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

body {
    font-family: Arial, sans-serif;
    background-color: #000;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.login-container {
    background: #1a1a1a;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
}

.login-form h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #fff;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.input-group input {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #444;
    border-radius: 5px;
    font-size: 1rem;
    outline: none;
    background: #333;
    color: #fff;
    transition: 0.3s;
}

.input-group input:focus {
    border-color: #27ae60;
    box-shadow: 0 0 5px rgba(39, 174, 96, 0.5);
}

.input-group label {
    position: absolute;
    top: 50%;
    left: 10px;
    transform: translateY(-50%);
    color: #888;
    font-size: 1rem;
    pointer-events: none;
    transition: 0.3s ease;
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
    top: 0;
    font-size: 0.8rem;
    color: #27ae60;
    background: #1a1a1a;
    padding: 0 5px;
}

button {
    width: 100%;
    padding: 0.8rem;
    border: none;
    border-radius: 5px;
    background-color: #27ae60;
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.3s ease;
}

button:hover {
    background-color: #1e8449;
}

.signup-link {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.signup-link a {
    color: #27ae60;
    text-decoration: none;
    font-weight: bold;
}

.signup-link a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .login-container {
        width: 90%;
        padding: 1.5rem;
    }
}