@layer reset, base, theme, components, utilities;

/* Register custom property for scroll-driven drawer backdrop interpolation */
@supports (animation-timeline: scroll()) {
  @property --drawer-backdrop {
    syntax: '<number>';
    inherits: true;
    initial-value: 0;
  }
}

@layer reset {
  :where(
    html, body, div, span, header, nav, main, section, article, aside, footer,
    figure, figcaption, h1, h2, h3, h4, p, ul, ol, li, a, button, dialog,
    form, label, select, img, svg, iframe
  ) {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  :where(img, svg, video, canvas) {
    display: block;
    max-inline-size: 100%;
  }

  :where(ul, ol) {
    list-style: none;
  }

  :where(button, select) {
    font: inherit;
    color: inherit;
    background: transparent;
    border: 0;
  }

  :where(button) {
    cursor: pointer;
  }
}

@layer theme {
  :root {
    color-scheme: light;

    /* Typography — Exact Squarespace York/Jasper font family */
    --font-sans: 'Chivo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Color Palette — Original Squarespace Light Theme */
    --color-bg: #ffffff;
    --color-surface: #f7f7f7;
    --color-surface-elevated: #ffffff;
    --color-title: #222222;
    --color-text: #333333;
    --color-text-muted: #666666;
    --color-nav-muted: #aaaaaa;
    --color-nav-active: #333333;
    --color-index-nav-muted: #e3e3e3;
    --color-index-nav-active: #000000;
    --color-border: #ebebeb;
    --color-accent-link: #222222;

    /* Layout & Spacing — Derived from site-outer-padding-medium & site-spacing-small */
    --site-max-width: 93.75rem; /* 1500px */
    --site-outer-padding: 5vw;
    --site-spacing-block: 3vw;
    --grid-gap: 1.5625rem; /* 25px (12.5px * 2) */
    --grid-cols: 2;
    --card-height: 50dvh;

    /* Motion */
    --ease-sqsp: cubic-bezier(0.33, 0, 0.2, 1);
    --duration-hover: 300ms;
    --duration-bg: 140ms;
  }

  :root[data-theme="dark"] {
    color-scheme: dark;
    --color-bg: #0f0f11;
    --color-surface: #18181c;
    --color-surface-elevated: #1f1f24;
    --color-title: #f5f5f7;
    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-nav-muted: #71717a;
    --color-nav-active: #ffffff;
    --color-index-nav-muted: #3f3f46;
    --color-index-nav-active: #ffffff;
    --color-border: #27272a;
    --color-accent-link: #ffffff;
  }
}

@layer base {
  html {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    letter-spacing: 0.02em;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    scrollbar-gutter: stable;
  }

  body {
    min-block-size: 100dvh;
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-x: clip;
    transition: background-color 250ms var(--ease-sqsp), color 250ms var(--ease-sqsp);
  }

  :where(h1, h2, h3) {
    text-wrap: balance;
    color: var(--color-text);
  }

  :where(p, li) {
    text-wrap: pretty;
    overflow-wrap: break-word;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  :focus-visible {
    outline: 2px solid var(--color-title);
    outline-offset: 4px;
  }

  [inert] {
    opacity: 0.5;
    cursor: default;
    user-select: none;
  }
}

@layer components {
  /* ==========================================================================
     Site Header (ancillary-header-branding-position-left / primary-nav-right)
     ========================================================================== */
  .site-header {
    max-inline-size: var(--site-max-width);
    margin-block: var(--site-spacing-block);
    margin-inline: auto;
    padding-inline: var(--site-outer-padding);
    display: flex;
    align-items: safe center;
    justify-content: space-between;
    gap: 2rem;
  }

  .site-title {
    font-size: 1.5rem; /* 24px */
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: 0;
    color: var(--color-title);
  }

  .site-title a {
    color: inherit;
    transition: opacity 200ms var(--ease-sqsp);
  }

