/**
 * EduIA Neural Loader — precargador global único (Facebook blue, claro / oscuro).
 */

/* ——— Legacy: id antiguo #eduiaPreloader (no debe existir en vistas actuales) ——— */
#eduiaPreloader {
    display: none !important;
    visibility: hidden !important;
}

#eduia-global-preloader.eduia-neural-loader {
    --pl-bg-light: #f0f2f5;
    --pl-card-light: #ffffff;
    --pl-blue: #1877f2;
    --pl-blue-soft: #4da3ff;
    --pl-text-light: #050505;
    --pl-muted-light: #65676b;

    --pl-bg-dark: #18191a;
    --pl-card-dark: #242526;
    --pl-blue-dark: #2d88ff;
    --pl-text-dark: #e4e6eb;
    --pl-muted-dark: #b0b3b8;

    position: fixed;
    inset: 0;
    z-index: 12050;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin: 0;
    padding: 24px 16px 28px;
    box-sizing: border-box;
    font-family: "Inter", system-ui, -apple-system, sans-serif;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    pointer-events: none;
    transition: opacity 0.42s ease, visibility 0s linear 0s;
}

#eduia-global-preloader.eduia-neural-loader::before,
#eduia-global-preloader.eduia-neural-loader::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
}

#eduia-global-preloader.eduia-neural-loader::before {
    background-image:
        linear-gradient(rgba(24, 119, 242, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(24, 119, 242, 0.04) 1px, transparent 1px);
    background-size: 28px 28px, 28px 28px;
    mask-image: radial-gradient(circle at 50% 40%, #000 25%, transparent 78%);
    opacity: 0.42;
}

#eduia-global-preloader.eduia-neural-loader::after {
    background: linear-gradient(180deg, transparent 0%, rgba(24, 119, 242, 0.05) 48%, transparent 100%);
    animation: eduia-ng-scan 4.8s linear infinite;
    opacity: 0.35;
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--light {
    color: var(--pl-text-light);
    background:
        radial-gradient(ellipse 90% 70% at 50% 28%, rgba(24, 119, 242, 0.09) 0%, transparent 55%),
        linear-gradient(180deg, #ffffff 0%, var(--pl-bg-light) 100%);
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--dark {
    color: var(--pl-text-dark);
    background:
        radial-gradient(ellipse 85% 65% at 50% 32%, rgba(45, 136, 255, 0.14) 0%, transparent 52%),
        radial-gradient(ellipse 70% 50% at 80% 88%, rgba(24, 119, 242, 0.08) 0%, transparent 45%),
        linear-gradient(165deg, var(--pl-bg-dark) 0%, #121314 55%, #050505 100%);
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--hide,
#eduia-global-preloader.eduia-neural-loader.is-hidden {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: opacity 0.4s ease, visibility 0s linear 0.4s;
}

#eduia-global-preloader.eduia-neural-loader.is-hidden {
    display: none !important;
}

/* Parche de seguridad — aliases legacy + genérico */
#eduiaNeuralLoader.is-hidden,
#eduia-global-preloader.is-hidden,
.eduia-neural-loader.is-hidden,
.eduia-loader.is-hidden {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

/* Login: visibilidad con delay (script inline) */
#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login {
    z-index: 10050;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login.is-visible {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.22s ease;
}

.eduia-neural-loader__product-name {
    margin: 0 0 16px;
    font-size: clamp(0.82rem, 2.2vw, 1rem);
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--pl-muted-light);
    text-align: center;
}

.eduia-neural-loader--dark .eduia-neural-loader__product-name {
    color: var(--pl-muted-dark);
}

.eduia-preloader__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: min(580px, 94vw);
    position: relative;
    z-index: 2;
}

/* Login: visualización aún más grande e impactante */
#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__inner {
    max-width: min(680px, 96vw);
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__viz {
    width: min(96vw, 520px);
    margin-bottom: 14px;
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__title {
    font-size: clamp(1.45rem, 4.6vw, 1.95rem);
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__sub {
    font-size: clamp(0.9rem, 3vw, 1.05rem);
}

