/* =========================================================================
   Arca Portfolio v1.1 — architectural archive / drawing sheet aesthetic
   ========================================================================= */

.arca-portfolio,
.arca-modal,
.arca-single {
	--arca-paper: #E9E7E1;
	--arca-paper-2: #F4F2EC;
	--arca-ink: #1A1814;
	--arca-ink-soft: #6E695F;
	--arca-ink-faint: #A39E94;
	--arca-line: #CBC7BD;
	--arca-line-2: #DAD6CC;
	--arca-accent: #155A60;
	--arca-shadow: 18px 18px 40px rgba(26, 24, 20, .07);
	--arca-ease: cubic-bezier(.22, .61, .36, 1);
	--arca-sans: "Vazirmatn", Tahoma, "Segoe UI", system-ui, sans-serif;
	--arca-display: "Markazi Text", Georgia, serif;
	--arca-maxw: 1240px;
}

.arca-portfolio,
.arca-portfolio *,
.arca-modal,
.arca-modal *,
.arca-single,
.arca-single * {
	box-sizing: border-box;
}

.arca-portfolio,
.arca-single {
	direction: rtl;
	font-family: var(--arca-sans);
	color: var(--arca-ink);
	background-color: var(--arca-paper);
	background-image:
		linear-gradient(to right, rgba(26, 24, 20, .028) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(26, 24, 20, .028) 1px, transparent 1px);
	background-size: 46px 46px;
	background-position: center top;
	line-height: 1.75;
	font-weight: 300;
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
	width: 100%;
}

.arca-portfolio a,
.arca-single a {
	color: inherit;
}

.arca-display {
	font-family: var(--arca-display);
	font-weight: 500;
	line-height: 1.18;
}

.arca-port-inner,
.arca-single-inner {
	max-width: var(--arca-maxw);
	margin: 0 auto;
	padding: 0 clamp(1.1rem, 4vw, 3rem);
}

/* =========================================================================
   Archive intro
   ========================================================================= */
.arca-port-head {
	padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(1.6rem, 3vw, 2.4rem);
}

.arca-intro-eyebrow {
	display: inline-flex;
	align-items: center;
	gap: .6rem;
	font-size: .74rem;
	letter-spacing: .1em;
	color: var(--arca-ink-soft);
	margin-bottom: 1.4rem;
}

.arca-intro-eyebrow::before {
	content: "";
	width: 34px;
	height: 1px;
	background: var(--arca-ink-soft);
}

.arca-port-title {
	margin: 0;
	font-size: clamp(2.7rem, 7vw, 4.6rem);
	letter-spacing: -.015em;
	color: var(--arca-ink);
}

.arca-port-sub {
	max-width: 48ch;
	margin: 1.3rem 0 0;
	font-size: clamp(1rem, 2.2vw, 1.12rem);
	line-height: 2;
	color: var(--arca-ink-soft);
	font-weight: 300;
}

.arca-intro-stats {
	display: flex;
	gap: clamp(1.6rem, 4vw, 3.4rem);
	margin-top: 2.2rem;
	flex-wrap: wrap;
}

.arca-stat-num {
	font-size: 2.1rem;
	font-weight: 600;
	line-height: 1;
	font-variant-numeric: tabular-nums;
}

.arca-stat-label {
	font-size: .8rem;
	color: var(--arca-ink-soft);
	margin-top: .35rem;
}

/* =========================================================================
   Filters
   ========================================================================= */
.arca-filters {
	position: sticky;
	top: 0;
	z-index: 30;
	margin: 0 calc(clamp(1.1rem, 4vw, 3rem) * -1);
	background: rgba(233, 231, 225, .86);
	-webkit-backdrop-filter: blur(8px);
	backdrop-filter: blur(8px);
	border-top: 1px solid var(--arca-line);
	border-bottom: 1px solid var(--arca-line);
}

