:root{
  --bg: #f5f6f8;
  --panel: #ffffff;
  --ink: #1a2332;
  --ink-dim: #5b6472;
  --line: #e3e6ea;
  --sidebar: #14202e;
  --sidebar-ink: #c7d0dc;
  --sidebar-ink-dim: #7c8899;
  --accent: #0f7a70;
  --accent-ink: #ffffff;
  --ok: #1a9e5c;
  --warn: #b8860b;
  --danger: #c0392b;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  --sans: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
}
#app{display:flex; min-height:100vh}

/* ---- login ---- */
#login-screen{
  display:flex; align-items:center; justify-content:center; height:100vh; width:100%;
  background: var(--sidebar);
}
.login-box{
  background: var(--panel); padding: 32px 28px; border-radius: 10px; width: 300px;
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.login-box h1{font-size:16px; margin:0 0 4px; letter-spacing:.02em}
.login-box p{color:var(--ink-dim); font-size:12px; margin:0 0 20px}
.login-box input{width:100%; padding:10px 12px; border:1px solid var(--line); border-radius:6px; font-size:14px; margin-bottom:10px}
.login-box button{width:100%; padding:10px; border:none; border-radius:6px; background:var(--accent); color:var(--accent-ink); font-weight:600; cursor:pointer}
.login-error{color:var(--danger); font-size:12px; min-height:16px; margin-top:6px}

/* ---- sidebar ---- */
#sidebar{
  width: 200px; flex-shrink:0; background: var(--sidebar); color: var(--sidebar-ink);
  padding: 20px 14px; display:flex; flex-direction:column; gap: 4px;
}
.brand{font-size:13px; letter-spacing:.06em; text-transform:uppercase; color: var(--sidebar-ink-dim); margin: 0 8px 18px}
.brand b{color:#fff}
.navbtn{
  text-align:left; background:none; border:none; color: var(--sidebar-ink); padding:9px 10px; border-radius:6px;
  cursor:pointer; font-size:14px; display:flex; align-items:center; gap:8px;
}
.navbtn:hover{background: rgba(255,255,255,.06)}
.navbtn.active{background: var(--accent); color:#fff}
.sidebar-spacer{flex:1}
.logout-btn{color: var(--sidebar-ink-dim); background:none; border:none; cursor:pointer; font-size:12px; text-align:left; padding:9px 10px}
.logout-btn:hover{color:#fff}

/* ---- main ---- */
#main{flex:1; padding: 26px 30px; overflow-y:auto}
.view-header{display:flex; align-items:center; justify-content:space-between; margin-bottom:18px}
.view-header h2{margin:0; font-size:19px}
.toolbar{display:flex; gap:8px; align-items:center}
input[type=text], input[type=search], select{
  border:1px solid var(--line); border-radius:6px; padding:8px 10px; font-size:13px; background:#fff;
}
button.primary{background:var(--accent); color:#fff; border:none; border-radius:6px; padding:9px 14px; font-size:13px; font-weight:600; cursor:pointer}
button.primary:hover{filter:brightness(1.08)}
button.ghost{background:none; border:1px solid var(--line); border-radius:6px; padding:8px 12px; font-size:13px; cursor:pointer; color:var(--ink)}
button.ghost:hover{background:#eef0f2}
button.danger-link{background:none; border:none; color:var(--danger); cursor:pointer; font-size:12px}

/* ---- stat cards ---- */
.stats{display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-bottom:22px}
.stat{background:var(--panel); border:1px solid var(--line); border-radius:10px; padding:16px}
.stat .num{font-family:var(--mono); font-size:24px; font-weight:600}
.stat .label{color:var(--ink-dim); font-size:12px; margin-top:4px}
.stat.danger .num{color:var(--danger)}
.stat.warn .num{color:var(--warn)}
.stat.ok .num{color:var(--ok)}

/* ---- table ---- */
table{width:100%; border-collapse:collapse; background:var(--panel); border-radius:10px; overflow:hidden; border:1px solid var(--line)}
th{
  text-align:left; font-size:11px; text-transform:uppercase; letter-spacing:.04em; color:var(--ink-dim);
  padding:10px 12px; border-bottom:1px solid var(--line); background:#fafbfc;
}
td{padding:10px 12px; border-bottom:1px solid var(--line); font-size:13px; vertical-align:middle}
tr:last-child td{border-bottom:none}
tr.clickable{cursor:pointer}
tr.clickable:hover{background:#f7f9fb}
td.num, .mono{font-family:var(--mono)}

.dot{display:inline-block; width:9px; height:9px; border-radius:50%; margin-right:7px}
.dot.ok{background:var(--ok)}
.dot.warn{background:var(--warn)}
.dot.danger{background:var(--danger)}
.dot.none{background:#c6cbd2}

.badge{font-size:11px; padding:2px 7px; border-radius:20px; background:#eef0f2; color:var(--ink-dim)}

/* ---- modal ---- */
.overlay{position:fixed; inset:0; background:rgba(15,20,25,.5); display:flex; align-items:flex-start; justify-content:center; padding:40px 20px; overflow-y:auto; z-index:50}
.modal{background:var(--panel); border-radius:12px; width:560px; max-width:100%; padding:24px}
.modal h3{margin:0 0 16px; font-size:16px}
.modal .close{position:absolute}
.form-row{display:flex; flex-direction:column; gap:4px; margin-bottom:12px}
.form-row label{font-size:12px; color:var(--ink-dim)}
.form-row input, .form-row select, .form-row textarea{
  border:1px solid var(--line); border-radius:6px; padding:9px 10px; font-size:13px; font-family:var(--sans);
}
.form-grid{display:grid; grid-template-columns:1fr 1fr; gap:0 12px}
.modal-actions{display:flex; justify-content:flex-end; gap:8px; margin-top:16px}

.section-title{font-size:12px; text-transform:uppercase; letter-spacing:.04em; color:var(--ink-dim); margin:20px 0 8px}
.subtable{width:100%; font-size:12px}
.subtable td{padding:6px 8px}
.subtable a{color:var(--accent)}

.empty{color:var(--ink-dim); font-size:13px; padding:30px; text-align:center}