/* Sandbox — matches _design/zain-os/project/Sandbox.html 1:1
   All classes scoped with `sb-` prefix. */

.sb-canvas { padding-top:14px; }

/* Page head */
.sb-page-hd { display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; gap:14px; }
.sb-page-hd-l { display:flex; align-items:center; gap:14px; min-width:0; }
.sb-page-hd h1 { font-size:22px; font-weight:500; letter-spacing:-0.01em; line-height:1; margin:0; }
.sb-badge { display:inline-flex; align-items:center; gap:6px; padding:3px 10px; background:rgba(201,154,82,0.12); color:#A37936; border:1px solid rgba(201,154,82,0.3); border-radius:var(--r-pill); font-size:10.5px; font-family:var(--font-mono); font-weight:500; text-transform:uppercase; letter-spacing:0.08em; }
.sb-badge::before { content:''; width:5px; height:5px; border-radius:50%; background:#C99A52; }
.sb-meta { font-size:12.5px; color:var(--text-secondary); }
.sb-meta .sep { margin:0 8px; color:var(--text-tertiary); }
.sb-meta .ok { color:#6A8A70; }

.sb-hd-ctrls { display:flex; align-items:center; gap:8px; }
.sb-hd-btn { height:28px; padding:0 12px; background:var(--card); border:1px solid var(--border); border-radius:var(--r-sm); color:var(--text); font-size:12px; font-weight:500; cursor:pointer; font-family:inherit; display:inline-flex; align-items:center; gap:5px; }
.sb-hd-btn:hover { border-color:var(--brand-dim); color:var(--brand); }
.sb-hd-btn svg { width:11px; height:11px; }
.sb-hd-btn.primary { background:var(--brand); border-color:var(--brand); color:#fff; font-weight:600; }
.sb-hd-btn.primary:hover { background:var(--brand-hover); border-color:var(--brand-hover); color:#fff; }

/* 3-pane layout */
.sb-work { display:grid; grid-template-columns: 260px 1fr 360px; gap:16px; height: calc(100vh - 64px - 60px); min-height: 540px; }
@media (max-width: 1200px) { .sb-work { grid-template-columns: 240px 1fr 320px; } }

/* ===== Personas (left) ===== */
.sb-personas { background:var(--card); border:1px solid var(--border-light); border-radius:var(--r-sm); display:flex; flex-direction:column; overflow:hidden; }
.sb-personas-hd { padding:14px 16px 10px; border-bottom:1px solid var(--border-light); display:flex; align-items:center; gap:8px; }
.sb-personas-hd h4 { margin:0; font-size:10.5px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-tertiary); font-family:var(--font-mono); font-weight:500; }
.sb-personas-hd .sp { flex:1; }
.sb-personas-hd button { width:22px; height:22px; border-radius:4px; border:0; background:transparent; color:var(--text-secondary); cursor:pointer; }
.sb-personas-hd button:hover { background:var(--hover); color:var(--text); }
.sb-personas-hd button svg { width:12px; height:12px; }

.sb-persona-list { flex:1; overflow-y:auto; padding:6px; }
.sb-persona { padding:10px 10px 10px 11px; border-radius:var(--r-sm); border-left:2px solid transparent; cursor:pointer; margin-bottom:2px; position:relative; }
.sb-persona:hover { background:var(--hover); }
.sb-persona.is-active { background:var(--brand-soft); border-left-color:var(--brand); }
.sb-persona .p-top { display:flex; align-items:center; gap:8px; margin-bottom:3px; }
.sb-persona .p-name { font-size:12.5px; font-weight:500; color:var(--text); letter-spacing:-0.005em; flex:1; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sb-persona .p-status { width:6px; height:6px; border-radius:50%; flex-shrink:0; }
.sb-persona .p-status.ok { background:#6A8A70; }
.sb-persona .p-status.handoff { background:#C99A52; }
.sb-persona .p-status.stuck { background:#C8553D; }
.sb-persona .p-status.idle { background:var(--text-tertiary); }
.sb-persona .p-intent { font-size:10.5px; color:var(--text-tertiary); font-family:var(--font-mono); text-transform:uppercase; letter-spacing:0.06em; margin-bottom:4px; }
.sb-persona .p-preview { font-size:11.5px; color:var(--text-secondary); line-height:1.35; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sb-persona .p-preview[dir=rtl] { font-family:var(--font-arabic); text-align:right; }
.sb-persona .p-foot { display:flex; align-items:center; gap:6px; margin-top:5px; }
.sb-persona .p-phone { font-size:10px; color:var(--text-tertiary); font-family:var(--font-mono); }
.sb-persona .p-lang { font-size:10px; color:var(--text-tertiary); padding:0 5px; border-radius:2px; background:var(--bg); font-family:var(--font-mono); text-transform:uppercase; }
.sb-persona .p-turns { margin-left:auto; font-size:10px; color:var(--text-tertiary); font-family:var(--font-mono); }

