/*!
 * scrollcraft.css — the device layer of scroll-craft's stylesheet.
 *
 * Copyright (c) 2026 Nate Herk
 * Released under the MIT License. Full text: https://github.com/nateherkai/scroll-craft/blob/main/LICENSE
 * Source: https://github.com/nateherkai/scroll-craft (commit 677619e), copied verbatim.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
/* scrollcraft.devices.css: the DEVICE layer of scrollcraft.css only, for dropping the
   engine into a site that already owns its own reset, type and colour system.
   Generated from vendor/scrollcraft/scrollcraft.css (nateherkai/scroll-craft, MIT,
   commit 677619e): the tokens the device rules reference, then lines 174-432 verbatim
   (DEVICES, WORLDFLIGHT, atmosphere, reduced motion, mobile). Nothing here styles
   body, headings, paragraphs, selection or scrollbars; the host page keeps those.
   Override the tokens below to the host's own values (see references/translate.md). */
:root {
  --sc-accent:      #d8ff3e;   /* ONE accent. It owns a region, not confetti. */
  --sc-canvas:      #08090b;   /* the page ground. Drift interpolates this.   */
  --sc-ease-out:    cubic-bezier(0.23, 1, 0.32, 1);
  --sc-gutter:  clamp(1.25rem, 5vw, 5.5rem);
  --sc-z-stage: 1; --sc-z-copy: 20; --sc-z-chrome: 60;
  --sc-d-slow: 420ms;
  --sc-mx: 50%;   /* written by the engine's spotlight device at runtime */
  --sc-my: 50%;   /* written by the engine's spotlight device at runtime */
}

/* =============================================================== DEVICES ==
   Driven by the engine. Restyle your own markup, not these.                */

.sc-act--pinned { position: relative; }
.sc-stage {
  position: sticky; top: 0;
  height: 100vh; height: 100svh;
  overflow: clip;
  z-index: var(--sc-z-stage);
}

/* scrub / sequence media */
.sc-stage :is(video[data-sc-scrub], canvas[data-sc-sequence], .sc-stage__poster) {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
video[data-sc-scrub] { opacity: 0; transition: opacity 380ms var(--sc-ease-out); }
.sc-has-clip video[data-sc-scrub] { opacity: 1; }
/* The poster is a live frame-holder, not a placeholder: it stays up until a
   real video frame has painted, which is what stops the blank-stage flash. */
.sc-stage__poster { z-index: 0; transition: opacity 380ms var(--sc-ease-out); }
.sc-has-clip .sc-stage__poster { opacity: 0; }

/* A scrim only where text sits. A full-frame darkening layer flattens the
   image everywhere to fix contrast in one corner. */
.sc-scrim {
  position: absolute; inset: 0; pointer-events: none; z-index: 1;
  background: linear-gradient(
    var(--sc-scrim-angle, 180deg),
    color-mix(in oklab, var(--sc-canvas) var(--sc-scrim-a, 78%), transparent) 0%,
    color-mix(in oklab, var(--sc-canvas) 30%, transparent) 42%,
    transparent 68%);
}
/* Point the scrim at the copy. A scrim gradient that darkens the top while the
   copy sits at the bottom fixes contrast nowhere and flattens the image
   everywhere, which is the most common way text-over-video goes wrong. */
.sc-scrim--bottom { --sc-scrim-angle: 0deg; }
.sc-scrim--left   { --sc-scrim-angle: 90deg; }
.sc-scrim--right  { --sc-scrim-angle: 270deg; }

/* Corner scrims, for copy anchored to a corner. An edge gradient has to darken
   a whole band across the frame to cover one corner; a corner gradient puts the
   density where the text is and leaves the rest of the image alone. Pair with
   .sc-copy--lead / .sc-copy--trail. */
.sc-scrim--lead {
  background: linear-gradient(to top right,
    color-mix(in oklab, var(--sc-canvas) 94%, transparent) 0%,
    color-mix(in oklab, var(--sc-canvas) 72%, transparent) 30%,
    color-mix(in oklab, var(--sc-canvas) 30%, transparent) 52%,
    transparent 72%);
}
.sc-scrim--trail {
  background: linear-gradient(to top left,
    color-mix(in oklab, var(--sc-canvas) 94%, transparent) 0%,
    color-mix(in oklab, var(--sc-canvas) 72%, transparent) 30%,
    color-mix(in oklab, var(--sc-canvas) 30%, transparent) 52%,
    transparent 72%);
}
/* A band across the bottom, for copy that spans the full width of the frame.
   That is what both corner anchors become below 860px, and it is also the right
   shape whenever the copy block is wider than a corner. */
.sc-scrim--band {
  background: linear-gradient(to top,
    color-mix(in oklab, var(--sc-canvas) 94%, transparent) 0%,
    color-mix(in oklab, var(--sc-canvas) 74%, transparent) 22%,
    color-mix(in oklab, var(--sc-canvas) 30%, transparent) 42%,
    transparent 58%);
}
.sc-scrim--vignette {
  background: radial-gradient(120% 90% at 50% 45%, transparent 40%,
              color-mix(in oklab, var(--sc-canvas) 70%, transparent) 100%);
}

