/* BYD Premium Dealership - Mockup Styles */

:root {
    --primary-black: #0a0a0a;
    --soft-black: #1a1a1a;
    --charcoal: #2d2d2d;
    --silver: #c0c0c0;
    --platinum: #e5e5e5;
    --pure-white: #ffffff;
    --accent-red: #e63946;
    --accent-gold: #d4af37;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'SF Pro Text', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--primary-black);
    color: var(--pure-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 300;
    letter-spacing: -0.02em;
}

/* Premium Navigation */
.nav-premium {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    padding: 1.5rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.3);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.nav-premium.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 1rem 4rem;
}

.nav-logo img {
    height: 32px;
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    color: var(--pure-white);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.8;
    transition: var(--transition-smooth);
}

.nav-links a:hover {
    opacity: 1;
}

.nav-cta {
    padding: 0.75rem 2rem;
    background: transparent;
    border: 1px solid var(--pure-white);
    color: var(--pure-white);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.nav-cta:hover {
    background: var(--pure-white);
    color: var(--primary-black);
}

/* Hero Section - Full Screen */
.hero-premium {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-black) 0%, var(--soft-black) 50%, var(--charcoal) 100%);
}

.hero-gradient-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(214, 175, 55, 0.05) 0%, transparent 60%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1000px;
    padding: 0 1.5rem;
    margin-top: 60px;
}

.hero-tagline {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-bottom: 0.75rem;
    font-weight: 300;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 200;
    line-height: 1.1;
    margin-bottom: 0.5rem;
    background: linear-gradient(180deg, var(--pure-white) 0%, var(--silver) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1rem;
    font-weight: 300;
    color: var(--silver);
    margin-bottom: 1.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.hero-car-container {
    position: relative;
    margin-top: 1rem;
}

.hero-car {
    width: 450px;
    height: 300px;
    max-width: 85%;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.5));
    animation: float-subtle 6s ease-in-out infinite;
}

@keyframes float-subtle {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-car-reflection {
    position: absolute;
    bottom: -60%;
    left: 50%;
    transform: translateX(-50%) scaleY(-1);
    max-width: 90%;
    opacity: 0.15;
    filter: blur(3px);
    mask-image: linear-gradient(to bottom, transparent 0%, black 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 100%);
}

.hero-specs {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 1.5rem;
}

.spec-item {
    text-align: center;
}

.spec-value {
    font-size: 1.75rem;
    font-weight: 200;
    color: var(--pure-white);
    line-height: 1;
}

.spec-value span {
    font-size: 0.8rem;
    color: var(--silver);
}

.spec-label {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--silver);
    margin-top: 0.3rem;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--silver);
}

.scroll-line {
    width: 1px;
    height: 25px;
    background: linear-gradient(to bottom, var(--silver), transparent);
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* Models Section */
.models-section {
    padding: 8rem 4rem;
    background: var(--primary-black);
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-label {
    font-size: 0.8rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 200;
    color: var(--pure-white);
}

/* Vehicle Cards - Premium Style */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.model-card {
    position: relative;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.model-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.model-card:hover .model-image img {
    transform: scale(1.05);
}

.model-badge {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    padding: 0.5rem 1rem;
    background: var(--accent-red);
    color: var(--pure-white);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 4px;
    z-index: 2;
}

.model-badge.new {
    background: var(--accent-gold);
    color: var(--primary-black);
}

.model-image {
    position: relative;
    padding: 3rem 2rem 2rem;
    background: linear-gradient(180deg, var(--charcoal) 0%, var(--soft-black) 100%);
    overflow: hidden;
}

.model-image img {
    width: 100%;
    height: 220px;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.model-info {
    padding: 2rem;
}

.model-category {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--silver);
    margin-bottom: 0.5rem;
}

.model-name {
    font-size: 1.75rem;
    font-weight: 300;
    color: var(--pure-white);
    margin-bottom: 1rem;
}

.model-price {
    font-size: 1.1rem;
    color: var(--silver);
    margin-bottom: 1.5rem;
}

.model-price strong {
    color: var(--pure-white);
    font-weight: 400;
}

.model-features {
    display: flex;
    gap: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.feature {
    text-align: center;
    flex: 1;
}

.feature-value {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--pure-white);
}

.feature-label {
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--silver);
    margin-top: 0.25rem;
}

