:root {
  --bg: #0f1420;
  --panel: #161d2e;
  --panel-2: #1d2740;
  --border: #2a3550;
  --text: #e6ebf5;
  --text-dim: #8f9bb8;
  --accent: #4f7cff;
  --ok: #2ecc71;
  --warning: #f5b942;
  --critical: #ff5c5c;
  --offline: #6b7688;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.hidden { display: none !important; }

/* ---------- Login ---------- */
.login-screen {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, #1a2340, #0b0f1a);
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 320px;
  text-align: center;
}
.login-card h1 { margin: 0 0 4px; }
.login-card p { color: var(--text-dim); margin-top: 0; font-size: 14px; }
.login-card input {
  width: 100%;
  padding: 10px 12px;
  margin: 16px 0 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
}
.login-card button {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: white;
  font-weight: 600;
  cursor: pointer;
}
.login-hint { font-size: 12px; color: var(--text-dim); margin-top: 12px; }
.login-error { color: var(--critical); font-size: 13px; min-height: 18px; }

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
}

.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px;
  overflow-y: auto;
}
.sidebar-header { margin-bottom: 16px; }
.logo { font-size: 18px; font-weight: 700; }

.stats-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 20px;
}
.stat-chip {
  border-radius: 8px;
  padding: 8px 4px;
  text-align: center;
  background: var(--panel-2);
  cursor: pointer;
  border: 1px solid transparent;
}
.stat-chip .num { font-size: 18px; font-weight: 700; display: block; }
.stat-chip .lbl { font-size: 10px; color: var(--text-dim); text-transform: uppercase; }
.stat-chip.ok .num { color: var(--ok); }
.stat-chip.warning .num { color: var(--warning); }
.stat-chip.critical .num { color: var(--critical); }
.stat-chip.offline .num { color: var(--offline); }

.sidebar-section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dim);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: 8px 0;
}
.icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 16px;
  padding: 2px 6px;
  border-radius: 6px;
}
.icon-btn:hover { background: var(--panel-2); color: var(--text); }

.folder-tree { flex: 1; overflow-y: auto; }
.folder-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-dim);
  user-select: none;
}
.folder-item:hover { background: var(--panel-2); }
.folder-item.active { background: var(--accent); color: white; }
.folder-item.drag-over { outline: 2px dashed var(--accent); }
.folder-item .count { margin-left: auto; font-size: 11px; opacity: .7; }
.folder-item .folder-actions { display: none; gap: 4px; }
.folder-item:hover .folder-actions { display: flex; }
.folder-item .folder-actions button {
  background: none; border: none; color: inherit; cursor: pointer; font-size: 11px; opacity: .8;
}

.sidebar-footer { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.sidebar-btn {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 6px;
}
.sidebar-btn:hover { border-color: var(--accent); }
.sidebar-btn.subtle { color: var(--text-dim); background: transparent; border-color: transparent; }
.badge {
  margin-left: auto;
  background: var(--critical);
  color: white;
  border-radius: 999px;
  padding: 0 6px;
  font-size: 11px;
}

/* ---------- Main ---------- */
.main { padding: 20px 28px; overflow-y: auto; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 16px;
  flex-wrap: wrap;
}
.topbar h2 { margin: 0; }
.topbar-actions { display: flex; gap: 8px; }
.topbar-actions input, .topbar-actions select {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 13px;
}
.topbar-actions input { width: 280px; }

.equipos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.equipo-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  cursor: grab;
  transition: border-color .15s;
}
.equipo-card:hover { border-color: var(--accent); }
.equipo-card.dragging { opacity: .4; }

.equipo-card-top { display: flex; justify-content: space-between; align-items: flex-start; }
.equipo-card-top .hostname { font-weight: 700; font-size: 15px; }
.equipo-card-top .ip { color: var(--text-dim); font-size: 12px; }

.status-dot {
  width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; margin-top: 4px;
}
.status-dot.ok { background: var(--ok); }
.status-dot.warning { background: var(--warning); }
.status-dot.critical { background: var(--critical); box-shadow: 0 0 8px var(--critical); }
.status-dot.offline { background: var(--offline); }

.equipo-card .meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 10px;
}
.equipo-card .bar-bg {
  background: var(--panel-2);
  border-radius: 6px;
  height: 6px;
  margin-top: 4px;
  overflow: hidden;
}
.equipo-card .bar-fill { height: 100%; border-radius: 6px; }
.equipo-card .bar-fill.ok { background: var(--ok); }
.equipo-card .bar-fill.warning { background: var(--warning); }
.equipo-card .bar-fill.critical { background: var(--critical); }

.empty-msg { color: var(--text-dim); text-align: center; margin-top: 60px; }

/* ---------- Detail / modal ---------- */
.detail-panel { position: fixed; inset: 0; z-index: 50; }
.detail-overlay { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.detail-content {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 420px;
  max-width: 92vw;
  background: var(--panel);
  border-left: 1px solid var(--border);
  padding: 24px;
  overflow-y: auto;
}
#alerts-panel .detail-content { width: 480px; }
.detail-close { position: absolute; top: 16px; right: 16px; }

.detail-body h3 { margin-top: 0; }
.detail-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.detail-row span:first-child { color: var(--text-dim); }
.disk-block { background: var(--panel-2); border-radius: 8px; padding: 10px; margin-top: 8px; }
.disk-block .bar-bg { background: #0f1420; height: 8px; border-radius: 6px; overflow: hidden; margin-top: 6px; }
.disk-block .bar-fill { height: 100%; }

.notes-box {
  width: 100%;
  min-height: 70px;
  margin-top: 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  padding: 8px;
  font-size: 13px;
  resize: vertical;
}
.save-notes-btn {
  margin-top: 6px;
  padding: 6px 12px;
  border-radius: 6px;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-size: 12px;
}

.install-help { font-size: 12px; color: var(--text-dim); line-height: 1.5; }
.install-help code { background: var(--panel-2); padding: 1px 5px; border-radius: 4px; }

.danger-actions { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.sidebar-btn.danger { border-color: var(--critical); color: var(--critical); }
.sidebar-btn.danger:hover { background: rgba(255, 92, 92, 0.1); }

.alert-item {
  background: var(--panel-2);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 8px;
  border-left: 3px solid var(--offline);
}
.alert-item.critical { border-left-color: var(--critical); }
.alert-item.warning { border-left-color: var(--warning); }
.alert-item.offline { border-left-color: var(--offline); }
.alert-item .h { font-weight: 700; font-size: 13px; }
.alert-item ul { margin: 4px 0 0; padding-left: 18px; font-size: 12px; color: var(--text-dim); }

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}