:root {
    --black: #0E0F12;
    --dark-surface: #16181F;
    --white: #FAFAFC;
    --light-grey: #F2F2F6;
    --medium-grey: #E2E2E9;
    --accent: #8E8E9A;
    --gold: #C5A880;
    --gold-glow: rgba(197, 168, 128, 0.25);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    --container-max-width: 1240px;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, .logo, .mobile-logo {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
}

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Portfolio Back Button Pill */
.portfolio-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 30px;
    background: rgba(197, 168, 128, 0.12);
    border: 1px solid rgba(197, 168, 128, 0.35);
    color: #9E7D53 !important;
    font-weight: 600 !important;
    font-size: 0.82rem !important;
    transition: var(--transition);
}

.portfolio-back-btn:hover {
    background: var(--gold);
    color: white !important;
    transform: translateX(-3px);
}

/* Header */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 22px 0;
    transition: var(--transition);
    background-color: transparent;
}

#main-header.scrolled {
    background-color: rgba(250, 250, 252, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 14px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid var(--medium-grey);
}

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

.logo a {
    font-size: 1.4rem;
    letter-spacing: 2.5px;
    color: var(--black);
}

.desktop-nav ul {
    display: flex;
    align-items: center;
    gap: 28px;
}

.desktop-nav ul li a {
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-weight: 500;
    color: var(--black);
}

.desktop-nav ul li a:hover {
    color: var(--gold);
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    padding: 6px;
    color: var(--black);
    transition: var(--transition);
}

.icon-btn:hover {
    color: var(--gold);
}

#cart-count {
    position: absolute;
    top: -2px;
    right: -4px;
    background-color: var(--black);
    color: var(--white);
    font-size: 0.68rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--black);
    transition: var(--transition);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
    position: fixed;
    top: 0;
    left: -100%;
    width: 320px;
    max-width: 85%;
    height: 100vh;
    background-color: var(--black);
    color: var(--white);
    z-index: 2000;
    padding: 3rem 2rem;
    transition: var(--transition);
    box-shadow: 10px 0 30px rgba(0,0,0,0.3);
}

.mobile-nav-drawer.active {
    left: 0;
}

.mobile-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 2.2rem;
    cursor: pointer;
}

.mobile-logo {
    font-size: 1.4rem;
    letter-spacing: 2px;
    margin-bottom: 3rem;
    color: var(--gold);
}

.mobile-nav-drawer ul {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.mobile-nav-drawer ul li a {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: white;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 650px;
    display: flex;
    align-items: center;
    position: relative;
    color: var(--white);
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(14,15,18,0.5) 0%, rgba(14,15,18,0.75) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 750px;
}

.hero-tag {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border-radius: 30px;
    background: rgba(197, 168, 128, 0.2);
    border: 1px solid var(--gold);
    color: var(--gold);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-size: clamp(3rem, 7vw, 5.5rem);
    line-height: 1.05;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.hero-content p {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--medium-grey);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 1.2rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 16px 36px;
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--white);
    color: var(--black);
}

.btn-primary:hover {
    background-color: var(--gold);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.4);
    color: var(--white);
}

.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,0.1);
}

.btn-dark {
    background-color: var(--black);
    color: var(--white);
}

.btn-dark:hover {
    background-color: var(--gold);
    color: var(--black);
}

.full-width {
    width: 100%;
}

/* Featured Categories */
.featured-categories {
    padding: 90px 0 60px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.category-card {
    position: relative;
    height: 420px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
}

.category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.category-card:hover img {
    transform: scale(1.06);
}

.category-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 30px;
    background: linear-gradient(0deg, rgba(14,15,18,0.85) 0%, rgba(14,15,18,0) 100%);
    color: white;
}

.category-info h3 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.link-underlined {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
    color: var(--gold);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

/* Shop / Collection Section */
.best-sellers {
    padding: 60px 0 100px;
}

.shop-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.sub-heading {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gold);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 3rem);
    line-height: 1.1;
}

.filter-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 30px;
    border: 1px solid var(--medium-grey);
    background: transparent;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 35px;
}

.product-item {
    transition: var(--transition);
}

.product-image-wrapper {
    position: relative;
    height: 340px;
    background-color: var(--light-grey);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
}

