:root {
  /* Cores refinadas baseadas na logo */
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-primary: #15212d;
  --color-primary-light: #3b7bea;
  --color-primary-dark: #0e1921;
  --color-secondary: #ffb400;
  --color-secondary-dark: #e09600;
  --color-accent: #39b3c3;
  --color-text: #15212d;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-toggle-bg: #f1f5f9;
  --color-toggle-active: var(--color-primary);
  --border-radius: 16px;
  --border-radius-sm: 8px;
  --box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
  --box-shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
  --box-shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --field-height: 3.25rem;
  --logo-size: 80px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

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

html {
  scroll-behavior: smooth;
}

body { 
  background: var(--color-bg); 
  color: var(--color-text); 
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin-top: 110px; /* Espaço para o header fixo - desktop */
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 0.75rem 0;
  box-shadow: var(--box-shadow-lg);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
  color: white;
}

.logo {
  width: 90px;
  height: 90px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.logo-text {
  font-family: 'Poppins', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  font-size: 0.875rem;
  opacity: 0.9;
  font-weight: 400;
}

/* Ajuste para header fixo */
body {
  margin-top: 110px; /* Espaço para o header fixo */
}

/* Mode Selector - Design Premium */
.mode-selector {
  background: var(--color-card);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 1.5rem;
  margin: 1.5rem auto;
  max-width: 1200px;
  position: relative;
  z-index: 10;
  border: 1px solid var(--color-border);
}

.mode-selector-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mode-selector-title i {
  color: var(--color-primary-light);
  font-size: 1.125rem;
}

.mode-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  background: var(--color-toggle-bg);
  padding: 0.25rem;
  border-radius: 20px;
  position: relative;
  gap: 0.25rem;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.06);
}

.mode-toggle-slider {
  position: absolute;
  top: 0.25rem;
  left: 0.25rem;
  width: calc(33.333% - 0.167rem);
  height: calc(100% - 0.5rem);
  background: linear-gradient(145deg, #ffffff, #f1f5f9);
  border-radius: 16px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  border: 1px solid rgba(255,255,255,0.8);
}

.mode-toggle-slider.middle {
  transform: translateX(calc(100% + 0.25rem));
}

.mode-toggle-slider.right {
  transform: translateX(calc(200% + 0.5rem));
}

.mode-option {
  background: transparent;
  border: none;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  position: relative;
  z-index: 2;
  white-space: nowrap;
}

.mode-option.active {
  color: var(--color-primary);
  font-weight: 600;
}

.mode-option i {
  font-size: 1rem;
  transition: var(--transition-fast);
}

.mode-option:hover:not(.active) {
  color: var(--color-text);
}

/* Cards e Layout */
.card {
  background: var(--color-card);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  border: 1px solid var(--color-border);
  padding: 2rem;
  margin-bottom: 2rem;
  transition: var(--transition);
}

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

.card-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.card-title i {
  color: var(--color-primary-light);
  font-size: 1.5rem;
}

.card-title h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

/* Progress Indicator */
.progress-indicator {
  background: rgba(59,123,234,0.05);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(59,123,234,0.1);
  transition: all 0.3s ease;
}

.progress-indicator:hover {
  background: rgba(59,123,234,0.08);
  transform: translateY(-1px);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.progress-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.progress-title i {
  color: var(--color-primary-light);
  font-size: 1.125rem;
}

.progress-percentage {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary-light);
  padding: 0.25rem 0.5rem;
  background: rgba(59,123,234,0.1);
  border-radius: 12px;
}

.progress-bar-container {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-secondary));
  border-radius: 4px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  min-width: 2px;
  width: 0%;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: progressShimmer 2s infinite;
}

@keyframes progressShimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Formulário */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.form-row {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.input-group {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.input-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  letter-spacing: 0.025em;
}

.input-group input,
.input-group select {
  width: 100%;
  height: var(--field-height);
  padding: 0 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-card);
  transition: var(--transition);
  color: var(--color-text);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(59,123,234,0.1);
  background: #ffffff;
}

.input-group.valid input,
.input-group.valid select {
  border-color: var(--color-success);
  background: rgba(16,185,129,0.02);
}

.input-group.invalid input,
.input-group.invalid select {
  border-color: var(--color-error);
  background: rgba(239,68,68,0.02);
}

