:root {
  --bg: #f6f5f2; --panel: #ffffff; --panel-2: #f0eee9; --line: #e2dfd8; --text: #1a1b1e; --muted: #6b6f78;
  --accent: #2f6bff; --accent-ink: #ffffff; --ok: #1f9d55; --warn: #c27c0e; --bad: #d23f3f;
  --ok-bg: #e7f6ee; --warn-bg: #fdf3e1; --bad-bg: #fdeaea; --accent-bg: #e8efff;
  --radius: 16px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 6px 24px rgba(0,0,0,.06);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --tab-h: 64px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --panel: #171a20; --panel-2: #1e222a; --line: #2a2f39; --text: #eceef2; --muted: #9097a3;
    --accent: #5b8cff; --accent-ink: #0b0d11; --ok: #3ccf82; --warn: #f0b252; --bad: #ff6b6b;
    --ok-bg: #12291d; --warn-bg: #2d2412; --bad-bg: #2e1616; --accent-bg: #18223a;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 30px rgba(0,0,0,.35);
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.45 var(--font); }
body { min-height: 100dvh; overscroll-behavior-y: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: var(--accent); }

.page { max-width: 680px; margin: 0 auto; padding: calc(env(safe-area-inset-top) + 12px) 16px
        calc(var(--tab-h) + env(safe-area-inset-bottom) + 132px); }
.page.no-composer { padding-bottom: calc(var(--tab-h) + env(safe-area-inset-bottom) + 24px); }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 4px 0 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 22px; letter-spacing: -.01em; }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.conn { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted);
        padding: 6px 10px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 25%, transparent); }
.dot.busy { background: var(--accent); animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { opacity: .35; } }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px;
        box-shadow: var(--shadow); margin-bottom: 12px; }
.card h2 { margin: 0 0 4px; font-size: 17px; }
.label { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.row { display: flex; align-items: center; gap: 10px; }
.spread { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.ellipsis { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.section-title { margin: 22px 4px 8px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px;
       padding: 0 16px; border-radius: 12px; font-weight: 600; background: var(--panel-2); border: 1px solid var(--line); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; }
.btn.good { background: var(--ok); color: #fff; border-color: transparent; }
.btn.bad { background: var(--bad-bg); color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, transparent); }
.btn.small { min-height: 34px; padding: 0 12px; font-size: 14px; border-radius: 10px; }
.btn:disabled { opacity: .5; }
.btn-row { display: flex; gap: 8px; margin-top: 12px; }
.btn-row .btn { flex: 1; }

.pill { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 3px 9px;
        border-radius: 999px; background: var(--panel-2); color: var(--muted); white-space: nowrap; }
.pill.running, .pill.waiting { background: var(--accent-bg); color: var(--accent); }
.pill.done { background: var(--ok-bg); color: var(--ok); }
.pill.failed, .pill.cancelled { background: var(--bad-bg); color: var(--bad); }
.pill.blocked, .pill.paused, .pill.interrupted, .pill.scheduled { background: var(--warn-bg); color: var(--warn); }
.tier-send, .tier-danger { background: var(--bad-bg); color: var(--bad); }
.tier-change { background: var(--warn-bg); color: var(--warn); }
.tier-act { background: var(--accent-bg); color: var(--accent); }

.approval { border-color: color-mix(in srgb, var(--warn) 45%, var(--line)); }
.approval.tier-danger-card, .approval.tier-send-card { border-color: color-mix(in srgb, var(--bad) 50%, var(--line)); }
.approval .summary { font-size: 16px; margin: 8px 0 4px; word-break: break-word; }
textarea.answer, .field { width: 100%; border-radius: 12px; border: 1px solid var(--line); background: var(--bg);
                          padding: 12px; outline: none; resize: none; }
.field:focus, textarea:focus { border-color: var(--accent); }

.task { display: flex; gap: 12px; align-items: center; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.task:last-child { border-bottom: 0; }
.list { padding: 0; overflow: hidden; }
.task .title { font-weight: 600; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 9px 14px; border-radius: 999px; background: var(--panel); border: 1px solid var(--line); font-size: 14px; }

.composer { position: fixed; left: 0; right: 0; bottom: calc(var(--tab-h) + env(safe-area-inset-bottom));
            padding: 10px 12px; background: color-mix(in srgb, var(--bg) 88%, transparent);
            backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
            border-top: 1px solid var(--line); z-index: 20; }
.composer .inner { max-width: 680px; margin: 0 auto; }
.composer form { display: flex; gap: 8px; align-items: flex-end; }
.composer textarea { flex: 1; max-height: 140px; border-radius: 22px; border: 1px solid var(--line);
                     background: var(--panel); padding: 11px 16px; resize: none; outline: none; }
.send { width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: var(--accent-ink);
        display: grid; place-items: center; flex: none; font-size: 20px; }
.icon-btn { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; flex: none;
            background: var(--panel); border: 1px solid var(--line); font-size: 18px; }
.icon-btn.on { background: var(--accent-bg); border-color: var(--accent); }
.sched { display: flex; gap: 8px; margin-bottom: 8px; }
.sched .field { padding: 9px 12px; }

.tabs { position: fixed; left: 0; right: 0; bottom: 0; height: calc(var(--tab-h) + env(safe-area-inset-bottom));
        padding-bottom: env(safe-area-inset-bottom); display: flex; background: var(--panel);
        border-top: 1px solid var(--line); z-index: 30; }
.tabs button { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
               font-size: 12px; color: var(--muted); position: relative; }
.tabs button.active { color: var(--accent); font-weight: 600; }
.tabs .ic { font-size: 21px; line-height: 1; }
.badge { position: absolute; top: 8px; left: calc(50% + 6px); min-width: 18px; height: 18px; border-radius: 9px;
         background: var(--bad); color: #fff; font-size: 11px; display: grid; place-items: center; padding: 0 5px; }

/* task timeline */
.back { display: inline-flex; align-items: center; gap: 4px; color: var(--accent); font-weight: 600; min-height: 44px; }
.timeline { display: flex; flex-direction: column; gap: 10px; }
.bubble { padding: 12px 14px; border-radius: 16px; max-width: 92%; white-space: pre-wrap; word-break: break-word; }
.bubble.user { align-self: flex-end; background: var(--accent); color: var(--accent-ink); border-bottom-right-radius: 6px; }
.bubble.agent { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); border-bottom-left-radius: 6px; }
.note { color: var(--muted); font-size: 14px; font-style: italic; padding: 0 4px; white-space: pre-wrap; }
.step { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; padding: 8px 10px; border-radius: 12px;
        background: var(--panel); border: 1px solid var(--line); }
.step .ic { width: 22px; text-align: center; flex: none; }
.step.fail { border-color: color-mix(in srgb, var(--bad) 40%, var(--line)); }
.step details summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.step pre { white-space: pre-wrap; word-break: break-word; font: 12px/1.45 var(--mono); margin: 6px 0 0;
            max-height: 220px; overflow: auto; background: var(--bg); padding: 8px; border-radius: 8px; }
.thumb { display: block; margin-top: 8px; width: 100%; max-width: 360px; border-radius: 10px; border: 1px solid var(--line); }
.sys { text-align: center; font-size: 12px; color: var(--muted); }

/* screen */
.screen-wrap { position: relative; border-radius: 14px; overflow: hidden; background: #000; border: 1px solid var(--line);
               touch-action: manipulation; user-select: none; -webkit-user-select: none; }
.screen-wrap img { display: block; width: 100%; height: auto; }
.screen-wrap .ripple { position: absolute; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%;
                       border: 3px solid var(--accent); pointer-events: none; animation: ripple .5s ease-out forwards; }
@keyframes ripple { to { transform: scale(1.8); opacity: 0; } }
.screen-empty { aspect-ratio: 16/10; display: grid; place-items: center; color: #aaa; font-size: 14px; padding: 20px; text-align: center; }
.seg { display: flex; background: var(--panel-2); border-radius: 12px; padding: 3px; gap: 3px; }
.seg button { flex: 1; min-height: 36px; border-radius: 9px; font-size: 14px; color: var(--muted); }
.seg button.on { background: var(--panel); color: var(--text); font-weight: 600; box-shadow: var(--shadow); }
.keys { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.keys button { min-height: 42px; border-radius: 10px; background: var(--panel); border: 1px solid var(--line); font-size: 14px; }
.keys button.on { background: var(--accent-bg); border-color: var(--accent); color: var(--accent); }
.banner { padding: 12px 14px; border-radius: 12px; background: var(--accent-bg); color: var(--text);
          display: flex; align-items: center; gap: 10px; margin-bottom: 10px; font-size: 14px; }

