/*
 * Planning project page (/project/{token}/), loaded only on those pages by the tc-planning-projects plugin.
 * Builds on theme.css: section 19 there (tc-project-head, tc-chips, tc-titleblock, tc-proposal-card, tc-timeline,
 * tc-like-grid) still styles the shared parts. This file adds the live 3D viewer and the page's own details.
 * Colours, sizes and spacing come from theme.json tokens only (aliases in theme.css section 1).
 *
 * Viewer states (classes on .tc-pp-viewer, set by the plugin's viewer.js):
 *   is-enhanced  JavaScript is running: controls shown      is-loading  model-viewer or a model is downloading
 *   is-live      the 3D model has replaced the poster       is-swapping Existing / Proposed swap in progress
 *   is-failed    error, no WebGL or stall: poster + message  has-interacted the visitor has moved the camera
 *   is-poster-only  the project has a poster but no model
 */

.tc-pp-viewer [hidden] { display: none !important; }

/* ---------- header details ---------- */
.tc-pp-sub {
	display: block;
	margin-top: 0.15rem;
	color: var(--tc-ink-muted);
	font-size: var(--wp--preset--font-size--xs);
	font-weight: 400;
	letter-spacing: 0;
	text-transform: none;
}
.tc-titleblock__row > .tc-pp-sub { grid-column: 2; }
.tc-titleblock__row:has(> .tc-pp-sub) { row-gap: 0; }

/* ---------- viewer ---------- */
.tc-project-viewer .tc-section-head { margin-block-end: var(--wp--preset--spacing--40); }
.tc-pp-viewer { position: relative; }
.tc-pp-viewer > * { margin: 0; }

.tc-pp-viewer__stage {
	position: relative;
	overflow: hidden;
	aspect-ratio: 16 / 10;
	border-radius: var(--tc-radius-md);
	background: var(--tc-stone);
	box-shadow: var(--tc-shadow-lift);
	isolation: isolate;
}
.tc-pp-viewer__poster {
	position: absolute;
	inset: 0;
	z-index: 2;
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	border-radius: 0;
	transition: opacity var(--tc-base) var(--tc-ease), visibility 0s linear var(--tc-base);
}
.tc-pp-viewer__poster--blank { background: var(--tc-stone); }
.tc-pp-viewer.is-live .tc-pp-viewer__poster { opacity: 0; visibility: hidden; pointer-events: none; }

.tc-pp-viewer__model {
	position: absolute;
	inset: 0;
	z-index: 1;
	width: 100%;
	height: 100%;
	background: var(--tc-cream);
	--poster-color: transparent;
	--progress-bar-height: 0px;
	transition: opacity var(--tc-fast) ease;
}
.tc-pp-viewer__model:focus-visible { outline: 2px solid var(--tc-focus); outline-offset: -4px; }
.tc-pp-viewer.is-swapping .tc-pp-viewer__model { opacity: 0.55; }

/* "View in 3D": a quiet scrim and one clear button over the poster. */
.tc-pp-viewer__start {
	position: absolute;
	inset: 0;
	z-index: 3;
	display: grid;
	place-items: center;
	background: linear-gradient(to top, color-mix(in srgb, var(--tc-charcoal) 28%, transparent), transparent 55%);
}
.tc-pp-viewer__load {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	min-height: calc(var(--tc-touch) + 0.25rem);
	padding: 0.7rem 1.5rem;
	background: var(--tc-charcoal);
	border: 1px solid var(--tc-charcoal);
	border-radius: 999px;
	box-shadow: var(--tc-shadow-lift);
	color: var(--tc-cream);
	font-family: var(--wp--preset--font-family--body);
	font-size: var(--wp--preset--font-size--sm);
	font-weight: 600;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	cursor: pointer;
	transition: background-color var(--tc-fast) ease, color var(--tc-fast) ease;
}
.tc-pp-viewer__load:hover { background: var(--tc-white); color: var(--tc-charcoal); }
.tc-pp-viewer__load:focus-visible { outline: 2px solid var(--tc-white); outline-offset: 3px; box-shadow: 0 0 0 5px var(--tc-charcoal); }
.tc-pp-viewer__icon { flex: none; color: var(--tc-brass-light); }
.tc-pp-viewer__load:hover .tc-pp-viewer__icon { color: var(--tc-brass); }

/* Loading: a slim brass bar along the foot of the frame. */
.tc-pp-viewer__progress {
	position: absolute;
	inset: auto 0 0;
	z-index: 4;
	display: grid;
	gap: 0.5rem;
	padding: 1rem 1.25rem 1.1rem;
	background: linear-gradient(to top, color-mix(in srgb, var(--tc-cream) 92%, transparent), transparent);
}
.tc-pp-viewer__progress-label {
	color: var(--tc-charcoal);
	font-size: var(--wp--preset--font-size--xs);
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
}
.tc-pp-viewer__progress-track { display: block; height: 3px; overflow: hidden; border-radius: 3px; background: var(--tc-line); }
.tc-pp-viewer__progress-bar {
	display: block;
	height: 100%;
	background: var(--tc-brass);
	transform: scaleX(0.04);
	transform-origin: left center;
	transition: transform var(--tc-fast) linear;
}