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border: none;
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  font-weight: 600;
  font-family: 'Poppins', sans-serif;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  min-height: 3rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(59,123,234,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59,123,234,0.4);
}

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

.btn-secondary {
  background: var(--color-card);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* Ad Container */
.ad-container {
  margin: 2rem auto;
  padding: 1.5rem;
  background: linear-gradient(135deg, #fafbfc, #f3f4f6);
  border-radius: var(--border-radius);
  text-align: center;
  border: 2px dashed var(--color-border);
  max-width: 1200px;
}

.ad-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-text-light);
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.ad-slot {
  min-height: 100px;
  background: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.ad-slot-text {
  color: #94a3b8;
}

.chart-height {
  height: 300px;
}

.btn-full-width {
  width: 100%;
}

.form-row-spaced {
  margin-top: 2rem;
}

.scenario-title {
  margin: 1.5rem 0 1rem;
  color: var(--color-primary);
  font-weight: 600;
}

/* Resultados */
.results-section {
  display: none;
  margin-top: 2rem;
}

.results-section.show {
  display: block;
  animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.result-card {
  background: var(--color-card);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  transition: var(--transition);
  text-align: center;
}

.result-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--box-shadow-lg);
}

.result-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: white;
  font-size: 1.5rem;
}

.result-value {
  font-family: 'Poppins', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.result-label {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-weight: 500;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.result-row:last-child {
  border-bottom: none;
}

.result-row .result-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
}

.result-row .result-label i {
  color: var(--color-primary-light);
  font-size: 1.25rem;
}

.result-row .result-value {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 1.125rem;
}

.recommendation {
  background: linear-gradient(135deg, var(--color-success), #059669);
  color: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  margin: 1.5rem 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--box-shadow-lg);
}

.recommendation i {
  font-size: 2rem;
  opacity: 0.9;
}

.recommendation-text h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.recommendation-text p {
  margin-bottom: 0.75rem;
  opacity: 0.9;
}

.recommendation-value {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1.125rem;
}

.result-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.action-btn {
  flex: 1;
  min-width: 160px;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-decoration: none;
}

.action-btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
  box-shadow: 0 4px 12px rgba(59,123,234,0.3);
}

.action-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59,123,234,0.4);
}

.action-btn-secondary {
  background: var(--color-card);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.action-btn-secondary:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}

.error {
  background: rgba(239,68,68,0.1);
  color: var(--color-error);
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(239,68,68,0.2);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.error i {
  font-size: 1.25rem;
}

.loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
  margin-right: 0.5rem;
}

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

/* Charts */
.charts-section {
  display: none;
  margin-top: 2rem;
}

.charts-section.show {
  display: block;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.chart-container {
  background: var(--color-card);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow);
}

.chart-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1rem;
  text-align: center;
}

/* Footer */
footer {
  margin-top: 3rem;
  padding: 3rem 0 2rem;
  background: linear-gradient(135deg, #0f172a 0%, #020617 100%);
  color: #e2e8f0;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 0;
  right: 0;
  height: 100px;
  background: var(--color-bg);
  border-radius: 0 0 50% 50% / 0 0 100% 100%;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
  text-align: center;
}

.footer-logo {
  width: 60px;
  height: 60px;
  margin: 0 auto 2rem;
  display: block;
  opacity: 0.9;
  transition: var(--transition);
}

.footer-logo:hover {
  opacity: 1;
  transform: scale(1.1);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  transition: var(--transition-fast);
  position: relative;
}

.footer-links a::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: var(--transition-fast);
  transform: translateX(-50%);
}

.footer-links a:hover {
  color: white;
}

.footer-links a:hover::before {
  width: 80%;
}

.footer-links a.active {
  color: white;
  background: rgba(255,255,255,0.1);
}

.footer-sections {
  margin-top: 2.5rem;
}

.footer-section {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 1.75rem;
  display: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border: 1px solid rgba(255,255,255,0.1);
  text-align: left;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.footer-section.active {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

.footer-section h3 {
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: white;
  font-weight: 600;
  letter-spacing: -0.02em;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary-light), var(--color-secondary));
  border-radius: 2px;
}

