/**
 * REDEIL - CSS Core Web Vitals Optimization
 * Fixes for CLS (Cumulative Layout Shift) and LCP
 * v1.0.0
 */

/* ========================================
   CLS FIX: Reserve space for images
   ======================================== */

/* Gallery images - aspect ratio 2:3 (portrait) */
.gallery__image {
  aspect-ratio: 2 / 3;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Gallery container - reserve space */
.gallery__item {
  aspect-ratio: 2 / 3;
  overflow: hidden;
}

/* Blog card images */
.blog-card__image {
  aspect-ratio: 16 / 10;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Article gallery images */
.article-gallery__image {
  aspect-ratio: 4 / 3;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Service grid images - already have aspect-ratio in main CSS, reinforce */
.lighting__image,
.audio__image,
.equipment__image {
  aspect-ratio: 2 / 3;
}

.lighting__img,
.audio__img,
.equipment__img {
  aspect-ratio: 2 / 3;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Logo placeholder - prevent shift */
.logo__image {
  width: 194px;
  height: 70px;
}

/* ========================================
   CLS FIX: Font display optimization
   ======================================== */
@font-face {
  font-display: swap;
}

/* ========================================
   CLS FIX: Prevent header jump
   ======================================== */
.header {
  min-height: 92px;
}

@media (max-width: 733px) {
  .header {
    min-height: 60px;
  }
}

/* ========================================
   CLS FIX: Breadcrumbs placeholder
   ======================================== */
.breadcrumbs {
  min-height: 48px;
}

@media (max-width: 768px) {
  .breadcrumbs {
    min-height: 42px;
  }
}

/* ========================================
   CLS FIX: Footer placeholder
   ======================================== */
.footer {
  min-height: 400px;
}

@media (max-width: 768px) {
  .footer {
    min-height: 600px;
  }
}

/* ========================================
   CLS FIX: CTA sections
   ======================================== */
.cta-section,
.cta-dark {
  min-height: 300px;
}

@media (max-width: 768px) {
  .cta-section,
  .cta-dark {
    min-height: 250px;
  }
}

/* ========================================
   CLS FIX: Testimonials
   ======================================== */
.testimonials-section {
  min-height: 400px;
}

/* ========================================
   CLS FIX: FAQ accordion
   ======================================== */
.faq__item {
  min-height: 60px;
}

.faq__answer {
  min-height: 0;
}

/* ========================================
   LCP FIX: Hero/Intro section optimization
   ======================================== */
.intro-section {
  contain: layout style;
}

/* ========================================
   CONTENT VISIBILITY: Lazy render off-screen content
   ======================================== */
.footer,
.testimonials-section,
.faq-section {
  content-visibility: auto;
  contain-intrinsic-size: auto 400px;
}

/* ========================================
   IMAGE RENDERING OPTIMIZATION
   ======================================== */
img {
  /* Prevent image decode from blocking main thread */
  image-rendering: auto;
}

/* Placeholder while images load */
img[loading="lazy"] {
  background-color: #f5f5f7;
}

/* ========================================
   MOBILE-SPECIFIC FIXES
   ======================================== */
@media (max-width: 767px) {
  /* Reserve full width for mobile grids */
  .lighting__grid,
  .audio__grid,
  .equipment__grid {
    min-height: 480px; /* One card visible */
  }

  /* Gallery mobile layout */
  .gallery {
    min-height: 500px;
  }

  /* Blog grid mobile */
  .blog-grid {
    min-height: 400px;
  }
}

/* ========================================
   PRELOAD HINTS (CSS containment)
   ======================================== */
.services-section,
.contact-section {
  contain: layout style;
}

/* ========================================
   SKELETON LOADING STYLES (optional)
   ======================================== */
.skeleton {
  background: linear-gradient(90deg, #f5f5f7 25%, #e8e8ed 50%, #f5f5f7 75%);
  background-size: 200% 100%;
}

/* ========================================
   MOBILE OPTIMIZATION ENHANCEMENTS
   ======================================== */

/* Touch-friendly tap targets (minimum 44x44px) */
@media (max-width: 767px) {
  a,
  button,
  input[type="submit"],
  .btn,
  .nav__link,
  .mobile-menu-link {
    min-height: 44px;
    min-width: 44px;
  }

  /* Better touch spacing */
  .contact__phone,
  .contact__whatsapp {
    min-height: 48px;
    padding: 14px 20px;
  }

  /* Improve form inputs for mobile */
  input,
  textarea,
  select {
    font-size: 16px !important; /* Prevents zoom on iOS */
    padding: 14px 16px;
    border-radius: 10px;
  }

  /* Better button sizing */
  .cta__button,
  .article-cta__button,
  .contact__submit-btn,
  .form__submit {
    width: 100%;
    min-height: 52px;
    font-size: 17px;
  }

  /* Improve readability */
  body {
    font-size: 16px;
    line-height: 1.6;
  }

  p {
    line-height: 1.7;
  }

  /* Better spacing for mobile */
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  /* Card spacing optimization */
  .lighting__item,
  .audio__item,
  .equipment__item {
    margin-bottom: 16px;
  }

  /* Blog cards mobile optimization */
  .blog-card {
    margin-bottom: 20px;
  }

  .blog-card__content {
    padding: 20px;
  }

  .blog-card__title {
    font-size: 1.25rem;
    line-height: 1.3;
  }

  /* FAQ mobile optimization */
  .faq__question {
    font-size: 1rem;
    padding: 18px 16px;
  }

  .faq__answer {
    padding: 0 16px 18px;
  }

  /* Footer mobile spacing */
  .footer-column {
    margin-bottom: 32px;
  }

  .footer-links a {
    padding: 10px 0;
    display: block;
  }

  /* Improve scroll performance */
  .gallery,
  .lighting__grid,
  .audio__grid,
  .equipment__grid,
  .blog-grid {
    -webkit-overflow-scrolling: touch;
  }

  /* WhatsApp button mobile enhancement */
  .wa-float {
    bottom: 16px;
    right: 16px;
    width: 60px;
    height: 60px;
  }

  .wa-float__icon {
    width: 32px;
    height: 32px;
  }
}

/* ========================================
   TABLET OPTIMIZATION (768px - 1024px)
   ======================================== */
@media (min-width: 768px) and (max-width: 1024px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }

  /* Grid adjustments */
  .lighting__grid,
  .audio__grid,
  .equipment__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  /* Blog grid tablet */
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  /* Form optimizations */
  .form__row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ========================================
   ACCESSIBILITY IMPROVEMENTS
   ======================================== */

/* Focus indicators for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
.btn:focus-visible {
  outline: 2px solid #0071e3;
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn,
  .cta__button,
  .contact__whatsapp {
    border: 2px solid currentColor;
  }

  a {
    text-decoration: underline;
  }
}

/* ========================================
   PRINT OPTIMIZATION
   ======================================== */
@media print {
  .header,
  .footer,
  .wa-float,
  .mobile-menu,
  .mobile-menu-btn,
  nav,
  .cta-section,
  .contact-section form {
    display: none !important;
  }

  .main {
    padding: 0;
  }

  body {
    font-size: 12pt;
    line-height: 1.5;
    color: #000;
    background: #fff;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  img {
    max-width: 100% !important;
  }
}