/* ── Auth Shell ── */
.auth-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

/* ── Left panel (brand/visual side) ── */
.auth-panel-brand {
    background-color: var(--color-gray-900);
    background-image: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-12);
    color: var(--text-inverse);
    position: relative;
    overflow: hidden;
}

.auth-panel-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(37,99,235,.25) 0%, transparent 60%);
    pointer-events: none;
}

.auth-brand-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-inverse);
    position: relative;
    z-index: 1;
}

.auth-brand-quote {
    position: relative;
    z-index: 1;
}

.auth-brand-quote blockquote {
    font-size: var(--text-xl);
    font-weight: var(--font-medium);
    line-height: var(--leading-relaxed);
    color: var(--color-gray-100);
    margin-bottom: var(--space-4);
}

.auth-brand-quote cite {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    font-style: normal;
}

/* ── Right panel (form side) ── */
.auth-panel-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12) var(--space-16);
    background-color: var(--surface-page);
}

.auth-form-container {
    width: 100%;
    max-width: 400px;
}

.auth-form-header {
    margin-bottom: var(--space-8);
}

.auth-form-header h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.auth-form-header p {
    color: var(--text-secondary);
    font-size: var(--text-base);
}

.auth-form-footer {
    margin-top: var(--space-6);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .auth-shell {
        grid-template-columns: 1fr;
    }

    .auth-panel-brand {
        display: none;
    }

    .auth-panel-form {
        padding: var(--space-8) var(--space-6);
    }
}