:root{
  --bg:#0f1420; --panel:#171d2b; --panel2:#1e2536; --line:#2a3346;
  --text:#e6ebf5; --muted:#93a0b8; --accent:#2563eb; --accent2:#3b82f6;
  --ok:#22c55e; --warn:#f59e0b; --bad:#ef4444; --info:#38bdf8; --pend:#a78bfa;
  --radius:10px;
}
@media (prefers-color-scheme: light){
  /* Surfaces AND the semantic colours: the dark-tuned accents above wash out
     on light panels (amber measured 1.9:1) — these are their light twins,
     every one >= 4.5:1 on --panel, --panel2 and on the badge tints. */
  :root{ --bg:#f4f6fb; --panel:#ffffff; --panel2:#f0f3fa; --line:#dde3ee;
    --text:#101828; --muted:#5b6577;
    --accent2:#1d4ed8; --ok:#166534; --warn:#92400e; --bad:#b91c1c;
    --info:#0369a1; --pend:#6d28d9; }
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}

.topbar{display:flex;align-items:center;gap:24px;padding:12px 22px;
  background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.brand{font-weight:700;font-size:16px;white-space:nowrap}
.brand span{color:var(--muted);font-weight:500}
.mainnav{display:flex;gap:6px;flex-wrap:wrap;flex:1}
.mainnav a{padding:6px 12px;border-radius:8px;color:var(--muted);font-weight:500}
.mainnav a:hover{background:var(--panel2);color:var(--text);text-decoration:none}
.userbox{display:flex;align-items:center;gap:12px}
.who{color:var(--muted);font-size:13px}

.wrap{max-width:1180px;margin:0 auto;padding:24px 22px 60px}
.foot{text-align:center;color:var(--muted);padding:20px;font-size:12px}

h1{font-size:22px;margin:0 0 4px}
h2{font-size:16px;margin:0 0 12px}
.sub{color:var(--muted);margin:0 0 20px}

.grid{display:grid;gap:16px}
.cards{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 18px}
.card .n{font-size:28px;font-weight:700}
.card .l{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.04em}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;margin-bottom:20px}

table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600;text-transform:uppercase;font-size:11px;letter-spacing:.04em}
tr:hover td{background:var(--panel2)}
.mono{font-family:"Cascadia Code",Consolas,monospace;font-size:12px}

.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11px;
  font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.s-active{background:rgba(34,197,94,.15);color:var(--ok)}
.s-expired{background:rgba(239,68,68,.15);color:var(--bad)}
.s-suspended{background:rgba(245,158,11,.15);color:var(--warn)}
.s-revoked{background:rgba(239,68,68,.22);color:var(--bad)}
.s-cancelled{background:rgba(147,160,184,.18);color:var(--muted)}
.s-pending{background:rgba(167,139,250,.18);color:var(--pend)}
.s-success{background:rgba(34,197,94,.15);color:var(--ok)}
.s-fail{background:rgba(239,68,68,.15);color:var(--bad)}
.s-denied{background:rgba(245,158,11,.15);color:var(--warn)}

.btn{display:inline-block;padding:8px 14px;border-radius:8px;border:1px solid transparent;
  background:var(--accent);color:#fff;font-weight:600;cursor:pointer;font-size:13px}
.btn:hover{background:var(--accent2);text-decoration:none}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn.ghost:hover{background:var(--panel2)}
.btn.danger{background:var(--bad)}
.btn.warn{background:var(--warn);color:#3a2600}
/* light --warn is a dark amber, so the dark-on-dark label must flip to white */
@media (prefers-color-scheme: light){ .btn.warn{color:#fff} }
.btn.sm{padding:5px 10px;font-size:12px}

label{display:block;font-size:12px;color:var(--muted);margin:10px 0 4px;font-weight:600}
input,select,textarea{width:100%;padding:9px 11px;background:var(--panel2);
  border:1px solid var(--line);border-radius:8px;color:var(--text);font-size:13px;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
.formactions{margin-top:16px;display:flex;gap:10px}

.flex{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.between{justify-content:space-between}
.muted{color:var(--muted)}
.right{text-align:right}
details{margin-bottom:16px}
summary{cursor:pointer;font-weight:600;padding:8px 0}

.codebox{font-family:"Cascadia Code",Consolas,monospace;font-size:22px;letter-spacing:2px;
  background:var(--panel2);border:1px dashed var(--accent);border-radius:10px;
  padding:18px;text-align:center;margin:16px 0}
.warnbox{background:rgba(245,158,11,.12);border:1px solid var(--warn);border-radius:8px;
  padding:12px 14px;color:var(--text)}
.searchbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.searchbar input,.searchbar select{max-width:280px}

/* ── Messages (owner ↔ customer) — two-pane inbox app ─────────────────────── */
.msgapp{display:grid;grid-template-columns:300px 1fr;
  height:calc(100vh - 210px);min-height:460px;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:0 1px 3px rgba(16,24,40,.06)}
@media (max-width:900px){.msgapp{grid-template-columns:1fr;height:auto;min-height:0}}

