/* ===========================================================================
   p(Doom)1 — bureaucratic stamp motif
   ---------------------------------------------------------------------------
   A diagonal rubber-stamp impression, of the kind a clerk slams on a form.
   Register: mid-2000s office paperwork, not a Web 1.0 "under construction" GIF.

   WHY THIS FILE IS NOT IN site.css
   --------------------------------
   site.css loads on ~2,225 pages and has whited-out the site once already by
   carrying a light-palette literal (see CLAUDE.md, "Cascade gotcha"). This
   stylesheet is OPT-IN: a page adopts it with one <link>, and pages that do not
   link it are untouched. Every class here is namespaced `.stamp*`, so it cannot
   collide with a page's inline <style>.

   PALETTE
   -------
   Colours come from `--stamp-ink`, which defaults to the amber-terminal accent
   but reads a page token first, so a page that defines --accent-primary /
   --amber gets its own ink for free:
       --stamp-ink: var(--amber, var(--accent-primary, #f6a800));

   HONESTY CONTRACT
   ----------------
   A stamp is a LABEL, not a censor bar. It must never sit on top of content a
   reader needs. The default `.stamp` is in normal flow. `.stamp--overlay` is
   available for panels that are *themselves* empty/pending, is
   pointer-events:none, and requires the panel to reserve padding for it.

   Stamp text is REAL TEXT, not a pseudo-element `content:`, because it carries
   meaning about how far to trust the data underneath. Write the words in
   sentence case in the HTML and let `text-transform:uppercase` do the shouting —
   several screen readers spell out ALL-CAPS source text letter by letter.

   MOTION
   ------
   Nothing here moves. A stamp is a static impression. The reduced-motion block
   at the bottom exists only to neutralise transitions a host page might inherit
   onto the element.

   HOW IT IS BUILT (the recipe, in four cheap layers)
   --------------------------------------------------
   1. rotate()          — the slam angle. ~-7deg reads deliberate, not broken.
   2. ::before          — a 1px-offset duplicate of the border box at low alpha:
                          the second, misregistered impression of a tired stamp.
   3. text-shadow       — the same trick on the letterforms.
   4. ::after           — angled repeating-linear-gradient in the PAGE background
                          colour, ~18% alpha, with uneven stop widths. Reads as
                          streaky voids where the ink did not take.
                          Deliberately an OVERLAY, not a mask: worst case it
                          renders as nothing. A mask that fails renders the whole
                          stamp invisible, which is the one failure mode we
                          cannot accept for a trust label.

   Full recipe + adoption snippet: docs/UNDER_CONSTRUCTION_STAMP.md
   =========================================================================== */

.stamp,
.stamp-block,
.stamp-docket {
	--stamp-ink: var(--amber, var(--accent-primary, #f6a800));
	--stamp-void: var(--bg, var(--bg-primary, #12100f));
	--stamp-rotate: -7deg;
}

/* --- the impression ------------------------------------------------------ */

.stamp {
	position: relative;
	display: inline-block;
	max-width: 100%;
	padding: 0.42em 0.85em;
	border: 2px solid var(--stamp-ink);
	border-radius: 3px;
	box-shadow: inset 0 0 0 1px var(--stamp-ink);

	color: var(--stamp-ink);
	font-family: ui-monospace, "SFMono-Regular", Menlo, "Courier New", monospace;
	font-size: 0.78rem;
	font-weight: 800;
	font-stretch: condensed; /* progressive enhancement; ignored if unavailable */
	letter-spacing: 0.18em;
	line-height: 1.15;
	text-transform: uppercase;
	text-align: center;
	white-space: nowrap;

	opacity: 0.9;
	transform: rotate(var(--stamp-rotate));
	transform-origin: 50% 50%;
	/* rotation makes the box sweep past its layout footprint; buy it room so it
	   never clips against a neighbouring element */
	margin: 0.55em 0.75em;
	vertical-align: middle;
}

/* the misregistered second impression */
.stamp::before {
	content: "";
	position: absolute;
	inset: -3px -2px 1px -4px;
	border: 2px solid var(--stamp-ink);
	border-radius: 3px;
	opacity: 0.28;
	pointer-events: none;
}

