/* ==========================================================================
   motion.css
   Light, GPU-friendly motion: page load rise, scroll reveal, hover polish,
   cross-page fades and a soft theme crossfade.
   Everything here is opt-in via prefers-reduced-motion: no-preference, and
   reveal styles only apply once motion.js has added the .reveal class.
   ========================================================================== */

:root {
  --ease-out: cubic-bezier(0.22, 0.7, 0.2, 1);
}

/* Smooth wheel scrolling (Lenis) ---------------------------------------- */

html.lenis,
html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-stopped {
  overflow: clip;
}

.lenis.lenis-smooth iframe {
  pointer-events: none;
}

/* Header ---------------------------------------------------------------- */

.header-row {
  transition: box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled .header-row {
  box-shadow: 0 10px 30px rgba(22, 20, 15, 0.1);
}

:root[data-theme='dark'] .site-header.is-scrolled .header-row {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

@media (prefers-reduced-motion: no-preference) {
  /* Page load ------------------------------------------------------------ */

  @keyframes rise {
    from {
      opacity: 0;
      transform: translateY(18px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  @keyframes settle {
    from {
      opacity: 0;
      transform: scale(0.97);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  .hero-copy > *,
  .page-header .container > * {
    animation: rise 0.8s var(--ease-out) both;
  }

  .hero-copy > :nth-child(2),
  .page-header .container > :nth-child(2) {
    animation-delay: 0.08s;
  }

  .hero-copy > :nth-child(3),
  .page-header .container > :nth-child(3) {
    animation-delay: 0.16s;
  }

  .hero-copy > :nth-child(4),
  .page-header .container > :nth-child(4) {
    animation-delay: 0.24s;
  }

  .hero-copy > :nth-child(n + 5),
  .page-header .container > :nth-child(n + 4) {
    animation-delay: 0.32s;
  }

  .portrait {
    animation: settle 0.9s var(--ease-out) 0.15s both;
  }

  /* Scroll reveal -------------------------------------------------------- */

  .js .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
    transition-delay: calc(var(--reveal-i, 0) * 70ms);
  }

  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  /* Hover polish --------------------------------------------------------- */

  .btn {
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease,
      transform 0.2s var(--ease-out), box-shadow 0.2s ease;
  }

  .link-card,
  .win-card,
  .event-card,
  .project-card,
  .badge-card {
    transition: transform 0.3s var(--ease-out), box-shadow 0.3s ease, border-color 0.2s ease;
  }

  .win-card img,
  .event-card img {
    transition: transform 0.7s var(--ease-out);
  }

  .badge-grid li {
    transition: transform 0.25s var(--ease-out);
  }

  /* Cross-page fade (multi-page View Transitions) ------------------------ */

  @view-transition {
    navigation: auto;
  }

  .site-header {
    view-transition-name: site-header;
  }

  @keyframes page-out {
    to {
      opacity: 0;
    }
  }

  @keyframes page-in {
    from {
      opacity: 0;
    }
  }

  ::view-transition-old(root) {
    animation: 0.15s ease-in both page-out;
  }

  ::view-transition-new(root) {
    animation: 0.3s ease-out 0.05s both page-in;
  }

  /* Theme crossfade, added briefly by motion.js while toggling ----------- */

  .theme-switching *,
  .theme-switching *::before,
  .theme-switching *::after {
    transition: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease,
      fill 0.35s ease, box-shadow 0.35s ease !important;
  }
}

@media (prefers-reduced-motion: no-preference) and (hover: hover) {
  .btn:hover {
    transform: translateY(-1px);
  }

  .btn:active {
    transform: translateY(0);
  }

  .btn-primary:hover {
    box-shadow: 0 6px 16px rgba(122, 31, 61, 0.25);
  }

  .link-card:hover,
  .win-card:hover,
  .event-card:hover,
  .project-card:hover,
  .badge-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
  }

  .win-card:hover img,
  .event-card:hover img {
    transform: scale(1.035);
  }

  .badge-grid li:hover {
    transform: translateY(-3px) scale(1.04);
  }
}

/* Linked item highlight --------------------------------------------------
   When a link from the home page lands on a specific event, win, badge or
   project, outline it so it is easy to spot. The outline stays for readers who
   prefer reduced motion and fades out for everyone else. */

:is(.event-card, .badge-card, .feature, .project-full):target {
  outline: 2px solid var(--accent);
  outline-offset: 6px;
  border-radius: var(--radius);
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes target-flash {
    0%,
    55% {
      outline-color: var(--accent);
    }
    100% {
      outline-color: transparent;
    }
  }

  :is(.event-card, .badge-card, .feature, .project-full):target {
    animation: target-flash 3.4s ease-out 0.4s both;
  }
}