/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --rgb-red: #ef4444;
    --rgb-blue: #3b82f6;
    --rgb-purple: #8b5cf6;
    --rgb-green: #10b981;
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-accent: #e4e4e7;
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-rgb: linear-gradient(45deg, var(--rgb-red), var(--rgb-blue), var(--rgb-purple));
    --shadow-primary: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-large: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

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

/* Typography */
.section__title {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-rgb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo .logo-text {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--gradient-rgb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav__link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav__link:hover,
.nav__link.active-link {
    color: var(--primary-color);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav__link:hover::after,
.nav__link.active-link::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    min-height: 70vh;
}

.hero__content {
    animation: fadeInUp 1s ease-out;
}

.hero__title {
    font-family: 'Orbitron', monospace;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-rgb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero__button {
    display: inline-block;
    padding: 15px 30px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-primary);
    position: relative;
    overflow: hidden;
}

.hero__button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.hero__button:hover::before {
    left: 100%;
}

.hero__button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

.hero__image {
    animation: fadeInRight 1s ease-out;
}

.hero__image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-large);
}

.hero__wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.hero__wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 60px;
}

.hero__wave .shape-fill {
    fill: var(--bg-secondary);
}

/* Products Section */
.products {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.products__header {
    margin-bottom: 3rem;
}

.products__container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
}

/* Filters */
.filters {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.filters__title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.filter__group {
    margin-bottom: 2rem;
}

.filter__group h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-accent);
}

.filter__item {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter__item:hover {
    color: var(--primary-color);
}

.filter__checkbox {
    display: none;
}

.filter__checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-secondary);
    border-radius: 4px;
    margin-right: 0.8rem;
    position: relative;
    transition: var(--transition);
}

.filter__checkbox:checked + .filter__checkmark {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
}

.filter__checkbox:checked + .filter__checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.price__range {
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: 8px;
    text-align: center;
    color: var(--text-secondary);
}

/* Product Grid */
.products__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product__card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.product__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-large);
}

.product__image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.product__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product__card:hover .product__image img {
    transform: scale(1.1);
}

.product__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product__card:hover .product__overlay {
    opacity: 1;
}

.product__button {
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.product__button:hover {
    transform: scale(1.05);
}

.product__info {
    padding: 1.5rem;
}

.product__name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.product__price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-color);
}

/* Promo Section */
.promo {
    padding: 80px 0;
    background: var(--bg-primary);
    position: relative;
}

.promo__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.promo__title {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-rgb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.promo__description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.promo__timer {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.timer__item {
    background: var(--bg-card);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    min-width: 80px;
}

.timer__number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Orbitron', monospace;
}

.timer__text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.promo__button {
    display: inline-block;
    padding: 15px 30px;
    background: var(--gradient-rgb);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.promo__image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-large);
}

/* About Section */
.about {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.about__container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about__description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

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

.feature__item {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.feature__item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-large);
}

.feature__icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature__item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature__item p {
    color: var(--text-secondary);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: var(--bg-primary);
}

.contact__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact__form {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--border-radius);
}

.form__group {
    margin-bottom: 1.5rem;
}

.form__input {
    width: 100%;
    padding: 15px;
    background: var(--bg-primary);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form__input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

.form__button {
    width: 100%;
    padding: 15px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.form__button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

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

.contact__item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact__item:hover {
    transform: translateX(10px);
}

.contact__icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
}

.contact__item h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact__item p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 60px 0 20px;
    border-top: 1px solid var(--bg-card);
}

.footer__container {
    text-align: center;
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer__logo .logo-text {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--gradient-rgb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    display: block;
}

.footer__logo p {
    color: var(--text-secondary);
}

.footer__links h3,
.footer__social h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer__links ul {
    list-style: none;
}

.footer__links li {
    margin-bottom: 0.5rem;
}

.footer__links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer__links a:hover {
    color: var(--primary-color);
}

.social__links {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.social__link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social__link:hover {
    color: var(--primary-color);
}

.footer__bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--bg-card);
    color: var(--text-secondary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Responsive Design */
@media screen and (max-width: 968px) {
    .section__title {
        font-size: 2rem;
    }

    .hero__container,
    .promo__container,
    .contact__container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .products__container {
        grid-template-columns: 1fr;
    }

    .filters {
        order: 2;
        position: static;
    }

    .products__grid {
        order: 1;
    }
}

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-primary);
        padding: 2rem;
        transition: var(--transition);
    }

    .nav__menu.show-menu {
        left: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: 2rem;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__title {
        font-size: 2rem;
    }

    .promo__timer {
        flex-wrap: wrap;
        justify-content: center;
    }

    .about__features {
        grid-template-columns: 1fr;
    }

    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social__links {
        justify-content: center;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero__title {
        font-size: 1.8rem;
    }

    .products__grid {
        grid-template-columns: 1fr;
    }

    .promo__title {
        font-size: 2rem;
    }
}