.sb-sec-divider { padding:12px 14px 6px; font-size:10px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-tertiary); font-family:var(--font-mono); font-weight:500; }

/* New chat-row layout (replaces the old persona card) — flat list with
   a hover-to-delete button. */
.sb-chat-row { padding:10px 12px; border-radius:var(--r-sm); border-left:2px solid transparent; cursor:pointer; margin-bottom:2px; position:relative; transition: background 120ms; }
.sb-chat-row:hover { background:var(--hover); }
.sb-chat-row.is-active { background:var(--brand-soft); border-left-color:var(--brand); }
.sb-chat-row .cr-name { font-size:13px; font-weight:500; color:var(--text); margin-bottom:4px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; padding-right:24px; letter-spacing:-0.005em; }
.sb-chat-row .cr-meta { display:flex; gap:8px; font-size:10.5px; color:var(--text-tertiary); font-family:var(--font-mono); }
.sb-chat-row .cr-phone, .sb-chat-row .cr-lang { font-variant-numeric:tabular-nums; }
.sb-chat-row .cr-lang { padding:0 5px; border-radius:2px; background:var(--bg); text-transform:uppercase; }
.sb-chat-row .cr-del {
  position:absolute; top:8px; right:6px;
  width:24px; height:24px;
  display:inline-flex; align-items:center; justify-content:center;
  border:0; background:transparent; color:var(--text-tertiary);
  border-radius:4px; cursor:pointer;
  opacity:0; transition: opacity 120ms, color 120ms, background 120ms;
}
.sb-chat-row:hover .cr-del { opacity:1; }
.sb-chat-row .cr-del:hover { background:rgba(200,85,61,0.15); color:#C8553D; }
.sb-chat-row .cr-del svg { display:block; }

.sb-empty { padding:32px 16px; text-align:center; font-size:12px; color:var(--text-tertiary); }

/* Undo toast — shown after deleting a chat instead of a browser confirm. */
.sb-undo-toast { display:flex; align-items:center; gap:14px; }
.sb-undo-toast .sb-undo-msg { font-size:13px; color:var(--text); }
.sb-undo-toast .sb-undo-btn {
  background:transparent;
  border:1px solid var(--brand);
  color:var(--brand);
  padding:5px 14px;
  border-radius:6px;
  cursor:pointer;
  font-size:12px;
  font-weight:600;
  font-family:inherit;
  text-transform:uppercase;
  letter-spacing:0.04em;
  transition: background 120ms;
}
.sb-undo-toast .sb-undo-btn:hover { background:rgba(232,97,58,0.10); }

/* ===== Chat (center) ===== */
.sb-chat { background:var(--card); border:1px solid var(--border-light); border-radius:var(--r-sm); display:flex; flex-direction:column; overflow:hidden; min-width:0; }
.sb-chat-hd { padding:12px 16px; border-bottom:1px solid var(--border-light); display:flex; align-items:center; gap:12px; }
.sb-chat-hd .avatar { width:28px; height:28px; border-radius:50%; background:var(--brand-soft); color:var(--brand); display:flex; align-items:center; justify-content:center; font-size:11px; font-weight:600; font-family:var(--font-mono); flex-shrink:0; }
.sb-chat-hd .who { flex:1; min-width:0; }
.sb-chat-hd .who .name { font-size:13px; font-weight:500; color:var(--text); letter-spacing:-0.005em; }
.sb-chat-hd .who .meta { font-size:11px; color:var(--text-secondary); margin-top:1px; font-family:var(--font-mono); display:flex; align-items:center; gap:5px; flex-wrap:wrap; }
.sb-chat-hd .who .meta .sep { color:var(--text-tertiary); }
.sb-chat-hd .c-acts { display:flex; gap:6px; }
.sb-chat-hd .c-acts button { height:26px; padding:0 9px; background:var(--card); border:1px solid var(--border); border-radius:var(--r-sm); color:var(--text-secondary); font-size:11.5px; font-weight:500; cursor:pointer; font-family:inherit; display:inline-flex; align-items:center; gap:4px; }
.sb-chat-hd .c-acts button:hover { color:var(--text); border-color:var(--brand-dim); }
.sb-chat-hd .c-acts button svg { width:11px; height:11px; }

