:root {
    --black: #0a0a0a;
    --near-black: #141414;
    --dark: #1c1c1c;
    --grey: #2a2a2a;
    --light-grey: #8a8a8a;
    --white: #f5f5f5;
    --opc-yellow: #ffcc00;
    --opc-yellow-hover: #ffd633;
    --border: #2a2a2a;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Rajdhani', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Barlow Condensed', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    line-height: 1.05;
}

.accent, .hero__accent {
    color: var(--opc-yellow);
}

/* ---------- NAV ---------- */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav__inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--white);
}
.nav__mark {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--black);
    background: var(--opc-yellow);
    padding: 0.15rem 0.5rem;
    letter-spacing: 0.05em;
}
.nav__model {
    font-family: 'Barlow Condensed', sans-serif;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.15em;
    font-size: 0.95rem;
}
.nav__links {
    display: flex;
    gap: 2rem;
}
.nav__links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
}
.nav__links a:hover {
    color: var(--opc-yellow);
    border-bottom-color: var(--opc-yellow);
}

/* ---------- LANG SWITCH ---------- */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: 1.5rem;
    padding-left: 1.5rem;
    border-left: 1px solid var(--border);
}
.lang-switch__opt {
    background: transparent;
    border: 0;
    color: var(--light-grey);
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    letter-spacing: 0.15em;
    font-size: 0.85rem;
    padding: 0.25rem 0.15rem;
    cursor: pointer;
    transition: color 0.2s ease;
}
.lang-switch__opt:hover {
    color: var(--white);
}
.lang-switch__opt.is-active {
    color: var(--opc-yellow);
}
.lang-switch__sep {
    color: var(--border);
    font-size: 0.85rem;
    user-select: none;
}

/* ---------- HERO ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}
.hero__image {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 60%, #000 100%),
        url('images/hero.jpg') center/cover no-repeat;
    background-blend-mode: overlay;
    transform: scale(1.02);
}
.hero__overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10,10,10,0.4) 0%, rgba(10,10,10,0.7) 60%, var(--black) 100%),
        linear-gradient(90deg, rgba(10,10,10,0.85) 0%, rgba(10,10,10,0.2) 60%, transparent 100%);
}
.hero__content {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}
.hero__eyebrow {
    display: inline-block;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: var(--opc-yellow);
    border-left: 3px solid var(--opc-yellow);
    padding-left: 0.75rem;
    margin-bottom: 1.5rem;
}
.hero__title {
    font-size: clamp(3rem, 8vw, 6.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
}
.hero__sub {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--light-grey);
    margin-bottom: 2.5rem;
    max-width: 520px;
    font-weight: 400;
}
.hero__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    font-weight: 600;
    letter-spacing: 0.4em;
    font-size: 0.7rem;
    color: var(--light-grey);
    z-index: 2;
    animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 0.4; transform: translate(-50%, 0); }
    50% { opacity: 1; transform: translate(-50%, 8px); }
}

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    text-decoration: none;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.95rem;
    border: 2px solid transparent;
    transition: all 0.2s ease;
    cursor: pointer;
}
.btn--primary {
    background: var(--opc-yellow);
    color: var(--black);
    border-color: var(--opc-yellow);
}
.btn--primary:hover {
    background: transparent;
    color: var(--opc-yellow);
}
.btn--large {
    padding: 1.25rem 3rem;
    font-size: 1.15rem;
}

/* ---------- SECTIONS ---------- */
.section {
    padding: 7rem 0;
    background: var(--near-black);
}
.section--dark {
    background: var(--black);
}
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}
.container--narrow {
    max-width: 720px;
    text-align: center;
}
.section__head {
    margin-bottom: 4rem;
}
.section__head--center {
    text-align: center;
}
.section__kicker {
    display: inline-block;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-size: 0.75rem;
    color: var(--opc-yellow);
    margin-bottom: 1rem;
}
.section__title {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 800;
}

