:root {
  --bg: #f6f7f9; --panel: #ffffff; --text: #111827; --muted: #6b7280; --line: #d9dde3;
  --accent: #0369a1; --accent-text: #fff; --user: #dbeafe; --danger: #b91c1c; --ok: #15803d; --warn: #b45309;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a; --panel: #1e293b; --text: #e5e7eb; --muted: #94a3b8; --line: #334155;
    --accent: #38bdf8; --accent-text: #0f172a; --user: #1e3a5f; --danger: #f87171; --ok: #4ade80; --warn: #fbbf24;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Noto Sans KR", sans-serif;
  overscroll-behavior: none; -webkit-tap-highlight-color: transparent;
}
[hidden] { display: none !important; }
#app { height: 100%; max-width: 720px; margin: 0 auto; position: relative; }
button, input { font: inherit; color: inherit; }
button {
  min-height: 48px; padding: 0 16px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--panel); touch-action: manipulation;
}
button.primary { background: var(--accent); color: var(--accent-text); border-color: transparent; font-weight: 600; }
button.danger { color: var(--danger); border-color: var(--danger); }
button:disabled { opacity: .5; }
input[type=text], input[type=url] {
  width: 100%; min-height: 48px; padding: 0 12px; border-radius: 12px;
  border: 1px solid var(--line); background: var(--panel);
}
label { display: block; margin: 12px 0; color: var(--muted); font-size: 14px; }
label input[type=text], label input[type=url] { margin-top: 4px; color: var(--text); font-size: 16px; }
label.row { display: flex; gap: 10px; align-items: center; color: var(--text); }
label.row input { width: 24px; height: 24px; }

#pair-screen {
  padding: calc(24px + env(safe-area-inset-top)) calc(20px + env(safe-area-inset-right)) 24px calc(20px + env(safe-area-inset-left));
}
#pair-screen h1 { margin: 0 0 8px; }
.hint { color: var(--muted); }
.error { color: var(--danger); min-height: 1.5em; }

#chat-screen {
  height: 100%; display: flex; flex-direction: column;
  padding-left: env(safe-area-inset-left); padding-right: env(safe-area-inset-right);
}
#topbar {
  display: flex; align-items: center; gap: 8px; padding: calc(8px + env(safe-area-inset-top)) 12px 8px;
  border-bottom: 1px solid var(--line); background: var(--panel);
}
#topbar button { min-height: 40px; padding: 0 12px; font-size: 14px; }
#topbar button[aria-pressed=true] { background: var(--warn); color: #fff; border-color: transparent; }
.spacer { flex: 1; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.on { background: var(--ok); } .dot.off { background: var(--danger); } .dot.mid { background: var(--warn); }
#conn-text { font-size: 14px; color: var(--muted); }
.banner { margin: 8px 12px 0; padding: 10px 12px; border-radius: 12px; background: var(--warn); color: #000; font-size: 14px; }

#messages { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 10px; overflow-anchor: none; }
.msg { max-width: 92%; padding: 10px 14px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.user { align-self: flex-end; background: var(--user); border-color: transparent; }
.msg.user .tag { display: block; font-size: 12px; color: var(--muted); }
.msg.notice { align-self: center; font-size: 14px; color: var(--muted); background: transparent; border-style: dashed; }
.msg.error { align-self: center; color: var(--danger); border-color: var(--danger); font-size: 14px; }
.msg .foot { display: block; margin-top: 6px; font-size: 12px; color: var(--muted); }

#status-line { min-height: 28px; padding: 2px 14px; font-size: 14px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#approvals { padding: 0 12px; display: flex; flex-direction: column; gap: 8px; max-height: 45vh; overflow-y: auto; }
.approval { border: 2px solid var(--warn); border-radius: 16px; padding: 12px; background: var(--panel); }
.approval h3 { margin: 0 0 4px; font-size: 17px; }
.approval .meta { font-size: 14px; color: var(--muted); }
.approval pre { margin: 8px 0; padding: 8px; max-height: 160px; overflow: auto; background: var(--bg); border-radius: 8px; font-size: 13px; white-space: pre-wrap; overflow-wrap: anywhere; }
.approval .btns { display: flex; gap: 10px; }
.approval .btns button { flex: 1; min-height: 52px; font-weight: 700; }
.approval .btns .yes { background: var(--ok); color: #000; border-color: transparent; }
.approval .btns .no { color: var(--danger); border-color: var(--danger); }
.approval.done { opacity: .6; border-color: var(--line); }

#composer { padding: 8px 12px calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--panel); }
#text-form { display: flex; gap: 8px; }
#talk-row { display: flex; gap: 8px; margin-top: 8px; }
#stop-btn { flex: 0 0 72px; min-height: 72px; }
#talk-btn {
  flex: 1; min-height: 72px; font-size: 20px; font-weight: 700; border-radius: 36px;
  background: var(--accent); color: var(--accent-text); border-color: transparent;
  user-select: none; -webkit-user-select: none; touch-action: none; -webkit-touch-callout: none;
}
#talk-btn.active { background: var(--danger); color: #fff; }

#settings-sheet { position: absolute; inset: 0; background: rgba(0,0,0,.5); display: flex; align-items: flex-end; z-index: 10; }
.sheet-body { width: 100%; background: var(--panel); border-radius: 20px 20px 0 0; padding: 16px 20px calc(20px + env(safe-area-inset-bottom)); max-height: 90%; overflow-y: auto; }
.sheet-body h2 { margin: 0 0 4px; }
.sheet-body a { display: block; margin: 12px 0; color: var(--accent); }
.sheet-actions { display: flex; gap: 10px; justify-content: space-between; margin-top: 16px; }