/* Scenario runner strip */
.sb-scenario { padding:10px 16px; border-bottom:1px solid var(--border-light); background:var(--bg); display:flex; align-items:center; gap:10px; }
.sb-scenario .lbl { font-size:10px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-tertiary); font-family:var(--font-mono); font-weight:500; flex-shrink:0; }
.sb-scenario select { height:26px; padding:0 26px 0 10px; background:var(--card); border:1px solid var(--border); border-radius:var(--r-sm); color:var(--text); font-family:inherit; font-size:11.5px; outline:none; cursor:pointer; flex:1; min-width:0; }
.sb-scenario select:focus { border-color:var(--brand); }
.sb-scenario .run { height:26px; padding:0 12px; background:var(--brand); border:0; border-radius:var(--r-sm); color:#fff; font-size:11.5px; font-weight:600; cursor:pointer; font-family:inherit; display:inline-flex; align-items:center; gap:5px; }
.sb-scenario .run:hover { background:var(--brand-hover); }
.sb-scenario .run svg { width:10px; height:10px; }
.sb-scenario .run:disabled { opacity:0.5; cursor:not-allowed; }

.sb-stream { flex:1; overflow-y:auto; padding:18px 20px; display:flex; flex-direction:column; gap:10px; background:var(--bg); }

.sb-day-sep { align-self:center; font-size:10px; color:var(--text-tertiary); text-transform:uppercase; letter-spacing:0.08em; font-family:var(--font-mono); background:var(--card); padding:3px 10px; border-radius:var(--r-pill); border:1px solid var(--border-light); margin:6px 0 2px; }

.sb-bubble { max-width:74%; padding:8px 12px 7px; border-radius:10px; position:relative; line-height:1.45; font-size:13px; word-wrap:break-word; }
.sb-bubble .time { font-size:10px; color:var(--text-tertiary); font-family:var(--font-mono); font-variant-numeric:tabular-nums; margin-top:3px; }
.sb-bubble.lead { align-self:flex-end; background:var(--brand); color:#fff; border-bottom-right-radius:3px; }
.sb-bubble.lead .time { color:rgba(255,255,255,0.75); text-align:right; }
.sb-bubble.agent { align-self:flex-start; background:var(--card); color:var(--text); border:1px solid var(--border-light); border-bottom-left-radius:3px; }
.sb-bubble[dir=rtl] { font-family:var(--font-arabic); text-align:right; }
.sb-bubble .voice { display:inline-flex; align-items:center; gap:5px; font-size:11px; color:inherit; opacity:0.85; margin-right:5px; }
.sb-bubble .voice svg { width:11px; height:11px; }

/* PDF card */
.sb-pdf { align-self:flex-start; display:flex; align-items:center; gap:10px; padding:10px 12px; background:var(--card); border:1px solid var(--border-light); border-radius:10px; border-bottom-left-radius:3px; max-width:70%; cursor:pointer; text-decoration:none; color:inherit; }
.sb-pdf:hover { border-color:var(--brand-dim); }
.sb-pdf .pdf-i { width:30px; height:36px; background:rgba(200,80,60,0.08); color:#C8553D; border-radius:3px; display:flex; align-items:center; justify-content:center; font-size:10px; font-family:var(--font-mono); font-weight:600; flex-shrink:0; }
.sb-pdf .pdf-meta .n { font-size:12px; font-weight:500; color:var(--text); letter-spacing:-0.005em; }
.sb-pdf .pdf-meta .s { font-size:10.5px; color:var(--text-secondary); font-family:var(--font-mono); margin-top:1px; }

/* Inline image card (auto-send unit photos) */
.sb-img { align-self:flex-start; display:block; max-width:60%; border-radius:10px; border-bottom-left-radius:3px; overflow:hidden; border:1px solid var(--border-light); background:var(--card); }
.sb-img:hover { border-color:var(--brand-dim); }
.sb-img img { display:block; width:100%; height:auto; }

