/* Modern Shop Interface Styles */
:root {
    --primary-color: #6366f1;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --dark-color: #1f2937;
    --light-color: #f9fafb;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.85) 0%, rgba(118, 75, 162, 0.85) 100%), 
                url('/images/anhnen.jpg') center/cover fixed;
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    min-height: 100vh;
    color: #333;
    position: relative;
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-menu a:hover {
    background: var(--light-color);
    color: var(--primary-color);
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

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

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

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* Product Grid */
.products-section {
    padding: 3rem 0;
    max-width: 1200px;
    margin: 0 auto;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    padding: 0 20px;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 12px 12px 0 0;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.product-features {
    list-style: none;
    margin-bottom: 1rem;
}

.product-features li {
    padding: 0.3rem 0;
    color: #666;
    font-size: 0.9rem;
}

.product-features li:before {
    content: "✓ ";
    color: var(--success-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    max-width: 450px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
    transition: var(--transition);
    background: none;
    border: none;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--danger-color);
}

.modal-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-text {
    font-size: 0.85rem;
    color: #6b7280;
    margin-top: 0.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.modal-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e5e7eb;
}

.modal-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.modal-footer a:hover {
    text-decoration: underline;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    margin-top: 0.5rem;
    display: none;
}

.dropdown-menu.active {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background: var(--light-color);
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        padding: 1.5rem;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 0.5rem;
}

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


/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.5rem;
}

/* Categories Section */
.categories-section {
    padding: 4rem 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.section-title i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}



.category-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.category-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.category-card p {
    font-size: 0.9rem;
    color: #666;
}

/* Product Badges */
.product-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    right: 1rem;
    display: flex;
    justify-content: space-between;
    z-index: 10;
}

.badge-type {
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
}

.badge-account {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.badge-key {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: white;
}

.badge-featured {
    background: linear-gradient(135deg, #fa709a, #fee140);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: bold;
}

.product-category {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* About Section */
.about-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.about-section .section-title {
    color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Updates */
@media (max-width: 768px) {
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
}

/* Category Grid Styles - Horizontal Layout */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    padding: 0 20px;
    margin-bottom: 3rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.category-card {
    background: transparent;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    border: none;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.category-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
}

.category-card:hover .category-image-wrapper {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.4), 
                0 0 60px rgba(118, 75, 162, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.category-card:hover .category-image-wrapper::before {
    opacity: 1;
    animation: borderGlow 2s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% {
        opacity: 0.8;
        filter: brightness(1);
    }
    50% {
        opacity: 1;
        filter: brightness(1.2);
    }
}

.category-image-wrapper {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3), 
                0 0 40px rgba(118, 75, 162, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
    border: 3px solid transparent;
    background-clip: padding-box;
    position: relative;
    transition: all 0.3s ease;
}

.category-image-wrapper::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899, #f59e0b);
    border-radius: var(--border-radius);
    z-index: -1;
    opacity: 0.8;
}

.category-image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.category-card img {
    width: 100%;
    height: 200px;
    display: block;
    object-fit: cover;
    object-position: center;
    margin-top: -15px;
    margin-bottom: 5px;
}

.category-card h3 {
    padding: 1rem 1.2rem;
    font-size: 0.9rem;
    color: #1e293b;
    margin: 0;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.category-card h3::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899);
    animation: gradientShift 3s ease infinite;
}

.category-card h3::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 70%
    );
    animation: shine 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899);
    }
    50% {
        background: linear-gradient(90deg, #ec4899, #f59e0b, #6366f1);
    }
}

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

.category-card:hover h3 {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.25),
                inset 0 1px 0 rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 6px 20px rgba(99, 102, 241, 0.25),
                    inset 0 1px 0 rgba(255, 255, 255, 1);
    }
    50% {
        box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4),
                    inset 0 1px 0 rgba(255, 255, 255, 1);
    }
}

/* Products Header */
.products-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 0 20px;
}

.btn-back {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

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

#categoryTitle {
    font-size: 1.8rem;
    color: white;
    margin: 0;
}

/* Responsive for Category Grid */
@media (max-width: 1200px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .category-card h3 {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
    
    .category-card img {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
}

/* Other Category Section - Simple */
.other-category-section {
    margin-top: 4rem;
    padding: 0 20px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.other-category-content {
    max-width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.other-category-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.95) 100%);
    border-radius: 14px;
    padding: 1.2rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15),
                0 0 40px rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.other-category-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.other-category-item:hover::before {
    left: 100%;
}

.other-category-item span {
    font-size: 1rem;
    font-weight: 700;
    color: #1e293b;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: block;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.gradient-line {
    height: 4px;
    background: linear-gradient(90deg, #f59e0b, #ec4899, #8b5cf6, #6366f1);
    margin-top: 0.8rem;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.3);
    animation: gradientSlide 3s linear infinite;
}

