/* 远端操作台与登入页（深色，与仪表板一致）。所有文字 ≥ 22px（16pt）。不得出现水平捲轴。 */
:root {
  --bg0: #050a14; --panel: #0d182c; --line: #1d3053; --line2: #28426e;
  --text: #e6edf7; --sub: #9fb3d1; --dim: #6f84a6; --accent: #38bdf8; --accent2: #2dd4bf;
  --good: #22c55e; --warn: #facc15; --bad: #ef4444;
  --font: "Microsoft JhengHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  --fs: 22px;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg0); color: var(--text); font-family: var(--font); font-size: var(--fs); }
body { background: radial-gradient(1200px 600px at 50% -10%, #12284d 0%, rgba(18,40,77,0) 60%), linear-gradient(180deg, #071021 0%, #050a14 100%); overflow-x: hidden; }
button, input, textarea, select, option { font-family: var(--font); font-size: var(--fs); color: var(--text); }
.language-control { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; }
.language-control select { min-height: 48px; padding: 6px 12px; border: 1px solid var(--line2); border-radius: 8px; background: var(--panel); }
html[lang="en"] .btn, html[lang="en"] .chip, html[lang="en"] .r-hd h1 { white-space: normal; overflow-wrap: anywhere; }
small, em { font-size: inherit; font-style: normal; }
[hidden] { display: none !important; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; padding: 6px 20px; border-radius: 8px; border: 1px solid var(--line2);
  background: linear-gradient(180deg, rgba(25,45,80,0.95), rgba(14,26,48,0.95)); cursor: pointer; white-space: nowrap; }
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: linear-gradient(180deg, #0ea5e9, #0369a1); border-color: #38bdf8; font-weight: 700; }
.btn.danger { border-color: rgba(239,68,68,.6); }
.btn.on { border-color: var(--accent); color: var(--accent); }
.btn.rec { background: linear-gradient(180deg, #ef4444, #b91c1c); border-color: #fca5a5; font-weight: 700; }

/* ---------- 登入页 ---------- */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px 16px; }
.login-card { width: 100%; max-width: 560px; padding: 32px 28px; border-radius: 12px; border: 1px solid var(--line); background: linear-gradient(180deg, rgba(17,31,56,0.96), rgba(10,19,36,0.96)); }
.login-card h1 { margin: 0 0 6px; font-size: 34px; letter-spacing: 2px; }
.login-card .lead { margin: 0 0 22px; color: var(--sub); }
.login-card label { display: block; margin-bottom: 8px; color: var(--sub); }
.login-card input { width: 100%; min-height: 56px; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line2); background: #081122; outline: none; }
.login-card input:focus { border-color: var(--accent); }
.login-card .btn { width: 100%; margin-top: 18px; }
.msg { margin-top: 14px; min-height: 1.5em; line-height: 1.5; }
.msg.err { color: #fca5a5; } .msg.ok { color: #86efac; } .msg.warn { color: var(--warn); }

/* ---------- 操作台 ---------- */
.remote { min-height: 100vh; display: flex; flex-direction: column; }
.r-hd { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px; padding: 12px 20px; border-bottom: 2px solid rgba(56,189,248,0.5); }
.r-hd h1 { margin: 0; font-size: 30px; letter-spacing: 2px; white-space: nowrap; }
.r-hd .factory { color: var(--sub); min-width: 0; overflow-wrap: anywhere; }
.r-hd .r-clock { display: inline-flex; align-items: center; gap: 12px; white-space: nowrap; color: var(--sub); font-variant-numeric: tabular-nums; }
.r-hd .r-clock .time { color: var(--text); font-weight: 700; }
.r-hd .r-clock .chip.shift { color: var(--sub); }
.r-hd .stat { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-left: auto; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 2px 12px; border-radius: 6px; border: 1px solid var(--line2); white-space: nowrap; }
.chip i { width: 12px; height: 12px; border-radius: 50%; background: var(--dim); }
.chip.ok i { background: var(--good); box-shadow: 0 0 8px var(--good); } .chip.bad i { background: var(--bad); } .chip.warn i { background: var(--warn); }
.chip b { color: var(--accent); }

