.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
}

.auth-card {
    width: 100%;
    border: 1px solid color-mix(in srgb, var(--rsj-border) 86%, transparent);
    border-radius: 2rem;
    background: color-mix(in srgb, var(--rsj-surface-solid) 92%, transparent);
    box-shadow: var(--rsj-shadow-lg);
    overflow: hidden;
}

.auth-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(420px, 540px);
}

.auth-showcase {
    position: relative;
    padding: 3rem;
    background:
        radial-gradient(circle at top left, rgba(66, 133, 244, 0.22), transparent 34rem),
        radial-gradient(circle at bottom right, rgba(15, 157, 88, 0.16), transparent 26rem),
        linear-gradient(160deg, color-mix(in srgb, var(--rsj-surface-alt) 92%, white 8%) 0%, color-mix(in srgb, var(--rsj-surface-solid) 78%, transparent) 100%);
    border-right: 1px solid color-mix(in srgb, var(--rsj-border) 90%, transparent);
}

.auth-showcase::after {
    content: "";
    position: absolute;
    inset: 1.5rem;
    border: 1px solid color-mix(in srgb, var(--rsj-border) 56%, transparent);
    border-radius: 1.5rem;
    pointer-events: none;
}

.auth-showcase-inner,
.auth-form-panel-inner {
    position: relative;
    z-index: 1;
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 2rem;
}

.auth-brand-mark {
    width: 4.25rem;
    height: 4.25rem;
    padding: 0.35rem;
    border-radius: 1.35rem;
    background: rgba(255, 255, 255, 0.74);
    box-shadow: 0 1rem 2rem rgba(40, 75, 138, 0.12);
}

.auth-brand-mark img {
    display: block;
    width: 100%;
    height: 100%;
}

.auth-brand-caption {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--rsj-accent);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.auth-brand-name {
    margin: 0;
    color: var(--rsj-text);
    font-family: "Segoe UI Variable", "Segoe UI", "Trebuchet MS", sans-serif;
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.auth-heading {
    margin: 0 0 0.8rem;
    color: var(--rsj-text);
    font-family: "Segoe UI Variable", "Segoe UI", "Trebuchet MS", sans-serif;
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.04em;
}

.auth-lead {
    max-width: 32rem;
    margin: 0;
    color: var(--rsj-text-soft);
    font-size: 1.02rem;
    line-height: 1.7;
}

.auth-showcase-note {
    max-width: 30rem;
    margin-top: 1.6rem;
    padding: 1rem 1.15rem;
    border: 1px solid color-mix(in srgb, var(--rsj-border) 88%, transparent);
    border-radius: 1.15rem;
    background: rgba(255, 255, 255, 0.48);
    color: var(--rsj-muted);
    line-height: 1.6;
}

.auth-form-panel {
    padding: 2rem;
    background: color-mix(in srgb, var(--rsj-surface-solid) 94%, transparent);
}

.auth-form-panel-inner {
    max-width: 28rem;
    margin: 0 auto;
}

.auth-alert {
    margin-bottom: 1rem;
    border: 0;
    border-radius: 1rem;
    box-shadow: var(--rsj-shadow-sm);
}

.auth-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
    padding: 0.45rem;
    margin-bottom: 1.5rem;
    border-radius: 1.3rem;
    background: var(--rsj-surface-alt);
}

.auth-tabs .nav-link {
    border: 0;
    border-radius: 1rem;
    padding: 0.85rem 1rem;
    color: var(--rsj-muted);
    font-weight: 600;
}

.auth-tabs .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, #4285f4 0%, #2f67d8 55%, #1a73e8 100%);
    box-shadow: 0 0.9rem 1.8rem rgba(47, 103, 216, 0.28);
}

.auth-pane-header {
    margin-bottom: 1.2rem;
}

.auth-pane-header h2 {
    margin-bottom: 0.35rem;
    color: var(--rsj-text);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.auth-pane-header p {
    margin: 0;
    color: var(--rsj-muted);
}

.auth-card .form-floating > .form-control {
    height: 3.8rem;
    min-height: 3.8rem;
    padding-top: 1.5rem;
    border: 1px solid var(--rsj-border);
    border-radius: 1rem;
    background: var(--rsj-input-bg);
    color: var(--rsj-text);
    box-shadow: none;
}

.auth-card .form-floating > .form-control:focus {
    border-color: color-mix(in srgb, var(--rsj-accent) 68%, white);
    box-shadow: 0 0 0 0.25rem color-mix(in srgb, var(--rsj-accent-soft) 70%, transparent);
}

.auth-card .form-floating > label {
    color: var(--rsj-muted);
    padding: 1rem 1rem;
}

.auth-card .form-floating > .form-control::placeholder {
    color: transparent;
}

.auth-submit {
    min-height: 3.5rem;
    margin-top: 0.3rem;
    border: 0;
    border-radius: 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    box-shadow: 0 0.9rem 1.8rem rgba(47, 103, 216, 0.22);
}

.auth-submit.btn-success {
    box-shadow: 0 0.9rem 1.8rem rgba(28, 150, 97, 0.2);
}

.auth-footnote {
    margin-top: 1rem;
    color: var(--rsj-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

:root[data-theme='dark'] .auth-card {
    background: color-mix(in srgb, var(--rsj-surface-solid) 96%, transparent);
}

:root[data-theme='dark'] .auth-showcase {
    background:
        radial-gradient(circle at top left, rgba(137, 182, 255, 0.2), transparent 34rem),
        radial-gradient(circle at bottom right, rgba(81, 207, 161, 0.12), transparent 26rem),
        linear-gradient(160deg, rgba(26, 42, 67, 0.96) 0%, rgba(20, 33, 54, 0.98) 100%);
}

:root[data-theme='dark'] .auth-brand-mark,
:root[data-theme='dark'] .auth-showcase-note {
    background: rgba(20, 33, 54, 0.72);
}

@media (max-width: 991.98px) {
    .auth-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .auth-showcase {
        border-right: 0;
        border-bottom: 1px solid color-mix(in srgb, var(--rsj-border) 90%, transparent);
    }
}

@media (max-width: 767.98px) {
    .auth-shell {
        padding-top: 1rem;
        padding-bottom: 1rem;
        align-items: flex-start;
    }

    .auth-showcase,
    .auth-form-panel {
        padding: 1.35rem;
    }

    .auth-showcase::after {
        inset: 0.9rem;
    }

    .auth-showcase-note {
        margin-top: 1.2rem;
        padding: 0.9rem 1rem;
    }
}