/* Design System Variables from design.json */
@media (max-width: 768px) {
    .d-md-none {
        display: block !important;
    }

    .d-none {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .d-md-none {
        display: none !important;
    }

    .d-none {
        display: block !important;
    }

    .d-md-block {
        display: block !important;
    }
}

.ads-top-wrapper {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

.content-ad {
    margin: 30px 0;
    text-align: center;
    min-height: 90px;
    background: rgba(0, 0, 0, 0.02);
    display: flex;
    align-items: center;
    justify-content: center;
}

:root {
    /* Colors */
    --color-blue: #2e89fb;
    --color-green: #a4dd1d;
    --color-dark-green: #4ec21b;
    --color-light-green: #57c630;
    --color-purple: #a58bdd;
    --color-yellow: #fad400;
    --color-orange: #f77913;
    --color-red: #d41c36;

    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-dark: #091b32;
    --color-gray-medium: #1e325b;
    --color-gray-light: #8895a4;
    --color-gray-lighter: #a4aeb9;
    --color-gray-lightest: #e8ebee;

    --bg-light-blue: #f2f9ff;
    --bg-light-gray: #f7f8fa;
    --gradient-blue: linear-gradient(to top, rgb(235, 245, 254), rgb(247, 251, 255));
    --gradient-dark: linear-gradient(to right, #010a16, #091c33);

    --gradient-green-blue: linear-gradient(to right, rgb(78, 194, 27), rgb(154, 212, 14) 40%, rgb(57, 59, 197), rgb(57, 59, 197), rgb(73, 136, 243), rgb(73, 136, 243));

    /* Typography */
    --font-primary: "Raleway", sans-serif;
    --font-secondary: "Onest", sans-serif;
    --font-tertiary: "Roboto", sans-serif;

    --font-size-h1: clamp(32px, 3vw, 36px);
    --font-size-h2: clamp(26px, 3vw, 30px);
    --font-size-h3: clamp(24px, 3vw, 26px);
    --font-size-body: 16px;
    --font-size-small: 14px;

    /* Spacing */
    --container-max-width: 1300px;
    --section-margin: clamp(60px, 4vw, 100px);
    --element-gap: 20px;

    /* Effects */
    --transition-default: 0.3s;
    --transition-slow: 0.6s cubic-bezier(.615, 0, .07, 1);
    --radius-small: 5px;
    --radius-medium: 10px;
    --radius-large: 20px;
    --shadow-light: 0 0 16px 0 rgba(96, 121, 169, .08);
    --shadow-medium: 0 0 24px 0 rgba(96, 121, 169, .35);
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-body);
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
    line-height: 1.2;
    margin-bottom: var(--element-gap);
}

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

a {
    color: var(--color-blue);
    text-decoration: none;
    transition: var(--transition-default);
}

a:hover {
    color: var(--color-gray-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.section-header,
.article__header {
    margin-bottom: 50px;
    text-align: left;
}

.section-header p {
    color: var(--color-gray-light);
    max-width: 800px;
    margin-top: 10px;
    font-size: 18px;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 50px;
}

/* Logo */
.logo img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

/* Layout Components */
.header {
    background: var(--color-white);
    box-shadow: var(--shadow-light);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

main {
    margin-top: 40px;
}

/* Breadcrumbs */
.breadcrumbs {
    margin-bottom: 25px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-gray-light);
}

.breadcrumbs__item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.breadcrumbs__item:not(:last-child)::after {
    content: "›";
    font-size: 18px;
    line-height: 1;
    color: var(--color-gray-lighter);
}

.breadcrumbs__link {
    color: var(--color-blue);
    font-weight: 500;
    transition: var(--transition-default);
}

.breadcrumbs__link:hover {
    color: var(--color-gray-dark);
    text-decoration: underline;
}

.breadcrumbs__current {
    font-weight: 500;
    color: var(--color-gray-medium);
}

.header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__search {
    flex: 1;
    max-width: 500px;
    margin: 0 40px;
}