#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__progress-wrap,
#eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__meta-row {
    width: min(340px, 86vw);
}

.eduia-preloader__viz {
    position: relative;
    width: min(94vw, 460px);
    height: auto;
    aspect-ratio: 320 / 220;
    margin-bottom: 12px;
    animation: eduia-preloader-viz-float 3.4s ease-in-out infinite;
    will-change: transform;
}

.eduia-preloader__viz::before {
    content: "";
    position: absolute;
    inset: -14%;
    z-index: 0;
    border-radius: 50%;
    transform-origin: 50% 50%;
    background: conic-gradient(
        from 220deg,
        transparent 0deg,
        rgba(24, 119, 242, 0.45) 72deg,
        rgba(139, 92, 246, 0.35) 160deg,
        rgba(79, 209, 255, 0.4) 260deg,
        transparent 360deg
    );
    animation: eduia-preloader-conic 5.5s linear infinite;
    filter: blur(22px);
    opacity: 0.85;
    pointer-events: none;
}

.eduia-preloader__viz::after {
    content: "";
    position: absolute;
    inset: -6%;
    z-index: 0;
    border-radius: 50%;
    background: radial-gradient(circle at 50% 42%, rgba(255, 255, 255, 0.14) 0%, transparent 62%);
    animation: eduia-preloader-core-pulse 2.4s ease-in-out infinite;
    pointer-events: none;
}

.eduia-preloader__orbit {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
    transform-origin: center center;
}

.eduia-preloader__orbit--outer {
    inset: -16%;
    border: 2px solid transparent;
    border-top-color: rgba(24, 119, 242, 0.55);
    border-right-color: rgba(77, 163, 255, 0.22);
    animation: eduia-preloader-orbit-spin 5s linear infinite;
    box-shadow: 0 0 28px rgba(24, 119, 242, 0.18);
}

.eduia-preloader__orbit--inner {
    inset: -6%;
    border: 1px dashed rgba(24, 119, 242, 0.35);
    animation: eduia-preloader-orbit-spin 2.8s linear infinite reverse;
    opacity: 0.75;
}

.eduia-preloader__neural {
    position: relative;
    z-index: 2;
    width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 14px 36px rgba(24, 119, 242, 0.35));
}

.eduia-neural-loader--dark .eduia-preloader__neural {
    filter: drop-shadow(0 10px 28px rgba(45, 136, 255, 0.25));
}

.eduia-preloader__brain {
    animation: eduia-ng-breathe 2s ease-in-out infinite;
}

@keyframes eduia-ng-breathe {
    0%,
    100% {
        opacity: 0.82;
    }
    50% {
        opacity: 1;
    }
}

.eduia-preloader__link {
    stroke-dasharray: 42 220;
    stroke-dashoffset: 0;
}

.eduia-preloader__link--a {
    animation:
        eduia-ng-dash 2.3s ease-in-out infinite,
        eduia-ng-flow 3.2s linear infinite;
}
.eduia-preloader__link--b {
    animation:
        eduia-ng-dash 2.3s ease-in-out 0.32s infinite,
        eduia-ng-flow 3.2s linear 0.4s infinite;
}
.eduia-preloader__link--c {
    animation:
        eduia-ng-dash 2.7s ease-in-out 0.18s infinite,
        eduia-ng-flow 3.6s linear 0.2s infinite reverse;
}
.eduia-preloader__link--d {
    animation:
        eduia-ng-dash 2.1s ease-in-out 0.45s infinite,
        eduia-ng-flow 2.8s linear 0.15s infinite;
}
.eduia-preloader__link--e {
    animation:
        eduia-ng-dash 2.5s ease-in-out 0.12s infinite,
        eduia-ng-flow 3s linear infinite;
}

@keyframes eduia-ng-dash {
    0%,
    100% {
        opacity: 0.38;
    }
    50% {
        opacity: 0.92;
    }
}

