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

body {
    font-family: 'Press Start 2P', cursive;
    line-height: 1.6;
    background-color: #000000;
    color: #ffffff;
}

/* Global Link Styles */
a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

a:hover {
    color: #00d4ff;
}

a:focus {
    outline: 2px solid #00d4ff;
    outline-offset: 2px;
}

/* Enhanced Link Accessibility */
a:focus-visible {
    outline: 3px solid #00d4ff;
    outline-offset: 3px;
    border-radius: 4px;
}

/* Navigation Bar */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: linear-gradient(135deg, #111111 0%, #1a1a1a 100%);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
    border-bottom: 2px solid #00d4ff;
    position: relative;
}

.nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
    animation: glow 2s ease-in-out infinite alternate;
}

.nav-left {
    display: flex;
    align-items: center;
}

.nav-left-logo {
    display: flex;
    align-items: center;
}

/* Logo Link */
.logo-text {
    font-family: 'Press Start 2P', cursive;
    font-size: 1.2rem;
    color: #00d4ff;
    margin: 0;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.8), 2px 2px 4px rgba(0, 0, 0, 0.8);
    letter-spacing: 2px;
    animation: logoGlow 3s ease-in-out infinite alternate;
    text-decoration: none;
    display: inline-block;
}

.logo-text:hover {
    color: #ffffff;
    text-shadow: 0 0 20px rgba(0, 212, 255, 1), 2px 2px 4px rgba(0, 0, 0, 0.8);
}

/* Logo Link Specific Styling */
.nav-left-logo a {
    text-decoration: none;
    display: block;
}

.nav-left-logo a:hover .logo-text {
    color: #ffffff;
    text-shadow: 0 0 20px rgba(0, 212, 255, 1), 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.nav-right ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

/* Navigation Links */
.nav-right ul li a {
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.7rem;
    letter-spacing: 1px;
    position: relative;
}

.nav-right ul li a:hover {
    color: #00d4ff;
}

.nav-right ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #00d4ff;
    transition: width 0.3s ease;
}

.nav-right ul li a:hover::after {
    width: 100%;
}

/* Active Navigation State */
.nav-right ul li a.active {
    color: #00d4ff;
    font-weight: 600;
}

.nav-right ul li a.active::after {
    width: 100%;
}

.nav-right-button {
    background: linear-gradient(135deg, #00d4ff 0%, #00b8e6 100%);
    color: #000000;
    border: 2px solid #00d4ff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    font-family: 'Press Start 2P', cursive;
    font-size: 0.6rem;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
    display: inline-block;
    text-decoration: none;
}

/* Button Link Hover Effects */
.nav-right-button:hover,
.freeproductcard-button-button:hover,
.product-card-button-link:hover,
.back-button:hover,
.product-buy-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.nav-right-button:focus {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

/* Catalog button without animations */
.nav-right-button[href*="catlog"] {
    background: #00d4ff;
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-right-button[href*="catlog"]::before {
    display: none;
}

.nav-right-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.nav-right-button:hover::before {
    left: 100%;
}

/* Horizontal Rule */
hr {
    border: none;
    height: 1px;
    background-color: #333333;
    margin: 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
    text-align: center;
    position: relative;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

/* Title */
.title h1 {
    font-size: 1.6rem;
    margin-bottom: 2rem;
    color: #ffffff;
    line-height: 1.4;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

/* Center Text */
.center-text {
    margin-bottom: 3rem;
    background: linear-gradient(135deg, #00d4ff 0%, #00b8e6 100%);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.center-text::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 3s infinite;
}

.center-text-p {
    font-size: 0.9rem;
    color: #ffffff;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.8;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    font-weight: 600;
    letter-spacing: 1px;
}

/* Free Product Card */
.freeproductcard {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
    padding: 3rem;
    background: linear-gradient(135deg, #111111 0%, #1a1a1a 100%);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
    border: 2px solid #333333;
    position: relative;
    overflow: hidden;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.freeproductcard::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.freeproductcard-img img {
    max-width: 300px;
    height: auto;
    border-radius: 8px;
}