.model-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-primary-premium {
    flex: 1;
    padding: 1rem;
    background: var(--pure-white);
    color: var(--primary-black);
    border: none;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
    text-decoration: none;
}

.btn-primary-premium:hover {
    background: var(--platinum);
}

.btn-secondary-premium {
    flex: 1;
    padding: 1rem;
    background: transparent;
    color: var(--pure-white);
    border: 1px solid var(--glass-border);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
    text-decoration: none;
}

.btn-secondary-premium:hover {
    border-color: var(--pure-white);
}

/* Experience Section */
.experience-section {
    padding: 8rem 4rem;
    background: linear-gradient(180deg, var(--primary-black) 0%, var(--soft-black) 100%);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.experience-card {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: var(--transition-smooth);
}

.experience-card:hover {
    border-color: var(--accent-gold);
    transform: translateY(-5px);
}

.experience-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent-gold);
    border-radius: 50%;
    color: var(--accent-gold);
    font-size: 1.5rem;
}

.experience-title {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--pure-white);
    margin-bottom: 0.75rem;
}

.experience-desc {
    font-size: 0.85rem;
    color: var(--silver);
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 10rem 4rem;
    background: var(--soft-black);
    position: relative;
    overflow: hidden;
}

.cta-bg-image {
    position: absolute;
    inset: 0;
    opacity: 0.1;
    background-size: cover;
    background-position: center;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 200;
    color: var(--pure-white);
    margin-bottom: 1.5rem;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: var(--silver);
    margin-bottom: 3rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-cta-primary {
    padding: 1.25rem 3rem;
    background: var(--accent-gold);
    color: var(--primary-black);
    border: none;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
}

.btn-cta-primary:hover {
    background: #e5c048;
    transform: translateY(-2px);
}

.btn-cta-secondary {
    padding: 1.25rem 3rem;
    background: transparent;
    color: var(--pure-white);
    border: 1px solid var(--pure-white);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-cta-secondary:hover {
    background: var(--pure-white);
    color: var(--primary-black);
}

/* Advisor Section */
.advisor-section {
    padding: 6rem 4rem;
    background: var(--primary-black);
}

.advisor-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 4rem;
    align-items: center;
}

.advisor-image {
    position: relative;
}

.advisor-image img {
    width: 100%;
    border-radius: 16px;
    filter: grayscale(20%);
}

.advisor-badge {
    position: absolute;
    bottom: -1rem;
    right: -1rem;
    padding: 1rem 1.5rem;
    background: var(--accent-gold);
    color: var(--primary-black);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 500;
}

.advisor-info h3 {
    font-size: 2rem;
    font-weight: 300;
    color: var(--pure-white);
    margin-bottom: 0.5rem;
}

.advisor-role {
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
}

.advisor-bio {
    font-size: 1rem;
    color: var(--silver);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.advisor-contact {
    display: flex;
    gap: 1rem;
}

/* Footer Premium */
.footer-premium {
    padding: 4rem;
    background: var(--soft-black);
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo img {
    height: 28px;
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.footer-links a {
    color: var(--silver);
    text-decoration: none;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--pure-white);
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--silver);
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 1024px) {
    .nav-premium {
        padding: 1rem 2rem;
    }

    .nav-links {
        display: none;
    }

    .nav-cta {
        display: none;
    }

    .models-section {
        padding: 4rem 2rem;
    }

    .models-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .experience-section {
        padding: 4rem 2rem;
    }

    .experience-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cta-section {
        padding: 6rem 2rem;
    }

    .advisor-section {
        padding: 4rem 2rem;
    }

    .advisor-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .advisor-image {
        max-width: 280px;
        margin: 0 auto;
    }

    .advisor-contact {
        justify-content: center;
        flex-wrap: wrap;
    }

    .footer-premium {
        padding: 3rem 2rem;
    }
}

@media (max-width: 768px) {
    .hero-content {
        padding: 0 1rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 0.5rem;
    }

    .hero-specs {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1.5rem;
        justify-content: center;
        margin-top: 2rem;
    }

    .spec-item {
        min-width: 80px;
    }

    .spec-value {
        font-size: 1.8rem;
    }

    .spec-label {
        font-size: 0.65rem;
    }

    .models-section {
        padding: 3rem 1rem;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .model-info {
        padding: 1.5rem;
    }

