f0fdf4;
  font-weight: 700;
}

@media print {
  .card-section {
    break-inside: avoid;
  }
  .result-grid {
    break-inside: avoid;
  }
}