:root{--bg:#f4f6f8;--card:#fff;--line:#e3e7eb;--ink:#1d2a35;--muted:#6b7a86;--pri:#0f766e;--pri2:#e6f4f2;--warn:#b45309;--in:#fff;--out:#dcf4ee;--note:#fff7db}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:15px/1.45 "Sarabun","Noto Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--pri)}
.muted{color:var(--muted)}.small{font-size:13px}
.top{display:flex;align-items:center;gap:18px;height:52px;padding:0 16px;background:#123c3a;color:#fff}
.top a{color:#d6ece9;text-decoration:none}.brand{font-size:17px;color:#fff!important}
.top nav{display:flex;gap:4px}.top nav a{padding:6px 12px;border-radius:8px}.top nav a.on{background:#ffffff22;color:#fff}
.who{margin-left:auto;display:flex;align-items:center;gap:12px}.who form{margin:0}
button.link{background:none;border:0;color:#d6ece9;cursor:pointer;font:inherit;padding:0}
.pill{font-size:12px;padding:2px 8px;border-radius:99px}.pill.warn{background:#fbbf24;color:#3b2500}
.flash{background:#fff7db;border-bottom:1px solid #f1d67a;padding:8px 16px}
.btn{display:inline-block;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;padding:8px 14px;font:inherit;cursor:pointer;text-decoration:none}
.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}.btn.ghost{background:#fff}
.btn.small{padding:4px 10px;font-size:13px}.btn.full{width:100%}.btn:disabled{opacity:.6}
input,select,textarea{font:inherit;border:1px solid var(--line);border-radius:8px;padding:7px 10px;background:#fff;color:var(--ink);max-width:100%}
textarea{width:100%;resize:vertical}
label{display:block}.stack label{margin-bottom:10px}.stack input{width:100%;margin-top:4px}
.tag{display:inline-block;font-size:12px;padding:1px 7px;border-radius:6px;background:var(--pri2);color:var(--pri)}
.tag.gray{background:#eef0f2;color:var(--muted)}.tag.lang{background:#e8eefc;color:#3046a8}.tag.who{background:#f3e8fd;color:#6b2fa8}.tag.ok{background:#dcfce7;color:#166534}
.badge{background:#dc2626;color:#fff;border-radius:99px;font-size:12px;padding:0 7px;margin-left:auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:16px}
.card.warn{background:#fff7db}
.page{max-width:1100px;margin:20px auto;padding:0 16px}.page.narrow{max-width:460px}
.center{display:flex;align-items:center;justify-content:center;min-height:100%}
.login{width:340px}.login h1{margin:0 0 4px;font-size:22px}.login label{margin:12px 0}.login input{width:100%;margin-top:4px}.login .btn{width:100%;margin-top:8px}
.empty{padding:24px;text-align:center;color:var(--muted)}
.tabs{display:flex;flex-wrap:wrap;gap:4px;padding:8px}.tabs a{padding:5px 10px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:14px}
.tabs a.on{background:var(--pri);color:#fff}.tabs a i{font-style:normal;font-size:12px;opacity:.8}.tabs.inline{padding:0}
/* inbox */
.inbox-page{height:100%;overflow:hidden;display:flex;flex-direction:column}
.inbox{flex:1;display:grid;grid-template-columns:320px 1fr 300px;min-height:0}
.list{background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0}
.search{padding:0 8px 8px}.search input{width:100%}
#convlist{overflow-y:auto;flex:1}
.conv{display:block;padding:10px 12px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink)}
.conv:hover{background:#f7f9fa}.conv.active{background:var(--pri2)}
.conv .row1{display:flex;justify-content:space-between;gap:8px}.conv .time{font-size:12px;color:var(--muted);white-space:nowrap}
.conv .row2{display:flex;gap:4px;align-items:center;margin:3px 0;flex-wrap:wrap}
.conv .preview{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv.unread .preview{color:var(--ink);font-weight:600}
.chat{display:flex;flex-direction:column;min-height:0;background:#eef2f1}
.chat.placeholder{align-items:center;justify-content:center}
.chat-head{display:flex;align-items:center;gap:10px;padding:8px 14px;background:#fff;border-bottom:1px solid var(--line)}
.chat-head .title{display:flex;flex-direction:column}.chat-head .title .muted{font-size:12px}
.chat-head .back{display:none;font-size:28px;text-decoration:none;line-height:1}
