/* Шрифты */
@font-face {
	font-family: 'JetBrainsMono';
	src: local('JetBrainsMono'),
			 url('../fonts/JetBrainsMono/JetBrainsMono-VF.woff2') format("woff2");
	font-weight: 300 800;
	font-stretch: 25% 125%;
	font-display: swap;
}

/* Переменные */
:root {
	--ff-fallback: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
	--ff-main: 'JetBrainsMono', var(--ff-fallback);
	--ff-size-base: clamp(1rem, 2vw, 1.1rem);
	--fw-thin: 300;
	--fw-regular: 400;
	--fw-medium: 600;
	--fw-bold: 800;
	--line-height: 1.5;
	--spacing-unit: 1rem;
	--border-radius: 0.4em;
	--transition-duration: 0.2s;
	--avatar-size: clamp(12.5rem, 30vw, 15.625rem);
	/* Светлая тема */
	--clr-font: #0f0f1a;
	--clr-background: #f8f9fa;
	--clr-primary: #0f0f1a;
	--clr-primary-hover: #f0f0f0;
	--clr-active: #dddddd;
	--clr-focus: rgba(0, 0, 0, 0.1);
	--clr-error-code: #6b1c1c; /* #c4d204 #f9432f;*/
}

@media screen and (prefers-color-scheme: dark) {
	:root {
		/* Темная тема */
		--clr-font: #f8f8ff;
		--clr-background: #0a0a0f;
		--clr-primary: #f8f8ff;
		--clr-primary-hover: #333333;
		--clr-active: #444444;
		--clr-focus: rgba(240, 240, 240, 0.3);
		--clr-error-code: #aa1f1f;
	}
}

/* Утилиты */
@media (prefers-reduced-motion: reduce) {
	* {
		animation: none !important;
		transition: none !important;
		scroll-behavior: auto !important;
	}
}

@media (prefers-reduced-motion: no-preference) {
	html {
		scroll-behavior: smooth;
	}
}

@media (forced-colors: active) {
	* {
		forced-color-adjust: none;
	}
}

::selection {
	background: var(--clr-font);
	color: var(--clr-background);
	text-shadow: none;
}

.visually-hidden {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip-path: inset(50%); /* clip: rect(0, 0, 0, 0); */
	white-space: nowrap;
	border: 0;
}

.noselect {
	user-select: none;
}

svg {
	fill: currentColor;
	stroke: currentColor;
	width: 100%;
	height: 100%;
	max-width: 100%;
	vertical-align: middle;
	pointer-events: none; /* Игнорирование кликов (если SVG декоративный) */
}

svg use {
	fill: inherit;
	stroke: inherit;
}

img[src$=".svg"] { /* Если SVG используется как <img> */
	width: 100%;
	height: auto;
	display: block;
}

/* Базовые стили */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

html {
	font-size: 100%;
	scrollbar-width: thin;
	scrollbar-color: var(--clr-font) transparent; /* Firefox */
}

html::-webkit-scrollbar {
	width: 8px;
	height: 8px;
}

html::-webkit-scrollbar-track {
	background: transparent;
}

html::-webkit-scrollbar-thumb {
	background: linear-gradient(transparent, var(--clr-font));
	border-radius: 2px;
}

html::-webkit-scrollbar-thumb:hover {
	background: linear-gradient(transparent, var(--clr-active));
}

body {
	font-family: var(--ff-main);
	font-size: var(--ff-size-base);
	line-height: var(--line-height);
	color: var(--clr-font);
	background-color: var(--clr-background);
	hyphens: auto;
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	overflow-x: hidden;
}

/* Футер общий */
.page-footer {
	margin-top: auto;
	padding: var(--spacing-unit) 0;
}

.copyright {
	font-size: clamp(0.8rem, 2vw, 0.9rem);
	opacity: 0.8;
	font-variation-settings: "wght" var(--fw-thin);
}

/* Кнопка "Наверх" */
.back-to-top {
	position: fixed;
	right: clamp(0.75rem, 2vw, 1.25rem);
	bottom: clamp(0.75rem, 2vw, 1.25rem);
	width: clamp(2.25rem, 5vw, 2.75rem);
	height: clamp(2.25rem, 5vw, 2.75rem);
	border-radius: 50%;
	background-color: var(--clr-primary);
	color: var(--clr-background);
	border: none;
	cursor: pointer;
	opacity: 0;
	visibility: hidden;
	transform: translateY(1rem);
	transition:
		opacity 0.3s ease,
		transform 0.3s ease,
		visibility 0s linear 0.3s;
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 999;
	box-shadow: 0 1px 6px rgba(0, 0, 0, 0.15);
	padding: 0;
}

.back-to-top.visible {
	opacity: 0.9;
	visibility: visible;
	transform: translateY(0);
	transition:
		opacity 0.3s ease,
		transform 0.3s ease,
		visibility 0s linear;
}

@media (max-width: 440px) {
	.back-to-top {
		bottom: calc(clamp(0.75rem, 2vw, 1.25rem) + 3rem);
	}
}