.admin-bar .arca-filters {
	top: 32px;
}

.arca-filters-in {
	max-width: var(--arca-maxw);
	margin: 0 auto;
	padding: 1.05rem clamp(1.1rem, 4vw, 3rem);
	display: flex;
	align-items: center;
	gap: clamp(.9rem, 2.4vw, 2rem);
	overflow-x: auto;
	scrollbar-width: none;
}

.arca-filters-in::-webkit-scrollbar {
	display: none;
}

.arca-filter {
	position: relative;
	border: 0;
	background: none;
	cursor: pointer;
	white-space: nowrap;
	font-family: var(--arca-sans);
	font-size: .98rem;
	font-weight: 400;
	color: var(--arca-ink-soft);
	padding: .15rem .1rem;
	transition: color .25s var(--arca-ease);
	flex: 0 0 auto;
}

.arca-filter:hover {
	color: var(--arca-ink);
}

.arca-filter.is-active {
	color: var(--arca-ink);
	font-weight: 500;
}

.arca-filter::after {
	content: "";
	position: absolute;
	inset-inline: -.15rem;
	bottom: -.5rem;
	height: .42rem;
	border-bottom: 1.6px solid var(--arca-accent);
	border-inline: 1.6px solid var(--arca-accent);
	opacity: 0;
	transform: scaleX(.5);
	transform-origin: center;
	transition: opacity .28s var(--arca-ease), transform .28s var(--arca-ease);
}

.arca-filter.is-active::after {
	opacity: 1;
	transform: scaleX(1);
}

.arca-filter:focus-visible {
	outline: 2px solid var(--arca-accent);
	outline-offset: 4px;
	border-radius: 2px;
}

/* =========================================================================
   Count + grid
   ========================================================================= */
.arca-countline {
	padding: 1.6rem 0 .4rem;
	margin: 0;
	font-size: .82rem;
	color: var(--arca-ink-soft);
	letter-spacing: .02em;
	font-variant-numeric: tabular-nums;
}

.arca-grid {
	display: grid;
	gap: clamp(1.6rem, 3.4vw, 3rem) clamp(1.4rem, 2.6vw, 2.4rem);
	grid-template-columns: repeat(var(--cols, 3), minmax(0, 1fr));
	padding: 1.4rem 0 clamp(4rem, 8vw, 7rem);
	transition: opacity .18s var(--arca-ease);
}

.arca-grid.is-switching {
	opacity: 0;
}

.arca-card {
	display: flex;
	flex-direction: column;
	border: 0;
	background: none;
	cursor: pointer;
	text-align: right;
	font-family: var(--arca-sans);
	color: inherit;
	padding: 0;
	text-decoration: none !important;
	animation: arca-rise .6s var(--arca-ease) both;
}

@keyframes arca-rise {
	from { opacity: 0; transform: translateY(16px); }
	to { opacity: 1; transform: none; }
}

.arca-card.is-hidden {
	display: none;
}

.arca-card-media {
	position: relative;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background: var(--arca-paper-2);
	border: 1px solid var(--arca-line-2);
}

.arca-card-media::after {
	content: "";
	position: absolute;
	inset: 0;
	pointer-events: none;
	background:
		linear-gradient(to right, rgba(26, 24, 20, .04) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(26, 24, 20, .04) 1px, transparent 1px);
	background-size: 22px 22px;
	z-index: 0;
}

.arca-card-img {
	position: relative;
	z-index: 1;
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform .9s var(--arca-ease), filter .5s var(--arca-ease);
}

.arca-card:hover .arca-card-img,
.arca-card:focus-visible .arca-card-img {
	transform: scale(1.045);
}

.arca-card-sheet {
	position: absolute;
	z-index: 2;
	top: 0;
	inset-inline-start: 0;
	background: var(--arca-ink);
	color: var(--arca-paper-2);
	font-size: .72rem;
	font-weight: 500;
	letter-spacing: .05em;
	padding: .28rem .55rem;
	font-variant-numeric: tabular-nums;
}

