:root{
  --bg:#0f172a; --panel:#ffffff; --ink:#1e293b; --muted:#64748b;
  --brand:#1d4ed8; --brand-ink:#ffffff; --line:#e2e8f0; --ok:#065f46;
  --okbg:#d1fae5; --errbg:#fee2e2; --err:#991b1b; --in:#f1f5f9; --out:#dbeafe;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:#f1f5f9;color:var(--ink);line-height:1.45}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{display:flex;align-items:center;gap:1rem;background:var(--bg);color:#fff;
  padding:.6rem 1rem;flex-wrap:wrap}
.topbar .brand{color:#fff;font-weight:700;font-size:1.05rem}
.topbar nav{display:flex;align-items:center;gap:1rem;margin-left:auto;flex-wrap:wrap}
.topbar nav a{color:#cbd5e1}
.topbar nav a:hover{color:#fff}
.topbar .who{color:#94a3b8;font-size:.85rem}
.menu-toggle{display:none;margin-left:auto;background:none;border:0;color:#fff;font-size:1.4rem;cursor:pointer}
.linkbtn{background:none;border:0;color:#cbd5e1;cursor:pointer;font:inherit;padding:0}
.linkbtn:hover{color:#fff}
.inline{display:inline}

.container{max-width:960px;margin:1.2rem auto;padding:0 1rem}
.pagehead{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1rem}
.pagehead h1{margin:0;font-size:1.4rem}
h2{font-size:1.1rem}
.muted{color:var(--muted)}
code{background:#eef2ff;padding:.1rem .3rem;border-radius:4px}

.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:1rem;margin-bottom:1rem;box-shadow:0 1px 2px rgba(0,0,0,.04)}
.login-card{max-width:360px;margin:3rem auto}

.flash{padding:.6rem .8rem;border-radius:8px;margin-bottom:1rem;font-size:.95rem}
.flash.ok{background:var(--okbg);color:var(--ok)}
.flash.err{background:var(--errbg);color:var(--err)}

label{display:block;margin:.6rem 0;font-size:.9rem;color:#334155}
input[type=text],input[type=password],input[type=email],select,textarea{
  width:100%;padding:.5rem .6rem;border:1px solid #cbd5e1;border-radius:8px;
  font:inherit;margin-top:.2rem;background:#fff;color:var(--ink)}
textarea{resize:vertical}

.btn{display:inline-block;padding:.5rem .9rem;border:1px solid #cbd5e1;border-radius:8px;
  background:#fff;color:var(--ink);cursor:pointer;font:inherit}
.btn:hover{background:#f8fafc;text-decoration:none}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.primary:hover{filter:brightness(1.07)}
.btn.small{padding:.3rem .55rem;font-size:.82rem}
.btn.danger{color:#b91c1c;border-color:#fecaca}
.btn.danger:hover{background:#fef2f2}

.badge{display:inline-block;min-width:1.2rem;text-align:center;background:#ef4444;color:#fff;
  border-radius:999px;font-size:.72rem;padding:0 .35rem;line-height:1.3rem}

.conv-list{list-style:none;margin:0;padding:0}
.conv-list li{border-bottom:1px solid var(--line)}
.conv-list li a{display:block;padding:.7rem .3rem;color:var(--ink)}
.conv-list li a:hover{background:#f8fafc;text-decoration:none}
.conv-list li.unread .peer{font-weight:700}
.conv-top{display:flex;align-items:center;gap:.6rem}
.conv-top .peer{font-size:1.02rem}
.conv-top .time{margin-left:auto;color:var(--muted);font-size:.78rem}
.conv-sub{display:flex;gap:.6rem;color:var(--muted);font-size:.85rem}
.conv-sub .preview{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.thread{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}
.bubble{max-width:80%;padding:.5rem .7rem;border-radius:12px}
.bubble .bubble-meta{font-size:.72rem;color:var(--muted);margin-top:.25rem}
.bubble.in{align-self:flex-start;background:var(--in);border-bottom-left-radius:3px}
.bubble.out{align-self:flex-end;background:var(--out);border-bottom-right-radius:3px}
.bubble-body{white-space:pre-wrap;word-break:break-word}

.composer{background:#fff;border:1px solid var(--line);border-radius:10px;padding:.7rem}
.composer-row{display:flex;gap:.5rem;align-items:flex-end;margin-bottom:.4rem}
.composer-row textarea{flex:1}

.grid-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.6rem;align-items:end}
.grid-form button{grid-column:1/-1;justify-self:start}

.tbl{width:100%;border-collapse:collapse;font-size:.9rem}
.tbl th,.tbl td{text-align:left;padding:.45rem .5rem;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{color:var(--muted);font-weight:600}
.active-row{background:#eff6ff}
.inline-form{display:flex;gap:.35rem;align-items:center;flex-wrap:wrap;margin:0}
.inline-form input[type=text]{width:auto;min-width:90px}
.inline-form .status-in{max-width:90px}
.chk{display:flex;align-items:center;gap:.2rem;margin:0;font-size:.82rem}
.chk input{width:auto;margin:0}
.actions{display:flex;gap:.3rem;flex-wrap:wrap}
.body-cell{min-width:220px}

@media(max-width:720px){
  .menu-toggle{display:block}
  .topbar nav{display:none;width:100%;flex-direction:column;align-items:flex-start;gap:.5rem;margin-top:.5rem}
  body.nav-open .topbar nav{display:flex}
  .bubble{max-width:92%}
  .tbl{display:block;overflow-x:auto;white-space:nowrap}
}