:root{font-family:'IBM Plex Sans','Noto Sans JP','Yu Gothic',Meiryo,'Segoe UI',sans-serif;color:#131416;background:#fff;font-synthesis:none;--canvas:#f9fbfc;--surface:#fff;--raised:#f4f6f8;--text:#131416;--muted:#5d5f60;--border:#e8eaec;--control:#858b8d;--accent:#1b6c80;color-scheme:light dark}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0;overflow:hidden}button,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}[hidden]{display:none!important}button:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.chat{height:100%;display:flex;flex-direction:column;background:var(--surface);color:var(--text);font-size:14px;line-height:1.45}.header{display:flex;align-items:center;gap:10px;padding:14px 16px 10px;flex:none;border-bottom:1px solid var(--border)}.avatar{height:40px;width:40px}.heading{min-width:0;flex:1}.heading h1{font-size:16px;line-height:24px;margin:0;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.identity{font-size:12px;line-height:18px;margin:0;color:var(--muted)}.icon{display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:6px;background:transparent;color:var(--text);font-size:28px;flex:none}.icon:hover{background:var(--raised)}.demo{background:var(--raised);color:var(--muted);font-size:12px;padding:5px 16px;border-bottom:1px solid var(--border);flex:none}.status{margin:12px 16px 0;padding:8px 10px;background:var(--raised);border-radius:6px;font-size:12px;color:var(--muted);flex:none}.status[data-state=waiting_for_human]{color:#92400e;background:#fff7ed}.status[data-state=human_active]{color:var(--accent)}.status[data-state=resolved]{color:#1e7b4f}.transcript{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:18px 16px;scrollbar-width:thin}.empty{text-align:left;padding-top:18px}.empty h2{font-size:20px;line-height:28px;font-weight:600;margin:0 0 8px}.empty>p{font-size:14px;line-height:22px;color:var(--muted);margin:0 0 20px}.suggestions{display:flex;flex-wrap:wrap;gap:8px}.suggestions button{background:var(--surface);color:var(--text);border:1px solid var(--control);border-radius:6px;min-height:44px;padding:8px 12px;font-size:13px}.message{max-width:92%;margin:0 0 18px}.message.visitor{margin-left:auto}.sender{font-size:12px;margin:0 0 5px;color:var(--muted)}.visitor .sender{text-align:right}.body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:16px;line-height:24px;background:var(--raised);padding:11px 12px;border-radius:8px}.visitor .body{background:var(--text);color:var(--surface)}time{font-size:12px;color:var(--muted);display:block;margin-top:5px}.visitor time{text-align:right}.sources{font-size:12px;display:flex;flex-direction:column;gap:4px;margin-top:8px;color:var(--muted)}.handoff-line{padding:4px 16px 10px;display:flex;align-items:center;justify-content:space-between;gap:8px;flex:none}.handoff-line>span{font-size:12px;color:var(--muted);max-width:110px;text-align:right}.handoff{min-height:44px;padding:4px 0;text-align:left;background:transparent;border:0;color:var(--accent);text-decoration:underline;text-underline-offset:4px;font-size:13px}.composer{margin:0 16px;border:1px solid var(--control);border-radius:8px;flex:none;background:var(--surface);overflow:hidden}.composer textarea{resize:none;display:block;width:100%;max-height:130px;min-height:58px;padding:12px;border:0;background:transparent;color:var(--text);font-size:16px;line-height:24px;border-radius:8px}.composer textarea:focus-visible{outline-offset:-3px}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:2px 6px 6px 12px}.composer-bottom>span{font-size:12px;color:var(--muted)}.send{display:flex;align-items:center;gap:10px;min-height:40px;padding:8px 14px;background:var(--text);color:var(--surface);border:0;border-radius:6px;font-size:13px;font-weight:500}.send span{font-size:20px;line-height:20px}.privacy{margin:8px 16px 10px;font-size:12px;color:var(--muted);flex:none}.alert{padding:10px 12px;margin:12px 16px 0;border:1px solid #b4232a;border-radius:6px;color:var(--text);font-size:13px;flex:none}.alert button{display:block;min-height:36px;margin-top:5px;padding:4px 8px;background:var(--surface);border:1px solid var(--control);border-radius:4px;color:var(--text)}.thinking{font-size:12px;color:var(--muted);padding:0 16px 8px;flex:none}.new-messages{align-self:center;min-height:36px;padding:4px 12px;background:var(--surface);border:1px solid var(--control);border-radius:6px;color:var(--text);font-size:12px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.modal .header{padding-top:max(12px,env(safe-area-inset-top))}.modal .privacy{padding-bottom:env(safe-area-inset-bottom)}@media(max-height:480px){.demo,.status,.handoff-line>span,.composer-bottom>span,.privacy{display:none}.header{padding:4px 12px}.avatar{height:32px;width:32px}.header h1{font-size:14px}.handoff-line{padding:0 12px}.handoff{min-height:32px}.composer{margin:0 12px 8px}.composer textarea{min-height:42px;max-height:65px;padding:6px 10px;line-height:22px}.composer-bottom{padding-bottom:4px}.send{min-height:32px}.transcript{padding:12px}.empty{padding-top:0}}@media(prefers-color-scheme:dark){:root{--canvas:#111;--surface:#191919;--raised:#252525;--text:#f5f5f5;--muted:#b4b4b4;--border:#353535;--control:#777;--accent:#83c7d6}.status[data-state=waiting_for_human]{background:#332815;color:#edc67a}.status[data-state=resolved]{color:#7bc99c}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* Keep actions readable when recovery appears above the transcript. */
.alert {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  background: var(--raised);
}
.alert > span { flex: 1 1 180px; overflow-wrap: anywhere; }
.alert > button { min-height: 44px; margin-top: 0; padding-inline: 12px; border-radius: 6px; }
.sender strong { color: var(--text); font-weight: 600; }
.sources { padding-block-start: 8px; border-block-start: 1px solid var(--border); }
.sources ul { list-style: none; margin: 0; padding: 0; }
.source { overflow-wrap: anywhere; }
.source + .source { margin-block-start: 4px; }
.sources strong { font-weight: 600; }
.source strong { color: var(--accent); }
.send { min-height: 44px; margin-inline-start: auto; }
.transcript:focus-visible { outline-offset: -2px; }
.composer textarea::placeholder { color: var(--muted); opacity: 1; }
.new-messages { min-height: 44px; }

