:root{--bg:#f6f7f9;--panel:#fff;--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--brand:#128c7e;--brand-ink:#fff;--in:#fff;--out:#dcf8c6;--warn:#b45309;--err:#b91c1c;--ai:#7c3aed;--radius:10px;--draft-bg:#ede9fe;--draft-ink:#1f1147}
/* theme: follows the device unless the user picks one (html[data-theme]) */
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b0f14;--panel:#111827;--ink:#e5e7eb;--muted:#9ca3af;--line:#1f2937;--in:#1f2937;--out:#064e3b;--brand:#25d366;--brand-ink:#04110a;--draft-bg:#2e1065;--draft-ink:#ede9fe;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0b0f14;--panel:#111827;--ink:#e5e7eb;--muted:#9ca3af;--line:#1f2937;--in:#1f2937;--out:#064e3b;--brand:#25d366;--brand-ink:#04110a;--draft-bg:#2e1065;--draft-ink:#ede9fe;color-scheme:dark}
:root[data-theme="light"]{color-scheme:light}
*{box-sizing:border-box}html,body{margin:0;height:100%}
body{font:15px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--brand)}
.top{display:flex;align-items:center;gap:6px;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--line);overflow-x:auto;white-space:nowrap}
.top .logo{font-weight:700;margin-right:8px}
.top a.nav{padding:6px 10px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:14px}
.top a.nav.on,.top a.nav:hover{background:var(--bg)}
.top form{margin-left:auto}
.badge{display:inline-block;padding:1px 7px;border-radius:999px;font-size:12px;background:var(--line);color:var(--ink)}
.badge.live{background:#16a34a;color:#fff}.badge.test{background:#f59e0b;color:#111}
.badge.ai{background:var(--ai);color:#fff}.badge.hot{background:#dc2626;color:#fff}.badge.warm{background:#f59e0b;color:#111}.badge.cold{background:#60a5fa;color:#111}
.wrap{max-width:1100px;margin:0 auto;padding:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px}
h1{font-size:22px;margin:4px 0 14px}h2{font-size:17px;margin:0 0 10px}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
.table-scroll{overflow-x:auto}
input,select,textarea,button{font:inherit;color:inherit}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=datetime-local],input[type=time],input[type=search],select,textarea{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
textarea{min-height:80px}
label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
label.inline{display:inline-flex;gap:6px;align-items:center;color:var(--ink);margin:6px 12px 6px 0}
.btn{display:inline-block;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:var(--panel);cursor:pointer;text-decoration:none;color:var(--ink)}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.danger{color:var(--err)}.btn.small{padding:4px 9px;font-size:13px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}.row>*{flex:1 1 160px}
.muted{color:var(--muted)}.err{color:var(--err)}.ok{color:#16a34a}
.msgs{list-style:none;padding:0;margin:0 0 12px}.msgs li{padding:8px 12px;border-radius:8px;margin-bottom:6px;background:var(--panel);border:1px solid var(--line)}
.msgs li.error{border-color:var(--err);color:var(--err)}.msgs li.success{border-color:#16a34a}
.auth{max-width:380px;margin:8vh auto;padding:0 16px}
pre{white-space:pre-wrap;background:var(--bg);padding:10px;border-radius:8px;font-size:13px}
.inline-form{display:inline}

/* inbox layout */
.inbox{display:grid;grid-template-columns:340px 1fr 300px;height:calc(100vh - 51px)}
.list{border-right:1px solid var(--line);background:var(--panel);display:flex;flex-direction:column;min-height:0}
.list .filters{padding:8px;border-bottom:1px solid var(--line)}
.list .tabs{display:flex;gap:4px;margin-top:6px;overflow-x:auto}
.list .tabs button{border:0;background:var(--bg);padding:5px 10px;border-radius:999px;font-size:13px;cursor:pointer}
.list .tabs button.on{background:var(--brand);color:var(--brand-ink)}
.convs{overflow-y:auto;flex:1}
.conv{padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer;display:block;color:inherit;text-decoration:none}
.conv.on{background:var(--bg)}
.conv .l1{display:flex;justify-content:space-between;gap:8px}.conv .name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv .prev{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.unread{background:var(--brand);color:var(--brand-ink);border-radius:999px;padding:0 7px;font-size:12px}
.thread{display:flex;flex-direction:column;min-height:0;background:var(--bg)}
.thead{padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.thead .who{font-weight:600;flex:1;min-width:120px}
.thead select{width:auto;padding:4px 6px;font-size:13px}
.bubbles{flex:1;overflow-y:auto;padding:12px}
.b{max-width:75%;width:fit-content;padding:7px 10px;border-radius:10px;margin:4px 0;box-shadow:0 1px 1px rgba(0,0,0,.05);word-wrap:break-word}
.b .txt{white-space:pre-wrap}
.b.in{background:var(--in);margin-right:auto}.b.out{background:var(--out);margin-left:auto}
.b .meta{font-size:11px;color:var(--muted);margin-top:3px;text-align:right}
.b img{max-width:100%;border-radius:6px;display:block}
.b .tpl{font-size:11px;color:var(--muted)}
.tick.read{color:#2563eb}
.day{text-align:center;font-size:12px;color:var(--muted);margin:10px 0}
.composer{background:var(--panel);border-top:1px solid var(--line);padding:8px}
.composer textarea{min-height:44px;max-height:160px;resize:vertical}
.composer .bar{display:flex;gap:6px;margin-top:6px;align-items:center;flex-wrap:wrap}
.window{font-size:12px;color:var(--muted)}.window.closed{color:var(--warn)}
.draft{background:var(--draft-bg);color:var(--draft-ink);border-radius:8px;padding:8px;margin-bottom:8px}
.side{border-left:1px solid var(--line);background:var(--panel);overflow-y:auto;padding:12px}
.side h3{font-size:14px;margin:14px 0 6px}
.empty{display:flex;align-items:center;justify-content:center;color:var(--muted);height:100%}
.back{display:none}
.tplpreview{background:var(--out);border-radius:8px;padding:8px;white-space:pre-wrap;font-size:14px;margin-top:8px}
@media (max-width:1100px){.inbox{grid-template-columns:300px 1fr}.side{display:none}.side.show{display:block;position:fixed;inset:51px 0 0 auto;width:min(340px,100%);z-index:5;box-shadow:-4px 0 12px rgba(0,0,0,.15)}}
@media (max-width:720px){.inbox{grid-template-columns:1fr}.inbox.open .list{display:none}.inbox:not(.open) .thread{display:none}.back{display:inline-block}.b{max-width:88%}.wrap{padding:10px}}
.phone{max-width:340px;background:#e5ddd5;border-radius:16px;padding:14px}
.phone .bubble{background:#fff;color:#111;border-radius:8px;padding:8px 10px;white-space:pre-wrap}
.phone .btns div{background:#fff;color:#0284c7;text-align:center;border-radius:8px;margin-top:4px;padding:6px}
.theme-btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:8px;padding:4px 9px;cursor:pointer;font-size:15px;line-height:1.4}
.top .theme-btn{margin-right:6px;flex:0 0 auto}
.theme-float{position:fixed;top:12px;right:12px;z-index:10}