.pantalla-login-dual {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 2rem 2rem;
    min-height: 100vh;
    background: #000000;
}

.header-global-login {
    text-align: center;
    margin-bottom: 1.5rem;
    max-width: 1100px;
    position: relative;
    z-index: 20;
    padding: 0;
}

.logo-premium-fusion {
    max-width: 480px; /* Tamaño equilibrado para no tapar los formularios */
    max-height: 28vh; /* [FIX] Restricción de altura responsiva para no empujar formularios hacia abajo */
    width: 100%;
    height: auto;
    object-fit: contain;
    margin: 0 auto;
    display: block;
    background: transparent !important;

    /* Filtros y efectos removidos para integración total en el fondo negro */
    filter: none !important;
    mix-blend-mode: normal !important;
    mask-image: none !important;
    -webkit-mask-image: none !important;
    box-shadow: none !important;
    
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.logo-premium-fusion:hover {
    transform: scale(1.02);
    filter: none !important;
}

.logo-fusion-glow {
    display: none;
}

.titulo-fusion-premium {
    font-family: 'Outfit', sans-serif;
    font-size: 4.5rem;
    font-weight: 900;
    letter-spacing: -4px;
    line-height: 0.9;
    margin: 0;
    color: #ffffff;
    /* Fallback: Texto blanco si el degradado falla */

    /* COLOR & GRADIENTE PREMIUM */
    background: linear-gradient(135deg, #ffffff 30%, var(--color-primario) 70%, #ffffff 90%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;

    /* FIX CRÍTICO: Si el navegador no soporta clip-text, se mantiene el color sólido blanco del fallback */
    text-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    /* animation: textShimmer 6s linear infinite; */
    /* DESACTIVADO: Causaba parpadeo */
}

@keyframes textShimmer {
    to {
        background-position: 200% center;
    }
}

@keyframes pulseGlow {
    from {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(0.9);
    }

    to {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes floatingLogo {

    0%,
    100% {
        transform: translateY(0) rotate(0);
    }

    33% {
        transform: translateY(-12px) rotate(-1deg);
    }

    66% {
        transform: translateY(-5px) rotate(1deg);
    }
}

.logo-circle-ia {
    width: 120px;
    height: 140px;
    background: url('../assets/logo_ie.jpg') no-repeat center/contain;
    /* background: var(--gradiente-main); <-- Removed old gradient */
    color: transparent;
    /* Hide text if any */
    /* border-radius: 50%; <-- Shield shape might not need circle mask, but kept if desired, or removed for full shield */
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0;
    /* Hide emoji */
    margin: 0 auto 1.5rem;
    filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.3));
    /* animation: floating 4s infinite ease-in-out; */
    /* DESACTIVADO: Causaba parpadeo */
}

.contenedor-cards-dual {
    display: flex;
    gap: 1.5rem;
    width: 100%;
    max-width: 1300px;
    perspective: 1000px;
}

.card-acceso {
    flex: 1;
    padding: 3rem 2.5rem;
    /* FIX RADICAL: Eliminamos backdrop-filter que causa recuadros blancos en Chromium al interactuar con selects */
    background: #0f172a;
    /* Fondo sólido oscuro */
    border-radius: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Cortar cualquier desborde glitcheado */

    /* Prevenir parpadeos */
    -webkit-font-smoothing: antialiased;
    isolation: isolate;
}

.card-acceso:hover {
    transform: translateY(-12px);
    border-color: var(--color-primario);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.5), 0 0 30px rgba(38, 166, 154, 0.1);
}

.card-acceso-badge {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: none;
    /* Menos agresivo */
    background: var(--color-primario);
    color: white;
    letter-spacing: 0.5px;
}

.card-acceso h3 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, rgba(255, 255, 255, 0.7));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-acceso p {
    opacity: 0.75;
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 3rem;
}

.campo-pro {
    margin-bottom: 1.5rem;
}

.campo-pro label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-primario);
    text-transform: none;
    /* Estética educativa profesional */
    letter-spacing: 0.3px;
    opacity: 0.9;
}

.in-pro {
    width: 100%;
    padding: 1.1rem 1.4rem;
    background: #000000 !important;
    /* Negro puro para evitar transparencias glitcheadas */
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    color: white !important;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    -webkit-appearance: none;
    appearance: none;
    outline: none;
}

/* Reincorporar flecha personalizada para selects (V219) */
select.in-pro {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2326a69a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: right 1.2rem center !important;
    background-size: 1.2rem !important;
    padding-right: 3.5rem !important;
    cursor: pointer;
}

