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

:root {
    --primary-dark: #000000;
    --secondary-dark: #0a0a0a;
    --tertiary-dark: #141414;
    --card-dark: #1a1a1a;
    --border-dark: #2a2a2a;
    --border-light: #333333;
    
    --primary-white: #ffffff;
    --secondary-white: #f5f5f5;
    --accent-white: #e0e0e0;
    --white-glow: rgba(255, 255, 255, 0.3);
    
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #a0a0a0;
    
    --gradient-white: linear-gradient(135deg, #ffffff 0%, #f0f0f0 50%, #e8e8e8 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #141414 100%);
    --gradient-card: linear-gradient(135deg, #1a1a1a 0%, #252525 100%);
    
    --shadow-glow: 0 25px 50px rgba(255, 255, 255, 0.2);
    --shadow-card: 0 15px 35px rgba(0, 0, 0, 0.4);
    --blur-backdrop: blur(20px);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: var(--blur-backdrop);
    border-bottom: 1px solid var(--border-dark);
    transition: all 0.4s ease;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: var(--shadow-card);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo i {
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-size: 2rem;
    filter: drop-shadow(0 0 15px var(--white-glow));
}

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

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.8rem 0;
    font-size: 1.05rem;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-white);
    transition: width 0.4s ease;
}

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

/* Hero Section */
.hero {
    padding: 12rem 2rem 8rem;
    text-align: center;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    top: -200px;
    left: -200px;
    animation: floatOrb 20s ease-in-out infinite;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    bottom: -150px;
    right: -150px;
    animation: floatOrb 25s ease-in-out infinite reverse;
    pointer-events: none;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -50px) scale(1.1); }
    66% { transform: translate(-30px, 30px) scale(0.9); }
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 900;
    margin-bottom: 2rem;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 10px 40px var(--white-glow);
    animation: fadeInUp 1s ease-out forwards;
    opacity: 0;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.2s forwards;
    opacity: 0;
    font-weight: 400;
    line-height: 1.8;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.4s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    0% { 
        opacity: 0;
        transform: translateY(40px);
    }
    100% { 
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-item {
    text-align: center;
    padding: 2.5rem 2rem;
    background: rgba(26, 26, 26, 0.5);
    border-radius: 20px;
    border: 1px solid var(--border-dark);
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-white);
    transform: scaleX(0);
    transition: transform 0.5s ease;
}

.stat-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-white);
    background: rgba(26, 26, 26, 0.8);
}

.stat-item:hover::before {
    transform: scaleX(1);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: block;
    margin-bottom: 1rem;
    line-height: 1;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
}

/* About Section */
.about-section {
    padding: 8rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    background: var(--primary-dark);
}

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

.about-video {
    width: 100%;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 20px;
    border: 1px solid var(--border-dark);
    box-shadow: var(--shadow-card);
    transition: all 0.5s ease;
}

.video-wrapper:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: var(--border-light);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.about-text p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-align: left;
}

/* Products Section */
.products-section {
    padding: 8rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    background: var(--primary-dark);
}

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

.section-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: var(--gradient-white);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    font-weight: 400;
    line-height: 1.8;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.product-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-dark);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    opacity: 1;
    transform: translateY(0);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-white);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.product-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--shadow-glow);
    border-color: var(--border-light);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-image-wrapper {
    width: 100%;
    height: 300px;
    overflow: hidden;
    background: var(--secondary-dark);
    position: relative;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover .product-image {
    transform: scale(1.08);
    filter: brightness(1.15);
}

.product-content {
    padding: 2.5rem;
}

.product-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.01em;
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: 1.8rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

.product-features {
    list-style: none;
    margin-bottom: 2.5rem;
}

.product-features li {
    color: var(--text-secondary);
    font-size: 0.98rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.3s ease;
}

.product-features li i {
    color: var(--primary-white);
    font-size: 1rem;
    filter: drop-shadow(0 0 8px var(--white-glow));
    flex-shrink: 0;
}

.product-features li:hover {
    color: var(--text-primary);
    transform: translateX(5px);
}

.price-info {
    margin-bottom: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-dark);
}

.price-starting {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 0.6rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.price-display {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    font-size: 1.05rem;
    width: 100%;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: var(--gradient-white);
    color: var(--primary-dark);
    border: 2px solid transparent;
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 45px rgba(255, 255, 255, 0.35);
    filter: brightness(1.1);
}

