:root{
  --bg:#0b0f17; --card:#131a27; --card2:#1a2334; --line:#243048;
  --text:#e8edf5; --muted:#8a96ab; --accent:#4f8cff; --accent2:#22d3a6; --danger:#ef4f5f;
  --r:16px;
  --safe-b:env(safe-area-inset-bottom,0px); --safe-t:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);
  font-family:"Segoe UI",Tahoma,"Noto Sans Arabic","Noto Sans",system-ui,sans-serif;font-size:16px;line-height:1.5}
button{font:inherit;color:inherit;cursor:pointer}
input{font:inherit}
.hidden{display:none!important}
.muted{color:var(--muted)}
code{background:var(--card2);padding:1px 6px;border-radius:6px;direction:ltr;unicode-bidi:embed}

/* ---------- home ---------- */
#home{max-width:560px;margin:0 auto;padding:calc(24px + var(--safe-t)) 16px calc(32px + var(--safe-b));min-height:100%}
.brand{display:flex;align-items:center;gap:14px;margin:8px 0 26px}
.brand .logo{width:54px;height:54px;border-radius:15px}
.brand h1{margin:0;font-size:26px;letter-spacing:.3px}
.brand p{margin:0;color:var(--muted);font-size:14px}

.devices{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.dev{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r);padding:14px;transition:transform .12s,border-color .12s}
.dev:active{transform:scale(.98);border-color:var(--accent)}
.dev-ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--card2);flex:none}
.dev-ic svg{width:24px;height:24px}
.dev-tx{flex:1;min-width:0}
.dev-tx b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dev-tx small{color:var(--muted);display:block;direction:ltr;text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dev.quick{border-style:dashed;border-color:var(--accent2)}
.dev-edit{background:none;border:0;font-size:22px;color:var(--muted);padding:6px 10px}
.empty{text-align:center;color:var(--muted);padding:34px 10px;border:1px dashed var(--line);border-radius:var(--r)}

.btn{border:1px solid var(--line);background:var(--card2);border-radius:12px;padding:11px 16px;font-weight:600}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.danger{background:transparent;border-color:var(--danger);color:var(--danger)}
.btn.block{display:block;width:100%}
.howto{margin-top:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px 16px;color:var(--muted);font-size:14px}
.howto summary{cursor:pointer;color:var(--text);font-weight:600}
.howto li{margin:6px 0}

/* ---------- modals ---------- */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:flex-end;justify-content:center;z-index:50;padding:12px}
.sheet{width:100%;max-width:520px;background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;
  margin-bottom:var(--safe-b);max-height:92vh;overflow:auto}
.sheet.small{max-width:400px}
.sheet h2{margin:0 0 14px;font-size:20px}
.sheet label{display:block;margin:12px 0;font-size:14px;color:var(--muted)}
.sheet label small{font-size:12px}
.sheet input:not([type=checkbox]){display:block;width:100%;margin-top:6px;padding:12px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg);color:var(--text);outline:none}
.sheet input:focus{border-color:var(--accent)}
.sheet .check{display:flex;gap:8px;align-items:center;color:var(--text)}
.row{display:flex;gap:8px;margin-top:18px;flex-wrap:wrap}
.row .btn{flex:1}

.seg{display:flex;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px;margin:8px 0}
.seg button{flex:1;border:0;background:none;border-radius:9px;padding:9px 6px;color:var(--muted);font-size:14px;font-weight:600}
.seg button.on{background:var(--accent);color:#fff}

/* ---------- viewer ---------- */
#viewer{position:fixed;inset:0;background:#000;overflow:hidden}
#cv{position:absolute;inset:0;width:100%;height:100%;touch-action:none;display:block}
.pill{position:absolute;top:calc(6px + var(--safe-t));left:50%;transform:translateX(-50%);background:rgba(10,14,22,.62);
  border-radius:20px;padding:3px 12px;font-size:12px;color:#cfd8e6;pointer-events:auto;white-space:nowrap;
  backdrop-filter:blur(6px);direction:ltr;transition:opacity .3s;z-index:5}
.pill.dim{opacity:.35}
.fab{position:absolute;right:14px;bottom:calc(14px + var(--safe-b));width:50px;height:50px;border-radius:50%;
  border:1px solid rgba(255,255,255,.15);background:rgba(20,28,42,.72);font-size:22px;backdrop-filter:blur(8px);z-index:6;
  box-shadow:0 4px 18px rgba(0,0,0,.4)}
.viewer-kbd .fab{bottom:calc(64px + var(--safe-b))}

.keysbar{position:absolute;left:0;right:0;bottom:0;padding:6px 6px calc(6px + var(--safe-b));display:flex;gap:5px;overflow-x:auto;
  background:rgba(10,14,22,.88);backdrop-filter:blur(8px);z-index:7;scrollbar-width:none}
.keysbar::-webkit-scrollbar{display:none}
.keysbar button{flex:none;min-width:44px;height:40px;border-radius:9px;border:1px solid var(--line);background:var(--card2);
  font-size:14px;font-weight:600;padding:0 10px}
.keysbar button.on{background:var(--accent);border-color:var(--accent)}
.keysbar .sep{flex:none;width:1px;background:var(--line);margin:4px 2px}

.menu{position:absolute;inset:0;background:rgba(0,0,0,.45);z-index:20;display:flex;align-items:flex-end;justify-content:center}
.menu-card{width:100%;max-width:560px;max-height:88vh;overflow:auto;background:var(--card);border:1px solid var(--line);
  border-radius:20px 20px 0 0;padding:16px 16px calc(18px + var(--safe-b))}
.menu-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.menu-head .x{background:var(--card2);border:0;width:34px;height:34px;border-radius:50%}
.menu h3{margin:14px 0 2px;font-size:13px;color:var(--muted);font-weight:600}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:8px 0 16px}
.grid button{background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:10px 4px;font-size:20px;
  display:flex;flex-direction:column;align-items:center;gap:4px}
.grid button span{font-size:11px;color:var(--muted)}
.grid button:active{border-color:var(--accent)}
@media (min-width:700px){.grid{grid-template-columns:repeat(6,1fr)}}

.overlay{position:absolute;inset:0;background:rgba(5,8,14,.86);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:16px;z-index:30;text-align:center;padding:24px}
.spinner{width:44px;height:44px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--accent);animation:sp 1s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

.guide{position:absolute;inset:0;background:rgba(0,0,0,.7);z-index:40;display:flex;align-items:center;justify-content:center;padding:16px}
.guide-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;max-width:420px;width:100%;max-height:90vh;overflow:auto}
.guide-card h2{margin:0 0 10px;font-size:19px}
.guide-card ul,#gestHelp{padding-inline-start:18px;margin:0 0 16px;font-size:14px;color:var(--muted)}
.guide-card li,#gestHelp li{margin:7px 0}
.guide-card li b,#gestHelp li b{color:var(--text)}

#kbd{position:absolute;left:0;bottom:0;width:1px;height:1px;opacity:0;border:0;padding:0;font-size:16px;resize:none;z-index:-1}

.toast{position:fixed;left:50%;bottom:calc(90px + var(--safe-b));transform:translate(-50%,20px);background:#1e2738;color:#fff;
  border:1px solid var(--line);padding:10px 16px;border-radius:12px;font-size:14px;opacity:0;pointer-events:none;
  transition:.25s;z-index:100;max-width:90vw;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}