/*
 * [solongo_about] — "Бидний тухай" (inc/about.php). Зөвхөн tokens.css-ийн утгууд.
 * Танилцуулга → он дараалал (surface) → давуу тал → эмч нар (surface) → технологи (бараан зурвас).
 */

.sl-about {
	color: var(--sl-color-text);
}

.sl-about__wrap {
	width: 100%;
	max-width: 1200px;
	margin-inline: auto;
	padding-inline: var(--sl-space-3);
}

.sl-about section {
	scroll-margin-top: 96px;
}

.sl-about__head {
	margin-bottom: var(--sl-space-5);
	text-align: center;
}

.sl-about__head--row {
	display: flex;
	flex-wrap: wrap;
	align-items: flex-end;
	justify-content: space-between;
	gap: var(--sl-space-2);
	text-align: left;
}

.sl-about .sl-about__h2 {
	margin: 0;
	color: var(--sl-color-text);
	font-size: clamp(28px, 1.8vw + 14px, 40px);
	font-weight: 800;
	line-height: 1.15;
	letter-spacing: -.02em;
}

/* ---- 1. Танилцуулга ---- */
.sl-about__intro {
	display: grid;
	grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
	align-items: center;
	gap: var(--sl-space-6);
	padding-top: var(--sl-section-space);
	padding-bottom: var(--sl-section-space);
}

.sl-about .sl-about__title {
	margin: 0 0 var(--sl-space-3);
	color: var(--sl-color-text);
	font-size: clamp(30px, 2.2vw + 14px, 46px);
	font-weight: 800;
	line-height: 1.12;
	letter-spacing: -.025em;
	text-wrap: balance;
}

.sl-about__title span {
	color: var(--sl-color-primary);
	background: linear-gradient(transparent 68%, color-mix(in srgb, var(--sl-color-glow) 22%, transparent) 68%);
}

.sl-about .sl-about__lead {
	margin: 0 0 var(--sl-space-2);
	color: var(--sl-color-text-muted);
	font-size: 18px;
	line-height: 1.7;
}

.sl-about__stats {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: var(--sl-space-3);
	margin: var(--sl-space-4) 0 0;
	padding-top: var(--sl-space-3);
	border-top: 1px solid var(--sl-color-border);
}

.sl-about__stat {
	margin: 0;
}

.sl-about__stat dt {
	color: var(--sl-color-primary-dark);
	font-size: clamp(26px, 1.2vw + 16px, 34px);
	font-weight: 800;
	line-height: 1.1;
	letter-spacing: -.02em;
}

.sl-about__stat dd {
	margin: 6px 0 0;
	color: var(--sl-color-text-muted);
	font-size: 14px;
	line-height: 1.45;
}

.sl-about__media {
	position: relative;
	margin: 0;
	padding: 0 0 var(--sl-space-3) var(--sl-space-3);
}

/* Ард нь шилжүүлсэн өнгөт хавтан */
.sl-about__media::before {
	content: "";
	position: absolute;
	top: var(--sl-space-5);
	right: calc(-1 * var(--sl-space-3));
	bottom: 0;
	left: 0;
	z-index: 0;
	border-radius: var(--sl-radius-xl);
	background: linear-gradient(140deg, var(--sl-color-tint), color-mix(in srgb, var(--sl-color-sky) 45%, var(--sl-color-bg)));
}

.sl-about .sl-about__media .sl-about__img {
	position: relative;
	z-index: 1;
	display: block;
	width: 100%;
	height: auto;
	max-width: none;
	aspect-ratio: 4 / 3.4;
	object-fit: cover;
	border-radius: var(--sl-radius-xl);
	box-shadow: var(--sl-shadow-lg);
}

.sl-about__badge {
	position: absolute;
	left: 0;
	bottom: var(--sl-space-5);
	z-index: 2;
	display: flex;
	align-items: center;
	gap: 12px;
	padding: 12px 18px 12px 12px;
	border: 1px solid rgba(255, 255, 255, .7);
	border-radius: 18px;
	background: rgba(255, 255, 255, .94);
	box-shadow: 0 20px 40px -16px rgba(11, 22, 56, .4);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
	line-height: 1.3;
}