.search-box {
    position: relative;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 12px 20px;
    border-radius: var(--radius-large);
    border: 1px solid var(--color-gray-lightest);
    background: var(--bg-light-gray);
    font-size: 14px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-blue);
    background: var(--color-white);
    box-shadow: 0 0 0 4px rgba(46, 137, 251, 0.1);
}

.search-results {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-radius: var(--radius-medium);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    border: 1px solid var(--color-gray-lightest);
}

.search-results.active {
    display: block;
}

.search-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    gap: 15px;
    border-bottom: 1px solid var(--color-gray-lightest);
    transition: background 0.2s ease;
    text-decoration: none;
}

.search-item:last-child {
    border-bottom: none;
}

.search-item:hover {
    background: var(--bg-light-blue);
}

.search-item img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.search-item__info {
    flex: 1;
}

.search-item__name {
    display: block;
    font-weight: 600;
    color: var(--color-gray-dark);
    font-size: 14px;
}

.search-item__type {
    font-size: 11px;
    color: var(--color-gray-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    width: 30px;
    height: 2px;
    background: var(--color-blue);
}

.footer {
    background: var(--color-gray-dark);
    color: var(--color-white);
    padding: 80px 0 40px;
    margin-top: 80px;
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer__col--about {
    padding-right: 40px;
}

.footer__logo {
    margin-bottom: 25px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer__desc {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-gray-light);
    max-width: 320px;
}

.footer__col h4 {
    color: var(--color-white);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 25px;
    position: relative;
}

.footer__col h4::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--color-blue);
}

.footer ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer ul li {
    margin-bottom: 12px;
}

.footer ul li a {
    color: var(--color-gray-light);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition-default);
}

.footer ul li a:hover {
    color: var(--color-blue);
    padding-left: 5px;
}

.footer__bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-gray-medium);
}

.footer__disclaimer {
    font-style: italic;
    opacity: 0.6;
}

@media (max-width: 992px) {
    .footer__inner {
        grid-template-columns: 1fr 1fr;
    }

    .footer__col--about {
        grid-column: span 2;
        padding-right: 0;
    }
}

@media (max-width: 576px) {
    .footer__inner {
        grid-template-columns: 1fr;
    }

    .footer__col--about {
        grid-column: span 1;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    padding: 12px 24px;
    border-radius: var(--radius-medium);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-slow);
    border: none;
}

.button--blue {
    background-color: var(--color-blue);
    color: var(--color-white);
}

.button--blue:hover {
    background-color: #215684;
    transform: translateY(-2px);
}

.button--green {
    background: var(--gradient-green-blue);
    background-size: 250% 100%;
    color: var(--color-white);
}

.button--green:hover {
    background-position: 90% 0;
}

.popular-brands {
    margin-top: 60px;
}

/* Brand Grid */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.brand-card {
    background: var(--color-white);
    border-radius: var(--radius-large);
    padding: 25px 20px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition-slow);
    border: 1px solid var(--color-gray-lightest);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.brand-card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-8px);
    border-color: var(--color-blue);
}

.brand-card__image {
    height: 70px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.brand-card__image img {
    max-height: 100%;
    max-width: 120px;
    object-fit: contain;
}

.brand-card__name {
    display: block;
    font-weight: 700;
    color: var(--color-gray-dark);
    font-size: 18px;
    margin-bottom: 5px;
}

.brand-card__count {
    display: block;
    font-size: 13px;
    color: var(--color-gray-light);
    font-weight: 500;
}

.section-more {
    text-align: center;
    margin-top: 20px;
}

/* Variant Cards */
.variants-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.variant-card {
    background: var(--color-white);
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid var(--color-gray-lightest);
}

.variant-card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-8px);
    border-color: var(--color-blue);
}

.variant-card__image {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-light-gray);
}

.variant-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.variant-card:hover .variant-card__image img {
    transform: scale(1.05);
}