.arca-card-noimg {
	position: absolute;
	z-index: 1;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.1rem;
	font-weight: 500;
	color: var(--arca-ink-faint);
	background:
		linear-gradient(to right, rgba(26, 24, 20, .04) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(26, 24, 20, .04) 1px, transparent 1px);
	background-size: 22px 22px;
}

.arca-card-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	margin-top: 1rem;
	padding-bottom: .6rem;
	border-bottom: 1px solid var(--arca-line);
	font-size: .78rem;
	color: var(--arca-ink-soft);
}

.arca-card-cat {
	letter-spacing: .04em;
}

.arca-card-arrow {
	color: var(--arca-ink-faint);
	transition: transform .35s var(--arca-ease), color .35s var(--arca-ease);
}

.arca-card:hover .arca-card-arrow,
.arca-card:focus-visible .arca-card-arrow {
	transform: translateX(-5px);
	color: var(--arca-accent);
}

.arca-card-title {
	font-size: 1.5rem;
	margin: .7rem 0 0;
	color: var(--arca-ink);
}

.arca-card-sub {
	font-size: .85rem;
	color: var(--arca-ink-soft);
	margin: .25rem 0 0;
	font-variant-numeric: tabular-nums;
}

.arca-card:focus-visible {
	outline: 2px solid var(--arca-accent);
	outline-offset: 6px;
}

.arca-empty,
.arca-noresult {
	grid-column: 1 / -1;
	margin: 0;
	padding: 3rem 1rem;
	text-align: center;
	font-size: 1rem;
	line-height: 2;
	color: var(--arca-ink-soft);
	background: var(--arca-paper-2);
	border: 1px dashed var(--arca-line-2);
}

.arca-noresult {
	margin: -4rem 0 5rem;
}

.arca-noresult[hidden] {
	display: none;
}

/* =========================================================================
   Modal shell
   ========================================================================= */
html.arca-lock {
	overflow: hidden;
}

.arca-modal {
	position: fixed;
	inset: 0;
	z-index: 99999;
	display: none;
	font-family: var(--arca-sans);
	direction: rtl;
}

.arca-modal.is-open {
	display: block;
}

.arca-modal-overlay {
	position: absolute;
	inset: 0;
	background: rgba(20, 19, 17, .55);
	-webkit-backdrop-filter: blur(3px);
	backdrop-filter: blur(3px);
	animation: arca-fade .25s var(--arca-ease) both;
}

.arca-modal-panel {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: min(1180px, 94vw);
	max-height: 92vh;
	overflow-y: auto;
	-webkit-overflow-scrolling: touch;
	background-color: var(--arca-paper);
	background-image:
		linear-gradient(to right, rgba(26, 24, 20, .028) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(26, 24, 20, .028) 1px, transparent 1px);
	background-size: 46px 46px;
	box-shadow: 0 30px 80px -24px rgba(20, 19, 17, .45);
	animation: arca-modal-rise .34s var(--arca-ease) both;
}

@keyframes arca-fade {
	from { opacity: 0; }
	to { opacity: 1; }
}

@keyframes arca-modal-rise {
	from { opacity: 0; transform: translate(-50%, calc(-50% + 16px)); }
	to { opacity: 1; transform: translate(-50%, -50%); }
}

.arca-modal-close {
	position: sticky;
	top: 1rem;
	left: 1rem;
	margin: 1rem 1rem -3.6rem auto;
	width: 2.6rem;
	height: 2.6rem;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--arca-paper-2);
	border: 1px solid var(--arca-line-2);
	border-radius: 100px;
	cursor: pointer;
	z-index: 5;
	transition: background-color .2s var(--arca-ease), border-color .2s var(--arca-ease);
}

.arca-modal-close:hover {
	background: var(--arca-paper);
	border-color: var(--arca-ink-soft);
}

.arca-modal-close span {
	position: absolute;
	width: 15px;
	height: 1.5px;
	background: var(--arca-ink);
	pointer-events: none;
}

