:root{--bg:#f1f5f4;--card:#fff;--text:#0f172a;--muted:#64748b;--brand:#0f766e;--brand2:#14b8a6;--mine:#ccfbf1;--line:#e2e8f0;--danger:#dc2626}
@media (prefers-color-scheme:dark){:root{--bg:#0b1414;--card:#132020;--text:#e2e8f0;--muted:#94a3b8;--mine:#134e4a;--line:#1f3333}}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:Vazirmatn,"Segoe UI",Tahoma,sans-serif;font-size:15px}
.hidden{display:none!important}
.screen{height:100%;display:flex;flex-direction:column}
#setup{align-items:center;justify-content:center;padding:16px}
.card{background:var(--card);border-radius:18px;padding:24px;box-shadow:0 8px 30px #0001}
.setup-card{width:100%;max-width:420px;display:flex;flex-direction:column;gap:12px;text-align:center}
.logo{font-size:44px}
h1{margin:0;color:var(--brand)}
.muted{color:var(--muted);margin:0}
label{display:flex;flex-direction:column;gap:6px;text-align:right;font-weight:600}
input,textarea{font:inherit;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--text);width:100%}
button{font:inherit;cursor:pointer;border:0;border-radius:12px}
.primary{background:var(--brand);color:#fff;padding:14px;font-weight:700}
.link-btn{background:none;color:var(--brand);padding:0;text-align:right}
.hint{font-size:12px;color:var(--muted);line-height:1.8}
header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top));background:var(--brand);color:#fff}
.title{font-weight:800;font-size:18px;display:flex;align-items:center;gap:8px}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.dot.on{background:#4ade80;box-shadow:0 0 8px #4ade80}.dot.off{background:#f87171}
.icon-btn{background:none;font-size:22px;padding:6px;color:inherit}
.devices{display:flex;gap:8px;overflow-x:auto;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--card)}
.chip{flex:none;padding:8px 12px;border-radius:999px;background:var(--bg);border:1px solid var(--line);font-size:13px;color:var(--text)}
.chip.ctrl{border-color:var(--brand2)}
.chip.stale{opacity:.45}
.feed{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.empty{margin:auto;text-align:center;color:var(--muted);line-height:2}
.item{max-width:85%;background:var(--card);border-radius:16px;padding:10px 12px;box-shadow:0 1px 2px #0001;word-wrap:break-word;white-space:pre-wrap}
.item.mine{align-self:flex-start;background:var(--mine)}
.item:not(.mine){align-self:flex-end}
.meta{font-size:11px;color:var(--muted);margin-bottom:4px;display:flex;gap:6px}
.item .acts{display:flex;gap:6px;margin-top:8px}
.item .acts button,.item .acts a{background:var(--bg);color:var(--brand);padding:6px 10px;font-size:13px;text-decoration:none;border-radius:8px}
.item img{max-width:100%;border-radius:10px;margin-top:6px}
.sys{align-self:center;font-size:12px;color:var(--muted);background:none;box-shadow:none}
footer{background:var(--card);border-top:1px solid var(--line);padding:8px;padding-bottom:max(8px,env(safe-area-inset-bottom))}
.composer{display:flex;align-items:flex-end;gap:4px}
.composer textarea{resize:none;max-height:120px}
.send{background:var(--brand);color:#fff;width:46px;height:46px;font-size:18px;flex:none;transform:scaleX(-1)}
.progress{height:4px;background:var(--line);border-radius:4px;margin-bottom:6px;overflow:hidden}
.progress div{height:100%;background:var(--brand2);width:0}
.sheet{position:fixed;inset:0;background:#0007;display:flex;align-items:flex-end;justify-content:center;z-index:10}
.sheet-body{background:var(--card);width:100%;max-width:520px;border-radius:20px 20px 0 0;padding:20px;display:flex;flex-direction:column;gap:12px;padding-bottom:max(20px,env(safe-area-inset-bottom))}
.sheet h3{margin:0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.grid button{background:var(--bg);color:var(--text);padding:14px 4px;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:13px;border:1px solid var(--line)}
.grid button span{font-size:24px}
.grid button.warn{border-color:var(--danger)}
.row{display:flex;gap:8px}
.small{background:var(--brand);color:#fff;padding:0 14px;flex:none}
.ghost{background:var(--bg);color:var(--text);padding:12px}
.danger{background:none;color:var(--danger);padding:12px;border:1px solid var(--danger)}
code{background:var(--bg);padding:12px;border-radius:10px;word-break:break-all;user-select:all}
.toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);background:#0f172aee;color:#fff;padding:10px 16px;border-radius:12px;z-index:20;max-width:90%;text-align:center}
.banner{margin:8px 12px 0;padding:10px 12px;border-radius:12px;background:#fef3c7;color:#78350f;font-size:13px;line-height:1.7}
@media (prefers-color-scheme:dark){.banner{background:#422006;color:#fde68a}}