.back-to-top:hover {
	background-color: var(--clr-font);
	transform: translateY(-0.15rem);
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
	transform: scale(0.95);
}

.back-to-top:focus-visible {
	outline: 2px solid var(--clr-primary);
	outline-offset: 2px;
}


/* Структура главной страницы */
.page-header,
.page-footer {
	padding: var(--spacing-unit);
	text-align: center;
}

.page-main {
	flex: 1;
	display: flex;
	justify-content: center;
	align-items: center;
	padding: var(--spacing-unit);
}

/* Карточка */
.card {
	max-width: 95%;
	width: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: calc(var(--spacing-unit) * 1.5);
	padding: calc(var(--spacing-unit) * 1.5);
	opacity: 0;
	transform: translateY(1rem);
	will-change: transform, opacity;
	animation: fadeInUp 0.8s ease-out forwards;
	animation-delay: 0.2s;
}

@keyframes fadeInUp {
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (min-width: 48em) {
	.card {
		max-width: min(600px, 90%);
		padding: calc(var(--spacing-unit) * 2);
	}
}

.card-image {
	width: var(--avatar-size);
	height: var(--avatar-size);
	color: var(--clr-font);
	min-width: max(9.375em, 20vw); /* 150px = 9.375em */
	display: flex;
	justify-content: center;
	align-items: center;
	flex-shrink: 0;
}

/* Текстовый контент */
.card-content {
	text-align: center;
	display: flex;
	flex-direction: column;
	gap: calc(var(--spacing-unit) * 0.75);
	width: 100%;
}

.card-title {
	font-size: clamp(1.8rem, 6vw, 2.5rem);
	font-variation-settings: "wght" var(--fw-medium);
	line-height: 1.15;
	letter-spacing: -0.02em;
}

.card-description {
	font-size: clamp(1rem, 3.5vw, 1.25rem);
	opacity: 0.9;
	font-variation-settings: "wght" var(--fw-regular);
	margin: 0 auto;
	max-width: 35ch;
	line-height: 1.4;
}

/* Кнопки и ссылки */
.card-actions {
	width: 100%;
	max-width: min(100%, 20em); /* 20em = 350px */
}

.actions-list {
	list-style: none;
	display: flex;
	flex-direction: column;
	gap: var(--spacing-unit);
	width: 100%;
	padding: 0;
	margin: 0;
}

/* Кнопки на главной */
.action-button {
	display: block;
	width: 100%;
	padding: calc(var(--spacing-unit) * 0.7) var(--spacing-unit);
	font-size: clamp(0.95rem, 3vw, 1.05rem);
	font-variation-settings: "wght" var(--fw-medium);
	text-align: center;
	color: var(--clr-primary);
	background-color: transparent;
	border: 1px solid var(--clr-primary);
	border-radius: var(--border-radius);
	cursor: pointer;
	text-decoration: none;
	transition: all var(--transition-duration) ease;
}

.action-button:hover {
	background-color: var(--clr-primary);
	color: var(--clr-primary-hover);
	transform: translateY(-0.1em);
	box-shadow: 0 0.2em 0.4em rgba(0, 0, 0, 0.1);
}

/* Отключаем hover-эффекты на тач-устройствах */
@media (hover: none) and (pointer: coarse) {
	.action-button:hover {
		background-color: transparent;
		color: var(--clr-primary);
		transform: none;
		box-shadow: none;
	}
}

.action-button:active {
	background-color: var(--clr-active);
	transform: translateY(0);
	box-shadow: none;
}

.action-button:focus-visible {
	outline: 2px solid var(--clr-primary);
	outline-offset: 2px;
	background-color: var(--clr-focus);
}

/* ==================== */
/* СТРАНИЦЫ МАШИН       */
/* ==================== */
.car-page {
	padding: clamp(1rem, 5vw, 2rem) 1rem;
	box-sizing: border-box;
	max-width: 100vw;
	opacity: 0;
	transform: translateY(1rem);
	animation: fadeInUp 0.8s ease-out forwards;
	animation-delay: 0.3s;
}

.progress-container {
	width: 100%;
	height: 0.15em;
	background: var(--clr-background);
	position: fixed;
	top: 0;
	left: 0;
	z-index: 9999;
}

.progress-container__bar {
	height: 100%;
	background: var(--clr-font);
	width: 0%;
	transition: width 0.1s ease-out;
}

@media (max-width: 48em) {
	.progress-container {
		height: 0.12em;
	}
}

.car-card {
	max-width: min(100%, 87.5em);
	margin: 0 auto;
	padding: clamp(1rem, 3vw, 2rem);
	box-sizing: border-box;
}

.car-image-container {
	width: 100%;
	max-width: 50em;
	margin: 0 auto clamp(1rem, 4vw, 2rem);
	padding: 0 0.5rem;
	box-sizing: border-box;
}

.car-image {
	width: 100%;
	height: auto;
	border-radius: var(--border-radius);
	object-fit: cover;
	display: block;
}

