/* 
 * Solar LED Bike Trailer Template - Responsive CSS
 * Media Queries for all screen sizes and devices
 */

/* ============================================================================
   MEDIA QUERIES - MOBILE FIRST APPROACH
   ============================================================================ */

/* Extra Small Devices (phones, 576px and down) */
@media (max-width: 575.98px) {
  :root {
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1.125rem;
    --spacing-3xl: 2rem;
    --spacing-2xl: 1.5rem;
  }
  
  .hero-section {
    min-height: 100vh;
    padding: var(--spacing-xl) 0;
    text-align: center;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
    line-height: 1.1;
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .navbar-brand {
    font-size: var(--font-size-base);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .team-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .testimonial-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .contact-form {
    padding: var(--spacing-lg);
    margin: 0 var(--spacing-md);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  .team-photo {
    width: 120px;
    height: 120px;
  }
  
  .service-card, .feature-card, .testimonial-card, 
  .stats-card, .industry-card, .eco-card, .tech-card, 
  .success-card, .spec-card, .process-card, .support-card,
  .career-card, .info-card {
    padding: var(--spacing-lg);
  }
  
  .team-member {
    padding: var(--spacing-lg);
  }
  
  .faq-question,
  .faq-answer {
    padding: var(--spacing-md);
  }
  
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
  
  .btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    width: calc(100% - 40px);
    margin-left: 40px;
  }
  
  .timeline-item::before {
    left: -26px;
  }
  
  .timeline-item:nth-child(even) {
    margin-left: 40px;
  }
  
  .timeline-item:nth-child(even)::before {
    left: -26px;
  }
  
  .process-step .service-icon {
    width: 60px;
    height: 60px;
    font-size: 1.22rem;
  }
  
  .contact-info {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
  }
  
  .breadcrumb-nav {
    padding: var(--spacing-lg) 0 var(--spacing-sm) 0;
    margin-top: 70px;
  }
  
  .breadcrumb-item img {
    height: 16px;
  }
  
  #space {
    min-height: 60vh;
    margin: var(--spacing-lg) 0;
  }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
  
  .testimonial-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .contact-form {
    margin: 0 var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .btn {
    width: auto;
    margin-bottom: 0;
  }
  
  .timeline-item {
    width: calc(100% - 40px);
  }
  
  .timeline-item:nth-child(even) {
    margin-left: 40px;
  }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .hero-section {
    padding: var(--spacing-2xl) 0;
  }
  
  .timeline::before {
    left: 50%;
  }
  
  .timeline-item {
    width: calc(50% - var(--spacing-xl));
  }
  
  .timeline-item:nth-child(odd) {
    margin-left: 0;
  }
  
  .timeline-item:nth-child(even) {
    margin-left: calc(50% + var(--spacing-xl));
  }
  
  .timeline-item:nth-child(odd)::before {
    right: calc(-var(--spacing-xl) - 6px);
  }
  
  .timeline-item:nth-child(even)::before {
    left: calc(-var(--spacing-xl) - 6px);
  }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .team-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .testimonial-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(5, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .team-grid {
    grid-template-columns: repeat(5, 1fr);
  }
  
  .testimonial-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .footer-content {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .container {
    max-width: 1200px;
  }
}

/* ============================================================================
   LANDSCAPE ORIENTATION
   ============================================================================ */
@media (orientation: landscape) and (max-height: 500px) {
  .hero-section {
    min-height: 100vh;
    padding: var(--spacing-lg) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .navbar {
    padding: var(--spacing-xs) 0;
  }
  
  header {
    padding: var(--spacing-xs) 0;
  }
}

/* ============================================================================
   HIGH DPI DISPLAYS
   ============================================================================ */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .hero-section::before {
    background-image: url('../DRI_images/hero-bg@2x.webp');
  }
  
  .gallery-item img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
  
  .team-photo {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* ============================================================================
   PRINT SPECIFIC RESPONSIVE
   ============================================================================ */
@media print {
  .services-grid,
  .team-grid,
  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .section {
    padding: var(--spacing-lg) 0;
    page-break-inside: avoid;
  }
  
  .hero-section {
    min-height: auto;
    padding: var(--spacing-xl) 0;
    page-break-after: always;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--medium-gray);
    page-break-inside: avoid;
  }
  
  .btn {
    display: none;
  }
  
  .navbar,
  .breadcrumb-nav {
    display: none;
  }
  
  .footer {
    page-break-before: always;
  }
}

/* ============================================================================
   ACCESSIBILITY RESPONSIVE
   ============================================================================ */
@media (prefers-contrast: high) {
  :root {
    --primary-blue: #0c47a5;
    --primary-green: #005f02;
    --primary-orange: #ba7100;
    --primary-purple: #510bd6;
    --primary-coral: #d30016;
    --text-primary: #000000;
    --text-secondary: #2d2b2b;
    --light-gray: #e5e4e4;
  }
  
  .card {
    border: 2px solid var(--medium-gray);
  }
  
  .btn {
    border: 2px solid currentColor;
  }
  
  .form-control {
    border-width: 2px;
  }
  
  .hero-section::before {
    opacity: 0.05;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card,
  .service-card,
  .team-member,
  .gallery-item,
  .btn,
  .testimonial-card,
  .feature-card {
    transition: none;
  }
  
  .card:hover,
  .service-card:hover,
  .team-member:hover,
  .gallery-item:hover,
  .btn:hover,
  .testimonial-card:hover,
  .feature-card:hover {
    transform: none;
  }
  
  .fade-in,
  .slide-in-up,
  .slide-in-left,
  .slide-in-right,
  .fade-in-on-scroll {
    animation: none;
    opacity: 1;
    transform: none;
  }
  
  .spinner,
  .spinner-border {
    animation: none;
    border-top-color: var(--primary-blue);
  }
}

/* ============================================================================
   CUSTOM BREAKPOINTS
   ============================================================================ */

/* Extra Small Mobile (iPhone SE and smaller) */
@media (max-width: 375px) {
  :root {
    --font-size-4xl: 1.5rem;
    --font-size-3xl: 1.25rem;
    --spacing-3xl: 1.5rem;
    --spacing-2xl: 1rem;
  }
  
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  .gallery-layout {
    grid-template-columns: 1fr;
  }
  
  .contact-form {
    padding: var(--spacing-md);
    margin: 0 var(--spacing-sm);
  }
  
  .navbar-brand {
    font-size: var(--font-size-sm);
  }
  
  .navbar-nav .nav-link {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm);
  }
  
  .hero-section {
    padding: var(--spacing-lg) 0;
  }
  
  .section-desc {
    font-size: var(--font-size-sm);
  }
  
  .service-features {
    font-size: var(--font-size-sm);
  }
  
  .testimonial-text {
    font-size: var(--font-size-base);
  }
}

/* Ultra Wide Screens (4K and beyond) */
@media (min-width: 1600px) {
  .container {
    max-width: 1400px;
  }
  
  .hero-section {
    padding: var(--spacing-3xl) 0;
  }
  
  .section {
    padding: var(--spacing-3xl) 0;
  }
  
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .gallery-layout {
    grid-template-columns: repeat(8, 1fr);
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .section-title {
    font-size: 2.62rem;
  }
}

/* ============================================================================
   HOVER STATES (TOUCH-FRIENDLY)
   ============================================================================ */
@media (hover: hover) {
  .card:hover {
    transform: translateY(-5px);
  }
  
  .service-card:hover,
  .feature-card:hover,
  .testimonial-card:hover,
  .stats-card:hover,
  .industry-card:hover,
  .eco-card:hover,
  .tech-card:hover,
  .success-card:hover,
  .spec-card:hover,
  .process-card:hover,
  .support-card:hover,
  .career-card:hover,
  .info-card:hover {
    transform: translateY(-10px);
  }
  
  .team-member:hover {
    transform: translateY(-5px);
  }
  
  .gallery-item:hover {
    transform: scale(1.05);
  }
  
  .gallery-item:hover img {
    transform: scale(1.1);
  }
  
  .btn:hover {
    transform: translateY(-2px);
  }
  
  .team-photo:hover {
    transform: scale(1.05);
  }
  
  .navbar-nav .nav-link:hover {
    color: var(--primary-blue);
  }
  
  .faq-question:hover {
    background: var(--primary-blue);
    color: var(--white);
  }
}

@media (hover: none) {
  .card:hover,
  .service-card:hover,
  .team-member:hover,
  .gallery-item:hover,
  .btn:hover,
  .feature-card:hover,
  .testimonial-card:hover {
    transform: none;
  }
  
  .card:active,
  .service-card:active,
  .team-member:active,
  .gallery-item:active,
  .btn:active,
  .feature-card:active,
  .testimonial-card:active {
    transform: scale(0.98);
  }
  
  .gallery-item:active img {
    transform: scale(1.02);
  }
  
  .btn:active {
    transform: scale(0.95);
  }
}

/* ============================================================================
   CONTAINER QUERIES (Future-proofing)
   ============================================================================ */
@supports (container-type: inline-size) {
  .services-grid {
    container-type: inline-size;
  }
  
  @container (min-width: 600px) {
    .service-card {
      padding: var(--spacing-2xl);
    }
  }
  
