/* Responsive Design - Mobile-First Approach */

/* Mobile Devices (< 768px) */
@media (max-width: 767px) {
  /* Typography */
  :root {
    --font-size-h1: 2.5rem;      /* 40px */
    --font-size-h2: 2rem;        /* 32px */
    --font-size-h3: 1.5rem;      /* 24px */
    --font-size-body: 1rem;      /* 16px */
  }

  /* Container */
  .container {
    padding: 0 var(--space-sm);
  }

  /* Sections */
  .section {
    padding: var(--space-xl) 0;
  }

  .section--hero {
    padding: var(--space-xl) 0 var(--space-lg);
  }

  /* Header - allow nav to wrap to second row */
  .header__container {
    flex-wrap: wrap;
  }

  /* Header Navigation - in-flow dropdown */
  .nav {
    flex-basis: 100%;
    order: 3;
    flex-direction: column;
    gap: 0;
    padding: 0;
    background-color: var(--color-white);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
  }

  .nav.active {
    max-height: 400px;
    box-shadow: var(--shadow-large);
  }

  .nav__link {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link::after {
    display: none;
  }

  /* Mobile Menu Toggle */
  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active .menu-toggle__bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .menu-toggle.active .menu-toggle__bar:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active .menu-toggle__bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  /* Mobile Menu Overlay */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    z-index: 99;
  }

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

  /* Gallery Grid - Single column on mobile, preserve aspect ratios */
  .gallery {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .gallery__item[data-aspect="landscape"],
  .gallery__item[data-aspect="portrait"],
  .gallery__item[data-aspect="square"] {
    grid-column: span 1;
  }

  .gallery__image {
    width: 100%;
    height: auto;
  }

  /* Hero */
  .hero__phone {
    font-size: 1.25rem;
  }

  /* Testimonials */
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* About Profile */
  .about-profile {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Footer */
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    text-align: center;
  }

  /* Buttons */
  .btn--large {
    padding: var(--space-sm) var(--space-lg);
    font-size: 1rem;
  }
}

/* Tablet Devices (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  /* Typography */
  :root {
    --font-size-h1: 3rem;        /* 48px */
    --font-size-h2: 2.25rem;     /* 36px */
  }

  /* Gallery Grid - 2 columns on tablet */
  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Landscape spans full row on tablet, portrait 2 per row */
  .gallery__item[data-aspect="landscape"] {
    grid-column: span 2;
  }

  .gallery__item[data-aspect="portrait"],
  .gallery__item[data-aspect="square"] {
    grid-column: span 1;
  }

  /* Testimonials */
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  /* Gallery Grid - 4 columns: portrait 4/row, landscape 2/row */
  .gallery {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
  .gallery {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Larger spacing */
  .section {
    padding: var(--space-3xl) 0;
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Ensure images look sharp on retina displays */
  .gallery__image,
  .lightbox__image {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* Landscape Mode on Mobile */
@media (max-width: 767px) and (orientation: landscape) {
  .section--hero {
    padding: var(--space-lg) 0;
  }

  .hero__title {
    font-size: 2rem;
  }
}

/* Print Styles */
@media print {
  .header,
  .footer,
  .nav,
  .menu-toggle,
  .btn,
  .lightbox {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }

  .gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: 10mm;
  }
}

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

/* Dark Mode Support (future enhancement) */
@media (prefers-color-scheme: dark) {
  /* Dark mode styles can be added here if desired */
  /* For now, we maintain the light classic portfolio aesthetic */
}