.car-title {
	font-size: clamp(1.5rem, 6vw, 2.5rem);
	font-variation-settings: "wght" var(--fw-medium);
	line-height: 1.2;
	text-align: center;
	margin: 0 auto clamp(0.75rem, 3vw, 1.5rem);
	padding: 0 1rem;
	max-width: 100%;
}

.car-description {
	font-size: clamp(1rem, 3.5vw, 1.25rem);
	opacity: 0.9;
	font-variation-settings: "wght" var(--fw-regular);
	margin: 0 auto clamp(1.5rem, 5vw, 3rem);
	line-height: 1.5;
	text-align: center;
	padding: 0 1rem;
	max-width: 50em;
}

.specs-wrapper {
	width: 100%;
	max-width: 75em;
	margin: 0 auto;
	padding: 0 0.5rem;
}

.specs-container {
	column-count: 1;
	column-gap: clamp(1rem, 3vw, 2rem);
	margin-bottom: clamp(1rem, 4vw, 2rem);
}

@media (min-width: 56.25em) {
	.specs-container {
		column-count: 2;
	}
}

.specs-category {
	break-inside: avoid;
	margin-bottom: clamp(1rem, 3vw, 1.5rem);
}

.specs-category h3 {
	font-size: clamp(1.1rem, 3.5vw, 1.4rem);
	font-variation-settings: "wght" var(--fw-medium);
	margin-bottom: 1rem;
	padding-bottom: 0.5rem;
	border-bottom: 1px solid var(--clr-primary);
}

.specs-list {
	list-style-type: none;
	font-size: clamp(0.9rem, 3vw, 1rem);
	padding-left: 0.5rem;
	margin-bottom: 1rem;
}

.specs-item {
	margin-bottom: 0.75rem;
	padding-left: 0.75rem;
	border-left: 0.125rem solid var(--clr-primary);
	line-height: 1.4;
	overflow-wrap: break-word;
}

/* Стили для аккордеона передач */
.transmission-details {
	overflow: hidden;
	margin-bottom: 0.75rem;
	position: relative;
	padding-left: 0.75rem;
}

.transmission-details > summary {
	list-style: none;
	cursor: pointer;
	display: flex;
	justify-content: space-between;
	align-items: center;
	position: relative;
	padding-left: 0;
	margin-left: -0.75rem;
}

.transmission-details > summary::-webkit-details-marker {
	display: none;
}

.transmission-details > summary:focus-visible {
	outline: 2px solid var(--clr-primary);
	outline-offset: 2px;
}

.details-marker {
	width: 1em;
	height: 1em;
	transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	flex-shrink: 0;
	margin-left: auto;
}

.transmission-details[open] .details-marker {
	transform: rotate(180deg);
}

.transmission-grid {
	display: grid;
	/* grid-template-columns: repeat(auto-fill, minmax(10em, 1fr)); */
	grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
	gap: 0.5rem 1rem;
	margin-top: 0.75rem;
	padding: 0.5rem 0 0 0.75rem;
}

.transmission-item {
	display: flex;
	gap: 0.5rem;
}

.transmission-label {
	opacity: 0.8;
}

.transmission-value {
	font-variation-settings: "wght" var(--fw-medium);
}

@media (max-width: 480px) {
	.transmission-grid {
		grid-template-columns: 1fr;
	}
}

/* ==================== */
/* СТРАНИЦЫ ОШИБОК      */
/* ==================== */
.error-code {
	font-size: clamp(8rem, 30vw, 12rem);
	font-variation-settings: "wght" var(--fw-bold);
	line-height: 0.9;
	color: var(--clr-error-code);
	margin-bottom: calc(var(--spacing-unit) * 0.5);
	letter-spacing: 0.1em;
	transform-origin: center;
}

.error-description {
	font-size: clamp(1.2rem, 4vw, 1.5rem);
	opacity: 0.9;
	font-variation-settings: "wght" var(--fw-regular);
	margin: 0 auto calc(var(--spacing-unit) * 2);
	max-width: 35ch;
	line-height: 1.4;
}

.error-links {
	display: flex;
	gap: calc(var(--spacing-unit) * 1.5);
	justify-content: center;
	flex-wrap: wrap;
}

.error-link {
	color: var(--clr-primary);
	cursor: pointer;
	text-decoration: none;
	font-size: clamp(1rem, 3vw, 1.1rem);
	font-variation-settings: "wght" var(--fw-medium);
	position: relative;
	padding: 0.2em 0;
	transition: color var(--transition-duration) ease;
}

.error-link::after {
	display: inline-block;
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background-color: var(--clr-primary);
	transition: width var(--transition-duration) ease;
}

.error-link:hover {
	color: var(--clr-primary);
}

.error-link:hover::after {
	width: 100%;
}

.error-link:focus-visible {
	outline: 2px solid var(--clr-primary);
	outline-offset: 2px;
}

.error-page .card {
	text-align: center;
	gap: calc(var(--spacing-unit) * 0.5);
}