:root {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.5;
  font-weight: 400;

  /* Color System */
  --primary-green: #2d5a3d;
  --secondary-green: #3d6b4d;
  --accent-yellow: #f4d03f;
  --light-yellow: #fff9e6;
  --white: #ffffff;
  --light-gray: #f8f9fa;
  --medium-gray: #6c757d;
  --dark-gray: #495057;
  --border-gray: #dee2e6;
  --success: #28a745;
  --warning: #ffc107;
  --error: #dc3545;
  --text-dark: #212529;

  /* Spacing System */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: #efefef;
  color: var(--text-dark);
  min-height: 100vh;
  font-family: var(--font-family);
}

.header {
  background: #fff5ad;
  padding: var(--spacing-md) 0;
  box-shadow: var(--shadow-sm);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  padding: 0 var(--spacing-md);
}

.logo-section {
  display: flex;
  align-items: center;
  justify-content: space-around;
  width: 70%;
  gap: var(--spacing-md);
}

.logo {
  height: 60px;
}

.logo img {
  height: 60px;
}

.main-container {
  max-width: 1600px;
  margin: var(--spacing-xl) auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--spacing-xl);
  align-items: start;
}

.input-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.section-card {
  background: #1d443a;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.section-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
}

.section-title {
  color: #fff5ad;
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  letter-spacing: 1px;
}

.invoice-form {
  margin-bottom: var(--spacing-xl);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 2fr auto;
  gap: var(--spacing-md);
  align-items: end;
}

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

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff5ad;
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--border-gray);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all 0.2s ease;
  background: var(--white);
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent-yellow);
  box-shadow: 0 0 0 3px rgba(244, 208, 63, 0.1);
  transform: translateY(-1px);
}

.add-btn {
  background: #fff;
  border: none;
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-green);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.add-btn:hover {
  background: #fff5ad;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.invoice-list {
  background: var(--light-gray);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.list-header {
  background: #fff5ad;
  color: #1d443a;
  padding: var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 2fr auto;
  gap: var(--spacing-md);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.list-body {
  max-height: 300px;
  overflow-y: auto;
}

.invoice-row {
  background: var(--white);
  padding: var(--spacing-md);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 2fr auto;
  gap: var(--spacing-md);
  border-bottom: 1px solid var(--border-gray);
  transition: background-color 0.2s ease;
  align-items: center;
}

.invoice-row:hover {
  background: var(--light-yellow);
}

.delete-btn {
  background: #1d443a;
  border: none;
  border-radius: var(--radius-sm);
  width: 30px;
  height: 30px;
  color: var(--white);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.delete-btn:hover {
  background: #163a31;
  transform: scale(1.1);
}

.button-row {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.clear-btn, .generate-btn {
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  width: 100%;
}

.clear-btn {
  background: var(--error);
}

.clear-btn:hover {
  background: #c82333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.generate-btn {
  background: #fff5ad;
  color: #1d443a ;
}

.generate-btn:hover {
  background: #fbe27c;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.results-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.summary-card,
.calculation-card {
  background: #1d443a;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.summary-card:hover,
.calculation-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.summary-card h3,
.calculation-card h3,
.vehicle-info-card h3 {
  color: #fff5ad;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 2px solid var(--accent-yellow);
  padding-bottom: var(--spacing-sm);
}

.summary-item,
.calc-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-gray);
  transition: background-color 0.2s ease;
  color: #fff5ad;
}

.summary-item:hover,
.calc-item:hover {
  background: var(--light-yellow);
  margin: 0 -var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  color: #1d443a;
}

.summary-item:last-child,
.calc-item:last-child {
  border-bottom: none;
}

.calc-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  border-top: 2px solid var(--primary-green);
  margin-top: var(--spacing-md);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff5ad;
}

.calc-percentage {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  font-weight: 600;
  color: #fff5ad;
}

.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  color: var(--white);
  font-weight: 600;
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.notification.show {
  transform: translateX(0);
}

.notification.success {
  background: var(--success);
}

.notification.error {
  background: var(--error);
}

.notification.hidden {
  display: none;
}

.empty-state {
  text-align: center;
  color: var(--medium-gray);
  font-style: italic;
  padding: var(--spacing-xl);
}

/* Nova estrutura para o cartão de informações do veículo */
.vehicle-info-card {
  background: #1d443a;
  border-radius: var(--radius-lg);
  padding: 15px;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  color: #fff5ad;
}

.vehicle-info-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.vehicle-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.vehicle-detail-item {
  display: flex;
  flex-direction: column;
}

.vehicle-detail-item strong {
  font-size: 1rem;
  color: #fff5ad;
  margin-bottom: var(--spacing-xs);
}

.vehicle-detail-item span {
  font-size: 0.9rem;
  color: #fff5ad;
}

.vehicle-limits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: #fff;
  padding: 10px 8px;
  border-radius: var(--radius-md);
  margin-top: var(--spacing-md);
  color: #1d443a;
}

.vehicle-limits h4 {
  grid-column: 1 / -1;
  color: #1d443a;
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.vehicle-limits-item {
  display: flex;
  flex-direction: column;
}

.vehicle-limits-item span {
  font-size: 0.8rem;
  font-weight: 600;
  color: #6c757d;
}

.vehicle-limits-item strong {
  font-size: 1rem;
  color: #212529;
}


/* Responsividade aprimorada */
@media (max-width: 768px) {
  .main-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .list-header,
  .invoice-row {
    grid-template-columns: 1fr 1fr 1fr 1fr;
    font-size: 0.8rem;
  }
  
  .list-header span:last-child,
  .invoice-row span:last-child {
    display: none;
  }
  
  .invoice-row .delete-btn {
    grid-column: 4 / 5;
    justify-self: end;
  }

  .header-content {
    padding: 0 var(--spacing-sm);
  }
  
  .logo {
    font-size: 1.4rem;
  }
  
  .vehicle-details,
  .vehicle-limits {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .list-header,
  .invoice-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
    text-align: left;
  }

  .list-header span,
  .invoice-row span {
    padding: var(--spacing-xs) 0;
  }

  .invoice-row .delete-btn {
    justify-self: start;
    margin-top: var(--spacing-xs);
  }
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-gray);
  border-radius: 50%;
  border-top-color: var(--primary-green);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Smooth transitions for all interactive elements */
button,
input,
.section-card,
.summary-card,
.calculation-card,
.vehicle-info-card {
  transition: all 0.2s ease;
}

/* Focus styles for accessibility */
button:focus,
input:focus {
  outline: 2px solid var(--accent-yellow);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .header,
  .input-section {
    display: none;
  }

  .results-section {
    width: 100%;
  }
}

.dashboard-btn-link {
    text-decoration: none;
    display: block;
    margin-top: var(--spacing-lg);
}

.dashboard-btn {
    background-color:#163a31;
    color: #fff5ad;
    font-weight: 600;
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.dashboard-btn:hover {
    background-color: #fff5ad;
    color: #163a31;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}