/* ---- Fuel Calculator Panel ---- */
.fuel-calc-panel {
  max-width: 520px;
  margin: 0 auto;
  padding: 1rem 0 3rem;
}
.fuel-calc-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}
.fuel-calc-icon { font-size: 2rem; line-height: 1; }
.fuel-calc-title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--text);
}
.fuel-calc-subtitle {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  margin-top: 0.2rem;
}
.fuel-calc-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}
@media (max-width: 480px) { .fuel-calc-form { grid-template-columns: 1fr; } }
.fuel-field { display: flex; flex-direction: column; gap: 0.3rem; }
.fuel-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.fuel-input-hint {
  font-size: 0.62rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  opacity: 0.5;
  margin-top: -0.1rem;
}
.fuel-input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 0.55rem 0.8rem;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 0.2s;
}
.fuel-input:focus { outline: none; border-color: var(--cyan); }
.fuel-field--span {
  grid-column: 1 / -1;
}
.fuel-field-check {
  display: flex;
  align-items: flex-end;
  padding-bottom: 0.15rem;
}
.fuel-check-row {
  display: flex;
  align-items: center;
  padding: 0.35rem 0.1rem;
  margin-bottom: 0.75rem;
}
.fuel-check-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}
.fuel-check-label input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--cyan);
  cursor: pointer;
}
.fuel-check-text {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: var(--font-main);
}
.fuel-calc-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  border: none;
  border-radius: 10px;
  color: var(--bg);
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.9rem;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  letter-spacing: 0.05em;
}
.fuel-calc-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* ---- Abas e toggle de modo ---- */
.fuel-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.fuel-tab {
  flex: 1;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-dim);
  font-family: var(--font-head);
  font-size: 0.8rem;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}
.fuel-tab.active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(255, 107, 0, 0.08);
}
.fuel-mode-toggle {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.fuel-mode-btn {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}
.fuel-mode-btn.active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(255, 107, 0, 0.08);
}

/* ---- Valor grande sem gradiente (modo corrida) ---- */
.fuel-result-value--big {
  font-family: var(--font-head);
  font-size: 2.2rem;
  line-height: 1;
}

/* ---- Sub-grid L&C (consumo alvo, economia, redução) ---- */
.fuel-result-grid--lnc {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

/* ---- Label opcional ---- */
.fuel-optional {
  font-size: 0.62rem;
  opacity: 0.55;
  font-family: var(--font-mono);
  font-weight: 400;
}

/* ---- Responsive: 3 abas em telas pequenas ---- */
@media (max-width: 400px) {
  .fuel-tab { font-size: 0.65rem; padding: 0.5rem 0.3rem; }
}

/* ---- Veredito (pode terminar / box) ---- */
.fuel-verdict {
  margin-top: 1rem;
  text-align: center;
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 700;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  letter-spacing: 0.05em;
}
.fuel-verdict-ok {
  color: var(--cyan);
  background: rgba(255, 107, 0, 0.08);
  border: 1px solid rgba(255, 107, 0, 0.3);
}
.fuel-verdict-nok {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.3);
}
.fuel-verdict-tight {
  color: #ffc03d;
  background: rgba(255, 192, 61, 0.08);
  border: 1px solid rgba(255, 192, 61, 0.35);
}
.fuel-verdict-warning {
  color: #ff8c42;
  background: rgba(255, 140, 66, 0.08);
  border: 1px solid rgba(255, 140, 66, 0.35);
}

.fuel-result {
  margin-top: 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.fuel-result-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: 0.75rem;
  text-align: center;
  align-items: end;
}
@media (max-width: 400px) { .fuel-result-grid { grid-template-columns: 1fr 1fr; } }
.fuel-result-item { display: flex; flex-direction: column; align-items: center; gap: 0.3rem; }
.fuel-result-value {
  font-family: var(--font-head);
  font-size: 1.5rem;
  color: var(--text);
  line-height: 1;
}
.fuel-result-main .fuel-result-value {
  font-size: 2.2rem;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.fuel-result-label {
  font-size: 0.63rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.fuel-result-note {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  opacity: 0.65;
}
.fuel-error {
  color: #ff6b6b;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-align: center;
  padding: 0.5rem 0;
}