body {
    background: #181A20;
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}
.login-container {
    background: #23242a;
    padding: 2.5rem 2rem;
    border-radius: 1.2rem;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    display: flex;
    flex-direction: column;
    min-width: 400px;
    max-width: 440px;
    animation: fadeIn 1s cubic-bezier(.39,.575,.565,1) both;
}
@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(40px); }
    100% { opacity: 1; transform: translateY(0); }
}
.login-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
    letter-spacing: 1px;
}
.input-group {
    margin-bottom: 1.2rem;
}
.input-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 1rem;
}
.input-group input {
    width: 90%;
    padding: .7rem 1rem;
    border: none;
    border-radius: 0.7rem;
    background: #1a1b20;
    color: #fff;
    font-size: 1rem;
    transition: box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.input-group input:focus {
    outline: none;
    box-shadow: 0 0 0 2px #4f8cff;
}
.login-btn {
    background: linear-gradient(90deg, #4f8cff 0%, #3358ff 100%);
    color: #fff;
    border: none;
    border-radius: 0.7rem;
    padding: 0.8rem 1rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    margin-top: 0.7rem;
    margin-left: 8.7rem;
    transition: background 0.2s, transform 0.1s;
    box-shadow: 0 4px 16px rgba(79,140,255,0.15);
}
.login-btn:hover {
    background: linear-gradient(90deg, #3358ff 0%, #4f8cff 100%);
    transform: translateY(-2px) scale(1.03);
}
.message {
    margin-top: 1rem;
    text-align: center;
    font-size: 1rem;
    min-height: 1.5em;
    transition: color 0.2s;
}
.message.success {
    color: #4f8cff;
}
.message.error {
    color: #ff4f4f;
}