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

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #1a365d 0%, #2c5aa0 100%);
    font-family: 'Roboto', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 2rem 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
}

.logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo svg {
    width: 40px;
    height: 40px;
}

.login-container h2 {
    text-align: center;
    margin-bottom: 0.5rem;
    color: #1a365d;
    font-size: 1.5rem;
}

.login-container p {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #666;
    font-size: 0.9rem;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-size: 0.85rem;
    font-weight: bold;
}

.input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #1a365d;
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.15);
}

.btn-login {
    width: 100%;
    padding: 0.85rem;
    background: #1a365d;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: 1rem;
}

.btn-login:hover {
    background: #2c5aa0;
}

.btn-login:active {
    background: #152840;
}

.footer {
    margin-top: 2rem;
    text-align: center;
    color: #666;
    font-size: 0.8rem;
}

.games-container {
    padding: 2rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    display: none;
}

.games-container.active {
    display: block;
}

.games-container h2 {
    margin-bottom: 1rem;
    color: #1a365d;
}

.games-header {
    margin-bottom: 2rem;
}

.games-header h2 {
    margin-bottom: 0.5rem;
    color: #1a365d;
}

.games-header p {
    color: #666;
    font-size: 1rem;
}

.back-btn {
    margin: 0 1rem 1rem 0;
    padding: 0.5rem 1rem;
    background: #e0e0e0;
    border: none;
    border-radius: 20px;
    color: #333;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.3s;
}

.back-btn:hover {
    background: #d0d0d0;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    justify-items: center;
    margin-top: 2rem;
}

.game-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    width: 100%;
    max-width: 250px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
    text-align: center;
}

.game-card:hover {
    transform: translateY(-5px);
}

.game-card h3 {
    margin-bottom: 0.5rem;
    color: #1a365d;
    font-size: 1rem;
}

.game-card .play-btn {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    background: #1a365d;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: background 0.3s;
}

.game-card .play-btn:hover {
    background: #2c5aa0;
}

.footer {
    margin-top: 2rem;
    text-align: center;
    color: #666;
    font-size: 0.8rem;
}