.freeproductcard-title h2 {
    font-size: 1.3rem;
    color: #ffffff;
    margin: 0;
    text-align: center;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.freeproductcard-text {
    text-align: center;
    max-width: 400px;
}

.freeproductcard-text p {
    font-size: 0.8rem;
    color: #ffffff;
    line-height: 1.8;
    margin: 0;
    letter-spacing: 1px;
}

/* Free Product Card Button Link */
.freeproductcard-button-button {
    background: linear-gradient(135deg, #00d4ff 0%, #00b8e6 100%);
    color: #000000;
    border: 2px solid #00d4ff;
    padding: 1rem 2rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.7rem;
    transition: all 0.3s ease;
    font-family: 'Press Start 2P', cursive;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
    display: inline-block;
    text-decoration: none;
}

.freeproductcard-button-button:hover {
    background-color: #ffffff;
    color: #000000;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.freeproductcard-button-button:focus {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

.freeproductcard-button-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.freeproductcard-button-button:hover::before {
    left: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-right ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    .title h1 {
        font-size: 1.2rem;
    }
    
    .freeproductcard {
        flex-direction: column;
        text-align: center;
    }
    
    .freeproductcard-text {
        text-align: center;
    }
}



/* Search Section */
.search-section {
    margin: 3rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.search-container {
    display: flex;
    gap: 1rem;
    max-width: 600px;
    width: 100%;
}

.search-input {
    flex: 1;
    padding: 1rem;
    border: 2px solid #00d4ff;
    border-radius: 10px;
    background: #111111;
    color: #ffffff;
    font-family: 'Press Start 2P', cursive;
    font-size: 0.6rem;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.2);
}

.search-input:focus {
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
    border-color: #ffffff;
}

.search-input::placeholder {
    color: #666666;
}

.search-button {
    background: linear-gradient(135deg, #00d4ff 0%, #00b8e6 100%);
    color: #000000;
    border: 2px solid #00d4ff;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.6rem;
    transition: all 0.3s ease;
    font-family: 'Press Start 2P', cursive;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.search-button:hover {
    background: #ffffff;
    color: #000000;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.5);
}

.filter-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 2px solid #333333;
    border-radius: 8px;
    background: #111111;
    color: #ffffff;
    font-family: 'Press Start 2P', cursive;
    font-size: 0.5rem;
    outline: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.filter-select:focus {
    border-color: #00d4ff;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.filter-select option {
    background: #111111;
    color: #ffffff;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* Product Card Component */
.product-card {
    background: linear-gradient(135deg, #111111 0%, #1a1a1a 100%);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
    border: 2px solid #333333;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 212, 255, 0.3);
    border-color: #00d4ff;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.product-card-title {
    font-size: 1rem;
    color: #00d4ff;
    margin-bottom: 1rem;
    text-align: center;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.product-card-img {
    text-align: center;
    margin-bottom: 1.5rem;
}

.product-card-img img {
    max-width: 200px;
    height: auto;
    border-radius: 10px;
    border: 2px solid #333333;
    transition: all 0.3s ease;
}

.product-card:hover .product-card-img img {
    border-color: #00d4ff;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.product-card-description {
    font-size: 0.6rem;
    color: #cccccc;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    text-align: center;
}

.product-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.5rem;
}

.product-card-difficulty {
    padding: 0.25rem 0.5rem;
    border-radius: 5px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.product-card-difficulty.beginner {
    background: #00ff00;
    color: #000000;
}

.product-card-difficulty.intermediate {
    background: #ffaa00;
    color: #000000;
}

.product-card-difficulty.advanced {
    background: #ff0000;
    color: #ffffff;
}

