.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 28px;
}

.auth-shell {
    width: min(1120px, 100%);
    display: grid;
    grid-template-columns: 480px minmax(0, 1fr);
    border: 1px solid var(--line);
    border-radius: 10px;
    overflow: hidden;
    background: rgba(12, 16, 24, .9);
    box-shadow: var(--shadow);
}

.auth-panel {
    padding: 34px;
    border-right: 1px solid var(--line-soft);
}

.auth-copy {
    margin-top: 42px;
    margin-bottom: 22px;
}

.auth-copy h1 {
    margin: 8px 0 10px;
    max-width: 390px;
    font-size: 32px;
    line-height: 1.08;
}

.auth-copy p {
    color: var(--muted);
    line-height: 1.6;
}

.auth-form,
.social-stack {
    display: grid;
    gap: 12px;
}

.form-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
    color: var(--muted);
}

.social-stack {
    margin-top: 16px;
}

.social-stack button {
    border: 1px solid var(--line);
    border-radius: 7px;
    background: transparent;
    color: var(--soft);
    min-height: 40px;
}

.auth-switch {
    color: var(--muted);
    font-size: 14px;
}

.auth-switch a,
.form-row a { color: var(--accent); }

.auth-context {
    padding: 30px;
    background: #0a0e15;
}

.auth-preview-top {
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 13px;
}

.auth-preview-top strong { color: var(--text); }

.auth-preview-grid {
    margin-top: 90px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.signal-strip {
    grid-column: 1 / -1;
    display: grid;
    gap: 9px;
}

.signal-strip span {
    height: 7px;
    border-radius: 4px;
    background: #172231;
}

.signal-strip span:nth-child(2) { width: 76%; background: #182d2e; }
.signal-strip span:nth-child(3) { width: 52%; background: #242239; }

.preview-thread {
    border: 1px solid var(--line-soft);
    border-radius: 8px;
    background: #101722;
    padding: 16px;
}

.preview-thread p,
.preview-thread small { color: var(--muted); }
.preview-thread strong { display: block; margin: 6px 0; }

@media (max-width: 920px) {
    .auth-shell { grid-template-columns: 1fr; }
    .auth-context { display: none; }
    .auth-panel { border-right: 0; padding: 24px; }
}