@keyframes eduia-ng-flow {
    to {
        stroke-dashoffset: -262;
    }
}

.eduia-preloader__node {
    animation: eduia-ng-node 1.9s ease-in-out infinite;
}

.eduia-preloader__node--2 {
    animation-delay: 0.25s;
}
.eduia-preloader__node--3 {
    animation-delay: 0.5s;
}
.eduia-preloader__node--4 {
    animation-delay: 0.35s;
}
.eduia-preloader__node--5 {
    animation-delay: 0.15s;
}

@keyframes eduia-ng-node {
    0%,
    100% {
        opacity: 0.45;
        transform: scale(0.92);
    }
    50% {
        opacity: 1;
        transform: scale(1.18);
    }
}

.eduia-preloader__pulse-ring {
    position: absolute;
    inset: 10% 16%;
    z-index: 2;
    border-radius: 50%;
    border: 3px solid rgba(24, 119, 242, 0.38);
    animation: eduia-ng-ring 2.1s ease-out infinite;
    pointer-events: none;
    box-shadow:
        0 0 20px rgba(24, 119, 242, 0.25),
        inset 0 0 14px rgba(77, 163, 255, 0.12);
}

.eduia-preloader__pulse-ring::after {
    content: "";
    position: absolute;
    inset: -28%;
    border-radius: 50%;
    border: 2px solid rgba(77, 163, 255, 0.28);
    animation: eduia-ng-ring-burst 2.1s ease-out infinite;
    animation-delay: 0.55s;
    opacity: 0;
}

.eduia-neural-loader--dark .eduia-preloader__pulse-ring {
    border-color: rgba(45, 136, 255, 0.48);
}

@keyframes eduia-ng-ring {
    0% {
        transform: scale(0.88);
        opacity: 0.65;
    }
    55% {
        opacity: 0.18;
    }
    100% {
        transform: scale(1.12);
        opacity: 0;
    }
}

@keyframes eduia-ng-ring-burst {
    0% {
        transform: scale(0.75);
        opacity: 0.55;
    }
    100% {
        transform: scale(1.35);
        opacity: 0;
    }
}

@keyframes eduia-preloader-viz-float {
    0%,
    100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-12px) scale(1.03);
    }
}

@keyframes eduia-preloader-conic {
    to {
        transform: rotate(360deg);
    }
}

@keyframes eduia-preloader-core-pulse {
    0%,
    100% {
        opacity: 0.35;
        transform: scale(1);
    }
    50% {
        opacity: 0.75;
        transform: scale(1.06);
    }
}

@keyframes eduia-preloader-orbit-spin {
    to {
        transform: rotate(360deg);
    }
}

.eduia-preloader__brand-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 6px;
    text-align: left;
}

.eduia-preloader__logo-ico {
    flex-shrink: 0;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(24, 119, 242, 0.18);
}

.eduia-preloader__brand-text {
    flex: 1;
    min-width: 0;
}

.eduia-preloader__title {
    font-weight: 800;
    font-size: clamp(1.28rem, 3.9vw, 1.62rem);
    letter-spacing: 0.08em;
    margin: 0;
}

.eduia-neural-loader--light .eduia-preloader__title {
    color: var(--pl-text-light);
}

.eduia-neural-loader--dark .eduia-preloader__title {
    color: var(--pl-text-dark);
}

.eduia-preloader__sub {
    margin: 6px 0 0;
    font-size: clamp(0.84rem, 2.75vw, 0.98rem);
    line-height: 1.4;
    min-height: 1.4em;
}

.eduia-neural-loader--light .eduia-preloader__sub {
    color: var(--pl-muted-light);
}

.eduia-neural-loader--dark .eduia-preloader__sub {
    color: var(--pl-muted-dark);
}

.eduia-preloader__sub span {
    display: inline-block;
    transition: opacity 0.18s ease;
}

