:root{--bg:#0b1020;--panel:#151b30;--panel2:#1d2542;--text:#eef1fb;--muted:#9aa3c2;--accent:#3b82f6;--ok:#22c55e;--bad:#ef4444;--warn:#f59e0b;--line:#2a3354}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:16px/1.4 system-ui,-apple-system,Roboto,sans-serif}
#app{height:100dvh;display:flex;flex-direction:column;max-width:720px;margin:0 auto;position:relative}
[hidden]{display:none!important}
.view{display:flex;flex-direction:column;flex:1;min-height:0}
h1{font-size:1.25rem;margin:0;flex:1}
.muted{color:var(--muted)}
.bar{display:flex;align-items:center;gap:8px;padding:calc(env(safe-area-inset-top) + 10px) 12px 10px;background:var(--panel);border-bottom:1px solid var(--line)}
.icon-btn{background:none;border:0;color:var(--text);font-size:1.4rem;min-width:44px;min-height:44px;border-radius:12px}
.icon-btn:active{background:var(--panel2)}
.dot{width:10px;height:10px;border-radius:50%;background:var(--bad)}
.dot.on{background:var(--ok)}.dot.poll{background:var(--warn)}
.btn{border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:12px;padding:10px 16px;font-size:1rem;min-height:44px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.btn.ghost{background:none}.btn.small{min-height:36px;padding:4px 12px;font-size:.9rem}
.btn.big{min-height:52px;font-size:1.1rem}
.btn.danger{background:var(--bad);border-color:var(--bad);color:#fff}
.error{color:#fca5a5;min-height:1.4em;margin:.2em 0}
.banner{background:#1e3a8a;padding:10px 12px;border-radius:10px}
.warn{background:#78350f;color:#fde68a;padding:8px 10px;border-radius:10px;margin:0 0 8px;font-size:.9rem}

/* auth */
.auth-card{margin:auto;width:min(100%,420px);padding:24px 20px;display:flex;flex-direction:column;gap:12px}
.auth-card form{display:flex;flex-direction:column;gap:10px}
label{display:flex;flex-direction:column;gap:4px;font-size:.9rem;color:var(--muted)}
input,select,textarea{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit;width:100%}
input[type=checkbox]{width:auto}input[type=range]{padding:0}
.tabs{display:flex;gap:6px}.tab{flex:1;padding:10px;border-radius:10px;border:1px solid var(--line);background:none;color:var(--muted);font-size:1rem}
.tab.active{background:var(--panel2);color:var(--text);border-color:var(--accent)}

/* list */
.conv-list{list-style:none;margin:0;padding:0;overflow:auto;flex:1}
.conv-list li{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);min-height:72px}
.conv-list li:active{background:var(--panel)}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--accent);display:grid;place-items:center;font-weight:700;font-size:1.2rem;flex:none}
.avatar.bot{background:#a855f7}.avatar.group{background:#0d9488}
.conv-main{flex:1;min-width:0}.conv-name{font-weight:600}.conv-last{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{background:var(--accent);color:#fff;border-radius:999px;min-width:24px;padding:2px 8px;text-align:center;font-size:.85rem;font-weight:700}
.fab{position:absolute;right:18px;bottom:calc(env(safe-area-inset-bottom) + 18px);width:60px;height:60px;border-radius:50%;border:0;background:var(--accent);color:#fff;font-size:2rem;box-shadow:0 4px 14px #0008}

/* mode switch */
.mode-switch{display:flex;margin:10px 12px 0;background:var(--panel);border:2px solid var(--line);border-radius:16px;padding:4px;gap:4px}
.mode-opt{flex:1;min-height:52px;border:0;border-radius:12px;background:none;color:var(--muted);font-size:1.05rem;font-weight:600}
.mode-opt.active{background:var(--accent);color:#fff}
#mode-hf.active{background:#16a34a}