.product-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.5s ease, transform 0.6s ease;
}

.product-image-wrapper .hover-img {
    opacity: 0;
}

.product-item:hover .product-image-wrapper .hover-img {
    opacity: 1;
}

.product-item:hover .product-image-wrapper img {
    transform: scale(1.04);
}

.product-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background-color: var(--black);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
    z-index: 2;
}

.product-badge.premium {
    background-color: var(--gold);
    color: var(--black);
}

.quick-add-btn {
    position: absolute;
    bottom: -50px;
    left: 15px;
    right: 15px;
    background-color: rgba(14, 15, 18, 0.9);
    backdrop-filter: blur(10px);
    color: white;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    z-index: 3;
}

.product-item:hover .quick-add-btn {
    bottom: 15px;
}

.quick-add-btn:hover {
    background-color: var(--gold);
    color: var(--black);
}

.product-info h4 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.specs-tag {
    font-size: 0.82rem;
    color: var(--accent);
    margin-bottom: 6px;
}

.price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--black);
}

/* Engineering Specs Section */
.engineering-specs {
    padding: 90px 0;
    background-color: var(--black);
    color: var(--white);
}

.specs-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 4rem;
}

.specs-header h2 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.spec-card {
    background: var(--dark-surface);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: var(--transition);
}

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

.spec-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: rgba(197, 168, 128, 0.12);
    color: var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
}

.spec-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.spec-card p {
    color: var(--accent);
    font-size: 0.95rem;
}

/* Brand Mission */
.brand-mission {
    padding: 100px 0;
    text-align: center;
    background-color: var(--light-grey);
}

.mission-content {
    max-width: 800px;
    margin: 0 auto;
}

.mission-content h2 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
}

.mission-content p {
    font-size: 1.15rem;
    color: #4A4A5A;
    line-height: 1.8;
}

/* Newsletter */
.newsletter {
    padding: 80px 0;
}

.newsletter-inner {
    background-color: var(--black);
    color: var(--white);
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    max-width: 850px;
    margin: 0 auto;
}

.newsletter-inner h3 {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
}

.newsletter-inner p {
    color: var(--accent);
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 14px 20px;
    border-radius: 4px;
    border: none;
    font-size: 0.95rem;
}

.newsletter-form input:focus {
    outline: 2px solid var(--gold);
}

/* Cart Drawer */
.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.cart-overlay.active {
    opacity: 1;
    visibility: visible;
}

.cart-drawer-content {
    position: absolute;
    top: 0;
    right: -450px;
    width: 420px;
    max-width: 100%;
    height: 100%;
    background-color: var(--white);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    box-shadow: -10px 0 30px rgba(0,0,0,0.2);
}

.cart-overlay.active .cart-drawer-content {
    right: 0;
}

.cart-header {
    padding: 24px;
    border-bottom: 1px solid var(--medium-grey);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-drawer {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
}

.cart-items {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.empty-msg {
    color: var(--accent);
    text-align: center;
    margin-top: 3rem;
}

.cart-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--light-grey);
}

.cart-item-info h5 {
    font-size: 1rem;
}

.cart-item-info span {
    font-size: 0.85rem;
    color: var(--accent);
}

.cart-item-remove {
    background: none;
    border: none;
    color: #E53935;
    cursor: pointer;
    font-size: 0.85rem;
}

.cart-footer {
    padding: 24px;
    border-top: 1px solid var(--medium-grey);
    background-color: var(--light-grey);
}

.cart-subtotal {
    display: flex;
    justify-content: space-between;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--black);
    color: var(--white);
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 4000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-left: 4px solid var(--gold);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Footer */
footer {
    background-color: var(--black);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-col h5 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--gold);
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--accent);
    font-size: 0.9rem;
}

.footer-col ul li a:hover {
    color: var(--white);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-links a {
    color: var(--accent);
    font-size: 0.9rem;
}

.social-links a:hover {
    color: var(--gold);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    color: var(--accent);
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 15px;
}

.legal-links {
    display: flex;
    gap: 20px;
}

.legal-links a {
    color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    .mobile-menu-toggle {
        display: flex;
    }
    .hero-content h1 {
        font-size: 3rem;
    }
    .newsletter-form {
        flex-direction: column;
    }
}