/* System pill */
.sb-sys { align-self:center; font-size:11px; color:var(--text-secondary); background:var(--card); padding:4px 12px; border-radius:var(--r-pill); border:1px solid var(--border-light); font-family:var(--font-mono); letter-spacing:0.02em; max-width:70%; text-align:center; }
.sb-sys.handoff { color:#A37936; background:rgba(201,154,82,0.08); border-color:rgba(201,154,82,0.3); }
.sb-sys.suppressed { color:var(--text-tertiary); font-style:italic; }
.sb-sys.warn { color:#A37936; background:rgba(201,154,82,0.10); border-color:rgba(201,154,82,0.35); font-family:var(--font-sans); letter-spacing:0; max-width:90%; text-align:left; padding:8px 14px; }
.sb-sys .show-raw { color:var(--brand); cursor:pointer; margin-left:5px; text-decoration:underline; text-decoration-style:dotted; }

/* Typing */
.sb-typing { align-self:flex-start; background:var(--card); border:1px solid var(--border-light); padding:10px 14px; border-radius:10px; border-bottom-left-radius:3px; display:flex; gap:3px; }
.sb-typing span { width:5px; height:5px; border-radius:50%; background:var(--text-tertiary); animation:sb-bounce 1.2s infinite; }
.sb-typing span:nth-child(2) { animation-delay:0.15s; }
.sb-typing span:nth-child(3) { animation-delay:0.3s; }
@keyframes sb-bounce { 0%,60%,100%{transform:translateY(0);opacity:0.4} 30%{transform:translateY(-4px);opacity:1} }

/* Input bar */
.sb-input { padding:10px 12px; border-top:1px solid var(--border-light); display:flex; gap:8px; align-items:flex-end; background:var(--card); }
.sb-input .txt { flex:1; min-width:0; min-height:36px; max-height:120px; padding:8px 12px; background:var(--bg); border:1px solid var(--border); border-radius:var(--r-sm); color:var(--text); font-family:inherit; font-size:13px; outline:none; resize:none; line-height:1.4; }
.sb-input .txt:focus { border-color:var(--brand); }
.sb-input button { height:36px; border-radius:var(--r-sm); cursor:pointer; font-family:inherit; display:inline-flex; align-items:center; justify-content:center; flex-shrink:0; border:1px solid var(--border); background:var(--card); color:var(--text-secondary); }
.sb-input button:hover { border-color:var(--brand-dim); color:var(--brand); }
.sb-input .btn-attach, .sb-input .btn-mic { width:36px; }
.sb-input .btn-mic.is-recording { background: rgba(200,85,61,0.12); border-color:#C8553D; color:#C8553D; animation: sb-pulse-rec 1.4s ease-in-out infinite; }
@keyframes sb-pulse-rec { 0%,100%{box-shadow:0 0 0 0 rgba(200,85,61,0.4)} 50%{box-shadow:0 0 0 4px rgba(200,85,61,0.0)} }
.sb-input .btn-send { background:var(--brand); border-color:var(--brand); color:#fff; padding:0 14px; font-weight:600; font-size:12.5px; gap:6px; }
.sb-input .btn-send:hover { background:var(--brand-hover); border-color:var(--brand-hover); color:#fff; }
.sb-input .btn-send:disabled { opacity:0.6; cursor:not-allowed; }
.sb-input .btn-queue { padding:0 12px; font-size:11.5px; font-weight:500; }
.sb-input .btn-queue:hover { color:var(--brand); border-color:var(--brand-dim); }

/* ── Burst queue: messages staged for one combined send ── */
#sb-burst-queue { padding:0 12px; }
#sb-burst-queue:not(:empty) { padding:8px 12px 0 12px; border-top:1px dashed var(--border-light); background:var(--card); }
.sb-burst-hdr { display:flex; align-items:baseline; gap:8px; margin-bottom:6px; }
.sb-burst-label { font-size:11px; color:var(--text-tertiary); font-family:var(--font-mono); text-transform:uppercase; letter-spacing:0.04em; flex:1; }
.sb-burst-clear { background:transparent; border:0; font-size:11px; color:var(--text-tertiary); cursor:pointer; padding:0 4px; }
.sb-burst-clear:hover { color:var(--danger); }
.sb-burst-list { display:flex; flex-direction:column; gap:4px; padding-bottom:6px; }
.sb-burst-item { display:flex; align-items:center; gap:8px; padding:5px 8px; background:rgba(232,97,58,0.06); border:1px solid var(--border-light); border-radius:var(--r-sm); font-size:12px; }
.sb-burst-idx { color:var(--text-tertiary); font-family:var(--font-mono); font-size:10px; flex-shrink:0; }
.sb-burst-text { flex:1; min-width:0; color:var(--text); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.sb-burst-x { background:transparent; border:0; color:var(--text-tertiary); cursor:pointer; font-size:11px; padding:0 4px; }
.sb-burst-x:hover { color:var(--danger); }