/* chat */
#chat-body{flex:1;min-height:0;display:flex;flex-direction:column}
.log{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px}
.msg{max-width:84%;padding:9px 13px;border-radius:18px;background:var(--panel2);align-self:flex-start;word-wrap:break-word;overflow-wrap:anywhere;white-space:pre-wrap}
.msg.me{align-self:flex-end;background:var(--accent)}
.msg.pending{opacity:.55}.msg.failed{background:#7f1d1d}
.msg.speaking{outline:3px solid var(--ok)}
.msg .who{font-size:.75rem;color:#c4b5fd;font-weight:600}
.msg .meta{font-size:.7rem;opacity:.7;margin-top:2px;text-align:right}
.msg:not(.me){cursor:pointer}
.composer{padding:8px 12px calc(env(safe-area-inset-bottom) + 10px);background:var(--panel);border-top:1px solid var(--line)}
.composer textarea{resize:none;max-height:140px}
.composer-row{display:flex;gap:10px;align-items:center;margin-top:8px;justify-content:space-between}
.auto{flex-direction:row;align-items:center;gap:6px}
.mic{width:84px;height:84px;border-radius:50%;border:0;background:var(--accent);color:#fff;font-size:2.4rem;flex:none;touch-action:manipulation;user-select:none;-webkit-user-select:none}
.mic.listening{background:var(--bad);animation:pulse 1.2s infinite}
.send{flex:1;height:64px;font-size:1.3rem}
@keyframes pulse{0%{box-shadow:0 0 0 0 #ef444499}100%{box-shadow:0 0 0 24px #ef444400}}
body.hf-on #composer{display:none}
body.hf-on .log{flex:0 0 auto;max-height:22%}

/* hands-free */
.hf{flex:1;display:flex;flex-direction:column;gap:12px;padding:12px;background:#000;overflow:auto}
.hf-state{display:flex;align-items:center;justify-content:center;gap:14px;font-size:2.2rem;font-weight:800;padding:22px 10px;border-radius:20px;border:4px solid #fff;text-transform:uppercase;letter-spacing:.03em}
.hf-state.idle{background:#1f2937;color:#fff}
.hf-state.speaking{background:#1d4ed8;color:#fff;animation:glow 1.4s infinite alternate}
.hf-state.listening{background:#15803d;color:#fff;animation:glow 1s infinite alternate}
.hf-state.sending{background:#a16207;color:#fff}
@keyframes glow{from{filter:brightness(1)}to{filter:brightness(1.35)}}
.hf-last{font-size:1.7rem;font-weight:700;color:#fff;line-height:1.3;flex:1;overflow:auto}
.hf-last small{display:block;font-size:1rem;color:#93c5fd;font-weight:600}
.hf-live{min-height:2.6em;font-size:1.5rem;color:#86efac;font-weight:600}
.hf-buttons{display:grid;grid-template-columns:1fr 1fr 1.4fr;gap:10px}
.hf-btn{min-height:96px;font-size:1.5rem;font-weight:800;border-radius:20px;border:4px solid #fff;background:#111827;color:#fff}
.hf-btn.danger{background:#b91c1c}.hf-btn.go{background:#15803d}
.hf-help,.hf-note{margin:0;color:#d1d5db;font-size:.9rem}.hf-note{color:#fcd34d}

/* sheet */
.sheet-back{position:absolute;inset:0;background:#000a;z-index:10}
.sheet{position:absolute;left:0;right:0;bottom:0;max-height:88%;overflow:auto;background:var(--panel);border-radius:22px 22px 0 0;padding:16px 16px calc(env(safe-area-inset-bottom) + 20px);z-index:11;display:flex;flex-direction:column;gap:12px}
.sheet h2{margin:0;font-size:1.15rem}.sheet h3{margin:8px 0 0;font-size:1rem}
.sheet .row{display:flex;gap:10px;align-items:center}.sheet .row>*{flex:1}
.sheet .section{border-top:1px solid var(--line);padding-top:12px;display:flex;flex-direction:column;gap:10px}
.sheet code,.sheet .mono{background:#0006;padding:8px;border-radius:8px;word-break:break-all;font-family:ui-monospace,monospace;font-size:.85rem;display:block}
.toast{position:absolute;left:50%;transform:translateX(-50%);bottom:110px;background:#fff;color:#111;padding:10px 16px;border-radius:999px;z-index:20;max-width:90%;box-shadow:0 4px 14px #0008}