* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: #f4f7fa;
    color: #333;
    transition: background 0.3s, color 0.3s;
}
body.dark-mode {
    background: #1a1a2e;
    color: #e0e0e0;
}
.navbar {
    background: linear-gradient(135deg, #667eea, #764ba2);
    padding: 15px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}
body.dark-mode .navbar {
    background: linear-gradient(135deg, #16213e, #0f3460);
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}
.logo {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 700;
    text-decoration: none;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
}
.nav-links a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 20px;
    transition: background 0.3s;
}
.nav-links a:hover {
    background: rgba(255,255,255,0.2);
}
.nav-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav-controls select, .nav-controls button {
    padding: 8px 12px;
    border: none;
    border-radius: 20px;
    background: rgba(255,255,255,0.2);
    color: #fff;
    cursor: pointer;
    font-size: 0.9rem;
}
.nav-controls select option {
    color: #333;
}
.hamburger {
    display: none;
    font-size: 1.8rem;
    color: #fff;
    cursor: pointer;
}
.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: #fff;
    margin-bottom: 30px;
    border-radius: 0 0 50px 50px;
}
body.dark-mode .hero {
    background: linear-gradient(135deg, #0f3460, #16213e);
}
.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.hero p {
    font-size: 1.2rem;
    margin-bottom: 25px;
}
.search-form {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.search-form input {
    padding: 12px 20px;
    width: 300px;
    max-width: 80%;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.search-form button {
    padding: 12px 30px;
    border: none;
    border-radius: 30px;
    background: #667eea;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s;
}
.search-form button:hover {
    transform: scale(1.05);
}
.filters {
    max-width: 1200px;
    margin: 0 auto 30px;
    padding: 0 20px;
}
.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
}
.filter-group select {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 20px;
    background: #fff;
    font-size: 0.9rem;
    cursor: pointer;
}
body.dark-mode .filter-group select {
    background: #2d2d44;
    color: #e0e0e0;
    border-color: #444;
}
.software-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto 40px;
    padding: 0 20px;
}
.software-card {
    background: #fff;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}
body.dark-mode .software-card {
    background: #2d2d44;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.software-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}
.software-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 15px;
    margin-bottom: 15px;
}
.software-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}
body.dark-mode .software-card h3 {
    color: #e0e0e0;
}
.software-card .description {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
body.dark-mode .software-card .description {
    color: #aaa;
}
.software-card .meta {
    display: flex;
    justify-content: space-around;
    margin-bottom: 15px;
    font-size: 0.9rem;
}
.software-card .btn {
    display: inline-block;
    padding: 10px 25px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    border-radius: 30px;
    text-decoration: none;
    transition: background 0.3s;
}
.software-card .btn:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
}
.no-results {
    text-align: center;
    font-size: 1.2rem;
    color: #999;
    padding: 40px;
}
footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 30px 20px;
}
body.dark-mode footer {
    background: #0f0f23;
}
footer a {
    color: #667eea;
    text-decoration: none;
}
footer a:hover {
    text-decoration: underline;
}
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 40px;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    text-align: center;
}
.login-container h2 {
    margin-bottom: 20px;
}
.login-container input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
}
.login-container button {
    width: 100%;
    padding: 12px;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 10px;
    cursor: pointer;
}
.error {
    color: red;
    margin-bottom: 15px;
}
.admin-main {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}
.admin-section {
    background: #fff;
    padding: 25px;
    margin-bottom: 25px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
body.dark-mode .admin-section {
    background: #2d2d44;
}
.admin-section h3 {
    margin-bottom: 15px;
}
.admin-form input, .admin-form textarea, .admin-form select {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.9rem;
}
.admin-form textarea {
    height: 80px;
}
.admin-form button {
    padding: 10px 25px;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}
table {
    width: 100%;
    border-collapse: collapse;
}
table th, table td {
    padding: 10px;
    border-bottom: 1px solid #ddd;
    text-align: left;
}
body.dark-mode table th, body.dark-mode table td {
    border-color: #444;
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(102, 126, 234, 0.95);
        padding: 20px;
    }
    .nav-links.active {
        display: flex;
    }
    .hamburger {
        display: block;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .software-grid {
        grid-template-columns: 1fr;
    }
}
.theme-fashion .navbar {
    background: linear-gradient(135deg, #ff9a9e, #fad0c4);
}
.theme-fashion .hero {
    background: linear-gradient(135deg, #a18cd1, #fbc2eb);
}
.theme-food .navbar {
    background: linear-gradient(135deg, #f7971e, #ffd200);
}
.theme-food .hero {
    background: linear-gradient(135deg, #ff6a00, #ee0979);
}