/* left rail — customer list */
.msgside{display:flex;flex-direction:column;min-height:0;border-inline-end:1px solid var(--line)}
.msgside-h{padding:15px 16px;border-bottom:1px solid var(--line);font-weight:700;font-size:12px;
  text-transform:uppercase;letter-spacing:.05em;color:var(--muted);
  display:flex;justify-content:space-between;align-items:center;background:var(--panel)}
.msgside-h .num{background:var(--panel2);border-radius:99px;padding:1px 9px;font-size:11px;color:var(--muted)}
.custlist{overflow-y:auto;flex:1;min-height:0}
.custrow{display:flex;align-items:center;gap:11px;padding:12px 15px;color:var(--text);
  border-bottom:1px solid var(--line);border-inline-start:3px solid transparent}
.custrow:hover{background:var(--panel2);text-decoration:none}
.custrow.sel{background:var(--panel2);border-inline-start-color:var(--accent)}
.avatar{width:38px;height:38px;border-radius:50%;flex:none;display:grid;place-items:center;
  font-weight:700;font-size:15px;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent2))}
.custrow .cmeta{display:flex;flex-direction:column;line-height:1.35;min-width:0;flex:1}
.custrow .cname{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.custrow .cco{color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.custrow .cnt{flex:none;background:var(--bad);color:#fff;border-radius:999px;font-size:11px;font-weight:700;
  min-width:20px;height:20px;padding:0 6px;display:grid;place-items:center}

/* right pane — conversation */
.msgmain{display:flex;flex-direction:column;min-width:0;min-height:0}
.msgmain-h{padding:13px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;
  background:var(--panel)}
.msgmain-h .cname{font-weight:700;font-size:15px}
.msgmain-h .cco{color:var(--muted);font-size:12px}
.msgthread{flex:1;min-height:0;overflow-y:auto;padding:20px 22px;background:var(--bg);
  display:flex;flex-direction:column;gap:14px}
.bubble{max-width:74%;border-radius:16px;padding:11px 15px}
.bubble .subj{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;
  opacity:.8;margin-bottom:4px}
.bubble .txt{white-space:pre-wrap;font-size:13.5px;line-height:1.65}
.bubble .meta{font-size:10px;margin-top:6px;opacity:.75;display:flex;gap:7px;align-items:center;
  font-family:"Cascadia Code",Consolas,monospace}
.bubble.out{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:5px}
.bubble.in{align-self:flex-start;background:var(--panel);border:1px solid var(--line);color:var(--text);
  border-bottom-left-radius:5px}
.msgthread .empty{margin:auto;color:var(--muted);text-align:center;font-size:13px}

/* composer pinned to the bottom of the pane */
.msgcompose{border-top:1px solid var(--line);padding:13px 16px;background:var(--panel);
  display:flex;flex-direction:column;gap:9px}
.msgcompose textarea{min-height:66px;resize:vertical}
.msgcompose .crow{display:flex;justify-content:space-between;align-items:center;gap:12px}
.msgcompose .hint{color:var(--muted);font-size:11px}

.msgempty{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  color:var(--muted);padding:40px;height:100%;font-size:13px;line-height:1.9;gap:6px}
.msgempty .big{font-size:34px;opacity:.5}

.login-wrap{max-width:380px;margin:8vh auto;padding:0 20px}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:32px}
.login-brand{font-size:24px;font-weight:700;text-align:center;margin-bottom:6px}
.login-sub{text-align:center;color:var(--muted);margin-bottom:24px}
.err{background:rgba(239,68,68,.14);border:1px solid var(--bad);color:var(--text);
  padding:10px 12px;border-radius:8px;margin-bottom:14px;font-size:13px}
.ok{background:rgba(34,197,94,.14);border:1px solid var(--ok);color:var(--text);
  padding:10px 12px;border-radius:8px;margin-bottom:14px;font-size:13px}

/* ── Mobile / PWA (phone + "Add to Home Screen" app) ──────────────────────── */
@media (max-width: 640px){
  body{font-size:15px}
  .topbar{gap:10px;padding:10px 14px;flex-wrap:wrap;position:static}
  .brand{font-size:15px;flex:1 1 100%}
  .mainnav{order:3;flex:1 1 100%;gap:4px;overflow-x:auto;-webkit-overflow-scrolling:touch;
    flex-wrap:nowrap;padding-bottom:2px}
  .mainnav a{white-space:nowrap;padding:8px 12px;font-size:13px}
  .userbox{gap:8px}
  .wrap{padding:16px 14px 48px}
  h1{font-size:20px}

  /* wide tables scroll horizontally instead of breaking the layout */
  .panel > table, .card > table{display:block;overflow-x:auto;white-space:nowrap}

  /* the two-pane inbox stacks: customer list on top, conversation below */
  .msgapp{grid-template-columns:1fr;height:auto;min-height:0}
  .msgside{border-inline-end:none;border-bottom:1px solid var(--line);max-height:38vh}
  .msgthread{min-height:220px}
  .bubble{max-width:88%}

  /* tap targets: comfortable buttons + inputs */
  .btn{padding:11px 16px}
  input,select,textarea{padding:11px 12px;font-size:16px}   /* 16px = no iOS zoom */
  .searchbar input,.searchbar select{max-width:none;flex:1 1 100%}
  .row{grid-template-columns:1fr}
}

/* honour the phone's safe areas (notch) when launched as an installed app */
@media (display-mode: standalone){
  .topbar{padding-top:calc(12px + env(safe-area-inset-top))}
}