/* copy over a stage.
   max-width is in rem, never ch. A `ch` on this container resolves against the
   CONTAINER's font-size (body size), not the display size of the heading inside
   it, so `max-width: 20ch` here silently produces a ~180px column and wraps a
   hero headline to six lines. Set a ch measure on the text element itself. */
.sc-copy {
  position: absolute; z-index: var(--sc-z-copy);
  inset-inline: var(--sc-gutter);
  max-width: min(46rem, 76vw);
  will-change: opacity, transform;
}
.sc-copy--lead   { left: var(--sc-gutter); bottom: clamp(3rem, 12vh, 9rem); }
/* inset-inline FIRST. It is the shorthand for left+right, so declaring it after
   `left: 50%` resets left to auto and the block drifts off the left edge. */
.sc-copy--center { inset-inline: auto; left: 50%; top: 50%; translate: -50% -50%; text-align: center; }
.sc-copy--trail  { inset-inline: auto; right: var(--sc-gutter); bottom: clamp(3rem, 12vh, 9rem); text-align: right; }

/* cue defaults: the engine writes opacity/transform inline, these are the
   pre-paint state so nothing flashes before the first read() */
[data-sc-cue] { opacity: 0; will-change: opacity, transform; }
.sc-ready [data-sc-cue] { transition: none; }

/* kinetic split */
.sc-split { display: inline-block; overflow: hidden; vertical-align: top; }
/* Descenders live below the baseline; a line mask clipped to the line box eats
   the tails off g, y, p, j. The padding buys them room back. */
.sc-split--line { display: block; padding-bottom: 0.14em; margin-bottom: -0.14em; }
.sc-split__i { display: inline-block; will-change: transform, opacity; }
.sc-is-split { opacity: 1 !important; }

/* horizontal rail */
[data-sc-pan] { display: flex; will-change: transform; }

/* reveal + parallax */
[data-sc-reveal] { will-change: clip-path; }
[data-sc-parallax] { will-change: transform; }

/* flow reveal (fires once) */
[data-sc-in], [data-sc-stagger] > * {
  opacity: 0;
  transform: translate3d(0, 14px, 0);
  transition: opacity 620ms var(--sc-ease-out), transform 620ms var(--sc-ease-out);
}
[data-sc-in].sc-in, [data-sc-stagger] > .sc-in { opacity: 1; transform: none; }

/* pointer devices */
[data-sc-tilt] { transform-style: preserve-3d; will-change: transform; }
[data-sc-magnet] { will-change: transform; }
/* isolation always; position only if nothing more specific already set it.
   Written with :where() (zero specificity) on purpose: a plain `position:
   relative` here has the same weight as `.sc-stage` and, being later in the
   file, silently wins. A stage carrying both attributes then stops being
   sticky and the whole act scrolls away instead of pinning. */
[data-sc-spotlight] { isolation: isolate; }
:where([data-sc-spotlight]) { position: relative; }
[data-sc-spotlight]::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 2;
  background: radial-gradient(
    28rem 28rem at calc(var(--sc-mx, 0.5) * 100%) calc(var(--sc-my, 0.5) * 100%),
    color-mix(in oklab, var(--sc-accent) 16%, transparent), transparent 70%);
  opacity: 0; transition: opacity var(--sc-d-slow) var(--sc-ease-out);
}
[data-sc-spotlight]:hover::after { opacity: 1; }

/* =========================================================== WORLDFLIGHT ==
   One fixed stage for the whole page. The only thing in document flow is the
   spacer, and it is empty. If you find yourself adding a section here, you want
   act mode instead: the moment a real block scrolls past the fixed stage, the
   page has a seam again and the whole point is gone.                        */

[data-sc-mode="worldflight"] { position: relative; }

.sc-world {
  position: fixed; inset: 0;
  overflow: clip;
  z-index: var(--sc-z-stage);
  background: var(--sc-canvas);
}