  .site-title a:hover {
    opacity: 0.75;
  }

  .primary-nav-wrapper {
    margin-inline-start: auto;
  }

  .site-navigation {
    display: flex;
    flex-wrap: wrap;
    flex-wrap: balance;
    align-items: safe center;
    gap: 1.85rem;
    font-size: 0.875rem; /* 14px */
    font-weight: 400;
    letter-spacing: 0.02em;
    line-height: 1;
  }

  .nav-link {
    color: var(--color-nav-muted);
    padding-block: 0.35rem;
    position: relative;
    transition: color 200ms var(--ease-sqsp);
  }

  .nav-link:where(:hover, :focus-visible, [aria-current="page"]) {
    color: var(--color-nav-active);
  }

  .mobile-menu-trigger {
    display: none;
    align-items: safe center;
    justify-content: center;
    inline-size: 2.5rem;
    block-size: 2.5rem;
    color: var(--color-title);
  }

  @media (max-width: 48rem) {
    .site-header {
      margin-block: 1.25rem;
    }

    .primary-nav-wrapper {
      display: none;
    }

    .mobile-menu-trigger {
      display: inline-flex;
    }
  }

  /* ==========================================================================
     Mobile Navigation Drawer (Popover + Scroll Snap + Scroll-Driven Backdrop)
     ========================================================================== */
  .Drawer {
    --drawer-width: min(20em, 80dvw);
    --drawer-backdrop: 0;
    inline-size: auto;
    block-size: auto;
    background: transparent;
    border: 0;
    overflow: visible;
    inset: 0;
  }

  .Drawer::backdrop {
    background: #000000;
    opacity: calc(var(--drawer-backdrop) / 2);
  }

  .Drawer-scroller {
    position: relative;
    display: grid;
    grid-template-columns: var(--drawer-width) 100%;
    overflow-x: scroll;
    overscroll-behavior: none;
    scrollbar-width: none;
    scroll-snap-type: x mandatory;
  }

  @media (prefers-reduced-motion: no-preference) {
    .Drawer-scroller {
      scroll-behavior: smooth;
    }
  }

  .Drawer-scroller::after {
    content: '';
    scroll-snap-align: end;
    scroll-initial-target: nearest;
  }

  .Drawer-sheet {
    display: grid;
    grid-template-rows: auto 1fr auto;
    block-size: 100svh;
    background: var(--color-surface-elevated);
    color: var(--color-text);
    padding-block: 2rem;
    padding-inline: 1.75rem;
    overflow-y: auto;
    scroll-snap-align: start;
    scrollbar-width: none;
    border-inline-end: 1px solid var(--color-border);
  }

  .Drawer-header {
    display: flex;
    align-items: safe center;
    justify-content: space-between;
    padding-block-end: 2rem;
    border-block-end: 1px solid var(--color-border);
  }

  .Drawer-title {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-title);
  }

  .Drawer-close {
    inline-size: 2.25rem;
    block-size: 2.25rem;
    display: inline-flex;
    align-items: safe center;
    justify-content: center;
    color: var(--color-text-muted);
  }

  .Drawer-nav {
    margin-block-start: 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .Drawer-link {
    font-size: 1.25rem;
    color: var(--color-nav-muted);
    transition: color 200ms var(--ease-sqsp);
  }

  .Drawer-link:where(:hover, :focus-visible, [aria-current="page"]) {
    color: var(--color-nav-active);
  }

  .Drawer-footer {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  @supports (animation-timeline: scroll()) {
    .Drawer {
      timeline-scope: --drawer-fade;
      animation: fade-drawer-backdrop linear both;
      animation-timeline: --drawer-fade;
    }

    .Drawer-scroller {
      scroll-timeline: --drawer-fade x;
    }

    @keyframes fade-drawer-backdrop {
      0% { --drawer-backdrop: 1; }
      100% { --drawer-backdrop: 0; }
    }
  }