/* ── Recording state (red strip with timer + cancel + stop) ── */
.sb-input .sb-rec-cancel,
.sb-input .sb-rec-stop {
  height:36px; border-radius:var(--r-sm); display:inline-flex; align-items:center;
  justify-content:center; cursor:pointer; flex-shrink:0; gap:6px; padding:0 12px;
  font-family:inherit; font-size:12.5px; font-weight:500;
}
.sb-input .sb-rec-cancel { width:36px; padding:0; background:var(--card); border:1px solid var(--border); color:var(--text-tertiary); }
.sb-input .sb-rec-cancel:hover { border-color:#C8553D; color:#C8553D; background:rgba(200,85,61,0.08); }
.sb-input .sb-rec-stop { background:#C8553D; border:1px solid #C8553D; color:#fff; }
.sb-input .sb-rec-stop:hover { background:#a84432; border-color:#a84432; color:#fff; }
.sb-input .sb-rec-meta { flex:1; display:flex; align-items:center; gap:10px; min-width:0; padding:0 14px; height:36px;
  background:rgba(200,85,61,0.08); border:1px solid rgba(200,85,61,0.3); border-radius:var(--r-sm); }
.sb-input .sb-rec-pulse { width:10px; height:10px; border-radius:50%; background:#C8553D; flex-shrink:0;
  animation: sb-pulse-rec 1.4s ease-in-out infinite; }
.sb-input .sb-rec-label { font-size:12px; color:#C8553D; font-weight:500; }
.sb-input .sb-rec-timer { margin-left:auto; font-family:var(--font-mono); font-size:12px; color:#C8553D;
  font-variant-numeric:tabular-nums; }

/* ── Preview state (custom player + cancel + send) ── */
.sb-input .sb-prev-player {
  flex:1; display:flex; align-items:center; gap:10px; padding:0 12px 0 8px; height:44px;
  background:var(--bg); border:1px solid var(--border-light); border-radius:var(--r-sm);
}
.sb-input .sb-prev-player .sb-voice-player { flex:1; padding:0; background:transparent; border:0; }
.sb-input .sb-prev-dur { font-family:var(--font-mono); font-size:11px; color:var(--text-secondary);
  font-variant-numeric:tabular-nums; flex-shrink:0; }
.sb-input .sb-prev-send { background:var(--brand); border:1px solid var(--brand); color:#fff;
  padding:0 14px; font-weight:600; font-size:12.5px; gap:6px; height:44px;
  display:inline-flex; align-items:center; cursor:pointer; border-radius:var(--r-sm); }
.sb-input .sb-prev-send svg { width:14px; height:14px; }
.sb-input .sb-prev-send:hover { background:var(--brand-hover); border-color:var(--brand-hover); }

