.playground-root{max-width:1080px}
.playground-heading{margin-bottom:1.4rem}
.playground-tabs{display:flex;gap:.45rem;margin-bottom:1rem;border-bottom:1px solid var(--line,#ddd7ca)}
.playground-tab{appearance:none;background:none;border:0;border-bottom:2px solid transparent;color:var(--muted,#746f66);cursor:pointer;padding:.75rem 1rem;font:inherit}
.playground-tab.active{border-bottom-color:var(--ink,#1b1a18);color:var(--ink,#1b1a18);font-weight:700}
.playground-panel{background:var(--surface,#fff);border:1px solid var(--line,#ddd7ca);border-radius:12px;padding:1.25rem}
.playground-session-head{align-items:center;display:flex;gap:1rem;justify-content:space-between;margin-bottom:1rem}.playground-session-head small{color:var(--muted,#746f66);display:block;font-size:.75rem;margin-top:.25rem}.playground-session-head code{font-size:.72rem}
.playground-field{display:grid;gap:.45rem;margin-bottom:1rem}
.playground-field span{font-size:.85rem;font-weight:700}
.playground-field select,.playground-field textarea,.playground-field input{background:inherit;border:1px solid var(--line,#c8c1b6);border-radius:8px;color:inherit;font:inherit;padding:.7rem}
.playground-actions{align-items:center;display:flex;gap:1rem;justify-content:flex-end}
.playground-status{color:var(--muted,#746f66);font-size:.9rem;margin-right:auto}
.playground-status.error{color:#a5372a}
.playground-output{background:#181715;color:#f7f4ec;border-radius:8px;margin:1rem 0 0;max-height:520px;overflow:auto;padding:1rem}
.playground-composer{margin-top:1rem}.playground-reasoning{border-left:2px solid #8ca9c7;color:#c1cad4;font-size:.85rem;margin:.6rem 0;padding-left:.7rem}.playground-reasoning summary{cursor:pointer;font-weight:700;margin-bottom:.4rem}
.playground-message{border-bottom:1px solid rgba(255,255,255,.16);padding:.8rem 0;white-space:pre-wrap}.playground-message:last-child{border-bottom:0}.playground-message strong{display:block;font-size:.78rem;letter-spacing:.04em;margin-bottom:.35rem;opacity:.72}.playground-message.user strong{color:#ffb27a}.playground-message.assistant strong{color:#b7d8ff}
.playground-placeholder{color:var(--muted,#746f66);margin:2rem 0;text-align:center}