:root {
    --bg: #eef2f6;
    --card: #ffffff;
    --text: #1f2933;
    --muted: #62748a;
    --line: #d7dee7;
    --accent: #0b6e99;
    --accent-hover: #085578;
    --ok: #157347;
    --warn: #9a6700;
    --danger: #b42318;
    --danger-bg: #fde8e6;
    --ok-bg: #e8f6ee;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    background: linear-gradient(180deg, #dfe8f1 0%, var(--bg) 220px);
    color: var(--text);
}
.wrap { max-width: 1280px; margin: 0 auto; padding: 24px 18px 48px; }
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(20, 40, 70, 0.06);
}
.login-card { max-width: 420px; margin: 10vh auto 0; }
h1, h2, h3 { margin: 0 0 14px; }
.muted { color: var(--muted); font-size: 0.92rem; }
label { display: block; font-weight: 600; margin: 12px 0 6px; }
input[type="text"], input[type="password"], input[type="date"], input[type="number"], input[type="file"], select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    font: inherit;
    background: #fff;
}
textarea { min-height: 90px; resize: vertical; }
button, .btn {
    display: inline-block;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    padding: 10px 14px;
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}
button:hover, .btn:hover { background: var(--accent-hover); }
button.secondary, .btn.secondary { background: #516173; }
button.danger, .btn.danger { background: var(--danger); }
button:disabled { opacity: 0.55; cursor: not-allowed; }
.msg { padding: 12px 14px; border-radius: 8px; margin: 0 0 16px; }
.msg.success { background: var(--ok-bg); color: var(--ok); border: 1px solid #b7e0c5; }
.msg.error { background: var(--danger-bg); color: var(--danger); border: 1px solid #f2c1bc; }
.topnav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.topnav .brand { font-weight: 700; font-size: 1.1rem; }
.topnav .links { display: flex; flex-wrap: wrap; gap: 8px; }
.topnav a {
    text-decoration: none;
    color: var(--text);
    background: rgba(255,255,255,0.7);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 12px;
}
.topnav a.active, .topnav a:hover { background: #fff; border-color: var(--accent); color: var(--accent); }
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
    margin: 18px 0 8px;
}
.stat {
    background: #f7fafc;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 14px;
    text-align: center;
}
.stat .num { font-size: 1.6rem; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 0.85rem; }
.section {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: end;
    margin-bottom: 14px;
}
.toolbar .field { min-width: 160px; flex: 1; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #f7fafc; font-size: 0.9rem; }
.status-active { color: var(--ok); font-weight: 700; }
.status-migration_pending { color: var(--warn); font-weight: 700; }
.status-pending, .status-pending_activation, .status-blocked, .status-expired, .status-hardware_mismatch {
    color: var(--danger); font-weight: 700;
}
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.bulk-bar {
    position: sticky;
    bottom: 12px;
    background: #102a43;
    color: #fff;
    border-radius: 12px;
    padding: 12px 14px;
    display: none;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.bulk-bar.visible { display: flex; }
.bulk-bar input, .bulk-bar select { width: auto; min-width: 140px; }
.bulk-bar label { margin: 0; font-weight: 500; color: #d9e2ec; }
code { font-size: 0.85rem; }
@media (max-width: 900px) {
    .grid, .grid-3 { grid-template-columns: 1fr; }
}