  /* ==========================================================================
     Main Page Shell
     ========================================================================== */
  .site-page {
    max-inline-size: var(--site-max-width);
    margin-block: var(--site-spacing-block) 5vw;
    margin-inline: auto;
    padding-inline: var(--site-outer-padding);
  }

  .sr-only {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    padding: 0;
    margin: -1px;
    overflow: clip;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }

  /* ==========================================================================
     Index Portfolio Grid (index-item-width-half / index-item-height-medium)
     ========================================================================== */
  .index-list {
    display: grid;
    grid-template-columns: repeat(var(--grid-cols, 2), minmax(0, 1fr));
    gap: var(--grid-gap);
  }

  @media (max-width: 48rem) {
    .index-list {
      grid-template-columns: 1fr;
    }
  }

  .index-section {
    container: index-card / inline-size;
  }

  .index-item {
    position: relative;
    block-size: var(--card-height);
    min-block-size: 18rem;
    max-block-size: 42rem;
    background-color: var(--item-bg, #1a1a1a);
    overflow: clip;
    transition: background-color var(--duration-bg) var(--ease-sqsp);
  }

  .index-item-link {
    display: block;
    inline-size: 100%;
    block-size: 100%;
    position: relative;
  }

  .index-item-image-wrapper {
    inline-size: 100%;
    block-size: 100%;
    opacity: 1;
    transition:
      opacity var(--duration-hover) var(--ease-sqsp),
      scale 450ms var(--ease-sqsp);
  }

  .index-item-image {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    object-position: center;
  }

  /* Hover & Focus Reveal Overlay (.index-item-text-wrapper) */
  .index-item-text-wrapper {
    position: absolute;
    inset: 4vw;
    display: flex;
    flex-direction: column;
    align-items: safe center;
    justify-content: safe center;
    text-align: center;
    pointer-events: none;
    opacity: 0;
    translate: 0 0.35rem;
    transition:
      opacity var(--duration-hover) var(--ease-sqsp),
      translate var(--duration-hover) var(--ease-sqsp);
  }

  /* Adaptive contrast on hover based on card background luminance */
  .index-item[data-text-theme="light"] .index-item-text-wrapper {
    --card-title-color: #ffffff;
    --card-cat-color: rgba(255, 255, 255, 0.78);
  }

  .index-item[data-text-theme="dark"] .index-item-text-wrapper {
    --card-title-color: #222222;
    --card-cat-color: #4a4a4a;
  }

  .index-item-title {
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    font-size: clamp(1.5625rem, 6.2cqi, 3.4375rem); /* 25px to 55px */
    line-height: 1.25;
    max-inline-size: 80%;
    color: var(--card-title-color, #333333);
  }

  .index-item-category-wrapper {
    margin-block-start: 0.45rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem; /* 12px */
    line-height: 1.5;
    color: var(--card-cat-color, #666666);
  }

  /* Squarespace hover state: image fades to 0.15 over dominant color, title fades to 1 */
  .index-item:where(:hover, :focus-within) .index-item-image-wrapper {
    opacity: 0.15;
    @media (prefers-reduced-motion: no-preference) {
      scale: 1.015;
    }
  }

  .index-item:where(:hover, :focus-within) .index-item-text-wrapper {
    opacity: 1;
    translate: 0 0;
  }

  /* Layout Variations via Inspector Toolbar: Always-on or Below-Image titles */
  :root[data-title-mode="always"] .index-item-text-wrapper {
    opacity: 1;
    translate: 0 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0.15));
    inset: 0;
    padding: 2rem;
    --card-title-color: #ffffff;
    --card-cat-color: rgba(255, 255, 255, 0.85);
  }

  :root[data-title-mode="below"] .index-item {
    block-size: auto;
    max-block-size: none;
    background-color: transparent;
  }

  :root[data-title-mode="below"] .index-item-image-wrapper {
    block-size: var(--card-height);
    opacity: 1 !important;
  }