:root { --press-ink: #32373b; }
@media (prefers-color-scheme: dark) { :root { --press-ink: #cfd9dd; } }
.send:not(:disabled):active { background: var(--press-ink); }
.close:active, .new-messages:active { background: var(--raised); }
@media (prefers-reduced-motion: no-preference) {
  .send:not(:disabled) { transition: background-color 120ms ease-out, transform 120ms ease-out; }
  .send:not(:disabled):active { transform: translateY(1px); }
}

.chat[data-installation-check] > :is(.status, .transcript, .new-messages, .thinking, .handoff-line, .composer, .privacy, .announcement),
.chat[data-installation-check] .identity {
  display: none;
}
.installation-check {
  flex: 1;
  min-block-size: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 24px 16px;
}
.installation-check h2 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}
.installation-check p {
  margin: 8px 0 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}
.installation-form {
  display: grid;
  justify-items: start;
  gap: 8px;
  margin-block-start: 20px;
}
.installation-form label { font-weight: 600; }
.installation-form input {
  inline-size: 100%;
  min-block-size: 44px;
  padding: 8px 12px;
  border: 1px solid var(--control);
  border-radius: 6px;
  color: var(--text);
  background: var(--surface);
  font: inherit;
  font-size: 16px;
}
.installation-form input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.verify-installation, .return-to-chat {
  min-block-size: 44px;
  border: 0;
  border-radius: 6px;
  font-weight: 500;
}
.verify-installation {
  margin-block-start: 4px;
  padding: 8px 14px;
  color: var(--surface);
  background: var(--text);
}
.verify-installation:hover:not(:disabled) { background: var(--accent); }
.return-to-chat {
  margin-block-start: 8px;
  padding: 8px 0;
  color: var(--accent);
  background: transparent;
  text-decoration: underline;
  text-underline-offset: 4px;
}
#installation-result { margin: 0; }
#installation-result:not(:empty) { margin-block-start: 12px; }
@media (max-height: 480px) {
  .status:not([data-state]) { display: block; margin-top: 8px; }
  .alert { margin: 8px 12px 0; padding: 6px 10px; }
  .alert > button { min-height: 40px; }
  .send { min-height: 36px; }
}


@keyframes mascot-wave {
  0%, 100% { transform: rotate(0); }
  25%, 67% { transform: rotate(-72deg); }
  45% { transform: rotate(-38deg); }
}

@keyframes mascot-blink {
  0%, 43%, 64%, 100% { transform: scaleY(1); }
  53% { transform: scaleY(0.12); }
}

@keyframes mascot-flutter {
  0%, 100% { transform: rotate(0); }
  20%, 63% { transform: rotate(44deg); }
  42% { transform: rotate(-8deg); }
}

@keyframes mascot-antenna {
  0%, 100% { transform: rotate(0); }
  24% { transform: rotate(-18deg); }
  52% { transform: rotate(12deg); }
  74% { transform: rotate(-6deg); }
}

@keyframes mascot-perk {
  0%, 100% { transform: rotate(0); }
  26%, 60% { transform: rotate(13deg); }
  43% { transform: rotate(-7deg); }
}

.mascot-wave-arm {
  transform-box: view-box;
  transform-origin: 95px 44px;
}

.mascot-bird-wing {
  transform-box: view-box;
  transform-origin: 48px 65px;
}

.mascot-robot-antenna {
  transform-box: view-box;
  transform-origin: 60px 34px;
}

.mascot-cat-ear {
  transform-box: view-box;
  transform-origin: 87px 42px;
}

.mascot-eyes {
  transform-box: fill-box;
  transform-origin: center;
}

@keyframes mascot-welcome {
  0%, 100% { transform: none; }
  35% { transform: translateY(-3px) rotate(-8deg); }
  65% { transform: rotate(4deg); }
}

@keyframes mascot-thinking {
  0%, 100% { transform: none; }
  45% { transform: rotate(-9deg); }
  70% { transform: rotate(-6deg); }
}

@keyframes mascot-reply {
  0%, 100% { transform: none; }
  34% { transform: translateY(2px) rotate(8deg) scale(.95); }
  65% { transform: translateY(-1px) rotate(-3deg); }
}

@keyframes mascot-handoff {
  0%, 100% { transform: none; }
  38% { transform: translateX(3px) rotate(9deg); }
  68% { transform: translateX(1px) rotate(3deg); }
}

@keyframes mascot-unread {
  0%, 100% { transform: none; }
  38% { transform: scale(1.2); }
  68% { transform: scale(.96); }
}

@media (prefers-reduced-motion: no-preference) {
  .mascot-wave-arm,
  .mascot-bird-wing,
  .mascot-robot-antenna,
  .mascot-cat-ear { animation: var(--mascot-wave-name, none) 740ms ease-in-out; }
  .mascot-eyes { animation: var(--mascot-blink-name, none) 740ms ease-in-out; }
  [data-mascot-gesture] { transform-origin: center 68%; }
  [data-mascot-gesture="welcome"] { animation: mascot-welcome 480ms ease-in-out; }
  [data-mascot-gesture="thinking"] { animation: mascot-thinking 640ms ease-in-out 2; }
  [data-mascot-gesture="reply"] { animation: mascot-reply 380ms ease-in-out; }
  [data-mascot-gesture="handoff"] { animation: mascot-handoff 460ms ease-in-out; }
  [data-mascot-gesture="unread"] { animation: mascot-unread 430ms ease-in-out; }
}