/* Reset e configurações base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  font-size: 62.5%;

  /* Cores principais - Gradiente Verde */
  --gradient-start: #a8e6cf;
  --gradient-end: #56ab91;
  --primary-green: #3d9970;
  --primary-green-hover: #2d7a5a;
  --background-white: #ffffff;
  --text-dark: #2c3e50;
  --text-light: #34495e;
  --input-bg: #e8f5e9;
  --shadow: rgba(0, 0, 0, 0.1);
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
}

body {
  background: linear-gradient(287.56deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  font-size: 1.6rem;
  font-family: "DM Sans", sans-serif;
  min-height: 100vh;
  color: var(--text-dark);
}

/* Header */
header {
  text-align: center;
  padding: 4rem 2rem 2rem;
  color: var(--text-dark);
}

header h1 {
  font-family: "Montserrat", sans-serif;
  font-size: 3.2rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header p {
  font-size: 1.6rem;
  opacity: 0.9;
}

/* Main Container */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Navigation Menu */
.calculator-menu {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
}

.menu-btn {
  background: var(--background-white);
  border: none;
  border-radius: 1rem;
  padding: 1.2rem 2rem;
  cursor: pointer;
  font-family: "DM Sans", sans-serif;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-light);
  box-shadow: 0 2px 8px var(--shadow);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.menu-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
  color: var(--primary-green);
}

.menu-btn.active {
  background: var(--primary-green);
  color: white;
  box-shadow: 0 4px 12px rgba(61, 153, 112, 0.3);
}

.menu-btn .icon {
  font-size: 2rem;
}

/* Calculator Sections */
.calculator {
  display: none;
  animation: fadeIn 0.4s ease;
}

.calculator.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.calculator-card {
  background: var(--background-white);
  border-radius: 1.2rem;
  padding: 3rem;
  box-shadow: 0 4px 16px var(--shadow);
  max-width: 700px;
  margin: 0 auto;
}

.calculator-card h2 {
  font-family: "Montserrat", sans-serif;
  font-size: 2.4rem;
  color: var(--text-dark);
  margin-bottom: 0.8rem;
}

.description {
  color: var(--text-light);
  opacity: 0.9;
  margin-bottom: 3rem;
  font-size: 1.5rem;
}

/* Forms */
.calc-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.input-group label {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 1.5rem;
}

.input-group input,
.input-group select {
  border: none;
  background: var(--input-bg);
  padding: 1.4rem 1.6rem;
  border-radius: 0.8rem;
  font-family: "DM Sans", sans-serif;
  font-size: 1.6rem;
  color: var(--text-dark);
  transition: all 0.3s ease;
  outline: none;
}

.input-group input:focus,
.input-group select:focus {
  background: #d4edda;
  box-shadow: 0 0 0 3px rgba(61, 153, 112, 0.2);
}

.input-group small {
  font-size: 1.3rem;
  color: var(--text-light);
  opacity: 0.8;
}

/* Remove setas do input number */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type=number] {
  -moz-appearance: textfield;
}

/* Buttons */
.calc-btn {
  background: var(--primary-green);
  color: white;
  border: none;
  border-radius: 0.8rem;
  padding: 1.6rem 3.2rem;
  font-family: "DM Sans", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 1rem;
  box-shadow: 0 4px 12px rgba(61, 153, 112, 0.3);
}

.calc-btn:hover {
  background: var(--primary-green-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(61, 153, 112, 0.4);
}

.calc-btn:active {
  transform: translateY(0);
}

/* Results */
.results {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 2px solid #e8f5e9;
  animation: slideDown 0.4s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Utility: Hide elements */
.hide {
  display: none !important;
}

.results.hide {
  display: none;
}

.results h3 {
  font-family: "Montserrat", sans-serif;
  font-size: 2rem;
  color: var(--text-dark);
  margin-bottom: 2rem;
}

.result-grid {
  display: grid;
  gap: 1.5rem;
}

.result-item {
  background: linear-gradient(135deg, #f8fffe 0%, #e8f5e9 100%);
  padding: 2rem;
  border-radius: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-left: 4px solid var(--primary-green);
  transition: all 0.3s ease;
}

.result-item:hover {
  transform: translateX(5px);
  box-shadow: 0 4px 12px var(--shadow);
}