.sl-about__badge-icon {
	display: grid;
	place-items: center;
	width: 42px;
	height: 42px;
	border-radius: 12px;
	background: linear-gradient(135deg, var(--sl-color-primary), var(--sl-color-ink-2));
	color: #fff;
}

.sl-about__badge strong {
	display: block;
	font-size: 15px;
}

.sl-about__badge small {
	display: block;
	color: var(--sl-color-text-muted);
	font-size: 13px;
}

/* ---- 2. Он дараалал ---- */
.sl-about__history {
	padding: var(--sl-section-space) 0;
	background: linear-gradient(180deg, var(--sl-color-surface), var(--sl-color-tint));
}

.sl-about__timeline {
	position: relative;
	display: grid;
	grid-template-columns: repeat(5, minmax(0, 1fr));
	gap: var(--sl-space-3);
	margin: 0;
	padding: 0;
	list-style: none;
}

/* Хэвтээ шугам (цэгүүдийг холбоно) */
.sl-about__timeline::before {
	content: "";
	position: absolute;
	top: 11px;
	left: 12px;
	right: 12px;
	height: 2px;
	background: linear-gradient(90deg, var(--sl-color-border), var(--sl-color-primary));
}

.sl-about__event {
	position: relative;
	margin: 0;
	padding-top: var(--sl-space-5);
}

.sl-about__dot {
	position: absolute;
	top: 0;
	left: 0;
	width: 24px;
	height: 24px;
	border: 3px solid var(--sl-color-primary);
	border-radius: 50%;
	background: var(--sl-color-bg);
}

.sl-about__event.is-latest .sl-about__dot {
	background: var(--sl-color-primary);
	box-shadow: 0 0 0 6px color-mix(in srgb, var(--sl-color-primary) 18%, transparent);
}

.sl-about__year {
	display: block;
	margin-bottom: 8px;
	color: var(--sl-color-primary);
	font-size: clamp(26px, 1vw + 18px, 32px);
	font-weight: 800;
	line-height: 1;
	letter-spacing: -.02em;
	font-variant-numeric: tabular-nums;
}

.sl-about .sl-about__event-text {
	margin: 0;
	color: var(--sl-color-text);
	font-size: 15px;
	font-weight: var(--sl-font-weight-semibold);
	line-height: 1.5;
}

/* ---- 3. Давуу тал ---- */
.sl-about__why {
	padding-top: var(--sl-section-space);
	padding-bottom: var(--sl-section-space);
}

.sl-about__cards {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: var(--sl-space-3);
	margin: 0;
	padding: 0;
	list-style: none;
}

.sl-about__card {
	position: relative;
	overflow: hidden;
	margin: 0;
	padding: var(--sl-space-4);
	border: 1px solid var(--sl-color-border);
	border-radius: var(--sl-radius-lg);
	background: var(--sl-color-bg);
	box-shadow: var(--sl-shadow-card);
	transition: transform .35s var(--sl-ease-out), box-shadow .35s var(--sl-ease-out), border-color .35s;
}

.sl-about__card::after {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 3px;
	background: linear-gradient(90deg, var(--sl-color-primary), var(--sl-color-sky), var(--sl-color-glow));
	transform: scaleX(0);
	transform-origin: 0 50%;
	transition: transform .45s var(--sl-ease-out);
}

.sl-about__card:hover {
	border-color: color-mix(in srgb, var(--sl-color-primary) 30%, var(--sl-color-border));
	box-shadow: var(--sl-shadow-lg);
	transform: translateY(-4px);
}

.sl-about__card:hover::after {
	transform: scaleX(1);
}

.sl-about__card-icon {
	display: grid;
	place-items: center;
	width: 56px;
	height: 56px;
	margin-bottom: var(--sl-space-2);
	border-radius: 16px;
	background: linear-gradient(135deg, var(--sl-color-tint), color-mix(in srgb, var(--sl-color-sky) 35%, var(--sl-color-bg)));
	color: var(--sl-color-primary);
}