.eduia-preloader__progress-wrap {
    width: min(300px, 80vw);
    height: 6px;
    margin-top: 16px;
    border-radius: 999px;
    background: rgba(24, 119, 242, 0.14);
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.06);
}

.eduia-neural-loader--dark .eduia-preloader__progress-wrap {
    background: rgba(255, 255, 255, 0.08);
}

.eduia-preloader__progress-bar {
    height: 100%;
    width: 0%;
    border-radius: inherit;
    background: linear-gradient(
        90deg,
        var(--pl-blue),
        var(--pl-blue-soft) 45%,
        rgba(139, 92, 246, 0.85) 100%
    );
    background-size: 200% 100%;
    animation: eduia-preloader-progress-shimmer 2.2s ease-in-out infinite;
    transition: width 0.26s ease-out;
    box-shadow: 0 0 18px rgba(24, 119, 242, 0.52);
}

@keyframes eduia-preloader-progress-shimmer {
    0%,
    100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.eduia-preloader__meta-row {
    width: min(300px, 80vw);
    margin-top: 9px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--pl-muted-light);
}

.eduia-neural-loader--dark .eduia-preloader__meta-row {
    color: var(--pl-muted-dark);
}

.eduia-preloader__meta-value {
    color: var(--pl-blue);
    font-weight: 700;
}

.eduia-neural-loader--dark .eduia-preloader__meta-value {
    color: var(--pl-blue-dark);
}

.eduia-preloader__tech-panel {
    width: min(320px, 84vw);
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.eduia-preloader__tech-chip {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-align: center;
    text-transform: uppercase;
    padding: 6px 7px;
    border-radius: 999px;
    border: 1px solid rgba(24, 119, 242, 0.22);
    background: rgba(24, 119, 242, 0.08);
    color: var(--pl-muted-light);
    transition: all 0.24s ease;
}

.eduia-neural-loader--dark .eduia-preloader__tech-chip {
    color: var(--pl-muted-dark);
    border-color: rgba(77, 163, 255, 0.25);
    background: rgba(77, 163, 255, 0.08);
}

.eduia-preloader__tech-chip.is-active {
    color: #fff;
    background: linear-gradient(90deg, var(--pl-blue), var(--pl-blue-soft));
    border-color: transparent;
    box-shadow: 0 2px 10px rgba(24, 119, 242, 0.4);
}

.eduia-neural-loader--dark .eduia-preloader__tech-chip.is-active {
    background: linear-gradient(90deg, var(--pl-blue-dark), var(--pl-blue));
}

.eduia-preloader__signals {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    max-width: min(360px, 92vw);
}

.eduia-preloader__signal {
    font-size: 0.68rem;
    line-height: 1.2;
    border-radius: 8px;
    padding: 4px 8px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    color: var(--pl-muted-light);
    background: rgba(255, 255, 255, 0.52);
}

.eduia-preloader__signal strong {
    color: var(--pl-blue);
    font-weight: 700;
}

.eduia-neural-loader--dark .eduia-preloader__signal {
    color: var(--pl-muted-dark);
    border-color: rgba(148, 163, 184, 0.22);
    background: rgba(36, 37, 38, 0.52);
}

.eduia-neural-loader--dark .eduia-preloader__signal strong {
    color: var(--pl-blue-dark);
}

.eduia-neural-loader--dark .eduia-preloader__progress-bar {
    background-image: linear-gradient(
        90deg,
        var(--pl-blue-dark),
        var(--pl-blue) 45%,
        rgba(167, 139, 250, 0.85) 100%
    );
    background-size: 200% 100%;
}

.eduia-preloader__dots {
    display: flex;
    gap: 6px;
    margin-top: 12px;
    justify-content: center;
}

.eduia-preloader__dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--pl-blue);
    opacity: 0.35;
    animation: eduia-ng-dot 1s ease-in-out infinite;
}

.eduia-neural-loader--dark .eduia-preloader__dots span {
    background: var(--pl-blue-dark);
}

