/* Nimbus — shared dark theme */
:root {
  --bg:        #0d1117;
  --surface:   #161b22;
  --border:    #30363d;
  --accent:    #58a6ff;
  --accent2:   #3fb950;
  --warn:      #d29922;
  --danger:    #f85149;
  --text:      #e6edf3;
  --muted:     #8b949e;
  --radius:    8px;
  --font:      'Inter', 'Segoe UI', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Navigation ─────────────────────────────────────────────────────────── */
nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  height: 56px;
  gap: 32px;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav .logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.5px;
  text-decoration: none;
  margin-right: 16px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

nav a:hover,
nav a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

nav .spacer { flex: 1; }

nav .status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

nav .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}
nav .dot.online  { background: var(--accent2); box-shadow: 0 0 6px var(--accent2); }
nav .dot.offline { background: var(--danger);  }
nav .dot.warn    { background: var(--warn);    }

/* ── Page layout ─────────────────────────────────────────────────────────── */
main {
  flex: 1;
  padding: 32px 24px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

h1 { font-size: 22px; font-weight: 600; margin-bottom: 4px; }
.page-sub { color: var(--muted); margin-bottom: 28px; font-size: 13px; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Grid ────────────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ── Stat tiles ──────────────────────────────────────────────────────────── */
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; }
.stat .value { font-size: 26px; font-weight: 700; }
.stat .sub   { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
}
.badge-green  { background: rgba(63,185,80,.15);  color: var(--accent2); border: 1px solid rgba(63,185,80,.3);  }
.badge-blue   { background: rgba(88,166,255,.12); color: var(--accent);  border: 1px solid rgba(88,166,255,.25); }
.badge-yellow { background: rgba(210,153,34,.15); color: var(--warn);    border: 1px solid rgba(210,153,34,.3);  }
.badge-red    { background: rgba(248,81,73,.12);  color: var(--danger);  border: 1px solid rgba(248,81,73,.25);  }
.badge-gray   { background: rgba(139,148,158,.1); color: var(--muted);   border: 1px solid var(--border);        }

/* ── Table ───────────────────────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--muted);
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}
tbody tr { border-bottom: 1px solid var(--border); transition: background 0.1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,.03); }
td { padding: 12px; font-size: 13px; }
td.mono { font-family: 'JetBrains Mono', 'Fira Code', monospace; font-size: 12px; color: var(--muted); }

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 500; }
input[type=text], input[type=password], select, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 9px 12px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 80px; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity 0.15s, background 0.15s;
  text-decoration: none;
}
.btn:hover { opacity: 0.85; }
.btn-primary  { background: var(--accent);  color: #0d1117; }
.btn-success  { background: var(--accent2); color: #0d1117; }
.btn-outline  { background: transparent;    color: var(--text); border-color: var(--border); }
.btn-danger   { background: transparent;    color: var(--danger); border-color: rgba(248,81,73,.4); }
.btn-sm       { padding: 4px 10px; font-size: 12px; }

/* ── Empty state ─────────────────────────────────────────────────────────── */
.empty {
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
}
.empty .icon { font-size: 36px; margin-bottom: 12px; }
.empty p { margin-bottom: 16px; }

/* ── Alert/notice ────────────────────────────────────────────────────────── */
.notice {
  background: rgba(88,166,255,.08);
  border: 1px solid rgba(88,166,255,.25);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 20px;
}

/* ── Modal ───────────────────────────────────────────────────────────────── */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  width: 480px;
  max-width: 95vw;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close { background: none; border: none; color: var(--muted); font-size: 20px; cursor: pointer; line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; position: sticky; bottom: -28px; background: var(--surface); padding: 16px 0; border-top: 1px solid var(--border); }

/* ── Logs/terminal ───────────────────────────────────────────────────────── */
.log-box {
  background: #010409;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 12px;
  line-height: 1.8;
  overflow-y: auto;
  max-height: 320px;
  color: var(--muted);
}
.log-box .log-ok   { color: var(--accent2); }
.log-box .log-warn { color: var(--warn);    }
.log-box .log-err  { color: var(--danger);  }
.log-box .log-info { color: var(--accent);  }

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }