:root{
  --bg:#f6f7fb; --surface:#fff; --text:#0f172a; --muted:#64748b; --line:#e5e7ef;
  --brand:#4f46e5; --brand-ink:#fff; --brand-soft:#eef2ff;
  --ok:#059669; --ok-soft:#ecfdf5; --warn:#b45309; --warn-soft:#fffbeb; --bad:#dc2626; --bad-soft:#fef2f2;
  --note:#fef9c3; --radius:12px; --shadow:0 1px 2px rgba(15,23,42,.05),0 4px 16px rgba(15,23,42,.04);
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0b1020; --surface:#121a2e; --text:#e6e9f2; --muted:#94a3b8; --line:#232d45;
  --brand:#818cf8; --brand-ink:#0b1020; --brand-soft:#1e2445;
  --ok:#34d399; --ok-soft:#0f2a22; --warn:#fbbf24; --warn-soft:#2a210c; --bad:#f87171; --bad-soft:#2c1414;
  --note:#2b2a12; --shadow:none;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
h1{font-size:26px;line-height:1.2;margin:0 0 12px;letter-spacing:-.01em} h3{font-size:15px;margin:0 0 8px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.narrow{max-width:440px;margin:40px auto}
.narrow-wide{max-width:720px;margin:24px auto}
.muted{color:var(--muted)} .small{font-size:13px} .right{text-align:right} .nowrap{white-space:nowrap}
.sr{position:absolute;left:-9999px}

/* top bar */
.topbar{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text)} .brand:hover{text-decoration:none}
.logo{width:30px;height:30px;border-radius:8px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-weight:800}
.nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.nav>a{color:var(--muted);font-weight:500} .nav>a.on{color:var(--text)} .nav>a.btn{color:var(--brand-ink)}
.who{font-size:13px;color:var(--muted);padding-left:12px;border-left:1px solid var(--line)}
.inline{display:inline}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:var(--brand-ink);border:0;border-radius:9px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none!important}
.btn:hover{filter:brightness(1.07)} .btn-sm{padding:6px 12px;font-size:14px} .btn-lg{padding:12px 20px;font-size:16px}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)} .btn-block{width:100%}
button.link{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;padding:0} button.link.muted{color:var(--muted)} .danger{color:var(--bad)!important}

/* cards & forms */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.form{display:grid;gap:14px} .form h3{margin-top:10px}
label{display:grid;gap:6px;font-weight:600;font-size:14px}
input,select,textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:10px 12px;width:100%;font-weight:400}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:-1px;border-color:transparent}
textarea{resize:vertical;min-height:110px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check{display:flex;align-items:center;gap:8px;font-weight:500} .check input{width:auto}
.inline-form{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:16px;margin-bottom:16px} .inline-form input,.inline-form select{width:auto;flex:1 1 180px}

/* flashes */
.flash{padding:12px 16px;border-radius:10px;margin:16px 0;border:1px solid var(--line);background:var(--surface)}
.flash-success{background:var(--ok-soft);border-color:transparent;color:var(--ok)}
.flash-error{background:var(--bad-soft);border-color:transparent;color:var(--bad)}
.flash-info{background:var(--brand-soft);border-color:transparent}

/* hero */
.hero{text-align:center;padding:64px 0 40px} .hero h1{font-size:40px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:48px}

/* page parts */
.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:28px 0 16px;flex-wrap:wrap} .page-head h1{margin:0}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;overflow-x:auto}
.tabs a{padding:10px 14px;color:var(--muted);font-weight:600;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap} .tabs a.on{color:var(--text);border-color:var(--brand)} .tabs a:hover{text-decoration:none;color:var(--text)}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px} .filters input{flex:1 1 240px;width:auto} .filters select{width:auto}
.empty{text-align:center;padding:48px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:24px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;color:var(--text)} .stat:hover{text-decoration:none;border-color:var(--brand)}
.stat-n{font-size:28px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums} .stat-l{color:var(--muted);font-size:13px}
.stat-hot .stat-n{color:var(--bad)}

/* list (customer) */
.list{display:grid;gap:8px}
.list-row{display:flex;justify-content:space-between;align-items:center;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;color:var(--text)}
.list-row:hover{text-decoration:none;border-color:var(--brand)}
.lr-title{font-weight:600;display:flex;align-items:center;gap:8px} .lr-side{display:flex;gap:6px;flex-shrink:0}
.dot{width:8px;height:8px;border-radius:50%;background:var(--brand);display:inline-block}

/* table (staff) */
.table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top} .table tr:last-child td{border-bottom:0}
.table tbody tr[onclick]{cursor:pointer} .table tbody tr:hover{background:var(--bg)}
.table td a{color:var(--text)} .table select{width:auto;padding:5px 8px}
.needs-reply td:first-child{box-shadow:inset 3px 0 0 var(--brand)}
.faded{opacity:.5}
.rename{display:flex;gap:8px;align-items:center} .rename input{max-width:320px;padding:6px 10px}

/* badges */
.badge,.chip{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap;background:var(--bg);color:var(--muted);border:1px solid var(--line)}
.status-open{background:var(--brand-soft);color:var(--brand);border-color:transparent}
.status-pending{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.status-resolved{background:var(--ok-soft);color:var(--ok);border-color:transparent}
.status-closed{background:var(--bg);color:var(--muted)}
.priority-low{color:var(--muted)} .priority-medium{color:var(--text)}
.priority-high{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.priority-urgent{background:var(--bad-soft);color:var(--bad);border-color:transparent}
.chip-staff{background:var(--brand-soft);color:var(--brand);border-color:transparent} .chip-note{background:var(--note);color:var(--warn);border-color:transparent}

/* ticket view */
.back{display:inline-block;margin:20px 0 8px}
.ticket-layout{display:grid;grid-template-columns:1fr 300px;gap:24px;align-items:start;margin-bottom:40px}
.ticket-head{margin-bottom:20px} .ticket-head h1{margin:4px 0 10px}
.timeline{display:grid;gap:12px;margin-bottom:16px}
.msg{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.msg header{display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap}
.msg-staff{border-left:3px solid var(--brand)} .msg-internal{background:var(--note);border-left-color:var(--warn)}
.msg-body{white-space:normal;overflow-wrap:anywhere}
.avatar{width:28px;height:28px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:700;font-size:13px}
.event{text-align:center;padding:2px 0}
.reply{padding:16px} .reply textarea{margin-bottom:12px}
.reply-actions{display:flex;gap:12px;align-items:center;justify-content:flex-end;flex-wrap:wrap} .reply-actions select{width:auto;padding:6px 10px}
.side{padding:18px;margin-bottom:16px} .side p{margin:0 0 14px}

.foot{color:var(--muted);font-size:13px;padding:32px 20px;text-align:center}

@media (max-width:900px){.stats{grid-template-columns:repeat(3,1fr)} .ticket-layout{grid-template-columns:1fr}}
@media (max-width:640px){
  .wrap{padding:0 16px} .row2,.grid3{grid-template-columns:1fr} .stats{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:30px} .list-row{flex-direction:column;align-items:flex-start} .who{display:none}
  .card{padding:18px}
}