.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-card)}.card--elevated{box-shadow:0 24px 60px rgba(15,23,42,.12)}.form-card{max-width:none}.page-header{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;margin-bottom:24px}.page-subtitle{max-width:680px}.page-header__actions{display:flex;gap:12px;flex-wrap:wrap}.messages-stack{margin-bottom:16px}.message-banner{padding:14px 16px;border-radius:14px;border:1px solid var(--color-border);background:#fff}.message-banner--success{border-color:#bbf7d0;background:#f0fdf4}.message-banner--error{border-color:#fecaca;background:#fef2f2}.breadcrumbs{display:flex;gap:8px;font-size:.9rem;color:var(--color-muted);margin-bottom:6px}.color-chip{display:inline-block;width:14px;height:14px;border-radius:999px;vertical-align:middle;border:1px solid rgba(0,0,0,.08)}.preview-panel,.summary-panel{align-self:start}.theme-preview-card{padding:20px;border-radius:20px;background:linear-gradient(135deg,var(--color-surface-soft),var(--color-surface));border:1px solid var(--color-border)}