:root{
  --bg:#f4f4f1;--paper:#fff;--text:#202020;--muted:#747474;--line:#deded9;
  --dark:#101113;--dark2:#1a1b1f;--dark3:#26272d;--light:#f7f7f8;
  --accent:#8ab4f8;--danger:#ff7a7a;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
body{background:var(--bg);color:var(--text)}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
[hidden]{display:none!important}

.neutral{min-height:100vh;padding:env(safe-area-inset-top) 18px env(safe-area-inset-bottom);max-width:760px;margin:auto}
.neutral-head{padding:28px 4px 18px;border-bottom:1px solid var(--line)}
.neutral-head h1{font-size:22px;margin:0;font-weight:650;user-select:none}
.neutral-head p{font-size:13px;color:var(--muted);margin:6px 0 0}
.neutral-section{padding:18px 4px}
.neutral-row{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.neutral-row span:last-child{color:var(--muted)}
.neutral-foot{font-size:12px;color:#9a9a96;padding:24px 4px;text-align:center;user-select:none}

.overlay{display:none;position:fixed;inset:0;z-index:60;background:#f4f4f1;align-items:center;justify-content:center;padding:20px}
.overlay.show{display:flex}
.card{width:min(410px,100%);background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}
.card h2{margin:0 0 6px}
.card p{color:var(--muted);font-size:13px;line-height:1.4}
.card input,.card select,.card textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px;margin:5px 0 9px;background:#fff}
.card textarea{min-height:90px;resize:vertical}
.card button{width:100%;border:0;border-radius:12px;padding:12px;margin-top:8px}
.primary{background:var(--accent)!important;color:#111827!important;font-weight:700}
.secondary{background:#ececeb!important;color:#202020!important}
.error{font-size:12px;color:#a23333;min-height:16px;margin-top:6px}
.setup-result{background:#f1f1ef;border-radius:12px;padding:12px;margin-top:12px}
.setup-result textarea{min-height:110px;font-size:12px}

.secure{display:none;min-height:100vh;background:var(--dark);color:var(--light);flex-direction:column}
.secure.show{display:flex}
.secure-head{position:sticky;top:0;z-index:5;background:rgba(16,17,19,.97);backdrop-filter:blur(14px);padding:calc(10px + env(safe-area-inset-top)) 12px 10px;border-bottom:1px solid #303137;display:flex;justify-content:space-between;align-items:center}
.secure-head small{display:block;color:#a9aab0;margin-top:2px}
.head-actions{display:flex;gap:8px}
.secure-head button,.toolbar button,.composer button,.sheet button,.camera button,.decoy button{border:0;border-radius:12px;padding:10px 12px;background:var(--dark3);color:#fff}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;padding:10px 12px;border-bottom:1px solid #303137;background:var(--dark2)}
.toolbar select{background:var(--dark3);color:#fff;border:1px solid #3a3b42;border-radius:10px;padding:9px}
.panic{background:#4d1d23!important;color:#ffd9dd!important}
.status{font-size:12px;color:#a9aab0;padding:8px 12px;border-bottom:1px solid #303137}
.messages{flex:1;padding:14px;display:flex;flex-direction:column;gap:10px;min-height:340px}
.empty{margin:auto;color:#8e9096}
.msg{max-width:84%;padding:10px 12px;border-radius:16px;background:#24252a}
.msg.mine{align-self:flex-end;background:#1d3956}
.msg.theirs{align-self:flex-start}
.msg .meta{font-size:11px;color:#a9aab0;margin-top:5px;text-align:right}
.msg img,.msg video{display:block;max-width:100%;max-height:360px;border-radius:12px;background:#000;margin-top:8px}
.msg .actions{display:none;gap:6px;margin-top:8px}
.msg.open .actions{display:flex}
.msg .actions button{border:0;border-radius:9px;padding:7px 9px;background:#34363d;color:#fff}
.selected-media{padding:8px 12px;color:#a9aab0;font-size:12px;background:var(--dark2);border-top:1px solid #303137}
.composer{position:sticky;bottom:0;padding:10px 10px calc(10px + env(safe-area-inset-bottom));display:grid;grid-template-columns:1fr auto;gap:8px;background:rgba(16,17,19,.98);border-top:1px solid #303137}
.composer textarea{resize:none;min-height:46px;max-height:140px;border-radius:14px;padding:12px;border:1px solid #34353b;background:var(--dark2);color:#fff}
.compose-actions{display:flex;gap:8px;align-items:end}
.attach{width:46px;height:46px;font-size:24px;padding:0!important}
.send{background:var(--accent)!important;color:#111827!important;font-weight:700}

.decoy{display:none;min-height:100vh;padding:28px 18px}
.decoy.show{display:block}
.decoy-card{max-width:760px;margin:auto}
.decoy-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:10px}
.decoy button{color:#202020;background:#fff;border:1px solid var(--line)}

.sheet{display:none;position:fixed;inset:0;z-index:75;background:rgba(0,0,0,.65);align-items:flex-end;justify-content:center}
.sheet.show{display:flex}
.sheet-card{width:min(760px,100%);background:#1a1b1f;color:#fff;border-radius:18px 18px 0 0;padding:16px 16px calc(16px + env(safe-area-inset-bottom))}
.sheet-title{display:flex;justify-content:space-between;align-items:center;gap:12px}
.sheet-title h3{margin:0}
.menu-action{width:100%;margin-top:8px;text-align:left;padding:13px!important}
.setting-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-top:1px solid #35363c}
.setting-row select{background:#26272d;color:#fff;border:1px solid #414249;border-radius:10px;padding:9px}
.small{font-size:11px;color:#9fa0a6;line-height:1.45}

.camera{display:none;position:fixed;inset:0;z-index:80;background:#000;color:#fff;flex-direction:column}
.camera.show{display:flex}
.camera-head{padding:calc(10px + env(safe-area-inset-top)) 12px 10px;display:flex;justify-content:space-between;align-items:center;background:#0b0b0c}
.camera-stage{flex:1;display:flex;align-items:center;justify-content:center;overflow:hidden}
.camera-stage video{width:100%;height:100%;object-fit:contain}
.camera-controls{padding:12px 12px calc(12px + env(safe-area-inset-bottom));display:flex;gap:10px;justify-content:center;flex-wrap:wrap;background:#0b0b0c}
.record{background:#8b1e28!important}

@media(max-width:560px){.msg{max-width:90%}}