:root{
  --navy:#0F2240; --blue:#1E5FA8; --red:#D81E1E;
  --gray-bg:#F5F7FA; --border:#E2E8F0; --text:#1F2A3A; --muted:#64748B;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',Arial,sans-serif;background:var(--gray-bg);color:var(--text);line-height:1.55}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

/* Header */
.sup-header{background:var(--navy);color:#fff}
.sup-header-inner{max-width:1000px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:16px}
.sup-logo img{display:block}
.sup-badge{background:rgba(255,255,255,.12);color:#cfe0f3;font-size:12px;font-weight:700;letter-spacing:1px;text-transform:uppercase;padding:4px 10px;border-radius:20px}
.sup-nav{margin-left:auto;display:flex;align-items:center;gap:18px;font-size:14px}
.sup-nav a{color:#cfe0f3}
.sup-nav a:hover{color:#fff;text-decoration:none}
.sup-user{color:#8AAFD4;font-size:13px}
.sup-logout{background:var(--red);color:#fff!important;padding:6px 14px;border-radius:6px;font-weight:600}
.sup-logout:hover{opacity:.9;text-decoration:none}

/* Layout */
.sup-main{padding:36px 20px 60px}
.sup-container{max-width:1000px;margin:0 auto}
.sup-footer{background:var(--navy);color:#8AAFD4;font-size:13px;text-align:center;padding:20px}
.sup-footer a{color:#8AAFD4}

h1{font-size:26px;color:var(--navy);margin-bottom:6px}
h2{font-size:19px;color:var(--navy);margin-bottom:14px}
.sub{color:var(--muted);margin-bottom:24px}

/* Cards / panels */
.card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:24px;margin-bottom:22px;box-shadow:0 1px 3px rgba(15,34,64,.05)}
.card h2{margin-bottom:16px}

/* Forms */
.field{margin-bottom:16px}
label{display:block;font-size:13.5px;font-weight:600;color:var(--navy);margin-bottom:6px}
input,select,textarea{width:100%;padding:11px 13px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(30,95,168,.12)}
textarea{min-height:120px;resize:vertical}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

.btn{display:inline-block;background:var(--red);color:#fff;border:none;padding:11px 22px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}
.btn:hover{opacity:.92;text-decoration:none;color:#fff}
.btn-blue{background:var(--blue)}
.btn-ghost{background:#fff;color:var(--navy);border:1px solid var(--border)}
.btn-ghost:hover{color:var(--navy);border-color:var(--blue)}
.btn-sm{padding:7px 14px;font-size:13px}

/* Alerts */
.alert{padding:13px 16px;border-radius:8px;margin-bottom:20px;font-size:14px}
.alert-error{background:#FDECEC;border-left:4px solid var(--red);color:#8a1f1f}
.alert-ok{background:#E9F6EE;border-left:4px solid #2D8A4E;color:#1e6236}
.alert-info{background:#EBF3FB;border-left:4px solid var(--blue);color:#1a4a80}

/* Table */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border)}
th{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--gray-bg)}

/* Status badges */
.status{display:inline-block;font-size:12px;font-weight:700;padding:4px 11px;border-radius:20px}
.st-open{background:#FDECEC;color:#c0392b}
.st-progress{background:#FFF4E0;color:#B7791F}
.st-done{background:#E9F6EE;color:#2D8A4E}

/* Login */
.login-wrap{max-width:400px;margin:6vh auto 0}
.login-wrap .card{padding:32px}
.login-title{text-align:center;margin-bottom:24px}
.login-title img{height:34px;margin-bottom:14px}

/* Ticket thread */
.reply{border:1px solid var(--border);border-radius:10px;padding:16px 18px;margin-bottom:14px}
.reply.staff{background:#EBF3FB;border-color:#cfe0f3}
.reply-meta{font-size:12.5px;color:var(--muted);margin-bottom:6px}
.reply-meta strong{color:var(--navy)}
.reply-body{white-space:pre-wrap;font-size:14px}

.muted{color:var(--muted)}
.right{text-align:right}
.mt{margin-top:18px}
.empty{text-align:center;color:var(--muted);padding:40px 20px}

@media(max-width:640px){
  .row{grid-template-columns:1fr}
  .sup-nav{gap:12px;font-size:13px}
  .sup-user{display:none}
  table{font-size:13px}
  th:nth-child(3),td:nth-child(3){display:none}
}