/* CSS Variables */
:root {
    --primary-color: #29c296;
    --primary-hover: #22a57e;
    --secondary-color: #f8f9fa;
    --text-primary: #293032;
    --text-secondary: #6c757d;
    --text-light: #98aab0;
    --background-color: #fafafa;
    --white: #ffffff;
    --border-color: #e9ecef;
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

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

/* Header */
.header {
    background: var(--white);
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    gap: 2rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    border-radius: 6px;
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 6px;
    transition: var(--transition);
}

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

/* Language Selector */
.language-selector {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    background: var(--secondary-color);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
}

.language-btn img {
    width: 16px;
    height: 12px;
    border-radius: 2px;
}

.dropdown-icon {
    fill: currentColor;
    transition: var(--transition);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    padding: 8px;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

.language-selector:hover .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-primary);
    transition: var(--transition);
}

.language-option:hover {
    background: var(--secondary-color);
}

.language-option img {
    width: 16px;
    height: 12px;
    border-radius: 2px;
}

/* Search */
.search-container {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-input {
    width: 100%;
    padding: 12px 48px 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 14px;
    background: var(--white);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(41, 194, 150, 0.1);
}

.search-btn {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-color);
    color: var(--white);
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background: var(--primary-hover);
}

.search-btn svg {
    fill: currentColor;
}

/* User Actions */
.user-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.login-btn, .signup-btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
}

.login-btn {
    color: var(--text-primary);
}

.login-btn:hover {
    background: var(--secondary-color);
}

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

.signup-btn:hover {
    background: var(--primary-hover);
}

/* Main Content */
.main-content {
    padding: 2rem 0;
}

.section {
    margin-bottom: 3rem;
}

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

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.view-more-btn {
    background: var(--primary-color);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.view-more-btn:hover {
    background: var(--primary-hover);
}

/* App Grid */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.featured-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* App Cards */
.app-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    cursor: pointer;
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.featured-card {
    border: 2px solid var(--border-color);
}

.featured-card:hover {
    border-color: var(--primary-color);
}

.app-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.mod-badge, .apk-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    color: var(--white);
}

.mod-badge {
    background: var(--primary-color);
}

.apk-badge {
    background: #6c757d;
}

.app-info {
    padding: 1rem;
}

.app-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.app-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.version::before {
    content: "📱 ";
}

.size::before {
    content: "💾 ";
}

.app-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
}

.feature-icon {
    fill: currentColor;
    flex-shrink: 0;
}

/* Categories */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-primary);
}

.category-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    color: var(--primary-color);
}

.category-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary-color);
    border-radius: 8px;
}

/* About Section */
.about-section {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    margin: 3rem 0;
}

.about-header {
    text-align: center;
    margin-bottom: 3rem;
}

.about-title {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.about-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.about-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 2rem 0 1rem 0;
}

.about-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1.5rem 0 0.75rem 0;
}

.about-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--white);
    padding: 3rem 0 1rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo img {
    height: 40px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-description {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-links {
    display: flex;
    gap: 3rem;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-link {
    color: var(--text-light);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

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

.copyright {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        display: none;
    }

    .search-container {
        display: none;
    }

    .user-actions {
        gap: 0.5rem;
    }

    .login-btn, .signup-btn {
        padding: 6px 12px;
        font-size: 13px;
    }

    .app-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }

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

    .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.75rem;
    }

    .category-item {
        padding: 0.75rem;
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .category-icon {
        font-size: 1.25rem;
        width: 36px;
        height: 36px;
    }

    .about-section {
        padding: 2rem 1.5rem;
    }

    .about-title {
        font-size: 2rem;
    }

    .about-subtitle {
        font-size: 1.1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        gap: 2rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}

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

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .app-info {
        padding: 0.75rem;
    }

    .app-title {
        font-size: 1rem;
    }

    .app-meta {
        font-size: 0.8rem;
        gap: 0.75rem;
    }

    .about-title {
        font-size: 1.75rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1.5rem;
    }
}

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

.app-card {
    animation: fadeInUp 0.6s ease forwards;
}

.app-card:nth-child(2) {
    animation-delay: 0.1s;
}

.app-card:nth-child(3) {
    animation-delay: 0.2s;
}

.app-card:nth-child(4) {
    animation-delay: 0.3s;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
button:focus,
input:focus,
a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer {
        display: none;
    }

    .app-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}