.in-pro:focus {
    background: rgba(0, 0, 0, 0.4);
    border-color: var(--color-primario);
    box-shadow: 0 0 25px rgba(38, 166, 154, 0.15);
    outline: none;
    transform: translateY(-1px);
}

.btn-pro-est,
.btn-pro-doc {
    width: 100%;
    padding: 1.1rem;
    border: none;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1.05rem;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
    text-transform: none;
    letter-spacing: 0.3px;
}

.btn-pro-est {
    background: var(--gradiente-main);
    color: white;
    box-shadow: 0 10px 25px rgba(38, 166, 154, 0.25);
}

.btn-pro-est:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(38, 166, 154, 0.35);
}

.btn-pro-doc {
    background: rgba(255, 255, 255, 0.05);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-pro-doc:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.btn-pro-est:hover,
.btn-pro-doc:hover {
    transform: scale(1.02);
    filter: brightness(1.1);
}

.footer-card-reg {
    margin-top: 2.5rem;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.6;
}

.footer-card-reg button {
    background: none;
    border: none;
    color: var(--color-primario);
    font-weight: 800;
    cursor: pointer;
    text-decoration: underline;
}

.tips-admin {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
    opacity: 0.5;
}

.tips-admin small {
    line-height: 1.8;
}

.btn-tool-v75 {
    padding: 0.6rem 1rem;
    border-radius: 12px;
    color: white;
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
}

.btn-tool-v75:hover {
    transform: translateY(-3px) scale(1.05);
    filter: brightness(1.1);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.btn-tool-v75:active {
    transform: scale(0.95);
}

@media (max-width: 900px) {
    .titulo-fusion-premium {
        font-size: 2.5rem;
        letter-spacing: -2px;
    }

    .contenedor-cards-dual {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .card-acceso {
        padding: 2rem;
        width: 100%;
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .grid-registro-horizontal {
        grid-template-columns: 1fr !important;
        gap: 0.5rem !important;
    }

    .modal-c-clase {
        padding: 1.5rem !important;
    }
}

/* Scrollbar personalizado para el modal */
.modal-c-clase::-webkit-scrollbar {
    width: 8px;
}

.modal-c-clase::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

.modal-c-clase::-webkit-scrollbar-thumb {
    background: var(--color-primario);
    border-radius: 10px;
}

/* Fix for unresponsive modal */
.modal-v7 {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(15px);
    display: block;
    overflow-y: auto;
    padding: 2rem 1rem;
    z-index: 10005 !important;
    transition: all 0.4s ease;
}

.modal-v7.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
}

.modal-content-ie {
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    background: #1e293b;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 2.5rem;
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.5);
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primario) transparent;
}

.modal-content-ie::-webkit-scrollbar {
    width: 6px;
}

.modal-content-ie::-webkit-scrollbar-thumb {
    background: var(--color-primario);
    border-radius: 10px;
}

/* ESTILOS DE IMPRESIÓN FORMAL (V90) */
@media print {
    body * {
        visibility: hidden;
    }

    .modal-v7,
    .modal-v7 * {
        visibility: visible;
    }

    .modal-v7 {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        background: white !important;
        color: black !important;
    }

    .examen-layout aside,
    .examen-layout #btn-terminar-eval,
    .examen-layout button,
    .examen-layout input[type="radio"] {
        display: none !important;
    }

    .examen-layout {
        background: white !important;
        color: black !important;
        display: block !important;
        height: auto !important;
    }

    .examen-layout main {
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
        display: block !important;
    }

    .item-pregunta {
        background: white !important;
        border: 1px solid #ddd !important;
        color: black !important;
        page-break-inside: avoid;
        margin-bottom: 2rem !important;
        padding: 1.5rem !important;
    }

    .item-pregunta * {
        color: black !important;
    }

    /* Encabezado Institucional en Impresión */
    .examen-layout main::before {
        content: "";
        display: block;
        height: 100px;
        background: url('../assets/logo_ie.jpg') no-repeat center;
        background-size: contain;
        margin-bottom: 20px;
    }

    h1 {
        text-align: center;
        font-size: 24pt !important;
        margin-bottom: 30pt !important;
        text-transform: uppercase;
        border-bottom: 2pt solid black !important;
    }

    .badge-inst-preview {
        display: block !important;
        text-align: center;
        font-weight: bold;
        margin-bottom: 20pt;
    }
}