/* =============================================
   OM Interior Decor - Responsive Styles
   Mobile-first breakpoints
   ============================================= */

/* --- Tablet (max 1024px) --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }

  .nav-list {
    gap: 22px;
  }

  .nav-link {
    font-size: 0.75rem;
  }

  .nav-cta .btn {
    padding: 10px 18px;
    font-size: 0.6875rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image img {
    height: 400px;
  }

  .mvv-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-step {
    flex: 0 0 calc(100% / 3);
    margin-bottom: 40px;
  }

  .process-connector {
    display: none;
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Mobile (max 768px) --- */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
    --section-padding: 60px 0;
  }

  .logo-img {
    height: 44px;
    max-width: 160px;
  }

  .logo-header .logo-img {
    height: 58px;
    width: 58px;
    max-width: 58px;
  }

  .logo-footer .logo-img {
    height: 56px;
    width: 56px;
    max-width: 56px;
  }

  .logo-img-footer {
    height: 64px;
    max-width: 200px;
  }

  /* Navigation */
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    padding: 100px 40px 40px;
    transition: right 0.4s ease;
    z-index: 999;
  }

  .nav.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .nav-cta {
    margin-left: 0;
    margin-top: 16px;
  }

  .nav-cta .btn {
    width: 100%;
  }

  /* Overlay when menu open */
  .nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  .hero-logo {
    width: 90px;
  }

  .loader-logo-img {
    width: 110px;
  }

  /* Hero */
  .hero-content {
    padding: 100px 20px 60px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-buttons .btn {
    width: 100%;
    max-width: 280px;
  }

  /* About */
  .about-features {
    grid-template-columns: 1fr;
  }

  .about-image-frame {
    display: none;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Process - Vertical Timeline */
  .process-timeline {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .process-step {
    flex: none;
    width: 100%;
    max-width: 300px;
    padding: 0;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .process-step::after {
    content: '↓';
    display: block;
    color: var(--color-gold);
    font-size: 1.5rem;
    margin: 10px 0;
  }

  .process-step:last-child::after {
    display: none;
  }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .portfolio-filters {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 0.75rem;
  }

  /* Why Choose Us */
  .why-grid {
    grid-template-columns: 1fr;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form,
  .contact-info-card {
    padding: 24px;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  /* Floating buttons */
  .floating-buttons {
    bottom: 20px;
    right: 20px;
  }

  .float-btn {
    width: 44px;
    height: 44px;
    font-size: 1.125rem;
  }

  /* Lightbox */
  .lightbox-prev {
    left: 10px;
  }

  .lightbox-next {
    right: 10px;
  }
}

/* --- Small Mobile (max 480px) --- */
@media (max-width: 480px) {
  .section-header {
    margin-bottom: 40px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .testimonial-card {
    padding: 20px 10px;
  }

  .mvv-card {
    padding: 30px 20px;
  }
}

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

  html {
    scroll-behavior: auto;
  }

  .hero-bg {
    animation: none;
  }
}