  @container (min-width: 900px) {
    .services-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }
  
  .team-grid {
    container-type: inline-size;
  }
  
  @container (min-width: 500px) {
    .team-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @container (min-width: 800px) {
    .team-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }
  
  .gallery-layout {
    container-type: inline-size;
  }
  
  @container (min-width: 300px) {
    .gallery-layout {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @container (min-width: 600px) {
    .gallery-layout {
      grid-template-columns: repeat(4, 1fr);
    }
  }
  
  @container (min-width: 900px) {
    .gallery-layout {
      grid-template-columns: repeat(6, 1fr);
    }
  }
}

/* ============================================================================
   FALLBACKS FOR OLDER BROWSERS
   ============================================================================ */
@supports not (display: grid) {
  .services-grid,
  .team-grid,
  .testimonial-grid,
  .gallery-layout {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
  }
  
  .services-grid > *,
  .team-grid > *,
  .testimonial-grid > * {
    flex: 1 1 300px;
    max-width: 400px;
  }
  
  .gallery-layout > * {
    flex: 1 1 250px;
    max-width: 300px;
  }
  
  .footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
  }
  
  .footer-section {
    flex: 1 1 250px;
  }
}

@supports not (backdrop-filter: blur(10px)) {
  header {
    background: rgba(255, 255, 255, 0.98);
  }
  
  header.scrolled {
    background: rgba(255, 255, 255, 1);
  }
}

/* ============================================================================
   NAVIGATION RESPONSIVE
   ============================================================================ */
@media (max-width: 991.98px) {
  .navbar-collapse {
    background: var(--white);
    border-radius: var(--border-radius-md);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }
  
  .navbar-nav {
    text-align: center;
  }
  
  .navbar-nav .nav-link {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--light-gray);
  }
  
  .navbar-nav .nav-link:last-child {
    border-bottom: none;
  }
}

/* ============================================================================
   FORM RESPONSIVE
   ============================================================================ */
@media (max-width: 767.98px) {
  .contact-form .row {
    margin: 0;
  }
  
  .contact-form .col-md-6 {
    padding: 0;
    margin-bottom: var(--spacing-md);
  }
  
  .form-control {
    font-size: 16px; /* Prevents zoom on iOS */
  }
}

/* ============================================================================
   LOADING STATES RESPONSIVE
   ============================================================================ */
@media (max-width: 575.98px) {
  .spinner,
  .spinner-border {
    width: 30px;
    height: 30px;
    border-width: 3px;
  }
  
  .spinner-border-sm {
    width: 15px;
    height: 15px;
    border-width: 2px;
  }
}

/* ============================================================================
   NOTIFICATION RESPONSIVE
   ============================================================================ */
@media (max-width: 575.98px) {
  .notification {
    top: 80px;
    left: 10px;
    right: 10px;
    max-width: none;
  }
  
  .notification-content {
    padding: var(--spacing-md);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .notification-close {
    margin-left: 0;
    align-self: flex-end;
  }
}

/* ============================================================================
   HERO SECTION RESPONSIVE ADJUSTMENTS
   ============================================================================ */
@media (max-width: 991.98px) {
  .hero-section .col-lg-6:last-child {
    margin-top: var(--spacing-xl);
    text-align: center;
  }
  
  .hero-section img {
    max-width: 80%;
    height: auto;
  }
}

@media (max-width: 575.98px) {
  .hero-section .col-lg-6:last-child {
    margin-top: var(--spacing-lg);
  }
  
  .hero-section img {
    max-width: 90%;
  }
  
  .hero-section .btn {
    width: 100%;
    margin-top: var(--spacing-md);
  }
}

/* ============================================================================
   SECTION SPACING RESPONSIVE
   ============================================================================ */
@media (max-width: 767.98px) {
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .section:first-of-type {
    padding-top: var(--spacing-xl);
  }
}

@media (max-width: 575.98px) {
  .section {
    padding: var(--spacing-xl) 0;
  }
}

/* ============================================================================
   UTILITY CLASSES RESPONSIVE
   ============================================================================ */
@media (max-width: 575.98px) {
  .d-sm-none { display: none; }
  .d-sm-block { display: block; }
  .text-sm-center { text-align: center; }
  .text-sm-left { text-align: left; }
}

@media (max-width: 767.98px) {
  .d-md-none { display: none; }
  .d-md-block { display: block; }
  .text-md-center { text-align: center; }
  .text-md-left { text-align: left; }
}

@media (max-width: 991.98px) {
  .d-lg-none { display: none; }
  .d-lg-block { display: block; }
  .text-lg-center { text-align: center; }
  .text-lg-left { text-align: left; }
}

.hero-content {
    padding-top: 225px;
}