*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #1a1f36 0%, #2d3561 50%, #1a1f36 100%);
    font-family: 'Segoe UI', system-ui, sans-serif;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

    img {
        height: 40px;
        filter: brightness(0) invert(1);
        opacity: .85;
    }

.main-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.login-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 1.25rem;
    padding: 2.75rem 2.5rem 2.25rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
    color: #fff;
}

    .login-card .brand {
        text-align: center;
        margin-bottom: 1.75rem;
    }

        .login-card .brand h1 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 .25rem;
            letter-spacing: -.5px;
        }

        .login-card .brand p {
            font-size: .875rem;
            color: rgba(255,255,255,.55);
            margin: 0;
        }

    .login-card .form-label {
        font-size: .8rem;
        font-weight: 600;
        letter-spacing: .05em;
        text-transform: uppercase;
        color: rgba(255,255,255,.6);
        margin-bottom: .35rem;
    }

    .login-card .form-control {
        background: rgba(255,255,255,.08);
        border: 1px solid rgba(255,255,255,.15);
        border-radius: .6rem;
        color: #fff;
        padding: .65rem 1rem;
        font-size: .95rem;
        transition: border-color .2s, background .2s;
    }

        .login-card .form-control:focus {
            background: rgba(255,255,255,.13);
            border-color: rgba(255,255,255,.45);
            box-shadow: none;
            color: #fff;
            outline: none;
        }

        .login-card .form-control::placeholder {
            color: rgba(255,255,255,.3);
        }

    .login-card .btn-signin {
        width: 100%;
        padding: .7rem;
        font-size: 1rem;
        font-weight: 600;
        border-radius: .6rem;
        background: linear-gradient(90deg, #4f8ef7, #7b5ea7);
        border: none;
        color: #fff;
        letter-spacing: .02em;
        transition: opacity .2s, transform .15s;
        margin-top: .5rem;
    }

        .login-card .btn-signin:hover {
            opacity: .9;
            transform: translateY(-1px);
        }

        .login-card .btn-signin:active {
            transform: translateY(0);
        }

.text-danger {
    color: #ff8080 !important;
    font-size: .82rem;
}

footer {
    text-align: center;
    padding: 1rem;
    font-size: .78rem;
    color: rgba(255,255,255,.3);
}