.arca-modal-close span:first-child { transform: rotate(45deg); }
.arca-modal-close span:last-child { transform: rotate(-45deg); }

.arca-modal-content {
	outline: none;
}

.arca-modal-loader {
	display: flex;
	gap: .5rem;
	align-items: center;
	justify-content: center;
	min-height: 50vh;
}

.arca-modal-loader span {
	width: 10px;
	height: 10px;
	background: var(--arca-line-2);
	animation: arca-pulse 1s var(--arca-ease) infinite;
}

.arca-modal-loader span:nth-child(2) { animation-delay: .15s; }
.arca-modal-loader span:nth-child(3) { animation-delay: .3s; }

@keyframes arca-pulse {
	0%, 100% { opacity: .35; transform: translateY(0); }
	50% { opacity: 1; transform: translateY(-5px); background: var(--arca-accent); }
}

/* =========================================================================
   Detail layout — text right, gallery left
   ========================================================================= */
.arca-detail {
	padding: clamp(1.4rem, 3vw, 2.2rem) clamp(1.1rem, 4vw, 3rem) clamp(4rem, 8vw, 7rem);
	font-family: var(--arca-sans);
	color: var(--arca-ink);
}

.arca-single .arca-detail {
	padding-inline: 0;
}

.arca-detail-grid {
	display: grid;
	grid-template-columns: 1.02fr .98fr;
	gap: clamp(2rem, 5vw, 4.5rem);
	align-items: start;
	max-width: var(--arca-maxw);
	margin: 0 auto;
}

.arca-detail-main {
	position: sticky;
	top: 5.6rem;
}

.arca-detail-sheet {
	font-size: .76rem;
	letter-spacing: .08em;
	color: var(--arca-ink-soft);
}

.arca-detail-title {
	font-size: clamp(2.4rem, 5vw, 3.6rem);
	letter-spacing: -.015em;
	margin: .7rem 0 1.1rem;
	color: var(--arca-ink);
}

.arca-detail-metarow {
	display: flex;
	flex-wrap: wrap;
	gap: .6rem 1.4rem;
	font-size: .86rem;
	color: var(--arca-ink-soft);
	padding-bottom: 1.6rem;
	border-bottom: 1px solid var(--arca-line);
	font-variant-numeric: tabular-nums;
}

.arca-detail-metarow span {
	position: relative;
}

.arca-detail-metarow span + span::before {
	content: "";
	position: absolute;
	inset-inline-end: -.85rem;
	top: .45em;
	width: 1px;
	height: .9em;
	background: var(--arca-line);
}

.arca-detail-body {
	margin-top: 1.6rem;
	font-size: 1rem;
	line-height: 2.05;
	color: #3B372F;
	font-weight: 300;
}

.arca-detail-body > *:first-child { margin-top: 0; }
.arca-detail-body > *:last-child { margin-bottom: 0; }

.arca-detail-body p {
	margin: 0 0 1.1rem;
}

.arca-detail-body h2,
.arca-detail-body h3,
.arca-detail-body h4 {
	font-family: var(--arca-display);
	font-weight: 600;
	line-height: 1.4;
	margin: 1.8rem 0 .75rem;
	color: var(--arca-ink);
}

.arca-detail-body a {
	color: var(--arca-accent);
	text-decoration: underline;
	text-underline-offset: 3px;
}

.arca-detail-body ul,
.arca-detail-body ol {
	margin: 0 0 1.1rem;
	padding-right: 1.3rem;
	padding-left: 0;
}

.arca-detail-body li {
	margin-bottom: .5rem;
}

.arca-titleblock {
	margin-top: 2.2rem;
	border: 1.6px solid var(--arca-ink);
}

.arca-titleblock-cap {
	font-size: .72rem;
	letter-spacing: .08em;
	color: var(--arca-paper-2);
	background: var(--arca-ink);
	padding: .5rem .9rem;
}

.arca-titleblock-row {
	display: flex;
	justify-content: space-between;
	gap: 1rem;
	padding: .72rem .9rem;
	font-size: .9rem;
	border-bottom: 1px solid var(--arca-line-2);
}

