:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-2: #f9fafb;
  --border: rgba(34, 36, 38, 0.15);
  --border-lite: rgba(34, 36, 38, 0.1);
  --ink: rgba(0, 0, 0, 0.87);
  --muted: rgba(0, 0, 0, 0.6);
  --accent: #2185d0;
  --accent-dark: #1678c2;
  --accent-bg: #dff0ff;
  --ok: #16ab39;
  --warn: #f2711c;
  --crit: #db2828;
  --header-bg: #1b1c1d;
  --radius: 4px;
  --shadow: 0 1px 2px 0 rgba(34, 36, 38, 0.15);
  --content-width: 960px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.5 Lato, "Helvetica Neue", Arial, Helvetica, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.page-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 24px;
  background: var(--header-bg);
}

.page-header h1 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  white-space: nowrap;
}

.header-nav { display: flex; gap: 4px; }

.header-action {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.header-action:hover { background: rgba(255, 255, 255, 0.15); text-decoration: none; color: #fff; }
.header-action.active { background: rgba(255, 255, 255, 0.18); color: #fff; }

/* Main */
.page-main {
  width: min(var(--content-width), calc(100vw - 48px));
  margin: 28px auto 56px;
}

/* Panel */
.panel {
  margin-bottom: 24px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel > h2 {
  margin: 0;
  padding: 11px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.panel-body {
  padding: 14px 16px;
}

.disk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.disk-card {
  margin-bottom: 0;
}

.progress-wrap {
  border-top: 1px solid var(--border-lite);
}

/* KV table */
.kv-table {
  width: 100%;
  border-collapse: collapse;
}

.kv-table th,
.kv-table td {
  padding: 10px 16px;
  text-align: left;
  vertical-align: top;
  border-top: 1px solid var(--border-lite);
  font-size: 14px;
}

.kv-table th {
  width: 200px;
  background: var(--surface-2);
  border-top: 0;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
}

.kv-table tr:first-child td { border-top: 0; }

/* Progress */
.progress-bar-bg {
  background: rgba(34, 36, 38, 0.12);
  border-radius: var(--radius);
  height: 10px;
  overflow: hidden;
  margin: 4px 0;
}
.progress-bar-fill {
  background: var(--accent);
  height: 100%;
  border-radius: var(--radius);
  transition: width 0.4s ease;
}
.progress-label { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* Buttons */
.button-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}
.button-primary:hover:not(:disabled) { background: var(--accent-dark); }
.button-primary:disabled { opacity: 0.45; cursor: not-allowed; }

.button-danger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: none;
  border-radius: var(--radius);
  background: var(--crit);
  color: #fff;
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}
.button-danger:hover { background: #c82020; }

.button-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.button-secondary:hover { background: var(--surface-2); }

.button-sm { padding: 5px 12px; font-size: 12px; }

.btn-row {
  display: flex;
  gap: 8px;
  padding: 14px 16px;
  border-top: 1px solid var(--border-lite);
  background: var(--surface-2);
}

/* Forms */
.form-body { padding: 16px; display: flex; flex-direction: column; gap: 18px; }

.form-group { display: flex; flex-direction: column; gap: 5px; }

.form-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}

.form-hint { font-size: 12px; color: var(--muted); }

.form-input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--ink);
  padding: 7px 10px;
  font: inherit;
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-bg); }
.form-input[type="number"] { width: 120px; }

.form-select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--ink);
  padding: 7px 28px 7px 10px;
  font: inherit;
  font-size: 13px;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  cursor: pointer;
  transition: border-color 0.15s;
}
.form-select:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-bg); }

/* Checkbox list */
.source-list { display: flex; flex-direction: column; gap: 0; }
.source-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--border-lite);
  cursor: pointer;
  transition: background 0.1s;
}
.source-item:last-child { border-bottom: 0; }
.source-item:hover { background: rgba(33, 133, 208, 0.04); }
.source-item input[type="checkbox"] { width: 15px; height: 15px; accent-color: var(--accent); cursor: pointer; }
.source-item-name { font-size: 13px; font-weight: 600; flex: 1; }
.source-item-path { font-size: 12px; color: var(--muted); font-family: monospace; }

/* Status badges */
.status-ok       { color: var(--ok); font-weight: 600; }
.status-warning  { color: var(--warn); font-weight: 600; }
.status-critical { color: var(--crit); font-weight: 600; }
.status-unknown  { color: var(--muted); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid;
}
.badge-ok       { color: var(--ok);   background: rgba(22,171,57,0.08);  border-color: rgba(22,171,57,0.3); }
.badge-warn     { color: var(--warn); background: rgba(242,113,28,0.08); border-color: rgba(242,113,28,0.3); }
.badge-critical { color: var(--crit); background: rgba(219,40,40,0.08);  border-color: rgba(219,40,40,0.3); }
.badge-unknown  { color: var(--muted); background: var(--surface-2); border-color: var(--border); }

.badge::before { content: '●'; font-size: 8px; }

/* Alerts */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  border-left: 3px solid;
  margin-bottom: 16px;
}
.alert-info { background: var(--accent-bg); border-color: var(--accent); color: var(--ink); }
.alert-warn { background: rgba(242,113,28,0.08); border-color: var(--warn); color: var(--ink); }
.alert-error { background: rgba(219,40,40,0.08); border-color: var(--crit); color: var(--crit); }
.alert-ok { background: rgba(22,171,57,0.08); border-color: var(--ok); color: var(--ink); }

/* Utils */
.hidden { display: none !important; }
.text-muted { color: var(--muted); font-size: 13px; }
.mono { font-family: monospace; font-size: 13px; }

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px; right: 20px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 1000;
}
.toast {
  background: var(--header-bg);
  color: rgba(255,255,255,0.9);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 13px;
  max-width: 320px;
  animation: slideIn 0.15s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
.toast-ok    { border-left: 3px solid var(--ok); }
.toast-error { border-left: 3px solid var(--crit); }

@keyframes slideIn {
  from { transform: translateX(16px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

@media (max-width: 720px) {
  .page-header { flex-wrap: wrap; padding: 12px 16px; }
  .page-main { width: calc(100vw - 24px); margin-top: 20px; }
  .disk-grid { grid-template-columns: 1fr; }
  .kv-table th { width: 130px; }
  .btn-row { flex-wrap: wrap; }
}