.product-card-category {
    color: #00d4ff;
    font-weight: 600;
}

.product-card-button {
    text-align: center;
}

/* Product Card Button Link */
.product-card-button-link {
    background: linear-gradient(135deg, #00d4ff 0%, #00b8e6 100%);
    color: #000000;
    border: 2px solid #00d4ff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.6rem;
    transition: all 0.3s ease;
    font-family: 'Press Start 2P', cursive;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
    display: inline-block;
    text-decoration: none;
}

.product-card-button-link:hover {
    background: #ffffff;
    color: #000000;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

.product-card-button-link:focus {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

.product-card-button-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.product-card-button-link:hover::before {
    left: 100%;
}

/* Responsive adjustments for catalog */
@media (max-width: 768px) {
    .search-container {
        flex-direction: column;
    }
    
    .filter-container {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .product-card {
        padding: 1.5rem;
    }
}

/* Animations */
@keyframes glow {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

@keyframes logoGlow {
    0% { text-shadow: 0 0 10px rgba(0, 212, 255, 0.8), 2px 2px 4px rgba(0, 0, 0, 0.8); }
    100% { text-shadow: 0 0 20px rgba(0, 212, 255, 1), 2px 2px 4px rgba(0, 0, 0, 0.8); }
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* Product Page Styles */
.back-button-container {
    margin-bottom: 2rem;
    text-align: left;
}

/* Back Button Link */
.back-button {
    background: #333333;
    color: #ffffff;
    border: 2px solid #00d4ff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.6rem;
    transition: all 0.3s ease;
    font-family: 'Press Start 2P', cursive;
    letter-spacing: 1px;
    display: inline-block;
    text-decoration: none;
}

.back-button:hover {
    background: #00d4ff;
    color: #000000;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.back-button:focus {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

.product-banner {
    margin-bottom: 3rem;
    text-align: center;
}

.product-banner img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    border: 2px solid #333333;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
}

.product-info {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background: linear-gradient(135deg, #111111 0%, #1a1a1a 100%);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
    border: 2px solid #333333;
    position: relative;
    overflow: hidden;
}

.product-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.product-header-simple {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.product-header-simple h1 {
    font-size: 1.5rem;
    color: #00d4ff;
    margin: 0;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.product-price-simple {
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    background: #00d4ff;
    color: #000000;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.product-description-extended {
    margin-bottom: 2rem;
}

.product-description-extended p {
    font-size: 0.8rem;
    color: #cccccc;
    line-height: 1.8;
    text-align: justify;
}

.product-action {
    text-align: center;
}

/* Product Buy Button Link */
.product-buy-button {
    background: linear-gradient(135deg, #00d4ff 0%, #00b8e6 100%);
    color: #000000;
    border: 2px solid #00d4ff;
    padding: 1rem 2rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.7rem;
    transition: all 0.3s ease;
    font-family: 'Press Start 2P', cursive;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    display: inline-block;
    text-decoration: none;
}

.product-buy-button:hover {
    background: #ffffff;
    color: #000000;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.5);
    transform: translateY(-3px);
}

.product-buy-button:focus {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

/* Responsive Design for Product Page */
@media (max-width: 768px) {
    .product-header-simple {
        flex-direction: column;
        text-align: center;
    }
    
    .product-info {
        padding: 1.5rem;
    }
    
    .back-button-container {
        text-align: center;
    }
}

/* External Link Indicator */
a[href^="http"]::after {
    content: ' ↗';
    font-size: 0.8em;
    opacity: 0.7;
}

a[href^="http"]:hover::after {
    opacity: 1;
}

/* Disabled Link State */
a[disabled], a.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Active Link State */
a.active {
    color: #00d4ff;
    font-weight: 600;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #00d4ff;
    color: #000000;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Link Loading State */
a.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

a.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid #00d4ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Print Styles for Links */
@media print {
    a {
        color: #000000 !important;
        text-decoration: underline !important;
    }
    
    a[href^="http"]::after {
        content: ' (' attr(href) ')';
        font-size: 0.8em;
        color: #666666;
    }
}