@keyframes gradientSlide {
    0% {
        background-position: 0% 50%;
    }
    100% {
        background-position: 200% 50%;
    }
}

.gradient-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    animation: shimmerTech 2s infinite;
}

@keyframes shimmerTech {
    0% {
        left: -50%;
    }
    100% {
        left: 150%;
    }
}

.other-category-item:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.3),
                0 0 60px rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.5);
}

.other-category-item:hover .gradient-line {
    height: 6px;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

/* Download Game Section */
.download-section {
    margin-top: 4rem;
    padding: 3rem 2rem;
    background: rgba(99, 102, 241, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.download-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.download-header h2 {
    font-size: 2rem;
    color: white;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    margin: 0;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    padding: 1rem 2rem;
    border-radius: 50px;
    display: inline-block;
}

.download-header h2 i {
    margin-right: 0.5rem;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.download-item {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.download-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.3);
}

.download-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.download-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.download-gradient-line {
    height: 4px;
    background: linear-gradient(90deg, #f59e0b, #ec4899, #8b5cf6, #6366f1);
    animation: gradientMove 3s ease infinite;
}

@keyframes gradientMove {
    0%, 100% {
        background: linear-gradient(90deg, #f59e0b, #ec4899, #8b5cf6, #6366f1);
    }
    50% {
        background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899, #f59e0b);
    }
}

.btn-download, .btn-download-login {
    width: calc(100% - 2rem);
    margin: 1rem;
    padding: 1rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-download {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-download-login {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-download-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.download-info {
    padding: 1rem 1.5rem;
    background: rgba(99, 102, 241, 0.05);
    font-size: 0.85rem;
    color: #64748b;
    line-height: 1.6;
}

.download-info i {
    color: #6366f1;
    margin-right: 0.5rem;
}

@media (max-width: 768px) {
    .download-grid {
        grid-template-columns: 1fr;
    }
}

/* Guide Tabs */
.guide-tabs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.guide-tab {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.guide-tab i {
    font-size: 1.2rem;
    color: #6366f1;
}

.guide-tab span {
    font-size: 0.9rem;
    font-weight: 600;
    color: #1e293b;
}

.guide-tab:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.2);
    border-color: #6366f1;
}

.guide-tab:hover i {
    animation: bounce 0.6s ease infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* Download Badge */
.download-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-badge.ios {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.download-badge i {
    font-size: 1.2rem;
}

.download-item {
    position: relative;
}

/* Tech Particles Effect */
.other-category-section {
    position: relative;
}

.other-category-section .other-category-content::before,
.other-category-section .other-category-content::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(99, 102, 241, 0.6);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.8);
    pointer-events: none;
}

.other-category-section .other-category-content::before {
    top: 20%;
    left: 10%;
    animation: floatParticle1 6s ease-in-out infinite;
}

.other-category-section .other-category-content::after {
    top: 60%;
    right: 15%;
    animation: floatParticle2 8s ease-in-out infinite;
}

@keyframes floatParticle1 {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.3;
    }
    50% {
        transform: translate(30px, -30px);
        opacity: 1;
    }
}

@keyframes floatParticle2 {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.3;
    }
    50% {
        transform: translate(-40px, 40px);
        opacity: 1;
    }
}

/* Scan Line Effect */
.other-category-item::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.6), transparent);
    animation: scanLineItem 4s linear infinite;
    pointer-events: none;
}

@keyframes scanLineItem {
    0% {
        top: -100%;
    }
    100% {
        top: 200%;
    }
}

/* Product Card Wrapper - Khung bao ngoài cho mỗi acc */
.product-card-wrapper {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.15),
                0 0 40px rgba(118, 75, 162, 0.1),
                inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 2px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #6366f1, #8b5cf6, #ec4899, #f59e0b);
    animation: gradientShift 3s ease infinite;
}

.product-card-wrapper:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.25),
                0 0 60px rgba(118, 75, 162, 0.15),
                inset 0 1px 0 rgba(255, 255, 255, 1);
    border-color: rgba(99, 102, 241, 0.4);
}

.product-info-card {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    border: 1px solid rgba(99, 102, 241, 0.2);
    backdrop-filter: blur(10px);
}

.product-info-card .product-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #1e293b !important;
    margin: 0 0 0.75rem 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
}

.product-info-card .product-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: #ec4899 !important;
    text-align: center;
    margin-bottom: 1rem;
}

.product-info-card .product-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.product-info-card .product-features li {
    padding: 0.5rem 0;
    color: #64748b !important;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-info-card .product-features li::before {
    content: '✓';
    color: #10b981;
    font-weight: bold;
    font-size: 1.1rem;
}


/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex !important;
    opacity: 1;
}

.modal-content {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    font-size: 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.modal-close:hover {
    background: #ef4444;
    color: white;
    transform: rotate(90deg);
}

.modal-title {
    color: #1e293b;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    padding-right: 2rem;
}