:root{--ink:#0f172a;--muted:#5b6475;--bg:#f7f7f4;--card:#fff;--accent:#e4572e;--line:#e5e5e0}
*{box-sizing:border-box}
body{margin:0;font-family:'IBM Plex Sans Thai',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:var(--ink)}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.top{background:#fff;border-bottom:1px solid var(--line);margin-bottom:28px}
.top .wrap{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;flex-wrap:wrap;gap:10px}
.top nav{display:flex;gap:18px;align-items:center;flex-wrap:wrap;font-size:.95rem}
.top nav a{text-decoration:none;color:var(--muted)}
.who{color:var(--ink);font-weight:600}
.logo{font-weight:700;font-size:1.25rem;text-decoration:none}
.logo span{color:var(--accent)} .logo small{font-weight:400;color:var(--muted);font-size:.8rem;margin-left:4px}
.logo.big{font-size:2rem;text-align:center}
h1{font-size:1.6rem} h2{font-size:1.2rem;margin-top:36px}
.muted{color:var(--muted)} .small{font-size:.85rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.grid h3{margin:0;font-size:1rem;color:var(--muted)} .num{font-size:2rem;font-weight:700;margin:4px 0 0}
.login{max-width:380px;margin:60px auto;text-align:center}
.login form{text-align:left;margin-top:20px}
label{display:block;margin-bottom:14px;font-size:.92rem;font-weight:600}
input,select,textarea{display:block;width:100%;margin-top:5px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
button{background:var(--ink);color:#fff;border:0;padding:11px 20px;border-radius:8px;font:inherit;font-weight:600;cursor:pointer}
button.link{background:none;color:var(--accent);padding:4px 6px;font-weight:600}
.form{max-width:520px}
.alert{background:#fde8e3;border:1px solid #f5b8a8;color:#8a2a12;padding:10px 14px;border-radius:8px;margin:14px 0}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:.92rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:#f1f1ec;font-weight:600}
tr.off td{color:#aaa}
.actions form{display:flex;gap:4px;align-items:center;margin-bottom:4px}
.actions input{width:120px;margin:0;padding:5px 8px}
.tag{padding:2px 8px;border-radius:20px;font-size:.8rem;background:#eee}
.tag.admin{background:#fde8e3}.tag.engineer{background:#e3eefd}.tag.customer{background:#e5f6e8}
.foot{color:var(--muted);font-size:.8rem;padding:40px 20px}
@media(max-width:700px){table{display:block;overflow-x:auto}}