    .model-features {
        gap: 1rem;
    }

    .model-actions {
        flex-direction: column;
        gap: 0.75rem;
    }

    .experience-section {
        padding: 3rem 1rem;
    }

    .experience-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .experience-card {
        padding: 2rem 1.5rem;
    }

    .cta-section {
        padding: 4rem 1.5rem;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
    }

    .btn-cta-primary,
    .btn-cta-secondary {
        width: 100%;
        justify-content: center;
    }

    .advisor-section {
        padding: 3rem 1.5rem;
    }

    .advisor-info h3 {
        font-size: 1.5rem;
    }

    .advisor-bio {
        font-size: 0.9rem;
    }

    .advisor-contact {
        flex-direction: column;
        gap: 0.75rem;
    }

    .advisor-contact a {
        width: 100%;
        justify-content: center;
    }

    .footer-premium {
        padding: 2rem 1rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-tagline {
        font-size: 0.75rem;
        letter-spacing: 0.2em;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .hero-car {
        width: 100%;
        height: 280px;
        max-width: 100%;
    }

    .hero-specs {
        gap: 1rem;
    }

    .spec-value {
        font-size: 1.5rem;
    }

    .carousel-dots {
        bottom: 3rem;
    }

    .scroll-indicator {
        bottom: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .model-image {
        padding: 2rem 1rem 1rem;
    }

    .model-image img {
        height: 160px;
    }

    .feature-value {
        font-size: 0.95rem;
    }

    .feature-label {
        font-size: 0.6rem;
    }
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--pure-white);
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 1001;
    padding: 0.5rem;
}

@media (max-width: 1024px) {
    .mobile-menu-btn {
        display: block;
    }

    /* Mobile Navigation Panel */
    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        padding: 5rem 2rem 2rem;
        gap: 0;
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.5);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        border-bottom: 1px solid var(--glass-border);
    }

    .nav-links a {
        display: block;
        padding: 1.25rem 0;
        font-size: 1rem;
        opacity: 1;
    }

    .nav-cta {
        display: block;
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        margin-top: auto;
        padding: 1rem 2rem;
        text-align: center;
        background: var(--accent-gold);
        color: var(--primary-black);
        border: none;
        transition: right 0.3s ease;
        z-index: 1001;
    }

    .nav-cta.active {
        right: 0;
        top: auto;
        bottom: 2rem;
        width: calc(280px - 4rem);
        right: 2rem;
    }

    /* Mobile Menu Overlay */
    .mobile-menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }

    .mobile-menu-overlay.active {
        display: block;
    }
}

/* ========== HERO CAROUSEL ========== */
.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
}

.carousel-slide .hero-content {
    transform: translateY(30px);
    opacity: 0;
    transition: transform 0.6s ease 0.3s, opacity 0.6s ease 0.3s;
}

.carousel-slide.active .hero-content {
    transform: translateY(0);
    opacity: 1;
}

.carousel-slide .hero-car {
    transform: translateX(50px);
    opacity: 0;
    transition: transform 0.8s ease 0.4s, opacity 0.8s ease 0.4s;
}

.carousel-slide.active .hero-car {
    transform: translateX(0);
    opacity: 1;
}

/* Carousel Navigation Dots */
.carousel-dots {
    position: absolute;
    bottom: 4rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 10;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.5);
}

.carousel-dot.active {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    transform: scale(1.2);
}

/* Carousel Arrow Navigation */
.carousel-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 10;
    pointer-events: none;
}

.carousel-arrow {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--pure-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    pointer-events: auto;
    backdrop-filter: blur(10px);
}

.carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.carousel-arrow i {
    font-size: 1.2rem;
}

/* Progress Bar */
.carousel-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.1);
}

.carousel-progress-bar {
    height: 100%;
    background: var(--accent-gold);
    width: 0%;
    transition: width 0.1s linear;
}

/* Model Label in Carousel */
.carousel-model-label {
    position: absolute;
    top: 50%;
    right: 4rem;
    transform: translateY(-50%) rotate(-90deg);
    transform-origin: right center;
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--silver);
    opacity: 0.5;
}

/* Responsive Carousel */
@media (max-width: 768px) {
    .carousel-arrows {
        display: none;
    }

    .carousel-dots {
        bottom: 2.5rem;
    }

    .carousel-model-label {
        display: none;
    }
}