/* ===================================
   Cross-platform & responsive layer
   Screen sizes, touch, safe areas, OS prefs
   =================================== */

:root {
  --nav-height: 5.25rem;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --touch-min: 2.75rem;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-padding-top: calc(var(--nav-height) + var(--safe-top) + 0.5rem);
}

.navbar {
  padding-top: var(--safe-top);
}

.skip-link {
  top: calc(0.75rem + var(--safe-top));
  left: calc(0.75rem + var(--safe-left));
}

.footer-bottom {
  padding-bottom: calc(1rem + var(--safe-bottom));
}

/* Dynamic viewport height (mobile browser chrome) */
@supports (height: 100dvh) {
  .hero {
    min-height: max(32rem, calc(100dvh - var(--nav-height) - var(--safe-top)));
  }
}

/* Touch-friendly controls */
.contact-icon,
.theme-toggle,
.mobile-menu-toggle,
.nav-status-pill--cta {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media (pointer: coarse) {
  .contact-icon {
    width: var(--touch-min);
    height: var(--touch-min);
  }

  .nav-link {
    min-height: var(--touch-min);
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .btn {
    min-height: 3rem;
  }

  .btn:hover,
  .contact-icon:hover,
  .nav-status-pill--cta:hover {
    transform: none;
  }

  .project-card:hover {
    transform: none;
  }
}

/* Large desktops */
@media (min-width: 1400px) {
  :root {
    --container-max-width: 1280px;
  }

  .hero-content {
    gap: clamp(2.5rem, 5vw, 6rem);
  }
}

/* Tablets & small laptops */
@media (max-width: 1024px) {
  .nav-container {
    gap: 0.75rem;
  }

  .brand-tagline {
    font-size: 0.75rem;
  }

  .signal-board {
    width: 100%;
  }

  .project-card--featured {
    grid-column: span 1;
  }
}

@media (max-width: 840px) {
  .nav-container {
    min-height: auto;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }

  .nav-brand {
    flex: 1 1 auto;
    min-width: 0;
  }

  .brand-copy {
    min-width: 0;
  }

  .brand-name {
    font-size: 0.98rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-menu {
    order: 4;
    max-height: min(70vh, 28rem);
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .nav-menu.active {
    margin-top: 0.5rem;
  }

  .hero {
    padding-bottom: 3.5rem;
  }

  .scroll-indicator {
    display: none;
  }

  .hero-visual {
    margin-top: 0.5rem;
  }

  .contact-cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-cta-row .btn {
    width: 100%;
  }

  .booking-panel__embed {
    max-height: min(70vh, 380px);
  }

  .cal-inline-mount {
    min-height: 300px;
    max-height: min(70vh, 380px);
  }
}

/* Phones */
@media (max-width: 560px) {
  .brand-tagline {
    display: none;
  }

  .brand-mark-img {
    width: 2.5rem;
    height: 2.5rem;
  }

  .nav-meta {
    gap: 0.35rem;
  }

  .nav-status-pill--cta {
    padding: 0.55rem 0.75rem;
    font-size: 0.72rem;
  }

  .hero {
    padding-top: 1.5rem;
  }

  .hero-subtitle,
  .hero-description {
    font-size: 0.98rem;
  }

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

  .contact-card {
    text-align: center;
  }

  .contact-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .section-description {
    font-size: 0.95rem;
  }

  .project-card {
    padding: 1.05rem;
  }

  .code-card pre {
    font-size: 0.82rem;
    padding: 0.85rem;
  }

  .footer-inner {
    gap: 1.25rem;
  }

  .footer-links {
    width: 100%;
    justify-content: flex-start;
  }
}

/* Very narrow phones */
@media (max-width: 380px) {
  :root {
    --container-padding: 0.85rem;
  }

  .contact-icons {
    gap: 0.5rem;
  }

  .contact-icon {
    width: 2.85rem;
    height: 2.85rem;
  }
}

/* Landscape phones */
@media (max-height: 520px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding-top: 1rem;
    padding-bottom: 1.5rem;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scroll-indicator {
    display: none;
  }
}

/* OS high contrast preference */
@media (prefers-contrast: more) {
  :root {
    --border: rgba(16, 32, 54, 0.28);
    --border-strong: rgba(16, 32, 54, 0.42);
  }

  [data-theme="dark"] {
    --border: rgba(148, 163, 184, 0.35);
    --border-strong: rgba(148, 163, 184, 0.5);
  }

  .btn,
  .contact-icon,
  .project-card,
  .nav-link {
    border-width: 2px;
  }
}

/* Prevent layout blowout from long URLs/strings */
.project-description,
.contact-lead,
.hero-description {
  overflow-wrap: anywhere;
  word-break: break-word;
}