.r-main { flex: 1 1 auto; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 420px); gap: 16px; padding: 16px 20px 20px; min-height: 0; }
.r-chat { display: flex; flex-direction: column; min-width: 0; min-height: 0; border: 1px solid var(--line); border-radius: 10px; background: rgba(10,19,36,0.9); }
.r-side { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.box { border: 1px solid var(--line); border-radius: 10px; background: rgba(13,24,44,0.9); padding: 14px 16px; min-width: 0; }
.box h2 { margin: 0 0 10px; font-size: 24px; padding-left: 12px; border-left: 5px solid var(--accent); }
.big-btn { width: 100%; min-height: 84px; font-size: 28px; font-weight: 700; margin-bottom: 10px; }
.hint { color: var(--sub); line-height: 1.5; overflow-wrap: anywhere; }
.row-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.row-btns .btn { flex: 1 1 160px; }

.conv { flex: 1 1 auto; min-height: 260px; overflow-y: auto; overflow-x: hidden; padding: 14px 16px; display: flex; flex-direction: column; gap: 12px; }
.conv-empty { color: var(--dim); text-align: center; margin: auto; }
.m { max-width: 88%; padding: 10px 14px; border-radius: 10px; line-height: 1.5; overflow-wrap: anywhere; word-break: break-word; }
.m .who { display: flex; flex-wrap: wrap; gap: 4px 12px; color: var(--sub); margin-bottom: 4px; }
.m .who b { color: var(--text); }
.m .txt { white-space: pre-wrap; }
.m.user { align-self: flex-end; background: rgba(14,165,233,0.16); border: 1px solid rgba(56,189,248,0.45); }
.m.ai { align-self: flex-start; background: rgba(45,212,191,0.08); border: 1px solid rgba(45,212,191,0.4); }
.m.system { align-self: center; background: rgba(120,150,200,0.08); border: 1px dashed var(--line2); color: var(--sub); }
.m.err { border-color: rgba(239,68,68,0.7); background: rgba(239,68,68,0.1); }
.m .acts { margin: 6px 0 0; padding: 0; list-style: none; color: var(--accent2); }
.m .acts li::before { content: "▸ "; }

.composer { border-top: 1px solid var(--line); padding: 12px 14px; display: flex; flex-direction: column; gap: 8px; }
.interim { color: var(--warn); min-height: 1.5em; overflow-wrap: anywhere; }
.src { color: var(--sub); }
.src b { color: var(--accent2); }
.compose-row { display: flex; gap: 10px; align-items: stretch; }
.compose-row textarea { flex: 1 1 auto; min-width: 0; min-height: 64px; max-height: 180px; resize: vertical; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line2); background: #081122; outline: none; line-height: 1.45; }
.compose-row textarea:focus { border-color: var(--accent); }
.compose-btns { display: flex; flex-direction: column; gap: 8px; }
.status { min-height: 1.5em; line-height: 1.5; overflow-wrap: anywhere; }
.status.busy { color: var(--accent); } .status.err { color: #fca5a5; } .status.ok { color: #86efac; }
.voice-note { color: var(--warn); overflow-wrap: anywhere; }

/* 窄画面（手机、直立平板）：单栏、整页可上下捲动，不可左右捲动 */
@media (max-width: 900px) {
  .r-main { grid-template-columns: minmax(0, 1fr); padding: 12px; }
  .r-side { order: -1; }
  .conv { min-height: 320px; max-height: 60vh; }
  .r-hd { padding: 10px 12px; }
  .r-hd .stat { margin-left: 0; }
}
@media (max-width: 520px) {
  .compose-row { flex-direction: column; }
  .compose-btns { flex-direction: row; }
  .compose-btns .btn { flex: 1 1 0; padding: 6px 10px; }
  .m { max-width: 100%; }
}
@media (min-width: 901px) {
  .remote { height: 100vh; }
  .r-main { overflow: hidden; grid-template-rows: minmax(0, 1fr); }
  .r-side { overflow-y: auto; overflow-x: hidden; min-height: 0; }
  .conv { min-height: 120px; }
}