/* ── Custom voice-message player (bubble + preview share styles) ── */
.sb-voice-player {
  display:flex; align-items:center; gap:10px; min-width:200px; max-width:280px;
  padding:6px 10px 6px 6px; border-radius:var(--r-pill);
}
.sb-vp-play {
  flex-shrink:0; width:32px; height:32px; border-radius:50%;
  border:0; background:rgba(255,255,255,0.18); color:#fff;
  display:inline-flex; align-items:center; justify-content:center; cursor:pointer;
  transition:background 120ms ease;
}
.sb-vp-play:hover { background:rgba(255,255,255,0.28); }
.sb-bubble.agent .sb-vp-play { background:var(--brand); color:#fff; }
.sb-bubble.agent .sb-vp-play:hover { background:var(--brand-hover); }
.sb-input .sb-vp-play { background:var(--brand); color:#fff; }
.sb-input .sb-vp-play:hover { background:var(--brand-hover); }
.sb-vp-track {
  flex:1; height:18px; position:relative; cursor:pointer;
  display:flex; align-items:center;
}
.sb-vp-track::before {
  content:''; position:absolute; left:0; right:0; top:50%; transform:translateY(-50%);
  height:3px; border-radius:2px; background:rgba(255,255,255,0.25);
}
.sb-bubble.agent .sb-vp-track::before { background:var(--border); }
.sb-input .sb-vp-track::before { background:var(--border); }
.sb-vp-track-fill {
  position:absolute; left:0; top:50%; transform:translateY(-50%);
  height:3px; border-radius:2px; background:#fff; width:0%;
  transition:width 60ms linear; pointer-events:none;
}
.sb-bubble.agent .sb-vp-track-fill { background:var(--brand); }
.sb-input .sb-vp-track-fill { background:var(--brand); }
.sb-vp-track-knob {
  position:absolute; top:50%; transform:translate(-50%, -50%);
  width:11px; height:11px; border-radius:50%; background:#fff;
  pointer-events:none; left:0%;
  transition:left 60ms linear;
}
.sb-bubble.agent .sb-vp-track-knob { background:var(--brand); box-shadow:0 0 0 2px var(--card); }
.sb-input .sb-vp-track-knob { background:var(--brand); box-shadow:0 0 0 2px var(--bg); }
.sb-vp-time {
  font-family:var(--font-mono); font-size:11px; opacity:0.85;
  font-variant-numeric:tabular-nums; flex-shrink:0; min-width:32px; text-align:right;
}
.sb-vp-audio { display:none; }

.sb-bubble.has-voice { padding:6px 8px 6px 6px; max-width:78%; }
.sb-bubble.has-voice .sb-voice-player { padding:0; min-width:200px; }
.sb-bubble .sb-voice-caption { margin:6px 8px 0; padding-top:6px; border-top:1px solid rgba(255,255,255,0.15); font-size:12px; opacity:0.92; line-height:1.45; }
.sb-bubble.agent .sb-voice-caption { border-top-color:var(--border-light); }
.sb-bubble.has-voice .time { padding:0 8px; }
.sb-input button svg { width:14px; height:14px; }

/* ===== Debug inspector (right) ===== */
.sb-inspector { background:var(--card); border:1px solid var(--border-light); border-radius:var(--r-sm); display:flex; flex-direction:column; overflow:hidden; }
.sb-ins-hd { padding:12px 16px; border-bottom:1px solid var(--border-light); display:flex; align-items:center; gap:8px; }
.sb-ins-hd h4 { margin:0; font-size:10.5px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-tertiary); font-family:var(--font-mono); font-weight:500; }
.sb-ins-hd .sp { flex:1; }
.sb-ins-hd .turn { font-size:10.5px; color:var(--text-secondary); font-family:var(--font-mono); }
.sb-ins-tabs { display:flex; padding:0 10px; border-bottom:1px solid var(--border-light); }
.sb-ins-tabs .tab { padding:8px 10px; font-size:11.5px; font-weight:500; color:var(--text-secondary); cursor:pointer; border-bottom:2px solid transparent; margin-right:2px; background:transparent; border-top:0; border-left:0; border-right:0; font-family:inherit; }
.sb-ins-tabs .tab:hover { color:var(--text); }
.sb-ins-tabs .tab.is-active { color:var(--brand); border-bottom-color:var(--brand); }

.sb-ins-body { flex:1; overflow-y:auto; padding:14px 16px; }
.sb-ins-section { margin-bottom:18px; }
.sb-ins-section:last-child { margin-bottom:0; }
.sb-ins-section h5 { margin:0 0 8px; font-size:10px; text-transform:uppercase; letter-spacing:0.08em; color:var(--text-tertiary); font-family:var(--font-mono); font-weight:500; }

.sb-kv { display:grid; grid-template-columns: 96px 1fr; gap:6px 10px; font-size:11.5px; }
.sb-kv .k { color:var(--text-tertiary); text-transform:uppercase; letter-spacing:0.04em; font-size:10.5px; font-family:var(--font-mono); padding-top:1px; }
.sb-kv .v { color:var(--text); font-family:var(--font-mono); font-variant-numeric:tabular-nums; word-break:break-word; }
.sb-kv .v.ok { color:#6A8A70; }
.sb-kv .v.warn { color:#A37936; }
.sb-kv .v.brand { color:var(--brand); font-weight:500; }
.sb-kv .v.danger { color:#C8553D; }

