:root {
                    --gyt-rojo: #cc0033;
                    --gyt-rojo-oscuro: #a30029;
                    --gyt-naranja: #f39c12;
                    --gyt-naranja-hover: #e67e22;

                    --bg-app: #f4f6f9;
                    --bg-card: #ffffff;
                    --text-main: #1f2937;
                    --text-muted: #6b7280;
                    --border-color: #d1d5db;
                    --focus-ring: rgba(243, 156, 18, 0.2);

                    --radius-card: 24px;
                    --radius-input: 12px;
                    --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.08);
                }

                * {
                    box-sizing: border-box;
                    margin: 0;
                    padding: 0;
                    font-family: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
                }

                body {
                    background-color: var(--bg-app);
                    background-image: linear-gradient(135deg, #f4f6f9 0%, #e2e8f0 100%);
                    display: flex;
                    justify-content: center;
                    align-items: center;
                    min-height: 100vh;
                    color: var(--text-main);
                }

                .sso-wrapper {
                    display: flex;
                    width: 100%;
                    max-width: 1000px;
                    background-color: var(--bg-card);
                    border-radius: var(--radius-card);
                    box-shadow: var(--shadow-soft);
                    overflow: hidden;
                    min-height: 550px;
                    margin: 20px;
                }

                .sso-brand-panel {
                    flex: 1;
                    background-color: var(--gyt-rojo);
                    background-image: linear-gradient(145deg, var(--gyt-rojo) 0%, var(--gyt-rojo-oscuro) 100%);
                    color: white;
                    display: flex;
                    flex-direction: column;
                    align-items: center;
                    justify-content: center;
                    padding: 50px 30px;
                    text-align: center;
                }

                .sso-brand-panel img {
                    max-width: 150px;
                    background-color: white;
                    padding: 18px;
                    border-radius: 20px;
                    margin-bottom: 30px;
                    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
                }

                .sso-brand-panel h5 {
                    font-size: 32px;
                    font-weight: 700;
                    margin-bottom: 10px;
                    letter-spacing: -0.5px;
                }

                .sso-brand-panel p {
                    font-size: 16px;
                    font-weight: 400;
                    opacity: 0.9;
                }

                .sso-form-panel {
                    flex: 1.2;
                    padding: 60px 70px;
                    display: flex;
                    flex-direction: column;
                    justify-content: center;
                }

                .sso-form-panel h1 {
                    color: var(--gyt-rojo);
                    font-size: 28px;
                    font-weight: 800;
                    text-align: center;
                    margin-bottom: 40px;
                }

                .form-row {
                    margin-bottom: 24px;
                }

                .form-row label {
                    display: block;
                    color: var(--text-muted);
                    font-size: 14px;
                    font-weight: 600;
                    margin-bottom: 8px;
                }

                .sso-input {
                    width: 100%;
                    padding: 15px 18px;
                    border: 2px solid var(--border-color);
                    border-radius: var(--radius-input);
                    font-size: 16px;
                    color: var(--text-main);
                    background-color: #fafafa;
                    transition: all 0.3s ease;
                }

                .sso-input:focus {
                    outline: none;
                    border-color: var(--gyt-naranja);
                    background-color: #ffffff;
                    box-shadow: 0 0 0 4px var(--focus-ring);
                }

                .sso-button-group {
                    display: flex;
                    flex-direction: column;
                    gap: 16px;
                    margin-top: 35px;
                }

                .sso-btn {
                    width: 100%;
                    padding: 16px;
                    font-size: 16px;
                    font-weight: 700;
                    border: none;
                    border-radius: var(--radius-input);
                    cursor: pointer;
                    transition: all 0.2s ease;
                }

                .sso-btn-primary {
                    background-color: var(--gyt-naranja);
                    color: white;
                    box-shadow: 0 4px 14px rgba(243, 156, 18, 0.25);
                }

                .sso-btn-primary:hover {
                    background-color: var(--gyt-naranja-hover);
                    transform: translateY(-2px);
                    box-shadow: 0 6px 20px rgba(243, 156, 18, 0.35);
                }

                .sso-btn-primary:active {
                    transform: translateY(0);
                }

                .sso-btn-secondary {
                    background-color: #f3f4f6;
                    color: var(--text-muted);
                    border: 1px solid #e5e7eb;
                }

                .sso-btn-secondary:hover {
                    background-color: #e5e7eb;
                    color: var(--text-main);
                }

                .sso-forgot {
                    display: block;
                    text-align: center;
                    margin-top: 30px;
                    color: var(--text-muted);
                    font-size: 14px;
                    font-weight: 500;
                    text-decoration: none;
                    transition: color 0.3s;
                }

                .sso-forgot:hover {
                    color: var(--gyt-naranja);
                    text-decoration: underline;
                }

                .sso-error-msg {
                    color: var(--gyt-rojo);
                    font-size: 14px;
                    font-weight: 600;
                    text-align: center;
                    margin-bottom: 20px;
                    background-color: #fff0f2;
                    border-left: 4px solid var(--gyt-rojo);
                    padding: 12px;
                    border-radius: 6px;
                    display: none;
                }
                .sso-error-msg:not(:empty) {
                    display: block;
                }

                .sso-hidden-img img {
                    display: none;
                }

                @media (max-width: 850px) {
                    .sso-wrapper {
                        flex-direction: column;
                        min-height: auto;
                        border-radius: 16px;
                    }
                    .sso-brand-panel {
                        padding: 40px 20px;
                    }
                    .sso-brand-panel img {
                        max-width: 100px;
                        margin-bottom: 20px;
                    }
                    .sso-brand-panel h5 {
                        font-size: 24px;
                    }
                    .sso-form-panel {
                        padding: 40px 25px;
                    }
                    .sso-form-panel h1 {
                        font-size: 24px;
                        margin-bottom: 25px;
                    }
                }