/* CSS Variables for Color Palette */
:root {
  --color-primary: #00ADB5;
  --color-secondary: #393E46;
  --color-dark: #222831;
  --color-light: #EEEEEE;
  --color-accent: #FFD369;
  --color-white: #FFFFFF;
  --color-success: #28a745;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 3rem;
  
  /* Typography */
  --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-sm: 0.875rem;
  --line-height-base: 1.5;
  
  /* Shadows */
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  
  /* Border Radius */
  --border-radius: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-xl: 1rem;
  
  /* Transitions */
  --transition-base: all 0.3s ease;
  --transition-fast: all 0.15s ease;
}

/* Dark Mode Variables */
[data-bs-theme="dark"] {
  --color-light: #2c3e50;
  --color-white: #1a1a1a;
  --bs-body-bg: var(--color-dark);
  --bs-body-color: var(--color-light);
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-base);
  line-height: var(--line-height-base);
  color: var(--color-secondary);
  background-color: var(--color-light);
  padding-top: 76px;
}

/* Custom Bootstrap Overrides */
.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #008a91;
  border-color: #008a91;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.bg-primary {
  background-color: var(--color-primary) !important;
}

.text-primary {
  color: var(--color-primary) !important;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

/* Hero Illustration */
.hero-illustration {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 400px;
}

.space-grid {
  display: grid;
  grid-template-columns: repeat(3, 80px);
  grid-template-rows: repeat(3, 80px);
  gap: 10px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-xl);
  backdrop-filter: blur(10px);
}

.grid-item {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius);
  transition: var(--transition-base);
  position: relative;
}

.grid-item.active {
  background: var(--color-accent);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.grid-item::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  opacity: 0;
  transition: var(--transition-base);
}

.grid-item.active::before {
  opacity: 1;
}

/* Category Sections */
.category-section {
  border: 2px solid transparent;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition-base);
  background: rgba(0, 173, 181, 0.05);
}

.category-section:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.category-title {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
}

.category-title i {
  font-size: 1.2em;
  color: var(--color-accent);
}

/* Form Controls */
.form-control {
  border-radius: var(--border-radius);
  border: 2px solid #e9ecef;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem rgba(0, 173, 181, 0.25);
}

.form-label {
  font-weight: 500;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
}

/* Cards */
.card {
  border: none;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  border-bottom: none;
  font-weight: 600;
}

/* Results Section */
.result-summary {
  background: rgba(0, 173, 181, 0.1);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-primary);
}

.space-suggestion .alert {
  border: none;
  background: linear-gradient(45deg, rgba(0, 173, 181, 0.1), rgba(255, 211, 105, 0.1));
  border-left: 4px solid var(--color-accent);
}

.progress {
  height: 12px;
  border-radius: 6px;
  background-color: rgba(0, 173, 181, 0.1);
}

.progress-bar {
  border-radius: 6px;
  transition: width 0.6s ease;
}

/* Chart Container */
.chart-container {
  position: relative;
  height: 200px;
  background: rgba(0, 173, 181, 0.05);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

#spaceChart {
  max-width: 100%;
  height: auto;
}

/* FAQ Section */
.accordion-button {
  font-weight: 500;
  color: var(--color-secondary);
}

.accordion-button:not(.collapsed) {
  background-color: rgba(0, 173, 181, 0.1);
  color: var(--color-primary);
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(0, 173, 181, 0.25);
}

/* Offcanvas */
.offcanvas-header {
  background: var(--color-primary);
  color: var(--color-white);
}

.offcanvas-title i {
  color: var(--color-accent);
}

.tip-section {
  background: rgba(0, 173, 181, 0.05);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border-left: 3px solid var(--color-primary);
}

.tip-section h6 {
  color: var(--color-primary);
  font-weight: 600;
}

.tip-section i {
  color: var(--color-accent);
}

/* Ads Container */
.ad-container {
  background: rgba(0, 173, 181, 0.05);
  border: 2px dashed rgba(0, 173, 181, 0.3);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  text-align: center;
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ad-container::before {
  content: 'Publicidade';
  color: rgba(0, 173, 181, 0.6);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Footer */
footer {
  background: var(--color-dark) !important;
  color: var(--color-light);
}

footer h5 {
  color: var(--color-primary);
}

footer .social-links a {
  font-size: 1.2em;
  transition: var(--transition-fast);
}

footer .social-links a:hover {
  color: var(--color-accent) !important;
  transform: translateY(-2px);
}

/* Dark Mode Styles */
[data-bs-theme="dark"] .hero-section {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-secondary) 100%);
}

[data-bs-theme="dark"] .category-section {
  background: rgba(0, 173, 181, 0.1);
  border-color: rgba(0, 173, 181, 0.2);
}

[data-bs-theme="dark"] .card {
  background-color: var(--color-secondary);
  color: var(--color-light);
}

[data-bs-theme="dark"] .form-control {
  background-color: var(--color-dark);
  border-color: rgba(0, 173, 181, 0.3);
  color: var(--color-light);
}

[data-bs-theme="dark"] .form-control:focus {
  background-color: var(--color-dark);
  border-color: var(--color-primary);
  color: var(--color-light);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-primary);
  border-top: 2px solid transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-section {
    padding: var(--spacing-xl) 0;
  }
  
  .hero-illustration {
    height: 300px;
    margin-top: var(--spacing-lg);
  }
  
  .space-grid {
    grid-template-columns: repeat(3, 60px);
    grid-template-rows: repeat(3, 60px);
    gap: 8px;
  }
  
  .category-section {
    padding: var(--spacing-md);
  }
  
  .card {
    margin-bottom: var(--spacing-lg);
  }
  
  .result-summary {
    font-size: var(--font-size-sm);
  }
  
  .btn {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
  
  .btn:last-child {
    margin-bottom: 0;
  }
}

@media (max-width: 576px) {
  .display-4 {
    font-size: 2rem;
  }
  
  .lead {
    font-size: 1rem;
  }
  
  .hero-illustration {
    height: 250px;
  }
  
  .space-grid {
    grid-template-columns: repeat(3, 50px);
    grid-template-rows: repeat(3, 50px);
    gap: 6px;
    padding: var(--spacing-md);
  }
  
  .category-title {
    font-size: 1rem;
  }
  
  .navbar-brand {
    font-size: 1.2rem;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .offcanvas,
  .modal,
  .ad-container,
  footer .social-links {
    display: none !important;
  }
  
  body {
    padding-top: 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  .hero-section {
    background: none !important;
    color: var(--color-dark) !important;
  }
}

/* Accessibility Improvements */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Focus Styles */
.btn:focus,
.form-control:focus,
.accordion-button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #0066cc;
    --color-secondary: #000000;
    --color-accent: #ff6600;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-light);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #008a91;
}

/* Utility Classes */
.text-accent {
  color: var(--color-accent) !important;
}

.bg-accent {
  background-color: var(--color-accent) !important;
}

.border-primary {
  border-color: var(--color-primary) !important;
}

.shadow-custom {
  box-shadow: var(--shadow-lg) !important;
}

.rounded-custom {
  border-radius: var(--border-radius-xl) !important;
}

.transition-custom {
  transition: var(--transition-base) !important;
}