body {
            color: white;
        }

        .signup-container {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 10;
            padding: 20px;
        }

        .signup-card {
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 40px 30px;
            width: 100%;
            max-width: 460px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
        }

        .signup-title {
            font-size: 28px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #06b6d4, #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        label {
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
        }

        .form-control {
            background-color: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: white;
        }

        .form-control:focus {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
            border-color: rgba(59, 130, 246, 0.4);
        }

        .form-text.text-muted {
            color: rgba(255, 255, 255, 0.5) !important;
        }

        .btn-primary {
            background: linear-gradient(135deg, #06b6d4, #3b82f6);
            border: none;
            padding: 10px;
            font-weight: 600;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #0ea5e9, #2563eb);
        }

        .alert {
            font-size: 14px;
            padding: 8px 12px;
        }