  :root[data-title-mode="below"] .index-item-text-wrapper {
    position: static;
    opacity: 1;
    translate: 0 0;
    align-items: flex-start;
    text-align: start;
    padding-block-start: 0.875rem;
    --card-title-color: var(--color-title);
    --card-cat-color: var(--color-text-muted);
  }

  :root[data-title-mode="below"] .index-item-title {
    font-size: clamp(1.25rem, 3.5cqi, 1.75rem);
    max-inline-size: 100%;
  }

  /* ==========================================================================
     Top Showcase Hero Slide (Film Layout: .project-container / .project-slide)
     ========================================================================== */
  .project-container {
    max-inline-size: 64rem;
    margin-inline: auto;
    margin-block-end: 2.5rem;
  }

  .project-slide {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  .project-slide-description-wrapper {
    text-align: center;
    padding-block-start: 0.25rem;
  }

  .project-slide-description-title {
    font-size: 0.75rem; /* 12px */
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    line-height: 1.6;
    color: var(--color-title);
  }

  /* ==========================================================================
     Project Detail View (Squarespace 3-col spacer + 6-col editorial + 3-col)
     ========================================================================== */
  .project-detail {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.5rem;
    margin-block-start: 1.5vw;
  }

  .project-editorial-column {
    grid-column: 4 / 10;
    display: flex;
    flex-direction: column;
    gap: 1.85rem;
  }

  @media (max-width: 64rem) {
    .project-editorial-column {
      grid-column: 2 / 12;
    }
  }

  @media (max-width: 48rem) {
    .project-editorial-column {
      grid-column: 1 / -1;
    }
  }

  /* ==========================================================================
     Reusable Content Blocks (Block.header, Block.prose, Block.section, etc.)
     ========================================================================== */
  .project-header {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
  }

  .project-title {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: -0.03em;
    font-size: clamp(2.25rem, 1.5rem + 1.8vw, 3.125rem); /* 36px to 50px */
    line-height: 1.3;
    color: var(--color-title);
    inline-size: fit-content;
  }

  .project-subtitle {
    font-weight: 400;
    letter-spacing: -0.02em;
    font-size: clamp(1.375rem, 1.15rem + 0.9vw, 2rem);
    line-height: 1.35;
    color: var(--color-title);
  }

  .ui-prose-block {
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
    font-size: 1rem; /* 16px */
    line-height: 1.8;
    letter-spacing: 0.02em;
    max-inline-size: 72ch;
  }

  :where(.ui-prose-block, .ui-list-block, .ui-citation-block) a {
    text-decoration: underline;
    text-underline-offset: 0.22em;
    text-decoration-thickness: 1px;
    transition: opacity 180ms var(--ease-sqsp);
  }

  :where(.ui-prose-block, .ui-list-block, .ui-citation-block) a:hover {
    opacity: 0.65;
  }

  .ui-section-block {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-block-start: 0.5rem;
  }

  .ui-heading-h2 {
    font-weight: 400;
    letter-spacing: -0.02em;
    font-size: clamp(1.5rem, 1.25rem + 0.9vw, 2.25rem); /* ~24px to 36px */
    line-height: 1.3;
    color: var(--color-title);
  }

  .ui-subheading-h3 {
    font-size: 0.75rem; /* 12px */
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    line-height: 1.6;
    color: var(--color-title);
  }

  ul.ui-list-block {
    list-style: disc;
  }

  ol.ui-list-block {
    list-style: decimal;
  }

  .ui-list-block {
    padding-inline-start: 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    max-inline-size: 72ch;
  }

  .ui-list-nested {
    list-style: circle;
    padding-inline-start: 1.75rem;
    margin-block-start: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
  }

  .ui-citation-block {
    margin-inline-start: 2.5rem;
    font-size: 0.9375rem;
    line-height: 1.8;
    max-inline-size: 68ch;
  }

  /* ==========================================================================
     Reusable Video Embed Block (Block.video & Hero Slide Video)
     ========================================================================== */
  .ui-video-figure {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    inline-size: 100%;
  }