/* Features Section */
.features-section {
    padding: 8rem 2rem;
    background: var(--secondary-dark);
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-dark);
    border-radius: 24px;
    padding: 3rem;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-white);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-glow);
    border-color: var(--border-light);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 4rem;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1.8rem;
    transition: all 0.4s ease;
    filter: drop-shadow(0 5px 20px var(--white-glow));
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
}

.feature-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: var(--blur-backdrop);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--gradient-card);
    border: 1px solid var(--border-dark);
    border-radius: 28px;
    max-width: 1200px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-glow);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    padding: 3rem 3rem 2rem;
    border-bottom: 1px solid var(--border-dark);
    position: relative;
}

.modal-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--card-dark);
    border: 1px solid var(--border-dark);
    color: var(--text-muted);
    font-size: 1.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 45px;
    height: 45px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 300;
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--secondary-dark);
    border-color: var(--accent-white);
    transform: rotate(90deg);
}

.modal-title {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
}

.modal-body {
    padding: 3rem;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: start;
}

.modal-image-section {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--secondary-dark);
    border-radius: 20px;
    padding: 2rem;
    height: 300px;
    border: 1px solid var(--border-dark);
    position: sticky;
    top: 3rem;
}

.modal-image {
    width: 100%;
    max-width: 250px;
    height: auto;
    object-fit: contain;
    border-radius: 16px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.4));
}

.pricing-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.pricing-option {
    background: var(--secondary-dark);
    border: 2px solid var(--border-dark);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pricing-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--gradient-white);
    transform: scaleY(0);
    transition: transform 0.4s ease;
    border-radius: 16px 0 0 16px;
}

.pricing-option:hover {
    border-color: var(--border-light);
    background: var(--card-dark);
    transform: translateX(5px);
}

.pricing-option:hover::before {
    transform: scaleY(1);
}

.pricing-option.selected {
    border-color: var(--primary-white);
    background: var(--card-dark);
    box-shadow: 0 0 0 2px var(--primary-white);
}

.pricing-option.selected::before {
    transform: scaleY(1);
}

.pricing-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex: 1;
}

.pricing-duration {
    font-size: 1.1rem;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.4rem;
}

.pricing-description {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.pricing-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.pricing-price {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--text-primary);
}

.pricing-price::before {
    content: '$';
    font-size: 0.9rem;
    margin-right: 0.2rem;
    color: var(--primary-white);
}

.purchase-section {
    border-top: 1px solid var(--border-dark);
    padding-top: 2rem;
    text-align: center;
}

.purchase-message {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}

.purchase-instruction {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.sellauth-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.3rem 3rem;
    border: none;
    border-radius: 16px;
    font-weight: 800;
    font-size: 1.1rem;
    width: 100%;
    background: var(--gradient-white);
    color: var(--primary-dark);
    border: 2px solid transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sellauth-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px rgba(255, 255, 255, 0.4);
    filter: brightness(1.15);
}

.sellauth-button .icon {
    width: 22px;
    height: 22px;
    margin-left: 1rem;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    border-top: 1px solid var(--border-dark);
    padding: 5rem 2rem 3rem;
    text-align: center;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 3.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 1.05rem;
}

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

.footer-copyright {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
}

/* Alerts */
.alert {
    padding: 1.5rem;
    border-radius: 14px;
    margin: 2rem 0;
    display: none;
    border: 1px solid;
    font-weight: 600;
}

.alert.success {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    color: #ffffff;
}

.alert.error {
    background: rgba(128, 128, 128, 0.1);
    border-color: #808080;
    color: #808080;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        padding: 10rem 2rem 6rem;
    }
    
    .hero-stats {
        max-width: 600px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 2.5rem;
    }
    
    .modal-body {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .modal-image-section {
        position: relative;
        top: 0;
        height: 250px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 8rem 1.5rem 4rem;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .section-title {
        font-size: 2.8rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
        border-radius: 24px;
    }

    .modal-header {
        padding: 2rem 2rem 1.5rem;
    }

    .modal-body {
        padding: 2rem;
    }

    .pricing-option {
        padding: 1.2rem 1.5rem;
        flex-direction: column;
        align-items: flex-start;
    }

    .pricing-right {
        align-items: flex-start;
        margin-top: 0.8rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-card {
        padding: 2.5rem 2rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 1.2rem 1.5rem;
    }
    
    .nav-logo {
        font-size: 1.5rem;
    }

    .stat-item {
        padding: 2rem 1.5rem;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .product-content {
        padding: 2rem;
    }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-white);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-white);
}