/* streaky voids where the ink did not take */
.stamp::after {
	content: "";
	position: absolute;
	inset: -2px;
	pointer-events: none;
	background: repeating-linear-gradient(
		112deg,
		var(--stamp-void) 0 1px,
		transparent 1px 6px,
		var(--stamp-void) 6px 7px,
		transparent 7px 19px,
		var(--stamp-void) 19px 21px,
		transparent 21px 34px
	);
	opacity: 0.18;
}

.stamp > .stamp-text {
	/* keeps the letters above the void overlay */
	position: relative;
	z-index: 1;
	text-shadow: 0.5px 0.5px 0 currentColor;
	opacity: 0.94;
}

/* --- ink variants: pick the one that is TRUE of the block ---------------- */

.stamp--awaiting    { --stamp-ink: var(--amber, var(--accent-primary, #f6a800)); --stamp-rotate: -6deg; }
.stamp--provisional { --stamp-ink: var(--amber, var(--accent-primary, #f6a800)); --stamp-rotate: -9deg; }
.stamp--review      { --stamp-ink: var(--teal, var(--accent-secondary, #2fd4c2)); --stamp-rotate: -5deg; }
.stamp--restricted  { --stamp-ink: var(--doom, var(--accent-danger, #e2524a)); --stamp-rotate: -11deg; }
.stamp--incomplete  { --stamp-ink: var(--ink-3, var(--text-muted, #a79e92)); --stamp-rotate: -8deg; }

/* --- sizes --------------------------------------------------------------- */

.stamp--sm { font-size: 0.62rem; letter-spacing: 0.14em; padding: 0.3em 0.6em; border-width: 1px; }
.stamp--lg { font-size: 1.02rem; letter-spacing: 0.2em; padding: 0.5em 1em; }

/* --- placement ----------------------------------------------------------- */

/* Corner impression. ONLY for panels whose content is itself pending — it must
   never land on prose a reader needs. The panel must be position:relative and
   must reserve padding-top for the stamp. */
.stamp--overlay {
	position: absolute;
	top: 0.6rem;
	right: 0.9rem;
	margin: 0;
	pointer-events: none;
	z-index: 2;
}

/* --- the panel a stamp labels -------------------------------------------- */

.stamp-block {
	position: relative;
	border: 1px dashed var(--stamp-ink);
	border-radius: 10px;
	background: var(--panel, var(--bg-secondary, #1c1917));
	padding: 1.2rem 1.3rem 1.1rem;
	margin: 1.4rem 0;
}

.stamp-block > .stamp-body {
	color: var(--ink-2, var(--text-secondary, #cfc7bb));
	font-size: 0.92rem;
	text-wrap: pretty;
}

.stamp-block > .stamp-body > * + * { margin-top: 0.7rem; }

/* The docket line. Mid-2000s paperwork does not just stamp a form, it gives the
   form a number. Every reference printed here must be a real one — a made-up
   docket is exactly the sort of authoritative-sounding lie this page exists to
   avoid. */
.stamp-docket {
	margin-top: 0.9rem;
	padding-top: 0.7rem;
	border-top: 1px solid var(--hair, var(--border-color, #3a342e));
	color: var(--ink-3, var(--text-muted, #a79e92));
	font-family: ui-monospace, "SFMono-Regular", Menlo, "Courier New", monospace;
	font-size: 0.68rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	word-break: break-word;
}

.stamp-docket a { color: var(--stamp-ink); text-decoration: none; }
.stamp-docket a:hover { text-decoration: underline; }

/* --- screen-reader-only prefix ------------------------------------------- */

/* The stamp's meaning depends on knowing it IS a stamp. Sighted readers get
   that from the border and the angle; everyone else gets this. */
.stamp-sr {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0 0 0 0);
	clip-path: inset(50%);
	white-space: nowrap;
	border: 0;
}

/* --- small screens ------------------------------------------------------- */

@media (max-width: 480px) {
	.stamp { font-size: 0.66rem; letter-spacing: 0.13em; white-space: normal; }
	.stamp--lg { font-size: 0.82rem; }
	.stamp--overlay { position: static; display: inline-block; margin: 0 0 0.6rem; }
}

/* --- a stamp is a static impression -------------------------------------- */

@media (prefers-reduced-motion: reduce) {
	.stamp,
	.stamp::before,
	.stamp::after,
	.stamp-block {
		transition: none !important;
		animation: none !important;
	}
}

/* --- high contrast / forced colours -------------------------------------- */

@media (forced-colors: active) {
	.stamp { border-color: CanvasText; color: CanvasText; opacity: 1; }
	.stamp::after { display: none; }
}