/* ---------- SPECS ---------- */
.specs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-bottom: 4rem;
}
.spec-card {
    background: var(--near-black);
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    transition: background 0.2s ease;
}
.spec-card:hover {
    background: var(--dark);
}
.spec-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 24px;
    height: 3px;
    background: var(--opc-yellow);
}
.spec-card__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--light-grey);
}
.spec-card__value {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1;
    color: var(--white);
    margin: 0.5rem 0 0.25rem;
}
.spec-card__value small {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light-grey);
    letter-spacing: 0.05em;
}
.spec-card__note {
    font-size: 0.9rem;
    color: var(--light-grey);
}

/* ---------- PARTS ---------- */
.parts {
    border-left: 3px solid var(--opc-yellow);
    padding: 1rem 0 1rem 2rem;
    max-width: 900px;
}
.parts__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--opc-yellow);
}
.parts__list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 0.6rem 2rem;
}
.parts__list li {
    position: relative;
    padding-left: 1.5rem;
    font-size: 1.05rem;
    color: var(--white);
}
.parts__list li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--opc-yellow);
    font-weight: 700;
    font-size: 1.2rem;
    line-height: 1;
}

/* ---------- BUILD ---------- */
.build {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.build__text p {
    font-size: 1.15rem;
    margin-bottom: 1.25rem;
    color: #d0d0d0;
}
.build__text em {
    color: var(--opc-yellow);
    font-style: normal;
    font-weight: 600;
}
.build__image {
    aspect-ratio: 4 / 3;
    background-color: var(--grey);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border: 1px solid var(--border);
    position: relative;
}
.build__image::after {
    content: 'Z20LEH';
    position: absolute;
    bottom: 1rem; right: 1rem;
    background: var(--opc-yellow);
    color: var(--black);
    padding: 0.35rem 0.75rem;
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    letter-spacing: 0.15em;
    font-size: 0.85rem;
}

/* ---------- GALLERY ---------- */
.gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 260px;
    gap: 1rem;
}
.gallery__item {
    background: var(--grey);
    background-size: cover;
    background-position: center;
    cursor: pointer;
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}
.gallery__item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 204, 0, 0.05), transparent 60%);
    z-index: 1;
}
.gallery__item::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
}
.gallery__item:hover::after {
    border-color: var(--opc-yellow);
}
.gallery__item--wide {
    grid-column: span 2;
}

/* ---------- CONTACT ---------- */
.contact__lead {
    font-size: 1.2rem;
    color: var(--light-grey);
    margin-bottom: 2.5rem;
}

/* ---------- FOOTER ---------- */
.footer {
    background: var(--black);
    padding: 2rem 0;
    border-top: 1px solid var(--border);
}
.footer__row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer__brand {
    font-family: 'Barlow Condensed', sans-serif;
    font-weight: 700;
    letter-spacing: 0.2em;
    font-size: 0.95rem;
}
.footer__note {
    font-size: 0.8rem;
    color: var(--light-grey);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
    .nav__links { gap: 1rem; }
    .nav__links a { font-size: 0.75rem; }
    .nav__model { display: none; }
    .lang-switch { margin-left: 0.75rem; padding-left: 0.75rem; }
    .build { grid-template-columns: 1fr; gap: 2rem; }
    .gallery { grid-template-columns: repeat(2, 1fr); }
    .gallery__item--wide { grid-column: span 2; }
    .section { padding: 5rem 0; }
    .section__head { margin-bottom: 2.5rem; }
}

@media (max-width: 560px) {
    .nav__inner { padding: 0.75rem 1rem; }
    .container { padding: 0 1rem; }
    .gallery { grid-template-columns: 1fr; grid-auto-rows: 220px; }
    .gallery__item--wide { grid-column: span 1; }
    .parts { padding-left: 1.25rem; }
    .parts__list { grid-template-columns: 1fr; }
}