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

:root {
    --black: #000000;
    --blue: #007AFF;
    --gray: #F2F2F2;
    --red: #FF3B30;
    --white: #FFFFFF;
    --dark-gray: #1C1C1E;
    --medium-gray: #8E8E93;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Roboto', sans-serif;
    background-color: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Cookie Notice */
.cookie-notice {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    color: var(--white);
    padding: 20px;
    z-index: 10000;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.cookie-notice.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cookie-content p {
    flex: 1;
    min-width: 250px;
}

.cookie-content a {
    color: var(--blue);
    text-decoration: none;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar {
    padding: 15px 0;
}

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

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: -0.5px;
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--black);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu li a {
    color: var(--black);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    font-size: 16px;
}

.nav-menu li a:hover {
    color: var(--blue);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--black) 0%, var(--dark-gray) 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 122, 255, 0.03) 2px, rgba(0, 122, 255, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 122, 255, 0.03) 2px, rgba(0, 122, 255, 0.03) 4px);
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(20px, 20px);
    }
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 40px 20px;
    animation: fadeInUp 1s ease;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -1px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 14px 32px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background: #0051D5;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 122, 255, 0.3);
}

.btn-secondary {
    background: var(--gray);
    color: var(--black);
}

.btn-secondary:hover {
    background: #E5E5E5;
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

/* Section Styles */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--medium-gray);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Featured Devices */
.featured-devices {
    background: var(--gray);
}

.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.device-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
}

.device-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.device-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.device-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.device-card:hover .device-image {
    transform: scale(1.05);
}

.device-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--blue);
    color: var(--white);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.device-badge.popular {
    background: var(--red);
}

.device-info {
    padding: 25px;
}

.device-info h3 {
    font-size: 22px;
    margin-bottom: 10px;
    font-weight: 600;
}

.device-specs {
    color: var(--medium-gray);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* Specifications */
.specifications {
    background: var(--white);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.spec-card {
    text-align: center;
    padding: 30px;
    border-radius: 16px;
    transition: background 0.3s;
}

.spec-card:hover {
    background: var(--gray);
}

.spec-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    color: var(--blue);
}

.spec-icon svg {
    width: 100%;
    height: 100%;
}

.spec-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    font-weight: 600;
}

.spec-card p {
    color: var(--medium-gray);
    font-size: 15px;
    line-height: 1.6;
}

/* Brand Categories */
.brand-categories {
    background: var(--gray);
}

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

.brand-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 16/10;
    cursor: pointer;
}

.brand-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.brand-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    color: var(--white);
    transform: translateY(10px);
    transition: transform 0.3s;
}

.brand-card:hover img {
    transform: scale(1.1);
}

.brand-card:hover .brand-overlay {
    transform: translateY(0);
}

.brand-overlay h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.brand-overlay p {
    font-size: 14px;
    opacity: 0.9;
}

/* Comparison Tool */
.comparison-tool {
    background: var(--white);
}

.comparison-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.comparison-column {
    background: var(--gray);
    border-radius: 20px;
    overflow: hidden;
    padding: 30px;
}

.comparison-header {
    text-align: center;
    margin-bottom: 25px;
}

.comparison-header img {
    width: 100%;
    max-width: 200px;
    height: 180px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 15px;
}

.comparison-header h3 {
    font-size: 20px;
    font-weight: 600;
}

.comparison-specs {
    list-style: none;
}

.comparison-specs li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 14px;
}

.comparison-specs li:last-child {
    border-bottom: none;
}

/* Features Showcase */
.features-showcase {
    background: var(--gray);
}

.features-grid {
    display: grid;
    gap: 40px;
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
}

.feature-item:nth-child(even) {
    direction: rtl;
}

.feature-item:nth-child(even) > * {
    direction: ltr;
}

.feature-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 300px;
}

.feature-content {
    padding: 40px;
}

.feature-content h3 {
    font-size: 28px;
    margin-bottom: 16px;
    font-weight: 600;
}

.feature-content p {
    font-size: 16px;
    color: var(--medium-gray);
    line-height: 1.7;
}

/* Device Finder */
.device-finder {
    background: var(--black);
    color: var(--white);
}

.device-finder .section-title,
.device-finder .section-subtitle {
    color: var(--white);
}

.finder-form {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.finder-option {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.finder-option label {
    font-weight: 600;
    font-size: 14px;
}

.finder-select {
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 15px;
    cursor: pointer;
}

.finder-select option {
    background: var(--dark-gray);
}

.finder-form .btn-primary {
    grid-column: 1 / -1;
    margin-top: 20px;
}

/* Reviews */
.reviews {
    background: var(--white);
}

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

.review-card {
    background: var(--gray);
    padding: 30px;
    border-radius: 16px;
    transition: transform 0.3s;
}

.review-card:hover {
    transform: translateY(-5px);
}

.review-rating {
    color: #FFD700;
    font-size: 20px;
    margin-bottom: 15px;
}

.review-text {
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--black);
}

.review-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    font-size: 16px;
    margin-bottom: 4px;
}

.author-info span {
    font-size: 13px;
    color: var(--medium-gray);
}

/* Technology Section */
.technology-section {
    background: var(--gray);
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.tech-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.tech-feature {
    margin-bottom: 30px;
}

.tech-feature h3 {
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 600;
}

.tech-feature p {
    font-size: 15px;
    color: var(--medium-gray);
    line-height: 1.7;
}

/* Contact Section */
.contact-section {
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-item svg {
    width: 24px;
    height: 24px;
    color: var(--blue);
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 18px;
    margin-bottom: 8px;
}

.contact-item p {
    color: var(--medium-gray);
    font-size: 15px;
    line-height: 1.6;
}

.contact-form {
    background: var(--gray);
    padding: 40px;
    border-radius: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    background: var(--white);
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blue);
}

.form-group textarea {
    resize: vertical;
}

/* Footer */
.footer {
    background: var(--black);
    color: var(--white);
    padding: 60px 0 30px;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
        gap: 10px;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 32px;
    }

    .devices-grid,
    .specs-grid,
    .brand-grid,
    .comparison-wrapper,
    .reviews-grid {
        grid-template-columns: 1fr;
    }

    .feature-item {
        grid-template-columns: 1fr;
    }

    .feature-item:nth-child(even) {
        direction: ltr;
    }

    .tech-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .finder-form {
        grid-template-columns: 1fr;
    }

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

@media (min-width: 360px) {
    html {
        font-size: 16px;
    }
}

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

    .hero-title {
        font-size: 28px;
    }

    .btn-large {
        padding: 14px 30px;
        font-size: 16px;
    }

    .contact-form {
        padding: 25px;
    }
}