.eduia-preloader__dots span:nth-child(2) {
    animation-delay: 0.18s;
}
.eduia-preloader__dots span:nth-child(3) {
    animation-delay: 0.36s;
}

@keyframes eduia-ng-dot {
    0%,
    100% {
        opacity: 0.28;
        transform: scale(0.92);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes eduia-ng-scan {
    0% {
        transform: translateY(-65%);
    }
    100% {
        transform: translateY(65%);
    }
}

.eduia-preloader__fallback {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.eduia-neural-loader--simple .eduia-preloader__viz,
.eduia-neural-loader--simple .eduia-neural-loader__product-name,
.eduia-neural-loader--simple .eduia-preloader__progress-wrap,
.eduia-neural-loader--simple .eduia-preloader__meta-row,
.eduia-neural-loader--simple .eduia-preloader__tech-panel,
.eduia-neural-loader--simple .eduia-preloader__signals,
.eduia-neural-loader--simple .eduia-preloader__dots {
    display: none;
}

.eduia-neural-loader--simple .eduia-preloader__fallback {
    display: flex;
}

.eduia-preloader__fallback-logo {
    font-weight: 800;
    font-size: 1.45rem;
    letter-spacing: 0.06em;
    background: linear-gradient(120deg, var(--pl-blue), var(--pl-blue-soft));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.eduia-neural-loader--dark .eduia-preloader__fallback-logo {
    background: linear-gradient(120deg, var(--pl-blue-dark), var(--pl-blue-soft));
    -webkit-background-clip: text;
    background-clip: text;
}

.eduia-preloader__fallback-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--pl-blue-soft);
    animation: eduia-ng-dot 1.1s ease-in-out infinite;
}

.eduia-neural-loader--3d-experimental .eduia-preloader__webgl {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.28;
}

@media (max-width: 767px) {
	#eduia-global-preloader.eduia-neural-loader {
		padding-left: max(8px, env(safe-area-inset-left, 0px));
		padding-right: max(8px, env(safe-area-inset-right, 0px));
	}

	#eduia-global-preloader .eduia-preloader__inner {
		width: 100%;
		max-width: none;
	}
}

@media (max-width: 480px) {
    .eduia-preloader__viz {
        width: min(94vw, 300px);
    }

    #eduia-global-preloader.eduia-neural-loader.eduia-neural-loader--login .eduia-preloader__viz {
        width: min(96vw, 340px);
    }

    .eduia-preloader__brand-row {
        flex-direction: column;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    #eduia-global-preloader.eduia-neural-loader {
        transition: opacity 0.22s ease;
    }

    #eduia-global-preloader.eduia-neural-loader::after {
        animation: none !important;
    }

    .eduia-preloader__viz {
        animation: none !important;
        transform: none !important;
        will-change: auto;
    }

    .eduia-preloader__viz::before,
    .eduia-preloader__viz::after {
        animation: none !important;
        transform: none !important;
    }

    .eduia-preloader__orbit {
        animation: none !important;
        transform: none !important;
        opacity: 0.35;
    }

    .eduia-preloader__brain,
    .eduia-preloader__link--a,
    .eduia-preloader__link--b,
    .eduia-preloader__link--c,
    .eduia-preloader__link--d,
    .eduia-preloader__link--e,
    .eduia-preloader__node,
    .eduia-preloader__pulse-ring,
    .eduia-preloader__pulse-ring::after,
    .eduia-preloader__dots span,
    .eduia-preloader__progress-bar {
        animation: none !important;
    }

    .eduia-preloader__pulse-ring {
        opacity: 0.32;
        transform: none;
    }

    .eduia-preloader__progress-bar {
        background: linear-gradient(90deg, var(--pl-blue), var(--pl-blue-soft));
        background-size: auto;
    }

    .eduia-neural-loader--dark .eduia-preloader__progress-bar {
        background: linear-gradient(90deg, var(--pl-blue-dark), var(--pl-blue));
    }
}