/* ========================================
   Responsive Styles
   ======================================== */

/* Tablet and below (< 1024px) */
@media (max-width: 1023px) {
  :root {
    --font-size-5xl: 2.5rem;   /* 40px */
    --font-size-4xl: 2rem;     /* 32px */
    --font-size-3xl: 1.75rem;  /* 28px */
    --container-padding: var(--spacing-md);
  }

  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-with-image {
    min-height: 500px;
  }

  .floating-filters-inner {
    flex-wrap: wrap;
    padding: var(--spacing-md) var(--spacing-lg);
  }

  .floating-filters .form-group {
    flex: 1 1 calc(50% - var(--spacing-sm));
    min-width: 150px;
  }

  .floating-filters .btn {
    flex: 1 1 100%;
    margin-top: var(--spacing-sm);
  }

  .experience-photos {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

/* Mobile and Tablet (< 1024px) */
@media (max-width: 1023px) {
  :root {
    --font-size-5xl: 2rem;     /* 32px */
    --font-size-4xl: 1.75rem;  /* 28px */
    --font-size-3xl: 1.5rem;   /* 24px */
    --spacing-3xl: 2rem;       /* 32px */
    --card-padding: var(--spacing-lg);
    --header-height: 64px;
  }

  .header .container {
    padding: 0 var(--spacing-md);
  }

  .logo {
    font-size: var(--font-size-xl);
  }

  .nav {
    gap: var(--spacing-sm);
  }

  .nav-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
  }

  .hero {
    padding: var(--spacing-2xl) 0;
  }

  .hero-with-image {
    min-height: 450px;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .floating-filters {
    position: absolute;
    bottom: -70px;
    width: calc(100% - var(--spacing-lg));
    max-width: 100%;
  }

  .floating-filters-inner {
    flex-direction: row;
    flex-wrap: wrap;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
  }

  .floating-filters .form-group {
    flex: 1 1 calc(50% - var(--spacing-xs));
    min-width: 120px;
    margin-bottom: 0;
  }

  .floating-filters .form-label {
    font-size: var(--font-size-xs);
    margin-bottom: 4px;
  }

  .floating-filters .form-input {
    height: 40px;
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .floating-filters .btn {
    height: 40px;
    flex: 1 1 100%;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .section-description {
    font-size: var(--font-size-base);
  }

  .experience-photos {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .experience-image {
    height: 250px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .step-image {
    height: 180px;
  }

  .step-title {
    font-size: var(--font-size-lg);
  }

  .step-description {
    font-size: var(--font-size-sm);
  }

  .grid-cols-4,
  .grid-cols-3,
  .grid-cols-2 {
    grid-template-columns: repeat(1, 1fr);
  }

  .grid {
    gap: var(--spacing-lg);
  }

  .card {
    padding: var(--spacing-lg);
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-footer {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .btn-sm {
    height: var(--button-height-md);
  }

  .modal {
    margin: var(--spacing-md);
  }

  .modal-header,
  .modal-body,
  .modal-footer {
    padding: var(--spacing-lg);
  }

  .modal-footer {
    flex-direction: column-reverse;
  }

  .modal-footer .btn {
    width: 100%;
  }

  /* Hide some elements on mobile */
  .hide-on-mobile {
    display: none !important;
  }

  /* Show mobile menu icon */
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    font-size: var(--font-size-2xl);
  }

  .mobile-menu-toggle:hover {
    background-color: var(--color-bg-secondary);
  }

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(30px) saturate(180%);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
  }

  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    width: 100%;
    text-align: center;
    padding: var(--spacing-md);
  }

  /* Show nav buttons in mobile menu */
  .nav .btn {
    width: 100%;
  }
}

/* Extra small mobile (< 375px) */
@media (max-width: 374px) {
  :root {
    --font-size-5xl: 1.75rem;  /* 28px */
    --font-size-4xl: 1.5rem;   /* 24px */
    --font-size-3xl: 1.25rem;  /* 20px */
    --spacing-2xl: 1.5rem;     /* 24px */
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .card {
    padding: var(--spacing-md);
  }
}

/* Landscape mobile */
@media (max-height: 500px) and (orientation: landscape) {
  .hero {
    padding: var(--spacing-xl) 0;
  }

  .section {
    padding: var(--spacing-xl) 0;
  }
}

/* Tablet (640px - 1023px) */
@media (min-width: 640px) and (max-width: 1023px) {
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .hide-on-tablet {
    display: none !important;
  }
}

/* Desktop (>= 1024px) */
@media (min-width: 1024px) {
  .hide-on-desktop {
    display: none !important;
  }

  .mobile-menu-toggle {
    display: none;
  }

  /* Hover effects only on desktop */
  .card-hover:hover {
    transform: translateY(-8px);
  }
}

/* Large desktop (>= 1280px) */
@media (min-width: 1280px) {
  .grid-cols-4-xl {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Extra large desktop (>= 1536px) */
@media (min-width: 1536px) {
  :root {
    --container-max-width: 1440px;
  }
}

/* Print styles */
@media print {
  .header,
  .nav,
  .btn,
  .modal-backdrop {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    border: 1px solid #ddd;
    box-shadow: none;
    page-break-inside: avoid;
  }
}

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

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --color-border: rgba(255, 255, 255, 0.3);
    --color-divider: rgba(255, 255, 255, 0.2);
  }

  .btn {
    border: 2px solid currentColor;
  }
}

/* Dark mode support (already default, but explicit) */
@media (prefers-color-scheme: dark) {
  /* Already dark by default */
}

/* Light mode override (if needed in future) */
@media (prefers-color-scheme: light) {
  /* Can be implemented later if needed */
}