.footer-section p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.25rem;
  font-size: 1rem;
  line-height: 1.8;
}

.content-list {
  margin-bottom: 1.25rem;
  list-style: none;
  padding-left: 0;
}

.content-list li {
  position: relative;
  margin-bottom: 0.875rem;
  padding-left: 2rem;
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
}

ol.content-list {
  counter-reset: item;
}

ol.content-list li {
  counter-increment: item;
}

ol.content-list li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(59,123,234,0.2);
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.875rem;
}

ul.content-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 600;
  color: var(--color-secondary);
  font-size: 1.25rem;
}

ul.content-list.highlight li::before {
  color: var(--color-primary-light);
}

.footer-section a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: var(--transition-fast);
  font-weight: 500;
}

.footer-section a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.footer-section strong {
  color: white;
  font-weight: 600;
}

.copyright {
  font-size: 0.875rem;
  opacity: 0.7;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

/* Hidden utility */
.hidden {
  display: none !important;
}

/* ===== ADSENSE CONTAINERS ===== */
.ad-container {
  margin: 2rem auto;
  text-align: center;
  max-width: 100%;
  position: relative;
}

.ad-container.top-banner {
  margin: 1rem auto;
  padding: 0.5rem 0;
  background: rgba(255,255,255,0.02);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.ad-container.mid-content {
  margin: 3rem auto;
  padding: 1.5rem;
  background: rgba(255,255,255,0.03);
  border-radius: var(--border-radius);
  border: 1px solid rgba(255,255,255,0.08);
}

.ad-container.bottom-banner {
  margin: 2rem auto 1rem;
  padding: 1rem 0;
  background: rgba(255,255,255,0.02);
  border-top: 1px solid rgba(255,255,255,0.05);
}

.ad-label {
  display: block;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* AdSense responsive optimization */
.adsbygoogle {
  min-height: 50px;
  max-width: 100%;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsividade */
@media (max-width: 768px) {
  .ad-container {
    margin: 1.5rem auto;
    padding: 0.75rem;
  }
  
  .ad-container.top-banner,
  .ad-container.bottom-banner {
    padding: 0.5rem;
  }
  
  :root {
    --logo-size: 60px;
  }
  
  /* Header mobile optimization */
  header {
    padding: 0.5rem 0;
  }
  
  .header-content {
    flex-direction: row;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
  }
  
  .logo {
    width: 60px;
    height: 60px;
  }
  
  .logo-text {
    font-size: 1.5rem;
  }
  
  .tagline {
    font-size: 0.75rem;
  }
  
  body {
    margin-top: 76px; /* Ajuste para header móvel: 60px logo + 16px padding */
  }
  
  .brand {
    justify-content: flex-start;
  }
  
  .mode-toggle {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  
  .mode-toggle-slider {
    display: none;
  }
  
  .mode-option {
    background: var(--color-toggle-bg);
    justify-content: flex-start;
    border-radius: var(--border-radius-sm);
    border: 2px solid transparent;
  }
  
  .mode-option.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
  }
  
  .form-row {
    flex-direction: column;
    gap: 1rem;
  }
  
  .input-group {
    min-width: auto;
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
  }
  
  .back-button span {
    display: none;
  }
  
  .back-button {
    padding: 0.6rem;
    min-width: 40px;
    gap: 0;
    border-radius: 6px;
  }
  
  .back-button i {
    font-size: 1.1rem;
  }

  .result-actions {
    flex-direction: column;
  }

  .action-btn {
    min-width: auto;
  }
}

@media (max-width: 640px) {
  .card {
    padding: 1.5rem;
  }
  
  .result-cards {
    grid-template-columns: 1fr;
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .chart-container {
    padding: 1rem;
  }

  .recommendation {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  :root {
    --logo-size: 50px;
  }
  
  /* Header mobile optimization for small screens */
  header {
    padding: 0.4rem 0;
  }
  
  .logo {
    width: 50px;
    height: 50px;
  }
  
  .logo-text {
    font-size: 1.3rem;
  }
  
  .tagline {
    font-size: 0.7rem;
  }
  
  body {
    margin-top: 62px; /* Ajuste para header móvel pequeno: 50px logo + 12px padding */
  }
  
  .footer-section {
    padding: 1.5rem;
  }
}