/* Controls: two pill groups under the frame on phones, over it from 782 px. */
.tc-pp-viewer > .tc-pp-viewer__bar {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 0.75rem;
	margin-top: 1rem;
}
.tc-pp-viewer__group {
	display: inline-flex;
	padding: 0.25rem;
	background: var(--tc-white);
	border: 1px solid var(--tc-line);
	border-radius: 999px;
}
.tc-pp-viewer__btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: var(--tc-touch);
	min-height: var(--tc-touch);
	padding: 0 1.1rem;
	background: transparent;
	border: 0;
	border-radius: 999px;
	color: var(--tc-ink-mid);
	font-family: var(--wp--preset--font-family--body);
	font-size: var(--wp--preset--font-size--xs);
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	cursor: pointer;
	transition: background-color var(--tc-fast) ease, color var(--tc-fast) ease;
}
.tc-pp-viewer__btn:hover { color: var(--tc-charcoal); background: var(--tc-cream-deep); }
.tc-pp-viewer__btn[aria-pressed="true"] { background: var(--tc-charcoal); color: var(--tc-cream); }
.tc-pp-viewer__btn:focus-visible { outline: 2px solid var(--tc-charcoal); outline-offset: 2px; }

.tc-pp-viewer > .tc-pp-viewer__hint {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	margin-top: 0.75rem;
	color: var(--tc-ink-muted);
	font-size: var(--wp--preset--font-size--sm);
	text-align: center;
}
.tc-pp-viewer__hint::before { content: "\21BB"; content: "\21BB" / ""; color: var(--tc-brass); font-size: 1.1em; }

.tc-pp-viewer > .tc-pp-viewer__message {
	margin-top: 1rem;
	padding: 0.75rem 1rem;
	background: var(--tc-white);
	border-left: 2px solid var(--tc-brass);
	border-radius: var(--tc-radius);
	color: var(--tc-ink-mid);
	font-size: var(--wp--preset--font-size--sm);
}

@media (max-width: 599px) {
	.tc-pp-viewer > .tc-pp-viewer__bar { justify-content: center; }
	.tc-pp-viewer__group { flex: 1 1 100%; }
	.tc-pp-viewer__btn { flex: 1 1 0; padding-inline: 0.5rem; }
	.tc-pp-viewer__load { padding-inline: 1.25rem; }
}

@media (min-width: 782px) {
	.tc-pp-viewer > .tc-pp-viewer__bar {
		position: absolute;
		inset: 1.25rem 1.25rem auto;
		z-index: 5;
		margin: 0;
		pointer-events: none; /* the gap between the groups lets drags reach the model */
	}
	.tc-pp-viewer__group { pointer-events: auto; box-shadow: var(--tc-shadow); }
	.tc-pp-viewer > .tc-pp-viewer__hint {
		position: absolute;
		left: 50%;
		bottom: 1.25rem;
		z-index: 5;
		margin: 0;
		padding: 0.55rem 1.1rem;
		translate: -50% 0;
		background: var(--tc-charcoal);
		border-radius: 999px;
		color: var(--tc-cream);
		white-space: nowrap;
		pointer-events: none;
		transition: opacity var(--tc-base) var(--tc-ease);
	}
	.tc-pp-viewer__hint::before { color: var(--tc-brass-light); }
	/* Over the frame only while the 3D view is live; before that the start button holds the centre. */
	.tc-pp-viewer:not(.is-live) > .tc-pp-viewer__hint,
	.tc-pp-viewer.has-interacted > .tc-pp-viewer__hint { opacity: 0; }
	.tc-pp-viewer.is-loading > .tc-pp-viewer__hint { display: none; }
	.tc-pp-viewer > .tc-pp-viewer__message { position: absolute; inset: auto 1.25rem 1.25rem; z-index: 5; margin: 0; box-shadow: var(--tc-shadow); }
}

.tc-project-viewer .tc-pp-viewer-note { margin-block-start: 1.25rem; }
@media (min-width: 782px) {
	.tc-project-viewer .tc-pp-viewer-note { text-align: center; }
}

/* ---------- approved proposal ---------- */
.tc-proposal-card > .tc-pp-proposal-intro {
	margin: 0 0 1.25rem;
	padding-bottom: 1rem;
	border-bottom: 1px solid var(--tc-line);
	color: var(--tc-ink-mid);
	font-weight: 600;
}
.tc-project-proposal .tc-pp-summary { margin-block-start: 1.25rem; color: var(--tc-ink-mid); font-size: var(--wp--preset--font-size--lg); line-height: 1.55; }

/* ---------- timeline as an ordered list ---------- */
ol.tc-timeline { margin: 0; padding: 0; list-style: none; }
ol.tc-timeline > li { margin: 0; }
ol.tc-timeline > li::marker { content: none; }

/* ---------- design studies: one or two cards keep a sensible width; four sit two by two, then in a row ---------- */
@media (min-width: 600px) {
	.wp-block-group.tc-like-grid.tc-pp-like-1.tc-pp-like-1 { grid-template-columns: minmax(0, 26rem); }
	.wp-block-group.tc-like-grid.tc-pp-like-2.tc-pp-like-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.wp-block-group.tc-like-grid.tc-pp-like-4.tc-pp-like-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
	.wp-block-group.tc-like-grid.tc-pp-like-2.tc-pp-like-2 { grid-template-columns: repeat(2, minmax(0, 26rem)); }
}
@media (min-width: 1280px) {
	.wp-block-group.tc-like-grid.tc-pp-like-4.tc-pp-like-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- motion off ---------- */
@media (prefers-reduced-motion: reduce) {
	.tc-pp-viewer__poster,
	.tc-pp-viewer__model,
	.tc-pp-viewer__load,
	.tc-pp-viewer__btn,
	.tc-pp-viewer__progress-bar,
	.tc-pp-viewer > .tc-pp-viewer__hint { transition: none; }
}

/* ---------- print: the poster and the text, no controls ---------- */
@media print {
	.tc-pp-viewer__start,
	.tc-pp-viewer__progress,
	.tc-pp-viewer__bar,
	.tc-pp-viewer__hint,
	.tc-pp-viewer__model { display: none !important; }
	.tc-pp-viewer.is-live .tc-pp-viewer__poster { opacity: 1; visibility: visible; }
}