.auth-shell {
    min-height: 100vh;
    background: var(--bg-page);
    color: var(--text-main);
}

.auth-shell-inner {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
}

.auth-container {
    max-width: 28rem;
}

.auth-logo {
    width: 3.5rem;
    height: 3.5rem;
}

.auth-card {
    background: var(--color-surface-white);
    border: 1px solid var(--color-border-neutral);
    border-radius: 1.5rem;
    box-shadow: var(--shadow-soft);
}

.auth-brand {
    color: var(--color-ink-secondary);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.auth-title {
    color: var(--color-ink);
    font-size: clamp(1.55rem, 2vw, 1.9rem);
    font-weight: 800;
    letter-spacing: -.03em;
}

.auth-subtitle {
    color: var(--color-ink-secondary);
    font-size: .95rem;
}

.auth-link {
    color: var(--color-ink);
}

.auth-link:hover {
    color: var(--color-ink);
    opacity: .8;
}

.auth-shell .form-control {
    min-height: 3.1rem;
    border-radius: 0.95rem;
    border-color: var(--color-border-neutral);
    padding: 0.85rem 1rem;
    box-shadow: none;
    transition: border-color 100ms ease-out;
}

.auth-shell .form-control:focus {
    border-color: var(--color-ink);
    box-shadow: none;
}

.auth-shell .form-check-input {
    border-radius: 0.4rem;
}

.auth-shell .form-check-input:checked {
    background-color: var(--color-ink);
    border-color: var(--color-ink);
}

/* Split auth shell (login / register) */

.auth-split-container {
    max-width: 64rem;
}

.auth-split-shell {
    display: flex;
    flex-wrap: wrap;
    border-radius: 1.5rem;
    overflow: hidden;
    border: 1px solid var(--color-border-neutral);
    box-shadow: var(--shadow-soft);
    background: var(--color-surface-white);
}

.auth-split-form {
    flex: 1 1 26rem;
    padding: 2.75rem 3rem;
}

.auth-split-brand {
    display: flex;
    align-items: center;
    gap: .65rem;
    margin-bottom: 2rem;
}

.auth-split-logo {
    height: 2.25rem;
    width: auto;
}

.auth-split-brand-name {
    display: block;
    color: var(--color-ink);
    font-weight: 500;
    font-size: 1.05rem;
    line-height: 1.3;
}

.auth-split-brand-tag {
    display: block;
    color: var(--color-ink-secondary);
    font-size: .68rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.auth-split-panel {
    flex: 1 1 20rem;
    background: var(--color-surface-dark);
}

.auth-split-panel-inner {
    height: 100%;
    padding: 2.75rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 2rem;
}

.auth-split-panel-badge {
    font-size: .7rem;
    padding: .3rem .75rem;
    font-weight: 500;
}

.auth-split-panel-heading {
    color: var(--color-text-on-dark);
    font-size: 1.375rem;
    font-weight: 500;
    line-height: 1.5;
    margin: 1.25rem 0 0;
}

.auth-split-panel-support {
    color: var(--color-text-on-dark-secondary);
    font-size: .9rem;
    line-height: 1.6;
    margin: .75rem 0 0;
}

.auth-split-panel-features {
    display: flex;
    flex-direction: column;
    gap: .85rem;
    border-top: 1px solid var(--color-border-on-dark);
    padding-top: 1.25rem;
}

.auth-split-panel-feature-title {
    color: var(--color-text-on-dark);
    font-size: .85rem;
    font-weight: 500;
    margin: 0;
}

.auth-split-panel-feature-text {
    color: var(--color-text-on-dark-secondary);
    font-size: .8rem;
    margin: .15rem 0 0;
}

.auth-split-form .form-label {
    color: var(--color-ink-secondary);
    font-size: .85rem;
}

.auth-split-form {
    --auth-input-dark: #14132B;
}

.auth-shell .auth-split-form .form-control {
    background: var(--auth-input-dark);
    color: var(--color-text-on-dark);
    border-color: var(--auth-input-dark);
}

.auth-split-form .form-control::placeholder {
    color: var(--color-text-on-dark-secondary);
}

.auth-shell .auth-split-form .form-control:focus {
    background: var(--auth-input-dark);
    color: var(--color-text-on-dark);
    border-color: var(--color-accent-teal-bg);
    box-shadow: none;
}

.btn-teal-soft {
    background: var(--color-accent-teal-bg);
    border: 0;
    color: var(--color-accent-teal-text);
    border-radius: 12px;
    padding: .72rem 1rem;
    font-weight: 700;
    transition: transform 100ms ease-out, filter 100ms ease-out;
}

.btn-teal-soft:active {
    transform: scale(0.98);
}

.btn-teal-soft:hover,
.btn-teal-soft:focus {
    color: var(--color-accent-teal-text);
    filter: brightness(1.08);
}

@media (max-width: 991.98px) {
    .auth-split-form,
    .auth-split-panel-inner {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 575.98px) {
    .auth-split-panel-features {
        display: none;
    }
}