  .ui-video-container {
    position: relative;
    inline-size: 100%;
    aspect-ratio: var(--video-aspect, 16 / 9);
    background-color: #000000;
    overflow: clip;
  }

  .ui-video-iframe {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    border: 0;
  }

  .sqs-video-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    inline-size: 100%;
    block-size: 100%;
    display: grid;
    place-items: center;
    overflow: clip;
  }

  .sqs-video-overlay.is-playing {
    display: none;
  }

  .sqs-video-poster-img {
    position: absolute;
    inset: 0;
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
    transition: scale 450ms var(--ease-sqsp);
  }

  .sqs-video-overlay:hover .sqs-video-poster-img {
    @media (prefers-reduced-motion: no-preference) {
      scale: 1.02;
    }
  }

  .sqs-video-opaque {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.2);
    transition: background-color 250ms var(--ease-sqsp);
  }

  .sqs-video-overlay:hover .sqs-video-opaque {
    background: rgba(0, 0, 0, 0.35);
  }

  .sqs-video-icon {
    position: relative;
    z-index: 1;
    inline-size: 4.5rem;
    block-size: 4.5rem;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.65);
    border: 1.5px solid rgba(255, 255, 255, 0.9);
    color: #ffffff;
    display: inline-flex;
    align-items: safe center;
    justify-content: safe center;
    transition: transform 220ms var(--ease-sqsp), background-color 220ms var(--ease-sqsp);
  }

  .sqs-video-overlay:hover .sqs-video-icon {
    background: rgba(0, 0, 0, 0.85);
    @media (prefers-reduced-motion: no-preference) {
      transform: scale(1.08);
    }
  }

  .video-caption {
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--color-text-muted);
  }

  /* ==========================================================================
     Reusable Image Figure Block (Block.image)
     ========================================================================== */
  .ui-image-block {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    inline-size: 100%;
  }

  .ui-image-lightbox-trigger,
  .ui-image-link {
    display: block;
    inline-size: 100%;
    overflow: clip;
  }

  .ui-image-block img {
    inline-size: 100%;
    block-size: auto;
    object-fit: cover;
    transition: scale 350ms var(--ease-sqsp);
  }

  :where(.ui-image-lightbox-trigger, .ui-image-link):hover img {
    @media (prefers-reduced-motion: no-preference) {
      scale: 1.015;
    }
  }

  .image-caption {
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--color-text-muted);
  }

  /* ==========================================================================
     Stacked Interactive Story Gallery (Block.interactiveGallery — Remembrance)
     ========================================================================== */
  .sqs-gallery-stacked {
    display: flex;
    flex-direction: column;
    gap: 2.75rem;
    margin-block: 0.5rem;
  }

  .sqs-gallery-item {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
  }

  .sqs-gallery-image-link {
    display: block;
    overflow: clip;
  }

  .sqs-gallery-image-link img {
    inline-size: 100%;
    block-size: auto;
    transition: opacity 250ms var(--ease-sqsp), scale 400ms var(--ease-sqsp);
  }

  .sqs-gallery-image-link:hover img {
    opacity: 0.9;
    @media (prefers-reduced-motion: no-preference) {
      scale: 1.015;
    }
  }

  .meta-inside {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
  }

  .meta-title {
    font-size: 0.75rem; /* 12px */
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    line-height: 1.6;
    color: var(--color-title);
  }

  .meta-title a {
    transition: opacity 180ms var(--ease-sqsp);
  }

  .meta-title a:hover {
    opacity: 0.65;
  }

  .meta-description {
    font-size: 0.9375rem;
    line-height: 1.75;
    color: var(--color-text);
  }

  .protected-notice {
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  /* ==========================================================================
     Bottom Index Navigation (.index-navigation & .index-next)
     Exact Squarespace York/Jasper signature bottom project switcher
     ========================================================================== */
  .index-item-navigation {
    margin-block: 7vw 3vw;
    text-align: center;
  }

