:root {
    --bg:        #eef1f4;
    --surface:   #ffffff;
    --ink:       #16202e;
    --ink-soft:  #5a6678;
    --line:      #dde2e9;
    --accent:    #1d4ed8;
    --accent-dk: #1539a3;
    --online:    #16a34a;
    --offline:   #9aa4b2;
    --warn:      #d97706;
    --danger:    #dc2626;
    --radius:    10px;
    --mono:      ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;
    --sans:      "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--sans);
    background: var(--bg);
    color: var(--ink);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ---- Nagłówek ---- */
.topbar {
    background: var(--ink);
    color: #fff;
    padding: 18px 0;
    border-bottom: 3px solid var(--accent);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .dot {
    width: 11px; height: 11px; border-radius: 50%;
    background: var(--online);
    box-shadow: 0 0 0 4px rgba(22,163,74,.25);
    animation: pulse 2.4s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }
.brand h1 { font-size: 19px; margin: 0; letter-spacing: .2px; font-weight: 650; }
.brand .sub { font-size: 12px; color: #9fb0c9; font-family: var(--mono); margin-top: 2px; }

/* ---- Pasek statystyk ---- */
.stats { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0; }
.stat {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 18px;
    flex: 1; min-width: 130px;
    display: flex; align-items: center; gap: 12px;
}
.stat .num { font-family: var(--mono); font-size: 26px; font-weight: 600; line-height: 1; }
.stat .lbl { font-size: 12px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .6px; }
.stat .bar { width: 4px; align-self: stretch; border-radius: 4px; background: var(--accent); }
.stat.online  .bar { background: var(--online); }
.stat.offline .bar { background: var(--offline); }
.stat.unknown .bar { background: var(--warn); }

/* ---- Pasek narzędzi ---- */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.toolbar form { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; }
.toolbar .spacer { flex: 1; }

input, select, textarea {
    font: inherit;
    color: var(--ink);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    width: 100%;
}
input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
    border-color: var(--accent);
}
.toolbar input[type=search] { max-width: 320px; }
.toolbar select { max-width: 180px; }

/* ---- Przyciski ---- */
.btn {
    display: inline-flex; align-items: center; gap: 7px;
    font: inherit; font-weight: 550;
    padding: 10px 16px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    background: var(--accent); color: #fff;
    cursor: pointer; text-decoration: none;
    white-space: nowrap;
}
.btn:hover { background: var(--accent-dk); border-color: var(--accent-dk); }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.ghost:hover { background: rgba(29,78,216,.08); }
.btn.subtle { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn.subtle:hover { border-color: var(--ink-soft); background: #f7f9fb; }
.btn.danger { background: transparent; color: var(--danger); border-color: transparent; }
.btn.danger:hover { background: rgba(220,38,38,.08); }
.btn.sm { padding: 6px 11px; font-size: 13px; }

/* ---- Tabela urządzeń ---- */
.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
thead th {
    text-align: left; font-size: 11px; letter-spacing: .7px; text-transform: uppercase;
    color: var(--ink-soft); font-weight: 600;
    padding: 13px 16px; border-bottom: 1px solid var(--line); background: #f7f9fb;
}
tbody td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f7f9fb; }

.mono { font-family: var(--mono); font-size: 13px; }
.dev-name { font-weight: 600; }
.dev-meta { font-size: 12px; color: var(--ink-soft); }

/* ---- Wskaźnik statusu ---- */
.status { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 550; }
.status::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--offline); }
.status.online::before  { background: var(--online); box-shadow: 0 0 0 3px rgba(22,163,74,.18); }
.status.offline::before { background: var(--offline); }
.status.unknown::before { background: var(--warn); }

.tag {
    display: inline-block; font-size: 12px; font-family: var(--mono);
    padding: 2px 9px; border-radius: 20px; background: #eef2f7; color: var(--ink-soft);
    border: 1px solid var(--line);
}

.row-actions { display: flex; gap: 4px; justify-content: flex-end; }

/* ---- Formularz ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 12px; font-weight: 600; color: var(--ink-soft);
    text-transform: uppercase; letter-spacing: .5px; margin-bottom: 6px; }
.field .hint { font-size: 12px; color: var(--ink-soft); margin-top: 5px; }
.form-actions { display: flex; gap: 10px; margin-top: 24px; }

.page-head { display: flex; align-items: baseline; justify-content: space-between; margin: 24px 0 4px; gap: 12px; flex-wrap: wrap; }
.page-head h2 { font-size: 22px; margin: 0; }
.page-head .crumb { font-size: 13px; color: var(--ink-soft); }

/* ---- Komunikaty ---- */
.flash { padding: 12px 16px; border-radius: 8px; margin: 18px 0; font-size: 14px; }
.flash.ok   { background: #e7f6ec; color: #14692f; border: 1px solid #b8e3c5; }
.flash.err  { background: #fdeaea; color: #9c1c1c; border: 1px solid #f3c0c0; }
.flash ul { margin: 6px 0 0; padding-left: 20px; }

.empty { text-align: center; padding: 60px 20px; color: var(--ink-soft); }
.empty .big { font-size: 17px; color: var(--ink); margin-bottom: 6px; }

footer.site { text-align: center; color: var(--ink-soft); font-size: 12px; padding: 30px 0 40px; }

@media (max-width: 720px) {
    .form-grid { grid-template-columns: 1fr; }
    .hide-sm { display: none; }
    thead th.hide-sm { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .brand .dot { animation: none; }
}