body {
        margin: 0;
        height: 100vh;
        overflow: hidden;
        background: #0b0f19;
        color: #fff;
        font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    }

    /* Abstract animated background */
    .bg {
        position: absolute;
        inset: 0;
        background: radial-gradient(circle at 20% 30%, rgba(0, 255, 200, 0.15), transparent 40%),
                    radial-gradient(circle at 80% 20%, rgba(120, 0, 255, 0.18), transparent 45%),
                    radial-gradient(circle at 50% 80%, rgba(0, 120, 255, 0.15), transparent 50%);
        filter: blur(20px);
        animation: float 10s ease-in-out infinite;
        z-index: 0;
    }

    @keyframes float {
        0%, 100% { transform: scale(1) translateY(0px); }
        50% { transform: scale(1.1) translateY(-20px); }
    }

    .login-card {
        position: relative;
        z-index: 1;
        width: 100%;
        max-width: 420px;
        background: rgba(20, 24, 35, 0.85);
        border: 1px solid rgba(255,255,255,0.08);
        backdrop-filter: blur(12px);
        border-radius: 16px;
        padding: 30px;
        box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    }

    .form-control {
        background: rgba(255,255,255,0.05);
        border: 1px solid rgba(255,255,255,0.1);
        color: #fff;
    }

    .form-control:focus {
        background: rgba(255,255,255,0.08);
        border-color: #6ea8fe;
        box-shadow: none;
        color: #fff;
    }

    .btn-primary {
        background: linear-gradient(135deg, #4f46e5, #06b6d4);
        border: none;
    }

    .btn-primary:hover {
        opacity: 0.9;
    }

    .center-wrap {
        height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        z-index: 1;
    }

    .brand {
        font-weight: 600;
        letter-spacing: 1px;
        margin-bottom: 20px;
        text-align: center;
    }