/* Reset et variables globales */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-black: #000000;
    --secondary-black: #1a1a1a;
    --tertiary-black: #2a2a2a;
    --primary-white: #ffffff;
    --secondary-white: #f5f5f5;
    --tertiary-white: #e0e0e0;
    --accent-gray: #666666;
    --light-gray: #999999;
    --border-gray: #333333;
    --gradient-primary: linear-gradient(135deg, #000000 0%, #2a2a2a 100%);
    --gradient-accent: linear-gradient(135deg, #333333 0%, #000000 100%);
    --shadow-light: 0 4px 20px rgba(255, 255, 255, 0.1);
    --shadow-heavy: 0 8px 40px rgba(255, 255, 255, 0.15);
}

body {
    font-family: 'Bricolage Grotesque', sans-serif;
    background-color: var(--primary-black);
    color: var(--primary-white);
    line-height: 1.6;
    overflow-x: hidden;
    overflow-y: auto;
}

/* Particles Background - Style Bean */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #000000 0%, #0a0a0a 50%, #000000 100%);
    overflow: hidden;
}

#particles-js canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-gray);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-white);
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--light-gray);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary-white);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: transparent;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 60%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 80vh;
}

/* Product Showcase */
.product-showcase {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-image-container {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}



/* Product Image */
.product-img {
    width: 100%;
    height: auto;
    max-width: 650px;
    max-height: 650px;
    object-fit: contain;
    background: transparent;
    z-index: 2;
    position: relative;
    transition: all 0.5s ease;
}

.product-img:hover {
    transform: scale(1.05) rotateY(5deg) rotateX(2deg);
}

/* Product Info */
.product-info {
    padding-left: 2rem;
}

.product-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.product-logo {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
}

.product-brand {
    font-family: 'Lemon Milk', sans-serif;
    font-size: 3.5rem;
    font-weight: bold;
    letter-spacing: 2px;
    color: var(--primary-white);
}

.product-text {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-white) 0%, var(--light-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-subtitle {
    font-size: 1.3rem;
    color: var(--light-gray);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.product-description {
    font-size: 1.1rem;
    color: var(--tertiary-white);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* Price and Action Container */
.price-and-action {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.product-price {
    margin-bottom: 0;
}

/* Product Stats */
.product-stats {
    margin-bottom: 2rem;
}

.stat-item {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.counter {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-white);
    background: linear-gradient(135deg, var(--primary-white) 0%, var(--light-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1rem;
    color: var(--light-gray);
    font-weight: 400;
}

@keyframes countUp {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.price-current {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-white);
    margin-right: 1rem;
}

.price-original {
    font-size: 1.5rem;
    color: var(--accent-gray);
    text-decoration: line-through;
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 0;
}

/* Back Arrow */
.back-arrow {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 1000;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-white);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.back-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateX(-2px);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.1);
}

.back-arrow svg {
    transition: transform 0.3s ease;
}

.back-arrow:hover svg {
    transform: translateX(-2px);
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-cta {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--secondary-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-white);
    border: 2px solid var(--border-gray);
}

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

.btn-cta {
    background: var(--gradient-accent);
    color: var(--primary-white);
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    box-shadow: var(--shadow-light);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--secondary-black);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 4rem;
    color: var(--primary-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--tertiary-black);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-gray);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-light);
    border-color: var(--accent-gray);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: 50%;
}

.feature-icon div {
    width: 40px;
    height: 40px;
    background: var(--primary-white);
    border-radius: 4px;
}

.icon-compatibility {
    border-radius: 8px;
}

.icon-lens {
    border-radius: 50%;
}

.icon-comfort {
    border-radius: 20px;
}

.icon-control {
    border-radius: 4px;
}

.feature-card h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-white);
}

.feature-card p {
    color: var(--light-gray);
    line-height: 1.6;
}

/* Specifications */
.specifications {
    padding: 6rem 0;
    background: var(--primary-black);
}

.spec-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.spec-text h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary-white);
}

.spec-list {
    space-y: 1rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-gray);
}

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

.spec-label {
    color: var(--light-gray);
    font-weight: 400;
}

.spec-value {
    color: var(--primary-white);
    font-weight: 600;
}

.spec-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.spec-diagram {
    position: relative;
    width: 300px;
    height: 200px;
}

.diagram-phone {
    position: absolute;
    width: 120px;
    height: 200px;
    background: var(--gradient-accent);
    border-radius: 20px;
    left: 50%;
    transform: translateX(-50%);
    border: 2px solid var(--tertiary-white);
}

.diagram-headset {
    position: absolute;
    width: 200px;
    height: 80px;
    background: var(--secondary-black);
    border-radius: 40px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid var(--tertiary-white);
    opacity: 0.8;
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: var(--gradient-primary);
    text-align: center;
}

.cta-content h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-white);
}

.cta-content p {
    font-size: 1.2rem;
    color: var(--light-gray);
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background: var(--secondary-black);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-gray);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary-white);
}

.footer-brand p {
    color: var(--light-gray);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.link-group h5 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-white);
}

.link-group a {
    display: block;
    color: var(--light-gray);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: var(--primary-white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-gray);
}

.footer-bottom p {
    color: var(--accent-gray);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .back-arrow {
        top: 1.5rem;
        left: 1.5rem;
        width: 44px;
        height: 44px;
    }

    .nav-menu {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 0.1rem;
        text-align: center;
        min-height: 80vh;
        justify-content: center;
    }

    .product-info {
        padding-left: 0;
    }

    .product-title {
        font-size: 2.2rem;
        margin-bottom: 0.8rem;
        gap: 15px;
        justify-content: center;
    }

    .product-logo {
        width: 40px;
        height: 40px;
    }

    .product-brand {
        font-size: 2.2rem;
    }

    .product-text {
        font-size: 2.2rem;
    }

    .product-subtitle {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }

    .product-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        line-height: 1.6;
    }

    .price-and-action {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
        justify-content: center;
    }

    .product-actions {
        margin-bottom: 0;
    }

    .btn-primary {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .product-image-container {
        width: 400px;
        height: 400px;
    }
}

@media (max-width: 480px) {
    .back-arrow {
        top: 1rem;
        left: 1rem;
        width: 40px;
        height: 40px;
    }

    .container {
        padding: 0 15px;
    }

    .hero {
        min-height: auto;
        padding-top: 60px;
        padding-bottom: 40px;
    }

    .hero-content {
        gap: 0.1rem;
        min-height: auto;
    }

    .product-title {
        font-size: 1.8rem;
        margin-bottom: 0.5rem;
        gap: 10px;
        justify-content: center;
    }

    .product-logo {
        width: 35px;
        height: 35px;
    }

    .product-brand {
        font-size: 1.8rem;
    }

    .product-text {
        font-size: 1.8rem;
    }

    .product-subtitle {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    .product-description {
        font-size: 0.9rem;
        margin-bottom: 1rem;
        line-height: 1.5;
    }

    .product-image-container {
        width: 280px;
        height: 280px;
    }

    .product-img {
        max-width: 280px;
        max-height: 280px;
    }

    .price-current {
        font-size: 2rem;
    }

    .btn-primary {
        padding: 0.7rem 1.2rem;
        font-size: 0.85rem;
        width: 100%;
        max-width: 200px;
    }

    .price-and-action {
        flex-direction: column;
        gap: 0.8rem;
        align-items: center;
        justify-content: center;
        width: 100%;
        padding: 0 10px;
    }

    .product-price {
        text-align: center;
        width: 100%;
    }

    .product-actions {
        width: 100%;
        display: flex;
        justify-content: center;
    }
}