.show-ctx{margin-left:auto;display:none}
.msgs{flex:1;overflow-y:auto;padding:14px 16px;display:flex;flex-direction:column;gap:6px}
.msg{max-width:72%;padding:7px 11px;border-radius:12px;box-shadow:0 1px 1px #0000000f;word-wrap:break-word}
.msg .body{white-space:pre-wrap}
.msg .trn{white-space:pre-wrap;font-size:13.5px;color:#41545f;border-top:1px dashed #0000001a;margin-top:4px;padding-top:3px}
.msg .trn:empty{display:none}
.msg .pending{color:var(--muted);font-style:italic}
.msg .meta{font-size:11.5px;color:var(--muted);text-align:right;margin-top:2px}
.msg.in{background:var(--in);align-self:flex-start;border-top-left-radius:3px}
.msg.out{background:var(--out);align-self:flex-end;border-top-right-radius:3px}
.msg.note{background:var(--note);align-self:center;max-width:85%;font-size:14px;border:1px dashed #e7c95c}
.msg.note.system{background:transparent;border:0;box-shadow:none;color:var(--muted);font-size:13px;padding:2px}
.msg.note.system .meta{text-align:center}
.st-read{color:#2563eb}.st-failed{color:#dc2626;font-weight:600}.st-dry{color:var(--warn)}
.msg .err{font-size:12px;color:#dc2626}
.composer{background:#fff;border-top:1px solid var(--line);padding:8px 12px}
.composer.noting textarea{background:var(--note)}
.win{font-size:12px;color:var(--pri);margin-bottom:4px}.win.closed{color:var(--warn)}
.tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:6px}.tools .grow{flex:1}
.chk{display:flex;align-items:center;gap:4px;font-size:13px;white-space:nowrap}
#sendmsg{font-size:13px;color:#b91c1c}
.ctx{background:#fff;border-left:1px solid var(--line);overflow-y:auto;padding:12px}
.ctx .box{border-bottom:1px solid var(--line);padding:6px 0 14px;margin-bottom:8px}
.ctx h3{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:4px 0 8px}
.ctx .big{font-size:20px;font-weight:700}.ctx .phase{color:var(--pri);font-weight:600;margin:2px 0 8px}
.ctx dl{display:grid;grid-template-columns:auto 1fr;gap:3px 10px;margin:0 0 8px;font-size:14px}.ctx dt{color:var(--muted)}.ctx dd{margin:0}
.ctx select{width:100%;margin-top:4px}.ctx form.inline{margin:8px 0}.ctx label{font-size:13px;color:var(--muted)}
.wrap{word-break:break-all}.tour{font-size:14px;margin-bottom:8px}
.close-ctx{display:none;float:right}
/* tables */
.head-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:12px}.head-row h2{margin:0}
.table{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.table .tr{display:grid;grid-template-columns:1fr 1.4fr 1.4fr 1fr .5fr 1.3fr;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);align-items:center}
#users .table .tr{grid-template-columns:1.2fr 1fr .7fr 1fr 2.6fr}
.table .th{background:#f7f9fa;font-size:13px;color:var(--muted);font-weight:600}.table .tr.off{opacity:.55}
.row-actions{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin:0}
.small-input{width:110px}
.row-form{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.row-form .grow{flex:1;min-width:220px}
.qr-form{display:grid;grid-template-columns:1fr 80px;gap:6px;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.qr-form textarea,.qr-form div{grid-column:1/-1}
dl.grid{display:grid;grid-template-columns:160px 1fr;gap:8px 12px}dl.grid dt{color:var(--muted)}dl.grid dd{margin:0}
code{background:#f1f4f6;padding:2px 6px;border-radius:5px;word-break:break-all}
/* responsive */
@media (max-width:1100px){.inbox{grid-template-columns:300px 1fr}.ctx{display:none}.show-ctx{display:inline-block}
  .ctx-open .ctx{display:block;position:fixed;top:52px;right:0;bottom:0;width:min(340px,92vw);z-index:20;box-shadow:-6px 0 20px #0002}
  .ctx-open .close-ctx{display:inline-block}}
@media (max-width:720px){
  .top{gap:10px;padding:0 10px}.top nav a{padding:6px 8px}.brand b{display:none}.who a{display:none}
  .inbox{grid-template-columns:1fr}.has-conv .list{display:none}.inbox-page:not(.has-conv) .chat{display:none}
  .chat-head .back{display:block}.msg{max-width:88%}
  .table .tr,#users .table .tr{grid-template-columns:1fr 1fr}.table .th{display:none}
  dl.grid{grid-template-columns:1fr}}