/* ===== ESTILOS RESPONSIVOS ===== */

/* ===== TABLETS (768px - 1024px) ===== */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .quote-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .types-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .materials-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-content {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

/* ===== MÓVILES GRANDES (576px - 767px) ===== */
@media (max-width: 767px) {
  :root {
    --spacing-3xl: 2rem;
    --spacing-2xl: 1.5rem;
    --spacing-xl: 1rem;
    --spacing-lg: 0.75rem;
  }
  
  .header {
    padding: var(--spacing-2xl) 0;
  }
  
  .logo h1 {
    font-size: 1.75rem;
  }
  
  .header-subtitle {
    font-size: 1rem;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }
  
  .hero-text h2 {
    font-size: 2rem;
  }
  
  .hero-text p {
    font-size: 1rem;
  }
  
  .construction-preview {
    grid-template-columns: 1fr;
    max-width: 280px;
  }
  
  .preview-item {
    padding: var(--spacing-md);
  }
  
  .preview-item i {
    font-size: 1.5rem;
  }
  
  .preview-item h3 {
    font-size: 0.875rem;
  }
  
  .preview-item p {
    font-size: 0.75rem;
  }
  
  .types-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .type-card {
    padding: var(--spacing-lg);
  }
  
  .type-icon {
    width: 60px;
    height: 60px;
  }
  
  .type-icon i {
    font-size: 1.5rem;
  }
  
  .quote-form {
    padding: var(--spacing-lg);
  }
  
  .form-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
  }
  
  .form-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .form-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .quote-results {
    padding: var(--spacing-lg);
  }
  
  .total-value {
    font-size: 2rem;
  }
  
  .breakdown-grid {
    grid-template-columns: 1fr;
  }
  
  .materials-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-btn {
    width: 100%;
    text-align: center;
  }
  
  .materials-grid {
    grid-template-columns: 1fr;
  }
  
  .material-card {
    padding: var(--spacing-lg);
  }
  
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
    z-index: 999;
  }
  
  .nav-menu.active {
    transform: translateY(0);
  }
  
  .nav-menu li {
    margin: 0;
  }
  
  .nav-menu a {
    display: block;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: center;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
}

/* ===== MÓVILES PEQUEÑOS (hasta 575px) ===== */
@media (max-width: 575px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .cta-btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .hero-text h2 {
    font-size: 1.75rem;
  }
  
  .hero-text p {
    font-size: 0.875rem;
  }
  
  .hero-features {
    gap: var(--spacing-sm);
  }
  
  .feature {
    gap: var(--spacing-sm);
  }
  
  .feature i {
    font-size: 1rem;
    width: 20px;
  }
  
  .section-header h2 {
    font-size: 1.5rem;
  }
  
  .section-header p {
    font-size: 0.875rem;
  }
  
  .type-card {
    padding: var(--spacing-md);
  }
  
  .type-features li {
    font-size: 0.875rem;
  }
  
  .quote-form {
    padding: var(--spacing-md);
  }
  
  .form-section h3 {
    font-size: 1.125rem;
  }
  
  .form-checkboxes {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .checkbox-label {
    width: 100%;
  }
  
  .quote-results {
    padding: var(--spacing-md);
  }
  
  .results-header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
    text-align: center;
  }
  
  .total-section {
    padding: var(--spacing-md);
  }
  
  .total-value {
    font-size: 1.75rem;
  }
  
  .total-details {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .results-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .results-actions .btn {
    width: 100%;
  }
  
  .materials-filters {
    gap: var(--spacing-sm);
  }
  
  .filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
  }
  
  .material-card {
    padding: var(--spacing-md);
  }
  
  .material-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }
  
  .contact-container {
    gap: var(--spacing-lg);
  }
  
  .contact-form {
    padding: var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
}

/* ===== ORIENTACIÓN LANDSCAPE EN MÓVILES ===== */
@media (max-width: 767px) and (orientation: landscape) {
  .header {
    padding: var(--spacing-lg) 0;
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .construction-types {
    padding: var(--spacing-xl) 0;
  }
  
  .quote-section {
    padding: var(--spacing-xl) 0;
  }
  
  .materials-section {
    padding: var(--spacing-xl) 0;
  }
  
  .contact-section {
    padding: var(--spacing-xl) 0;
  }
  
  .footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
  }
}

/* ===== DISPOSITIVOS DE ALTA RESOLUCIÓN ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .type-icon,
  .material-card,
  .quote-form,
  .quote-results {
    border-width: 0.5px;
  }
}

/* ===== DISPOSITIVOS CON PREFERENCIA DE REDUCIR MOVIMIENTO ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .preview-item:hover,
  .type-card:hover,
  .material-card:hover {
    transform: none;
  }
  
  .cta-btn:hover,
  .btn:hover {
    transform: none;
  }
}

/* ===== DISPOSITIVOS CON PREFERENCIA DE ALTO CONTRASTE ===== */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #000080;
    --primary-dark: #000060;
    --secondary-color: #006000;
    --secondary-dark: #004000;
    --accent-color: #804000;
    --gray-200: #404040;
    --gray-300: #606060;
    --gray-400: #808080;
    --gray-500: #a0a0a0;
    --gray-600: #c0c0c0;
    --gray-700: #e0e0e0;
    --gray-800: #f0f0f0;
    --gray-900: #ffffff;
  }
  
  .type-card,
  .quote-form,
  .quote-results,
  .material-card {
    border-width: 2px;
  }
}

/* ===== IMPRESIÓN ===== */
@media print {
  .header,
  .navbar,
  .hero,
  .construction-types,
  .materials-section,
  .contact-section,
  .footer,
  .form-actions,
  .results-actions {
    display: none !important;
  }
  
  .quote-section {
    padding: 0;
    background: white;
  }
  
  .quote-container {
    grid-template-columns: 1fr;
    gap: 0;
    max-width: none;
  }
  
  .quote-form {
    display: none;
  }
  
  .quote-results {
    box-shadow: none;
    border: none;
    padding: 0;
    max-height: none;
    overflow: visible;
  }
  
  .total-section {
    border: 2px solid black;
    background: white;
  }
  
  .breakdown-item,
  .material-item,
  .observations-list li {
    border: 1px solid black;
    background: white;
  }
  
  .type-card {
    break-inside: avoid;
    page-break-inside: avoid;
  }
  
  * {
    color: black !important;
    background: white !important;
  }
}