.variant-card__content {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.variant-card h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--color-gray-dark);
    min-height: 2.4em;
    display: flex;
    align-items: center;
    justify-content: center;
}

.variant-card .button {
    width: 100%;
    justify-content: center;
    margin-top: auto;
}

/* Car Hero Section */
.car-hero {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    margin-bottom: 50px;
}

.car-hero__image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-light);
}

.car-hero__specs {
    padding: 30px;
    background: var(--color-white);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-light);
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table th,
.specs-table td {
    padding: 14px 15px;
    text-align: left;
    border-bottom: 1px solid var(--color-gray-lightest);
}

.specs-table th {
    font-weight: 600;
    color: var(--color-gray-light);
    width: 45%;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.specs-table td {
    color: var(--color-gray-dark);
    font-weight: 500;
}

.content-block__text img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-large);
    margin: 30px auto;
    box-shadow: var(--shadow-small);
}

/* Lists */
.content-block__text ul,
.content-block__text ol {
    margin: 20px 0 20px 25px;
}

.content-block__text li {
    margin-bottom: 12px;
    padding-left: 5px;
}

.content-block__text ul {
    list-style: none;
}

.content-block__text ul li::before {
    content: "•";
    color: var(--color-blue);
    font-weight: bold;
    display: inline-block;
    width: 1em;
    margin-left: -1em;
}

/* Custom Content Components */
.process-steps,
.sequence-diagram {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 25px 0;
}

.step {
    display: flex;
    gap: 20px;
    background: var(--color-white);
    padding: 20px;
    border-radius: var(--radius-medium);
    border: 1px solid var(--color-gray-lightest);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--color-blue);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.launch-timeline {
    border-left: 3px solid var(--color-blue);
    margin: 30px 0 30px 20px;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.timeline-item {
    position: relative;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -27px;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--color-blue);
    border-radius: 50%;
    border: 3px solid var(--color-white);
}

.timeline-item .time {
    font-weight: bold;
    color: var(--color-blue);
    font-size: 14px;
}

.systems-grid,
.seasonal-problems,
.complex-problems {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.system-card,
.problem-card,
.season,
.issue,
.scenario {
    background: var(--bg-light-gray);
    padding: 20px;
    border-radius: var(--radius-medium);
    border-top: 4px solid var(--color-blue);
}

.sound-guide {
    background: var(--color-gray-dark);
    color: var(--color-white);
    padding: 25px;
    border-radius: var(--radius-large);
    margin: 25px 0;
}

.sound-item {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.sound-item:last-child {
    margin-bottom: 0;
}

.indicators-guide {
    display: grid;
    gap: 15px;
    margin: 25px 0;
}

.indicator {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--color-white);
    padding: 15px;
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-small);
}

.indicator-light {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* Quiz Styles */
.quiz-container {
    background: var(--bg-light-blue);
    padding: 40px;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-small);
}

.quiz-container h3 {
    font-size: 28px;
    color: var(--color-blue);
    margin-bottom: 15px;
    text-align: center;
}

.quiz-container>p {
    text-align: center;
    font-size: 18px;
    color: var(--color-gray-light);
    margin-bottom: 30px;
}

.quiz-intro {
    text-align: center;
    background: var(--color-white);
    padding: 30px;
    border-radius: var(--radius-medium);
}

#quiz-question h4 {
    font-size: 22px;
    margin-bottom: 25px;
    color: var(--color-gray-dark);
}

.quiz-answers {
    display: grid;
    gap: 12px;
}

.quiz-answer-btn {
    display: block;
    width: 100%;
    padding: 16px 20px;
    background: var(--color-white);
    border: 2px solid var(--color-gray-lightest);
    border-radius: var(--radius-medium);
    text-align: left;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.quiz-answer-btn:hover {
    border-color: var(--color-blue);
    background: var(--bg-light-gray);
    transform: translateX(5px);
}