.sb-pill { display:inline-block; font-size:10.5px; font-family:var(--font-mono); padding:2px 8px; border-radius:var(--r-pill); background:var(--bg); color:var(--text); border:1px solid var(--border-light); text-transform:uppercase; letter-spacing:0.04em; }
.sb-pill.brand { background:var(--brand-soft); color:var(--brand); border-color:rgba(232,97,58,0.2); }
.sb-pill.warn { background:rgba(201,154,82,0.1); color:#A37936; border-color:rgba(201,154,82,0.25); }
.sb-pill.ok { background:rgba(106,138,112,0.1); color:#6A8A70; border-color:rgba(106,138,112,0.25); }

.sb-tool-call { background:var(--bg); border:1px solid var(--border-light); border-radius:var(--r-sm); padding:8px 10px; margin-bottom:6px; }
.sb-tool-call .tc-head { display:flex; align-items:center; gap:8px; }
.sb-tool-call .tc-name { font-size:11.5px; color:var(--brand); font-family:var(--font-mono); font-weight:500; }
.sb-tool-call .tc-status { margin-left:auto; font-size:10px; text-transform:uppercase; letter-spacing:0.06em; font-family:var(--font-mono); color:var(--text-tertiary); }
.sb-tool-call .tc-status.ok { color:#6A8A70; }
.sb-tool-call pre { margin:6px 0 0; font-size:10.5px; color:var(--text-secondary); font-family:var(--font-mono); background:transparent; padding:0; white-space:pre-wrap; word-break:break-word; line-height:1.55; }

.sb-accordion { border-top:1px solid var(--border-light); margin-top:10px; padding-top:10px; }
.sb-accordion summary { cursor:pointer; font-size:10.5px; color:var(--text-secondary); font-family:var(--font-mono); text-transform:uppercase; letter-spacing:0.06em; list-style:none; display:flex; align-items:center; gap:5px; padding:4px 0; }
.sb-accordion summary::-webkit-details-marker { display:none; }
.sb-accordion summary::before { content:'▸'; font-size:9px; color:var(--text-tertiary); transition:transform 120ms; }
.sb-accordion[open] summary::before { transform:rotate(90deg); }
.sb-accordion summary:hover { color:var(--text); }
.sb-accordion pre { margin:8px 0 0; padding:10px 12px; background:var(--bg); border:1px solid var(--border-light); border-radius:var(--r-sm); font-size:10.5px; color:var(--text); font-family:var(--font-mono); white-space:pre-wrap; word-break:break-word; line-height:1.55; max-height:240px; overflow-y:auto; }

.sb-empty-ins { padding:40px 20px; text-align:center; color:var(--text-tertiary); font-size:12px; }

/* Unit focus selector */
.sb-unit-focus { display:inline-flex; align-items:center; gap:6px; padding:3px 8px; background:var(--bg); border:1px solid var(--border-light); border-radius:var(--r-pill); font-size:10.5px; font-family:var(--font-mono); color:var(--text-secondary); cursor:pointer; }
.sb-unit-focus:hover { border-color:var(--brand-dim); color:var(--text); }
.sb-unit-focus select { background:transparent; border:0; color:inherit; font-family:inherit; font-size:inherit; outline:none; cursor:pointer; padding:0; max-width:120px; }

/* ============================================================
   Responsive (additive only — desktop unchanged above)
   ============================================================ */

@media (max-width: 1024px) {
  /* Stack the 3-pane layout vertically. Inspector at the bottom. */
  .sb-work {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 0;
    gap: 12px;
  }
  .sb-personas { max-height: 240px; }
  .sb-persona-list { max-height: 200px; }
  .sb-chat { min-height: 60vh; }
  .sb-inspector { max-height: 50vh; }
}

@media (max-width: 640px) {
  /* Page header */
  .sb-page-hd { flex-direction: column; align-items: flex-start; gap: 10px; }
  .sb-page-hd-l { flex-wrap: wrap; }
  .sb-hd-ctrls { width: 100%; flex-wrap: wrap; }

  /* Personas: shorter, scroll list */
  .sb-personas { max-height: 200px; }
  .sb-persona-list { max-height: 160px; }

  /* Chat */
  .sb-chat-hd { padding: 10px 12px; gap: 8px; flex-wrap: wrap; }
  .sb-chat-hd .c-acts { width: 100%; }
  .sb-stream { padding: 12px 12px; }
  .sb-bubble { max-width: 86%; }
  .sb-pdf, .sb-img { max-width: 86%; }

