:root {
  --bg: #f6f7f9; --panel: #fff; --ink: #1c2128; --muted: #5d6b7a; --line: #dfe4ea;
  --accent: #1f5f8b; --accent-ink: #fff; --warn-bg: #fff4d6; --warn-ink: #7a5200;
  --bad-bg: #fde8e8; --bad-ink: #8a2323; --ok-ink: #1f6f52; --chip: #eef2f6;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--ink); font: 15px/1.55 -apple-system, "Segoe UI", system-ui, sans-serif;
  display: flex; flex-direction: column; }
button { font: inherit; cursor: pointer; }
button:disabled { opacity: .45; cursor: default; }
.quiet { background: none; border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; color: var(--muted); }
.primary { background: var(--accent); color: var(--accent-ink); border: none; border-radius: 10px; padding: 6px 14px; }

.topbar { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; margin-right: auto; }
.pill { font-size: 12px; padding: 2px 9px; border-radius: 999px; background: var(--chip); color: var(--muted); }
.pill.warn { background: var(--warn-bg); color: var(--warn-ink); }
nav { display: flex; gap: 8px; }

#chat { flex: 1; overflow-y: auto; padding: 18px 0 8px; }
.empty { max-width: 720px; margin: 12vh auto 0; text-align: center; color: var(--muted); padding: 0 16px; }
.fine { font-size: 13px; }
#messages { max-width: 760px; margin: 0 auto; padding: 0 16px; display: flex; flex-direction: column; gap: 16px; }
.msg.user { align-self: flex-end; max-width: 92%; }
.msg.assistant { align-self: stretch; }
.bubble { background: var(--chip); border-radius: 16px 16px 4px 16px; padding: 10px 14px; white-space: pre-wrap; word-break: break-word; }
.gateline { font-size: 12px; color: var(--ok-ink); text-align: right; margin-top: 4px; }
.reply { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
.reply p { margin: 0 0 .7em; } .reply p:last-child { margin: 0; }
.reply ol, .reply ul { margin: .3em 0 .7em; padding-left: 1.4em; }
.reply h3 { font-size: 14px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin: .4em 0; }
.cursor { display: inline-block; width: 7px; height: 1em; background: var(--accent); vertical-align: text-bottom; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.note { font-size: 13px; margin-top: 6px; padding: 6px 10px; border-radius: 8px; }
.note.warn { background: var(--warn-bg); color: var(--warn-ink); }
.note.error { background: var(--bad-bg); color: var(--bad-ink); }
.chip { display: inline-block; font-size: 12px; margin: 6px 6px 0 0; padding: 3px 9px; border-radius: 999px; background: var(--chip); color: var(--muted); }
.chip.off { text-decoration: line-through; }

#composer-wrap { padding: 8px 16px 14px; background: var(--bg); }
#composer { max-width: 760px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 8px 10px; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.composer-row { display: flex; align-items: flex-end; gap: 8px; }
#input { flex: 1; resize: none; border: none; outline: none; font: inherit; line-height: 1.45; padding: 8px 4px; background: transparent; max-height: 260px; }
#mic { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line); background: var(--panel); color: var(--muted); display: grid; place-items: center; }
#mic-stop { color: #b3261e; font-size: 14px; }
.rec-time { font-variant-numeric: tabular-nums; color: #b3261e; font-size: 13px; }
#send { width: 36px; height: 34px; border-radius: 10px; padding: 0; font-size: 18px; }
#flags { margin-top: 6px; display: flex; flex-direction: column; gap: 4px; }
.flag { font-size: 13px; padding: 6px 10px; border-radius: 8px; }
.flag.block { background: var(--bad-bg); color: var(--bad-ink); cursor: pointer; }
.flag.warn { background: var(--warn-bg); color: var(--warn-ink); }
.flag button { margin-left: 8px; font-size: 12px; border: 1px solid currentColor; background: transparent; color: inherit; border-radius: 6px; padding: 1px 8px; }
.caption { margin: 6px 4px 0; font-size: 13px; color: var(--muted); }

.drawer { position: fixed; top: 0; right: 0; height: 100%; width: min(520px, 100%); background: var(--panel); border-left: 1px solid var(--line);
  padding: 14px 18px; overflow-y: auto; box-shadow: -4px 0 18px rgba(0,0,0,.08); z-index: 10; }
.drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
#lessons { width: 100%; font: 13px/1.5 ui-monospace, Consolas, monospace; border: 1px solid var(--line); border-radius: 8px; padding: 8px; }
.addrow { display: flex; gap: 10px; align-items: center; margin-top: 8px; }
.hint { font-size: 13px; color: var(--muted); }
.copybar { display: flex; align-items: center; gap: 10px; margin-top: 6px; flex-wrap: wrap; }
.copybar .copy { font-size: 12px; border: 1px solid var(--line); background: var(--panel); color: inherit; border-radius: 8px; padding: 3px 10px; }
.copybar .copy:not(:disabled):hover { border-color: var(--accent); }
.copywhy { font-size: 12px; color: var(--muted); }
.usage { font-size: 11px; color: var(--muted); text-align: right; margin-top: 4px; }
.switch { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); margin: 6px 4px 0; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pair .reply { min-width: 0; }
.who { font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
@media (max-width: 720px) { .pair { grid-template-columns: 1fr; } }
.login-body { display: grid; place-items: center; padding: 24px; }
.login-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 24px 28px; width: min(420px, 100%); box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.login-card h1 { font-size: 20px; margin: 0 0 14px; }
.login-card label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
.login-card input { width: 100%; font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; }
.login-card button { margin-top: 14px; width: 100%; background: var(--accent); color: var(--accent-ink); border: none; border-radius: 10px; padding: 9px; }
.login-card .error { color: var(--bad-ink); font-size: 13px; margin-top: 8px; }
.login-card .notice, .login-card .hint { font-size: 13px; color: var(--muted); }