/* Dark Mode Refresh */
:root {
  --bg: #0f1115;
  --bg-elev: #151922;
  --card: #151a22;
  --muted: #9aa4b2;
  --text: #e6e9ee;
  --border: #263041;
  --primary: #3b82f6; /* blue-500 */
  --primary-600: #2563eb;
  --success: #22c55e;
  --success-600: #16a34a;
  --danger: #ef4444;
  --danger-600: #dc2626;
  --warn: #f59e0b;
  --row-online: rgba(34,197,94,0.08);
  --row-offline: rgba(239,68,68,0.08);
  --row-paused: rgba(245,158,11,0.08);
  --shadow: 0 6px 24px rgba(0,0,0,0.25);
}

/* Utility */
.hidden { display: none; }

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Header */
header {
  background: linear-gradient(180deg, #0d1016 0%, #0f131c 100%);
  border-bottom: 1px solid var(--border);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
h1 { font-size: 1.25rem; margin: 0; font-weight: 600; }

/* Container */
.container {
  max-width: 1100px;
  margin: 1.5rem auto 2.5rem;
  padding: 0 1rem;
}

.toolbar {
  display: flex;
  justify-content: flex-start;
  gap: .5rem;
  margin-bottom: .75rem;
}

/* Card */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

/* Add form */
.add-form {
  margin: 1rem 0 1.25rem;
  padding: 1rem;
  display: grid;
  grid-template-columns: 1fr 2fr 160px;
  gap: .75rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
}
.add-form input {
  width: 100%;
  padding: .6rem .7rem;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
}
.add-form input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.2);
}
.add-form .form-actions { grid-column: 1 / -1; display: flex; gap: .5rem; }

/* Table */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
thead th {
  position: sticky; top: 0;
  background: #0f141d;
  z-index: 1;
}
th, td {
  padding: .75rem .9rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
tbody tr:hover { background: rgba(255,255,255,0.03); }

/* Row status tint */
.row-online { background-color: var(--row-online); }
.row-offline { background-color: var(--row-offline); }
.row-paused { background-color: var(--row-paused); }

/* Status chips */
.status-online { color: var(--success); font-weight: 600; }
.status-offline { color: var(--danger); font-weight: 600; }
.status-paused { color: var(--warn); font-weight: 600; }

/* Buttons */
button {
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border);
  padding: .55rem .9rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, transform .02s;
}
button:hover { background: #1a2230; border-color: #354153; }
button:active { transform: translateY(1px); }
button.small { padding: .35rem .6rem; font-size: .9rem; }

/* Button intents */
.btn { /* helper class if present */ }
.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.primary:hover { background: var(--primary-600); border-color: var(--primary-600); }
.success { background: var(--success); border-color: var(--success); color: #0a1a10; }
.success:hover { background: var(--success-600); border-color: var(--success-600); color: #fff; }
.danger { background: var(--danger); border-color: var(--danger); color: #1c0b0b; }
.danger:hover { background: var(--danger-600); border-color: var(--danger-600); color: #fff; }
.ghost { background: transparent; color: var(--text); }

/* Header links */
header a { text-decoration: none; }

/* Error */
.error { color: var(--danger); margin-top: 1rem; }

/* Responsive tweaks */
@media (max-width: 720px) {
  .add-form { grid-template-columns: 1fr; }
}