.arca-titleblock-row:last-child {
	border-bottom: 0;
}

.arca-titleblock-k {
	color: var(--arca-ink-soft);
	font-weight: 400;
}

.arca-titleblock-v {
	font-weight: 500;
	font-variant-numeric: tabular-nums;
	text-align: left;
}

.arca-gallery {
	display: flex;
	flex-direction: column;
	gap: clamp(.9rem, 2vw, 1.4rem);
}

.arca-gallery figure {
	margin: 0;
}

.arca-gallery-media {
	position: relative;
	overflow: hidden;
	background: var(--arca-paper-2);
	border: 1px solid var(--arca-line-2);
}

.arca-gallery-media::after {
	content: "";
	position: absolute;
	inset: 0;
	pointer-events: none;
	background:
		linear-gradient(to right, rgba(26, 24, 20, .04) 1px, transparent 1px),
		linear-gradient(to bottom, rgba(26, 24, 20, .04) 1px, transparent 1px);
	background-size: 22px 22px;
}

.arca-gallery-media img {
	position: relative;
	z-index: 1;
	display: block;
	width: 100%;
	height: auto;
	object-fit: cover;
}

.arca-gallery figcaption {
	display: flex;
	justify-content: space-between;
	gap: 1rem;
	font-size: .76rem;
	color: var(--arca-ink-soft);
	margin-top: .55rem;
	letter-spacing: .02em;
}

.arca-gallery figcaption .num {
	font-variant-numeric: tabular-nums;
	color: var(--arca-ink-faint);
}

.arca-gallery-empty {
	min-height: 320px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--arca-ink-faint);
}

.arca-detail-error {
	padding: 4rem 2rem;
	text-align: center;
	font-size: 1rem;
	color: var(--arca-ink-soft);
}

/* =========================================================================
   Single-project fallback
   ========================================================================= */
.arca-single {
	min-height: 60vh;
}

.arca-single-inner {
	padding-top: clamp(1.4rem, 3vw, 2.2rem);
	padding-bottom: clamp(4rem, 8vw, 7rem);
}

.arca-back {
	display: inline-flex;
	align-items: center;
	gap: .55rem;
	border: 0;
	background: none;
	font-family: var(--arca-sans);
	font-size: .92rem;
	color: var(--arca-ink);
	cursor: pointer;
	padding: .4rem 0;
	margin-bottom: clamp(1.6rem, 3vw, 2.4rem);
	text-decoration: none !important;
}

.arca-back::before {
	content: "";
	width: 30px;
	height: 1px;
	background: var(--arca-ink);
	transition: width .3s var(--arca-ease);
}

.arca-back:hover::before {
	width: 44px;
}

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 1024px) {
	.arca-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (max-width: 860px) {
	.arca-detail-grid {
		grid-template-columns: 1fr;
		gap: 2.4rem;
	}

	.arca-detail-main {
		position: static;
		order: 2;
	}

	.arca-gallery {
		order: 1;
	}
}

@media (max-width: 782px) {
	.admin-bar .arca-filters {
		top: 46px;
	}
}

@media (max-width: 640px) {
	.arca-grid {
		grid-template-columns: 1fr;
	}

	.arca-port-title {
		font-size: clamp(2.2rem, 12vw, 3.2rem);
	}

	.arca-modal-panel {
		width: 100vw;
		max-width: 100vw;
		height: 100vh;
		max-height: 100vh;
		top: 0;
		left: 0;
		transform: none;
		animation: arca-fade .25s var(--arca-ease) both;
	}

	.arca-modal-close {
		top: .65rem;
		left: .65rem;
		margin-top: .65rem;
		margin-left: .65rem;
	}

	.arca-detail {
		padding-top: 2rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.arca-portfolio *,
	.arca-modal *,
	.arca-single * {
		animation-duration: .001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: .001ms !important;
	}
}