body {
    min-height: 100vh;
    margin: 0;
    background:
        linear-gradient(
            rgba(3, 10, 18, 0.55),
            rgba(3, 10, 18, 0.75)
        ),
        url("../img/login-bg.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, Helvetica, sans-serif;
}

.login-card {
    width: 420px;
    padding: 36px;
    border-radius: 22px;

    background: rgba(7, 16, 24, 0.82);
    border: 1px solid rgba(0, 217, 255, 0.28);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(10px);

    color: white;
}

.logo {
    width: 100px;
    height: auto;
    margin: 0 auto 18px;
    display: block;
}

.title {
    text-align: center;
    margin: 0;
    font-size: 26px;
    font-weight: 800;
    letter-spacing: 1px;
}

.subtitle {
    text-align: center;
    color: #b8c6d1;
    margin: 8px 0 28px;
    font-size: 14px;
    letter-spacing: 1px;
}

.form-label {
    color: #c8d4df;
    font-size: 13px;
    font-weight: 600;
}

.form-control {
    height: 50px;
    background: rgba(3, 10, 18, 0.72);
    border: 1px solid rgba(154, 168, 181, 0.35);
    color: white;
    border-radius: 12px;
}

.form-control::placeholder {
    color: #7f8d99;
}

.form-control:focus {
    background: rgba(3, 10, 18, 0.9);
    color: white;
    border-color: #00d9ff;
    box-shadow: 0 0 0 0.2rem rgba(0, 217, 255, 0.18);
}

.btn-login {
    height: 50px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #00d9ff, #0077ff);
    color: white;
    font-weight: 800;
    letter-spacing: 1px;
}

.btn-login:hover {
    color: white;
    background: linear-gradient(135deg, #22e2ff, #1685ff);
}

.login-footer {
    margin-top: 22px;
    text-align: center;
    color: #aeb9c4;
    font-size: 12px;
}