.policy-opt { display: block; padding: 12px; border-radius: 12px; border: 1px solid var(--line); margin-top: 8px; }
.policy-opt.on { border-color: var(--accent); background: var(--accent-bg); }
.policy-opt b { display: block; }
.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--tab-h) + env(safe-area-inset-bottom) + 90px);
         background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 12px; font-size: 14px; z-index: 50;
         max-width: 90vw; box-shadow: var(--shadow); }
.center { min-height: 100dvh; display: grid; place-items: center; padding: 24px; }
.pair { width: 100%; max-width: 380px; text-align: center; }
.pair .code { text-align: center; font: 600 26px/1 var(--mono); letter-spacing: .2em; text-transform: uppercase; }
.lightbox { position: fixed; inset: 0; background: rgba(0,0,0,.88); display: grid; place-items: center; z-index: 60; padding: 12px; }
.lightbox img { max-width: 100%; max-height: 100%; border-radius: 8px; }

.taskchip { display: flex; align-items: center; gap: 8px; width: 100%; margin-top: 8px; padding: 10px 12px; text-align: left;
            border-radius: 12px; background: var(--panel-2); border: 1px solid var(--line); font-size: 14px; color: var(--text); }
.timeline > .taskchip { max-width: 92%; }
.typing { display: inline-flex; gap: 4px; padding: 14px; }
.typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; } .typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }
.trig { padding: 12px 0; border-bottom: 1px solid var(--line); display: grid; gap: 4px; }
.trigform { display: grid; gap: 8px; margin-top: 12px; }
.hook { white-space: pre-wrap; word-break: break-all; font: 12px/1.4 var(--mono); background: var(--bg); padding: 8px; border-radius: 8px; margin: 4px 0 0; }

.evrow { padding: 12px 16px; border-bottom: 1px solid var(--line); }
.evrow:last-child { border-bottom: 0; }
.evrow .chips { gap: 5px; }
.pill.discarded { background: var(--panel-2); color: var(--muted); }
button.pill { border: 0; cursor: pointer; }
.seg button:disabled { opacity: .45; }