/* Every leg is mounted for the life of the page and stacked in the same box.
   The engine owns opacity, visibility and z-index here; do not set them. */
.sc-world__seg {
  position: absolute; inset: 0;
  opacity: 0;
  will-change: opacity;
}
.sc-world__seg > :is(video, img, canvas) {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
/* The poster is the frame-holder AND the first camera move: the engine pushes
   it in slowly until a real decoded frame is available to replace it. */
.sc-world__poster {
  z-index: 0;
  transform-origin: 50% 50%;
  transition: opacity 420ms var(--sc-ease-out);
}
.sc-world__seg > video { z-index: 1; }
.sc-world__seg.sc-has-clip .sc-world__poster { opacity: 0; }
/* The act stylesheet lights a clip through its ancestor act. A worldflight leg
   has no act, so match the class the engine also writes on the clip itself. */
video[data-sc-scrub].sc-has-clip { opacity: 1; }

/* The copy layer is fixed too, and inert by default: the engine hands
   pointer-events back to a block only while it is actually legible. */
.sc-world__copy {
  position: fixed; inset: 0;
  z-index: var(--sc-z-copy);
  pointer-events: none;
}
.sc-world__scrim { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
[data-sc-copy] {
  opacity: 0;
  pointer-events: none;
  will-change: opacity, transform;
}
.sc-ready [data-sc-copy] { transition: none; }

/* The track. Empty on purpose. */
.sc-world__spacer { pointer-events: none; }

/* scroll progress */
[data-sc-progress] {
  position: fixed; inset: 0 0 auto 0; height: 2px; z-index: var(--sc-z-chrome);
  background: var(--sc-accent); transform-origin: 0 50%; transform: scaleX(0);
  will-change: transform;
}

/* ----------------------------------------------------------- atmosphere --
   Depth is not only shadow. Grain keeps a flat dark ground from banding, and
   it is the difference between "a dark page" and "a lit room". */
.sc-grain { position: fixed; inset: 0; pointer-events: none; z-index: 3; opacity: 0.045; }
.sc-grain::before {
  content: ""; position: absolute; inset: -50%;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/></filter><rect width='140' height='140' filter='url(%23n)'/></svg>");
}

/* -------------------------------------------------------- reduced motion -- */
@media (prefers-reduced-motion: reduce) {
  /* Fewer and gentler, not zero. Opacity still carries the reveal so the page
     is comprehensible; every position change is dropped. */
  [data-sc-in], [data-sc-stagger] > * { transform: none; transition-duration: 220ms; }
  [data-sc-parallax], [data-sc-pan], .sc-split__i { transform: none !important; }
  /* A wipe is a position change too. Show reveal content settled. */
  [data-sc-reveal] { clip-path: none !important; }
  /* A rail's transform IS its navigation, not decoration. Zeroing it the way
     parallax and kinetic type are zeroed parks the act on its first screenful
     and makes everything past the fold unreachable: a device degrading into
     missing content. Hand the travel back to the reader as an ordinary scroll
     region instead, so the same items are all still gettable without motion.
     A build that would rather re-lay the rail out as a grid can still do that;
     this is the floor, not the ceiling. */
  [data-sc-act="pan"] .sc-stage,
  [data-sc-act="pan"] [data-sc-stage] {
    overflow-x: auto; overflow-y: hidden;
    overscroll-behavior-x: contain;
    scroll-snap-type: x proximity;
  }
  [data-sc-pan] > * { scroll-snap-align: center; }
  [data-sc-spotlight]::after { display: none; }
  /* A worldflight keeps its whole story here. No clip is ever fetched, so the
     posters are the film, and they cross-dissolve through exactly the same
     seams at exactly the same scroll positions. The push-in and the copy drift
     are the only things that go. */
  .sc-world__poster, [data-sc-copy] { transform: none !important; }
}

/* --------------------------------------------------------------- mobile -- */
@media (max-width: 860px) {
  .sc-copy { inset-inline: var(--sc-gutter); max-width: none; }
  .sc-copy--trail { text-align: left; }
  .sc-stage { height: 100svh; }
  /* .sc-copy--trail re-anchors to the left and spans the full width here, so a
     bottom-RIGHT corner gradient darkens the one corner the copy just left and
     guarantees a contrast failure over any bright clip. Point the density at
     the copy: the same band .sc-scrim--band paints. */
  .sc-scrim--trail {
    background: linear-gradient(to top,
      color-mix(in oklab, var(--sc-canvas) 94%, transparent) 0%,
      color-mix(in oklab, var(--sc-canvas) 74%, transparent) 22%,
      color-mix(in oklab, var(--sc-canvas) 30%, transparent) 42%,
      transparent 58%);
  }
}