:root {
    --brand-deep: #680000;
}
.auth-shell {
    display: grid;
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    min-height: 100vh;
    min-height: 100dvh;
}
.auth-brand {
    position: relative;
    isolation: isolate;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
    background: var(--brand-deep);
    color: #ffffff;
    overflow: hidden;
}
.auth-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image: radial-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px);
    background-size: 24px 24px;
    -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 72%);
    mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 72%);
    pointer-events: none;
}
body.dark .auth-brand {
    border-right: 1px solid rgba(255, 255, 255, .08);
}
.brand-stage {
    --stage: clamp(240px, min(30vw, 56vh), 440px);
    position: relative;
    width: var(--stage);
    height: var(--stage);
    flex-shrink: 0;
    animation: stageIn 1s var(--ease) both;
}
@keyframes stageIn {
    from {
        opacity: 0;
        transform: scale(.94);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.brand-stage::before,
.brand-stage::after {
    content: '';
    position: absolute;
    pointer-events: none;
}
.brand-stage::before {
    top: 50%;
    left: -14%;
    right: -14%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .18) 22%, rgba(255, 255, 255, .18) 78%, transparent);
}
.brand-stage::after {
    left: 50%;
    top: -14%;
    bottom: -14%;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, .12) 22%, rgba(255, 255, 255, .12) 78%, transparent);
}
/* Anéis */
.orbit {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .22);
    animation: orbitFade 1.2s var(--ease) both, orbitSpin 60s linear infinite;
}
.orbit-1 {
    inset: 0;
}
.orbit-2 {
    inset: 15%;
    border-color: rgba(255, 255, 255, .3);
    animation-delay: .15s, 0s;
    animation-duration: 1.2s, 38s;
    animation-direction: normal, reverse;
}
.orbit-3 {
    inset: 30%;
    border: 2px solid transparent;
    border-top-color: var(--primary-soft, #fdecec);
    animation-delay: .3s, 0s;
    animation-duration: 1.2s, 9s;
}
@keyframes orbitFade {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes orbitSpin {
    to {
        transform: rotate(360deg);
    }
}
.orbit-dot {
    position: absolute;
    top: -4px;
    left: 50%;
    width: 7px;
    height: 7px;
    margin-left: -3.5px;
    border-radius: 50%;
    background: #ffffff;
}
.orbit-2 .orbit-dot {
    top: auto;
    bottom: -4px;
    width: 6px;
    height: 6px;
    margin-left: -3px;
    background: rgba(255, 255, 255, .6);
}
.north-marker {
    position: absolute;
    top: -6.5px;
    left: 50%;
    width: 13px;
    height: 13px;
    margin-left: -6.5px;
    border-radius: 50%;
    background: var(--primary-soft, #fdecec);
    border: 3px solid var(--brand-deep);
    box-sizing: border-box;
    animation: orbitFade 1s var(--ease) .6s both;
}
.pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22%;
    aspect-ratio: 1;
    margin: -11% 0 0 -11%;
    border-radius: 24%;
    border: 1px solid var(--primary-soft, #fdecec);
    opacity: 0;
    animation: pulseRing 4s var(--ease) 1.2s infinite;
}
.pulse-2 {
    animation-delay: 3.2s;
}
@keyframes pulseRing {
    0% {
        opacity: .55;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(3.1);
    }
}
.brand-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 22%;
    aspect-ratio: 1;
    margin: -11% 0 0 -11%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border: 1px solid rgba(255, 255, 255, .22);
    box-sizing: border-box;
    border-radius: 24%;
    animation: logoIn .8s var(--ease) .35s both;
}
.brand-logo img {
    width: 56%;
    height: 56%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}
@keyframes logoIn {
    from {
        opacity: 0;
        transform: scale(.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.brand-wordmark {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 40px;
    text-align: center;
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .5em;
    text-indent: .5em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .6);
    animation: orbitFade 1s var(--ease) .9s both;
}
.auth-panel {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 56px 32px;
    background: var(--card-light, #ffffff);
}
body.dark .auth-panel {
    background: var(--bg-dark);
}
@media (max-width: 991.98px) {
    .auth-shell {
        grid-template-columns: 1fr;
    }
    .auth-brand {
        display: none;
    }
    .auth-panel {
        padding: 64px 20px 32px;
        background: var(--bg-light);
    }
    body.dark .auth-panel {
        background: var(--bg-dark);
    }
}
@media (prefers-reduced-motion: reduce) {
    .brand-stage,
    .orbit,
    .north-marker,
    .brand-logo,
    .brand-wordmark {
        animation: none !important;
    }
    .pulse {
        display: none;
    }
}