.sl-about .sl-about__card-title {
	margin: 0 0 8px;
	color: var(--sl-color-text);
	font-size: 20px;
	font-weight: var(--sl-font-weight-bold);
	line-height: 1.3;
}

.sl-about__card p {
	margin: 0;
	color: var(--sl-color-text-muted);
	font-size: 16px;
	line-height: 1.6;
}

/* ---- 4. Эмч нар ---- */
.sl-about__team {
	padding: var(--sl-section-space) 0;
	background: var(--sl-color-surface);
}

/* ---- 5. Технологи ---- */
.sl-about__tech-wrap {
	padding-top: var(--sl-section-space);
	padding-bottom: var(--sl-space-6);
}

.sl-about__tech {
	position: relative;
	isolation: isolate;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--sl-space-4);
	overflow: hidden;
	padding: var(--sl-space-6);
	border-radius: 32px;
	background:
		radial-gradient(60% 120% at 100% 0%, rgba(70, 108, 222, .45) 0%, rgba(70, 108, 222, 0) 60%),
		linear-gradient(130deg, var(--sl-color-ink) 0%, var(--sl-color-ink-2) 100%);
	color: #fff;
	box-shadow: var(--sl-shadow-lg);
}

.sl-about__rings {
	top: -55%;
	right: -4%;
	width: 420px;
}

.sl-about .sl-about__tech-title {
	margin: 0 0 10px;
	color: #fff;
	font-size: clamp(24px, 1.4vw + 14px, 34px);
	font-weight: 800;
	line-height: 1.2;
	letter-spacing: -.02em;
}

.sl-about .sl-about__tech-text {
	max-width: 56ch;
	margin: 0;
	color: var(--sl-color-on-dark-muted);
	font-size: 17px;
}

.sl-about__tech .sl-btn {
	flex: 0 0 auto;
}

.sl-about__tech :is(a, button):focus-visible {
	outline-color: #fff;
	box-shadow: 0 0 0 2px var(--sl-color-ink);
}

/* ---- Responsive ---- */
@media (max-width: 1023px) {
	.sl-about__intro {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--sl-space-5);
	}

	.sl-about__media {
		max-width: 640px;
	}

	.sl-about__cards {
		grid-template-columns: minmax(0, 1fr);
	}

	/* Он дараалал: босоо */
	.sl-about__timeline {
		grid-template-columns: minmax(0, 1fr);
		gap: var(--sl-space-3);
		padding-left: 4px;
	}

	.sl-about__timeline::before {
		top: 12px;
		bottom: 12px;
		left: 15px;
		right: auto;
		width: 2px;
		height: auto;
		background: linear-gradient(180deg, var(--sl-color-border), var(--sl-color-primary));
	}

	.sl-about__event {
		padding: 0 0 0 48px;
	}

	.sl-about__year {
		font-size: 24px;
	}

	.sl-about__tech {
		flex-direction: column;
		align-items: flex-start;
		padding: var(--sl-space-5);
	}
}

@media (max-width: 767px) {
	.sl-about__wrap {
		padding-inline: var(--sl-space-2);
	}

	.sl-about__stats {
		gap: var(--sl-space-2);
	}

	.sl-about__stat dd {
		font-size: 13px;
	}

	.sl-about__media {
		padding: 0 0 var(--sl-space-2) var(--sl-space-2);
	}

	.sl-about__media::before {
		right: calc(-1 * var(--sl-space-2));
	}

	.sl-about__badge {
		bottom: var(--sl-space-4);
		padding: 8px 12px 8px 8px;
	}

	.sl-about__card {
		padding: var(--sl-space-3);
	}

	.sl-about__tech {
		padding: var(--sl-space-4) var(--sl-space-3);
		border-radius: 24px;
	}

	.sl-about__tech .sl-btn {
		width: 100%;
	}
}

@media (prefers-reduced-motion: reduce) {
	.sl-about__card,
	.sl-about__card::after {
		transition: none;
	}

	.sl-about__card:hover {
		transform: none;
	}
}