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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.logo p {
    font-size: 0.9rem;
    opacity: 0.8;
}

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

.nav a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav a:hover, .nav a.active {
    opacity: 0.8;
}

.login-btn {
    background: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    border: 1px solid rgba(255,255,255,0.3);
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.search-bar {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.search-bar input {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 5px 0 0 5px;
    font-size: 1rem;
}

.search-bar button {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    font-size: 1rem;
}

/* Sections */
section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

/* Apps Grid */
.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.app-card {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.app-icon {
    text-align: center;
    margin-bottom: 1rem;
}

.app-icon img {
    width: 80px;
    height: 80px;
    border-radius: 15px;
    object-fit: cover;
}

.app-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.app-info p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.app-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.8rem;
    color: #888;
}

.app-meta span {
    background: #f8f9fa;
    padding: 0.3rem 0.6rem;
    border-radius: 15px;
}

.app-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-download, .btn-details {
    flex: 1;
    padding: 0.7rem;
    text-align: center;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-download {
    background: #667eea;
    color: white;
}

.btn-download:hover {
    background: #5a6fd8;
}

.btn-details {
    background: #f8f9fa;
    color: #333;
    border: 1px solid #ddd;
}

.btn-details:hover {
    background: #e9ecef;
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.category-card {
    background: white;
    padding: 2rem 1rem;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-3px);
}

.category-card i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.category-card h3 {
    margin-bottom: 0.5rem;
    color: #333;
}

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

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    color: #ccc;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #333;
}

/* No Apps State */
.no-apps {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: #666;
}

.no-apps i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #ccc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .apps-grid {
        grid-template-columns: 1fr;
    }
}