/* -- the system map: the design note's five modules on one page ----------------------- */
.page.wide { max-width: 1180px; }
.sys-span { flex: 0 0 auto; }
.sys-span button { min-height: 30px; padding: 0 12px; font-size: 13px; }
.sys { position: relative; display: grid; gap: 22px 12px; padding: 4px 0 4px 16px;
       grid-template-columns: minmax(0, 1fr) minmax(0, .75fr);
       grid-template-areas: "src src" "filter noise" "router replies" "workers workers"
                            "machines watchdog" "cloud cloud"; }
.sys > * { position: relative; z-index: 1; min-width: 0; }
.sys > .sys-wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; z-index: 0; }
.sys-wires path { fill: none; stroke: var(--muted); stroke-width: 1.4; }
.sys-wires path.thin { stroke-width: 1; opacity: .55; }
.sys-wires path.dash { stroke-dasharray: 5 4; }
.sys-wires path.thread { stroke: var(--accent); }
.sys-wires path.noise { stroke: var(--bad); opacity: .7; }
.sys-wires marker path { fill: var(--muted); stroke: none; }
.sys-lbl { font: 11px var(--mono); fill: var(--muted); }
.a-src { grid-area: src; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; align-content: start; }
.a-src .sys-cap { grid-column: 1 / -1; }
.a-filter { grid-area: filter; } .a-noise { grid-area: noise; } .a-router { grid-area: router; }
.a-replies { grid-area: replies; } .a-thread { grid-area: thread; } .a-workers { grid-area: workers; }
.a-machines { grid-area: machines; } .a-watchdog { grid-area: watchdog; } .a-cloud { grid-area: cloud; }
.sys-cap { font: 11px var(--mono); color: var(--muted); letter-spacing: .02em; margin-bottom: 2px; }
.sys-box { display: block; width: 100%; text-align: left; background: var(--panel); color: var(--text);
           border: 1.5px solid color-mix(in srgb, var(--text) 55%, transparent); border-radius: 6px; padding: 10px 12px; }
button.sys-box:hover, .sys-src:hover { border-color: var(--accent); }
.sys-title { font: 600 14px var(--mono); }
.sys-title.big { font-size: 18px; }
.sys-title.bad { color: var(--bad); }
.sys-title.accent { color: var(--accent); }
.sys-sub { font-size: 13px; margin-top: 2px; }
.sys-meta { font: 11px var(--mono); color: var(--muted); margin-top: 3px; display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
.sys-stats { font-size: 12.5px; margin-top: 6px; }
.sys-warn { font: 11px var(--mono); color: var(--bad); margin-top: 6px; }
.sys-src { display: flex; align-items: center; gap: 6px; min-height: 36px; padding: 6px 8px; font: 12.5px var(--mono);
           background: var(--panel); border: 1.5px solid color-mix(in srgb, var(--text) 55%, transparent); border-radius: 6px; text-align: left; }
.sys-src.off { opacity: .5; border-style: dashed; }
.sys-n { font-weight: 700; }
.sys-mode { font-size: 10px; padding: 1px 5px; border-radius: 4px; background: var(--panel-2); color: var(--muted); }
.sys-mode.m-admit { background: var(--ok-bg); color: var(--ok); }
.sys-mode.m-ignore { background: var(--bad-bg); color: var(--bad); }
.sys-mode.m-explicit { background: var(--warn-bg); color: var(--warn); }
.a-noise { border-style: dashed; align-self: center; }
.a-thread { font: 11.5px var(--mono); color: var(--accent); padding-left: 4px; }
.a-thread > * { background: var(--bg); }
.a-thread { display: none; }
.sys-thread-m { color: var(--accent); }
.a-workers > .sys-cap { order: 99; }  /* on a phone the wires come in from above */
.a-workers { display: grid; gap: 10px; align-content: start; }
.sys-worker.idle { border-style: dashed; opacity: .75; }
.sys-worker .pill { font-size: 10px; padding: 1px 6px; vertical-align: 1px; }
.sys-machs { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 6px; font-size: 12.5px; }
.sys-mach { display: inline-flex; align-items: center; gap: 6px; }
.a-watchdog.alert { border-color: var(--bad); }
.a-cloud { border: 1.5px solid color-mix(in srgb, var(--text) 55%, transparent); border-radius: 6px; padding: 10px; }
.sys-db { border-style: solid; }
@media (min-width: 820px) {
  .sys { padding: 4px 0; gap: 26px 52px; grid-template-columns: minmax(150px, .8fr) 1fr 1fr 1.15fr;
         grid-template-areas: ". thread thread thread" "src filter router workers" "src noise replies workers"
                              "cloud cloud machines watchdog"; }
  .a-src { grid-template-columns: 1fr; align-self: center; }
  .a-thread { display: block; text-align: center; padding: 0 0 8px; }
  .sys-thread-m { display: none; }
  .a-workers > .sys-cap { order: 0; }
  .a-noise { align-self: start; width: 70%; justify-self: center; }
  .a-filter, .a-router { align-self: end; }
  .a-workers { align-self: center; }
  .sys-title.big { font-size: 20px; }
}

/* -- models and keys ------------------------------------------------------------- */
.mlist { display: grid; gap: 8px; }
.mrow { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.mrow.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.mhead { display: flex; align-items: center; gap: 10px; width: 100%; min-height: 48px; padding: 10px 12px; text-align: left; }
.mbody { padding: 0 12px 12px; border-top: 1px solid var(--line); padding-top: 10px; }
.mgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.mgrid label { display: grid; gap: 4px; color: var(--muted); }
.mgrid select { width: 100%; }
.mono { font-family: var(--mono); }
.modelchip { display: inline-flex; align-items: center; gap: 6px; margin: -6px 0 12px; padding: 7px 12px; font-size: 13px;
             border-radius: 999px; background: var(--panel); border: 1px solid var(--line); color: var(--text); }
.sheet-bg { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 40; }
.sheet { position: fixed; left: 0; right: 0; bottom: 0; z-index: 41; max-width: 680px; margin: 0 auto; background: var(--panel);
         border-radius: 18px 18px 0 0; padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); box-shadow: var(--shadow); }
.sheet-row { border-radius: 10px; margin-top: 6px; }
.sheet-row.on { background: var(--accent-bg); }
.toggle { width: 22px; height: 22px; flex: 0 0 auto; accent-color: var(--accent); }
.btn-row .grow { flex: 1; }