* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #0f172a;
  --bg2: #1e293b;
  --panel: #1e293b;
  --border: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #2563eb;
  --accent-h: #1d4ed8;
  --green: #22c55e;
  --red: #ef4444;
}
body {
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Auth / centered card ---- */
.auth-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
  padding: 2rem;
}
.card {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.4rem 2rem;
  width: 100%; max-width: 400px;
}
.card h1 { font-size: 1.5rem; margin-bottom: 0.3rem; color: #fff; }
.card .sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 1.6rem; }

label { display: block; font-size: 0.82rem; color: var(--muted); margin: 1rem 0 0.35rem; }
input[type=text], input[type=email], input[type=password], select {
  width: 100%;
  padding: 0.65rem 0.8rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

.btn {
  display: inline-block; width: 100%;
  background: var(--accent); color: #fff;
  border: none; border-radius: 8px;
  padding: 0.7rem 1.2rem; font-size: 0.95rem;
  cursor: pointer; margin-top: 1.4rem;
  transition: background 0.2s;
}
.btn:hover { background: var(--accent-h); }
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn.danger { background: var(--red); }
.btn.small { width: auto; padding: 0.4rem 0.8rem; font-size: 0.82rem; margin-top: 0; }

.msg { margin-top: 1rem; font-size: 0.85rem; padding: 0.6rem 0.8rem; border-radius: 8px; display: none; }
.msg.ok { display: block; background: rgba(34,197,94,0.12); color: #4ade80; border: 1px solid rgba(34,197,94,0.3); }
.msg.err { display: block; background: rgba(239,68,68,0.12); color: #fca5a5; border: 1px solid rgba(239,68,68,0.3); }

/* ---- Dashboard layout ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 1.5rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topbar .brand { font-weight: 700; color: #fff; }
.topbar .user-box { display: flex; align-items: center; gap: 0.8rem; font-size: 0.88rem; color: var(--muted); }
.badge {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem; border-radius: 20px;
}
.badge.admin { background: rgba(37,99,235,0.2); color: #93c5fd; }
.badge.cs { background: rgba(34,197,94,0.18); color: #86efac; }

.layout { display: flex; min-height: calc(100vh - 57px); }
.sidebar {
  width: 220px; background: var(--panel); border-right: 1px solid var(--border);
  padding: 1rem 0;
}
.sidebar a {
  display: block; padding: 0.7rem 1.3rem; color: var(--muted);
  font-size: 0.9rem; border-left: 3px solid transparent;
}
.sidebar a.active { color: #fff; border-left-color: var(--accent); background: rgba(37,99,235,0.08); }
.sidebar a:hover { color: #fff; text-decoration: none; }

.content { flex: 1; padding: 1.5rem; overflow-x: auto; }
.content h2 { font-size: 1.25rem; margin-bottom: 1rem; color: #fff; }
.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.3rem; margin-bottom: 1.2rem;
}
.panel h3 { font-size: 0.95rem; color: #fff; margin-bottom: 0.9rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
tr:hover td { background: rgba(255,255,255,0.02); }

.status-pill { font-size: 0.78rem; padding: 0.2rem 0.55rem; border-radius: 20px; }
.status-pill.on { background: rgba(34,197,94,0.15); color: #4ade80; }
.status-pill.off { background: rgba(239,68,68,0.15); color: #fca5a5; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.stat {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.1rem 1.3rem;
}
.stat .label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat .value { font-size: 1.7rem; font-weight: 700; color: #fff; margin-top: 0.3rem; }

.filters { display: flex; gap: 0.8rem; align-items: flex-end; flex-wrap: wrap; margin-bottom: 1rem; }
.filters label { margin: 0; }
.filters .field { display: flex; flex-direction: column; gap: 0.3rem; }
.placeholder-note {
  color: var(--muted); font-size: 0.85rem;
  background: rgba(255,255,255,0.03); border: 1px dashed var(--border);
  border-radius: 10px; padding: 1rem; text-align: center;
}