body {
    font-family: Inter, sans-serif;
    background: #0f0f0f;
    color: #f3f3f3;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-card {
    background: #161616;
    padding: 32px 24px;
    border-radius: 16px;
    box-shadow: 0 10px 24px rgba(0,0,0,0.35);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-card h2 {
    margin-bottom: 24px;
    color: #fff;
}

.login-card input {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 16px;
    border-radius: 8px;
    border: 1px solid #555;
    background: #1a1a1a;
    color: #fff;
    font-size: 1rem;
}

.login-card input::placeholder {
    color: #aaa;
}

.login-card button {
    width: 100%;
    padding: 12px 0;
    border: none;
    border-radius: 999px;
    background-color: #e63946;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 1rem;
}

.login-card button:hover {
    background-color: #b82836;
}

.login-card .signup-link {
    display: block;
    margin-top: 16px;
    color: #ffd166;
    text-decoration: none;
    font-weight: 500;
}

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

#error {
    color: #e63946;
    margin-bottom: 12px;
    display: none;
}