.quiz-hint {
    margin-top: 20px;
    padding: 15px;
    background: #e3f2fd;
    border-radius: var(--radius-small);
    font-size: 14px;
    color: #1976d2;
    font-style: italic;
    display: none;
    /* Hidden by default */
    align-items: center;
    gap: 10px;
}

.quiz-hint:not(:empty) {
    display: flex;
}

.quiz-hint::before {
    content: "💡";
}

#quiz-result {
    background: var(--color-white);
    padding: 35px;
    border-radius: var(--radius-medium);
    border: 2px solid var(--color-blue);
    text-align: center;
}

#result-title {
    font-size: 24px;
    color: var(--color-blue);
    margin-bottom: 20px;
}

#result-description {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 25px;
    text-align: left;
}

#result-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

#result-actions .button {
    width: 100%;
    justify-content: center;
}

.quiz-warning {
    margin-top: 30px;
    padding: 25px;
    background: #fff8e1;
    border-left: 5px solid #ffc107;
    border-radius: var(--radius-medium);
    font-size: 15px;
    color: #5d4037;
}

.quiz-warning h4 {
    color: #795548;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.quiz-warning ul {
    margin: 10px 0 15px 20px;
    list-style: disc;
}

.quiz-warning li {
    margin-bottom: 8px;
}

/* Content Block Cards */
.content-block {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-large);
    margin-bottom: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--color-gray-lightest);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.content-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.content-block::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: var(--color-blue);
}

.content-block:nth-child(even) {
    background: #f8faff;
}

.content-block:nth-child(3n)::before {
    background: #ff5252;
    /* Red accent for variety */
}

.content-block:nth-child(3n+1)::before {
    background: #4caf50;
    /* Green accent for variety */
}

.content-block h2 {
    font-size: 24px;
    color: var(--color-gray-dark);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--color-gray-lightest);
    font-weight: 700;
}

/* Article Styles */
.article {
    line-height: 1.8;
}

.article p {
    margin-bottom: 20px;
}

.article table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.article td,
.article th {
    padding: 12px;
    border: 1px solid var(--color-gray-lightest);
}

/* Related Cars Section */
.related-cars,
.model-configurations {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--color-gray-lightest);
}

.related-cars__title {
    font-size: 28px;
    color: var(--color-gray-dark);
    margin-bottom: 30px;
    text-align: center;
}

.related-cars__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.related-car-card {
    background: var(--color-white);
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-small);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--color-gray-lightest);
}

.related-car-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
    border-color: var(--color-blue);
}

.related-car-card__image {
    height: 180px;
    overflow: hidden;
}

.related-car-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-car-card:hover .related-car-card__image img {
    transform: scale(1.05);
}

.related-car-card__content {
    padding: 20px;
}

.related-car-card h3 {
    font-size: 18px;
    color: var(--color-gray-dark);
    margin-bottom: 8px;
    line-height: 1.4;
}

.related-car-card p {
    font-size: 14px;
    color: var(--color-gray-light);
    margin-bottom: 15px;
}

.related-car-card__link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-blue);
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Responsive Related Cars */
@media (max-width: 992px) {
    .related-cars__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .related-cars__grid {
        grid-template-columns: 1fr;
    }
}

/* Alphabetical Index */
.alphabet-index {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
    padding: 20px;
    background: var(--bg-light-gray);
    border-radius: var(--radius-medium);
}

.alphabet-index__item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-gray-lightest);
    border-radius: var(--radius-small);
    font-weight: 700;
    color: var(--color-blue);
    text-decoration: none;
    transition: all 0.2s ease;
}

.alphabet-index__item:hover {
    background: var(--color-blue);
    color: var(--color-white);
    border-color: var(--color-blue);
}

.letter-section {
    margin-bottom: 50px;
}

.letter-section__title {
    font-size: 24px;
    color: var(--color-gray-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-blue);
    display: inline-block;
    min-width: 40px;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.models-grid .button--outline {
    width: 100%;
    justify-content: center;
    padding: 12px 15px;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 992px) {
    .car-hero {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .brands-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}