.result-label {
  font-weight: 600;
  color: var(--text-light);
  font-size: 1.5rem;
}

.result-value {
  font-weight: 700;
  font-size: 2rem;
  color: var(--primary-green);
  font-family: "Montserrat", sans-serif;
}

/* Status específicos */
.result-item.status.success {
  border-left-color: var(--success);
  background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
}

.result-item.status.success .result-value {
  color: var(--success);
}

.result-item.status.warning {
  border-left-color: var(--warning);
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
}

.result-item.status.warning .result-value {
  color: var(--warning);
}

.result-item.status.danger {
  border-left-color: var(--danger);
  background: linear-gradient(135deg, #fef2f2 0%, #fecaca 100%);
}

.result-item.status.danger .result-value {
  color: var(--danger);
}

/* Tooltips */
.tooltip-icon {
  display: inline-block;
  margin-left: 0.5rem;
  cursor: help;
  font-size: 1.4rem;
  position: relative;
}

.tooltip-icon::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-0.5rem);
  background: var(--text-dark);
  color: white;
  padding: 0.8rem 1.2rem;
  border-radius: 0.6rem;
  font-size: 1.3rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 1000;
  font-weight: normal;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.tooltip-icon:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-1rem);
}

/* Configurações Avançadas (Accordion) */
.advanced-settings {
  margin-top: 2.5rem;
  border-top: 2px dashed #d4edda;
  padding-top: 2rem;
}

.toggle-advanced {
  width: 100%;
  background: linear-gradient(135deg, #f8fffe 0%, #e8f5e9 100%);
  border: 2px solid var(--primary-green);
  border-radius: 0.8rem;
  padding: 1.2rem 1.6rem;
  font-family: "DM Sans", sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-green);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.toggle-advanced:hover {
  background: linear-gradient(135deg, #e8f5e9 0%, #d4edda 100%);
  box-shadow: 0 2px 8px var(--shadow);
}

.toggle-advanced .icon {
  font-size: 1.8rem;
}

.toggle-advanced .arrow {
  transition: transform 0.3s ease;
  font-size: 1.2rem;
}

.toggle-advanced.active .arrow {
  transform: rotate(180deg);
}

.advanced-content {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, #fafffe 0%, #f0f9f4 100%);
  border-radius: 0.8rem;
  border-left: 4px solid var(--primary-green);
  animation: slideDown 0.4s ease;
}

.advanced-content.hide {
  display: none;
}

.advanced-content .input-group {
  margin-bottom: 1.5rem;
}

.advanced-content .input-group:last-child {
  margin-bottom: 0;
}

/* Resultado Destacado */
.result-item.highlight {
  background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
  border-left-width: 6px;
  box-shadow: 0 2px 12px rgba(39, 174, 96, 0.15);
}

.result-item.highlight .result-value {
  font-size: 2.4rem;
  color: var(--success);
}

.result-item.highlight:hover {
  box-shadow: 0 4px 16px rgba(39, 174, 96, 0.25);
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-dark);
  margin-top: 4rem;
}

footer .disclaimer {
  background: linear-gradient(135deg, #fff9e6 0%, #ffeaa7 100%);
  border-left: 4px solid var(--warning);
  padding: 1.5rem 2rem;
  border-radius: 0.8rem;
  font-size: 1.4rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  color: #856404;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 2px 8px rgba(243, 156, 18, 0.1);
}

footer .disclaimer strong {
  color: var(--warning);
}

footer p {
  font-size: 1.4rem;
  opacity: 0.8;
}

/* Responsividade */
@media (max-width: 768px) {
  header h1 {
    font-size: 2.4rem;
  }

  .calculator-menu {
    gap: 0.8rem;
  }

  .menu-btn {
    padding: 1rem 1.5rem;
    font-size: 1.3rem;
  }

  .menu-btn .icon {
    font-size: 1.6rem;
  }

  .menu-btn .text {
    display: none;
  }

  .calculator-card {
    padding: 2rem;
  }

  .calculator-card h2 {
    font-size: 2rem;
  }

  .result-item {
    flex-direction: column;
    gap: 0.8rem;
    text-align: center;
  }

  .result-value {
    font-size: 2.4rem;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 56.25%;
  }

  main {
    padding: 1rem;
  }

  .calculator-card {
    padding: 1.5rem;
  }
}