  /* Scenario strip wraps */
  .sb-scenario { flex-wrap: wrap; padding: 8px 12px; }
  .sb-scenario select { min-width: 0; }

  /* Input bar */
  .sb-input { padding: 8px 8px; gap: 6px; }
  .sb-input .txt { font-size: 16px; min-height: 40px; }
  .sb-input .btn-attach, .sb-input .btn-mic { width: 40px; height: 40px; }
  .sb-input .btn-send { height: 40px; padding: 0 12px; }
  .sb-input .btn-queue { height: 40px; padding: 0 10px; }

  /* Inspector */
  .sb-inspector { max-height: 60vh; }
  .sb-ins-body { padding: 12px 12px; }
  .sb-kv { grid-template-columns: 80px 1fr; }
}

@media (hover: none) and (pointer: coarse) {
  /* Hover-only delete button: always visible on touch */
  .sb-chat-row .cr-del { opacity: 1; }

  /* Touch tap targets */
  .sb-hd-btn { min-height: 36px; }
  .sb-chat-hd .c-acts button { min-height: 36px; }
  .sb-scenario .run { min-height: 36px; }
  .sb-ins-tabs .tab { min-height: 36px; padding: 10px 12px; }
  .sb-personas-hd button { width: 32px; height: 32px; }
  .sb-input .btn-attach, .sb-input .btn-mic { min-height: 40px; min-width: 40px; }
  .sb-chat-row { min-height: 56px; }
  .sb-chat-row .cr-del { width: 32px; height: 32px; }
  .sb-input .sb-rec-cancel,
  .sb-input .sb-rec-stop { min-height: 40px; }
  .sb-unit-focus { min-height: 32px; padding: 6px 10px; }
}

/* ============================================================
   Phone-specific overrides — refines the 640px block above with
   a few extra polish bits (kept additive: stays AFTER the earlier
   block so it wins on cascade).
   ============================================================ */
@media (max-width: 640px) {
  /* Persona / chat row text is the primary list — give it room */
  .sb-chat-row { padding: 12px 14px; }
  .sb-chat-row .cr-name { font-size: 14px; padding-right: 32px; }
  .sb-chat-row .cr-meta { font-size: 11px; }

  /* Personas section header pads more comfortably */
  .sb-personas-hd { padding: 12px 14px 10px; }

  /* Inspector key-value: stack k above v on very narrow screens
     so long compound values don't get squeezed into 80px column */
  .sb-kv {
    grid-template-columns: 1fr;
    gap: 2px 0;
  }
  .sb-kv .k { padding-top: 4px; }
  .sb-kv .v { padding-bottom: 6px; border-bottom: 1px solid var(--border-light); }
  .sb-kv .v:last-child { border-bottom: 0; }

  /* Chat header action buttons grow tappable */
  .sb-chat-hd .c-acts button { min-height: 40px; padding: 0 12px; font-size: var(--fs-12); }
  .sb-chat-hd .c-acts button svg { width: 13px; height: 13px; }

  /* Burst queue items: more vertical breathing room */
  .sb-burst-item { padding: 8px 10px; font-size: var(--fs-13); }
  .sb-burst-x { min-width: 28px; min-height: 28px; }

  /* Scenario selector full width, run button stacks underneath */
  .sb-scenario { gap: 8px; }
  .sb-scenario select { width: 100%; height: 36px; font-size: 16px; }
  .sb-scenario .run { min-height: 36px; padding: 0 14px; }

  /* Unit-focus selector: tap-friendly */
  .sb-unit-focus { padding: 6px 10px; min-height: 32px; }
  .sb-unit-focus select { font-size: var(--fs-12); max-width: 160px; }

  /* Bubble copy: bump body font slightly for readability */
  .sb-bubble { font-size: var(--fs-14); }
  .sb-sys { font-size: var(--fs-12); }
}

/* iPhone SE / very narrow phones */
@media (max-width: 360px) {
  .sb-page-hd h1 { font-size: 18px; }
  .sb-badge { padding: 2px 8px; font-size: 10px; }
  .sb-bubble { max-width: 92%; }
  .sb-pdf, .sb-img { max-width: 92%; }
  .sb-input .btn-send span { display: none; }
}