  .index-next {
    margin-block-end: 2.5rem;
    font-size: clamp(1.125rem, 0.9rem + 0.8vw, 1.6875rem);
    letter-spacing: -0.015em;
  }

  .index-next-link {
    display: inline-flex;
    align-items: safe center;
    gap: 0.45rem;
    color: var(--color-text-muted);
    transition: color 200ms var(--ease-sqsp);
  }

  .index-next-link:hover {
    color: var(--color-index-nav-active);
  }

  .index-next-title {
    font-weight: 700;
    color: var(--color-title);
  }

  .index-navigation {
    display: flex;
    flex-wrap: wrap;
    flex-wrap: balance;
    justify-content: safe center;
    gap: 0.35rem 0.85rem;
    font-size: clamp(1.125rem, 0.9rem + 0.8vw, 1.6875rem); /* 18px to 27px */
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.35;
    color: var(--color-index-nav-muted);
  }

  .index-nav-link {
    padding: 0.2em 0.3em;
    color: inherit;
    transition: color 180ms var(--ease-sqsp);
  }

  .index-nav-link:where(:hover, :focus-visible, .active-link) {
    color: var(--color-index-nav-active);
  }

  /* ==========================================================================
     Native Lightbox Dialog (<dialog closedby="any">)
     ========================================================================== */
  .lightbox-dialog {
    margin: auto;
    max-inline-size: min(72rem, 92dvw);
    max-block-size: 88dvh;
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    padding: 1.25rem;
  }

  .lightbox-dialog::backdrop {
    background: rgba(0, 0, 0, 0.82);
    backdrop-filter: blur(4px);
  }

  .lightbox-content {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
  }

  .lightbox-header {
    display: flex;
    align-items: safe center;
    justify-content: space-between;
    gap: 1rem;
  }

  .lightbox-title {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
  }

  .lightbox-close-btn {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    padding-block: 0.35rem;
    padding-inline: 0.75rem;
    border: 1px solid var(--color-border);
  }

  .lightbox-image {
    max-block-size: 72dvh;
    inline-size: 100%;
    object-fit: contain;
  }

  .gallery-figure {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .gallery-caption {
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--color-text-muted);
  }

  /* ==========================================================================
     Interactive Layout Tweaks Bar
     ========================================================================== */
  .prototype-toolbar {
    position: fixed;
    inset-block-end: 1.25rem;
    inset-inline-end: 1.25rem;
    z-index: 900;
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    font-size: 0.75rem;
    max-inline-size: min(23rem, calc(100dvw - 2.5rem));
  }

  .prototype-toolbar summary {
    padding-block: 0.65rem;
    padding-inline: 1rem;
    cursor: pointer;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: flex;
    align-items: safe center;
    justify-content: space-between;
    gap: 0.75rem;
    user-select: none;
  }

  .prototype-toolbar-body {
    padding: 0.85rem 1rem 1rem;
    border-block-start: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .tweak-row {
    display: flex;
    align-items: safe center;
    justify-content: space-between;
    gap: 0.75rem;
  }

  .tweak-label {
    color: var(--color-text-muted);
  }

  .tweak-select {
    padding-block: 0.25rem;
    padding-inline: 0.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 0.75rem;
  }

  /* ==========================================================================
     View Transitions API (Same-Document Transitions)
     ========================================================================== */
  .index-item.is-transitioning,
  .ui-video-container.is-transitioning,
  .ui-image-block.is-transitioning {
    view-transition-name: project-media;
  }

  ::view-transition-old(project-media),
  ::view-transition-new(project-media) {
    block-size: 100%;
    object-fit: cover;
  }

  @media (prefers-reduced-motion: reduce) {
    ::view-transition-group(*),
    ::view-transition-old(*),
    ::view-transition-new(*) {
      animation: none !important;
    }
  }
}