/* ═══ ApisHive Fleet Health Dashboard ═══ */
:root {
  --bg-deep: #000510;
  --bg-card: #0a1628;
  --bg-surface: #0d1f3c;
  --border: rgba(0,229,255,0.15);
  --border-bright: rgba(0,229,255,0.35);
  --cyan: #00e5ff;
  --purple: #ab47bc;
  --amber: #ffb300;
  --green: #00e676;
  --red: #ff1744;
  --text: #e0e0e0;
  --text-dim: #607d8b;
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Exo 2', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg-deep);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ═══ Login ═══ */
#login-screen {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at 50% 30%, rgba(0,229,255,0.06), transparent 70%),
              linear-gradient(var(--bg-deep), #000);
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  width: 380px;
  box-shadow: 0 0 60px rgba(0,229,255,0.08);
}
.login-logo {
  font-size: 48px; color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan);
  margin-bottom: 8px;
}
.login-card h1 {
  font-family: var(--font-display);
  font-size: 22px; color: white;
  text-shadow: 0 0 10px var(--cyan);
}
.login-sub { color: var(--text-dim); font-size: 13px; margin: 4px 0 24px; }
.login-card input {
  display: block; width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: white; font-family: var(--font-body); font-size: 14px;
  margin-bottom: 12px;
  outline: none;
  transition: border 0.2s;
}
.login-card input:focus { border-color: var(--cyan); }
.login-card button[type="submit"] {
  width: 100%;
  background: linear-gradient(135deg, rgba(0,229,255,0.2), rgba(171,71,188,0.2));
  border: 1px solid var(--cyan);
  border-radius: 8px;
  padding: 12px;
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.login-card button:hover { background: rgba(0,229,255,0.15); box-shadow: 0 0 20px rgba(0,229,255,0.2); }
#login-error { color: var(--red); font-size: 12px; margin-top: 12px; }
.spinner {
  width: 16px; height: 16px;
  border: 2px solid transparent; border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.hidden { display: none !important; }

/* ═══ Header ═══ */
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(0,229,255,0.04), transparent);
}
.header-left { display: flex; align-items: center; gap: 12px; }
.header-left .logo { font-size: 28px; color: var(--cyan); text-shadow: 0 0 12px var(--cyan); }
.header-left h1 { font-family: var(--font-display); font-size: 18px; color: white; }
.header-right { display: flex; align-items: center; gap: 16px; }
.badge {
  font-size: 11px; font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
  background: rgba(0,230,118,0.12);
  color: var(--green);
  border: 1px solid rgba(0,230,118,0.3);
}
.badge.error { background: rgba(255,23,68,0.12); color: var(--red); border-color: rgba(255,23,68,0.3); }
.meta { font-size: 11px; color: var(--text-dim); font-family: var(--font-mono); }
.icon-btn {
  background: none; border: 1px solid var(--border); border-radius: 8px;
  color: var(--text-dim); font-size: 18px;
  width: 36px; height: 36px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { border-color: var(--cyan); color: var(--cyan); }

/* ═══ Alerts Bar ═══ */
#alerts-bar {
  padding: 0 24px;
}
.alert {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px;
  margin: 8px 0;
  border-radius: 8px;
  font-size: 13px;
  animation: slideIn 0.3s ease-out;
}
@keyframes slideIn { from { opacity: 0; transform: translateY(-8px); } }
.alert.warn {
  background: rgba(255,179,0,0.08);
  border: 1px solid rgba(255,179,0,0.3);
  color: var(--amber);
}
.alert.crit {
  background: rgba(255,23,68,0.08);
  border: 1px solid rgba(255,23,68,0.3);
  color: var(--red);
}
.alert.ok {
  background: rgba(0,230,118,0.06);
  border: 1px solid rgba(0,230,118,0.2);
  color: var(--green);
}
.alert-icon { font-size: 16px; flex-shrink: 0; }

/* ═══ Fleet Summary ═══ */
#fleet-summary {
  display: flex; gap: 16px;
  padding: 16px 24px;
  flex-wrap: wrap;
}
.summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 24px;
  flex: 1; min-width: 140px;
  text-align: center;
  transition: border 0.3s;
}
.summary-card:hover { border-color: var(--border-bright); }
.summary-val {
  font-family: var(--font-display);
  font-size: 28px; font-weight: 700;
  color: white;
  text-shadow: 0 0 8px rgba(0,229,255,0.3);
}
.summary-label {
  font-size: 11px; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 1px;
  margin-top: 4px;
}

/* ═══ Fleet Grid ═══ */
#fleet-grid { padding: 8px 24px 24px; }

.hub-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 20px;
  overflow: hidden;
  transition: border 0.3s;
}
.hub-group:hover { border-color: var(--border-bright); }
.hub-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(0,229,255,0.06), rgba(171,71,188,0.04));
  border-bottom: 1px solid var(--border);
}
.hub-name-row { display: flex; align-items: center; gap: 10px; }
.hub-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: white;
  box-shadow: 0 0 12px rgba(0,229,255,0.2);
}
.hub-name { font-family: var(--font-display); font-size: 14px; color: white; }
.hub-id { font-family: var(--font-mono); font-size: 10px; color: var(--text-dim); }
.hub-badge {
  font-size: 10px; font-weight: 600;
  padding: 3px 8px; border-radius: 6px;
}
.hub-badge.online { background: rgba(0,230,118,0.12); color: var(--green); border: 1px solid rgba(0,230,118,0.25); }
.hub-badge.offline { background: rgba(255,23,68,0.12); color: var(--red); border: 1px solid rgba(255,23,68,0.25); }
.hub-meta {
  display: flex; gap: 20px;
  padding: 8px 20px;
  background: rgba(0,0,0,0.2);
  font-size: 11px; color: var(--text-dim);
  font-family: var(--font-mono);
}
.hub-meta span { display: flex; align-items: center; gap: 4px; }

.nodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  padding: 16px 20px;
}
.node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.node-card:hover { border-color: var(--border-bright); transform: translateY(-2px); }
.node-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--green);
  border-radius: 0 2px 2px 0;
}
.node-card.stale::before { background: var(--amber); }
.node-card.offline::before { background: var(--red); }
.node-card.uncal::before { background: var(--amber); }

.node-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.node-name { font-family: var(--font-display); font-size: 12px; color: white; }
.node-id { font-family: var(--font-mono); font-size: 9px; color: var(--text-dim); }
.node-status {
  font-size: 9px; font-weight: 600;
  padding: 2px 8px; border-radius: 4px;
}
.node-status.ok { background: rgba(0,230,118,0.12); color: var(--green); }
.node-status.stale { background: rgba(255,179,0,0.12); color: var(--amber); }
.node-status.offline { background: rgba(255,23,68,0.12); color: var(--red); }
.node-status.uncal { background: rgba(255,179,0,0.12); color: var(--amber); }

.sensor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.sensor-cell {
  text-align: center;
  padding: 6px 4px;
  background: rgba(0,0,0,0.3);
  border-radius: 6px;
}
.sensor-val {
  font-family: var(--font-mono);
  font-size: 14px; font-weight: 600;
  color: white;
}
.sensor-val.warn { color: var(--amber); }
.sensor-val.crit { color: var(--red); }
.sensor-label {
  font-size: 9px; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-top: 2px;
}
.node-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 9px; color: var(--text-dim);
}

/* ═══ Nav Tabs ═══ */
.nav-tabs { display: flex; gap: 4px; margin-left: 20px; }
.nav-btn {
  background: none; border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-dim); font-family: var(--font-body); font-size: 12px;
  padding: 5px 14px; cursor: pointer; transition: all 0.2s;
}
.nav-btn:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-btn.active {
  background: rgba(0,229,255,0.12); border-color: var(--cyan); color: var(--cyan);
}

/* ═══ Firmware Table ═══ */
.fw-table-wrap { overflow-x: auto; padding: 0 4px; }
.fw-table {
  width: 100%; border-collapse: collapse;
  font-size: 13px; font-family: var(--font-body);
}
.fw-table thead { background: rgba(0,229,255,0.06); }
.fw-table th {
  text-align: left; padding: 10px 14px;
  font-family: var(--font-display); font-size: 10px;
  color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px;
  border-bottom: 1px solid var(--border);
}
.fw-table td {
  padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: middle;
}
.fw-table tr:hover { background: rgba(0,229,255,0.03); }
.fw-table code {
  font-family: var(--font-mono); font-size: 12px;
  padding: 2px 6px; border-radius: 4px;
  background: rgba(0,0,0,0.3);
}
.fw-current { color: var(--green); }
.fw-outdated { color: var(--amber); }
.fw-unknown { color: var(--text-dim); }

.type-badge {
  font-size: 9px; font-weight: 600; text-transform: uppercase;
  padding: 2px 8px; border-radius: 4px; letter-spacing: 0.5px;
}
.type-badge.hub { background: rgba(0,229,255,0.15); color: var(--cyan); }
.type-badge.node { background: rgba(255,179,0,0.12); color: var(--amber); }

.fw-badge { font-family: var(--font-mono); font-size: 10px; }
.fw-badge code { font-size: 10px; background: rgba(0,0,0,0.3); padding: 1px 4px; border-radius: 3px; }
.fw-badge.updatable { color: var(--amber); }

.ota-btn {
  background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(171,71,188,0.15));
  border: 1px solid var(--cyan); border-radius: 6px;
  color: var(--cyan); font-family: var(--font-display); font-size: 10px;
  padding: 5px 12px; cursor: pointer; transition: all 0.2s;
  white-space: nowrap;
}
.ota-btn:hover { background: rgba(0,229,255,0.25); box-shadow: 0 0 12px rgba(0,229,255,0.2); }
.ota-btn.ota-all {
  margin-left: auto; background: rgba(255,179,0,0.15);
  border-color: var(--amber); color: var(--amber);
}
.ota-btn.ota-all:hover { background: rgba(255,179,0,0.25); }

/* ═══ Notes ═══ */
.node-top-right { display: flex; align-items: center; gap: 8px; }
.notes-icon {
  background: none; border: none; cursor: pointer;
  font-size: 14px; opacity: 0.4; transition: opacity 0.2s;
  position: relative; padding: 2px;
}
.notes-icon:hover { opacity: 0.8; }
.notes-icon.has-notes { opacity: 0.7; }
.notes-count {
  position: absolute; top: -4px; right: -6px;
  background: var(--purple); color: white;
  font-size: 8px; font-weight: 700;
  width: 14px; height: 14px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
}
.notes-panel {
  border-top: 1px solid var(--border);
  margin: 8px -16px 0;
  padding: 10px 16px;
  background: rgba(0,0,0,0.25);
}
.notes-list { max-height: 120px; overflow-y: auto; margin-bottom: 8px; }
.note-item {
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.note-item:last-child { border-bottom: none; }
.note-text { font-size: 12px; color: var(--text); line-height: 1.4; }
.note-meta { font-size: 9px; color: var(--text-dim); font-family: var(--font-mono); margin-top: 2px; }
.note-empty { font-size: 11px; color: var(--text-dim); text-align: center; padding: 8px 0; }
.notes-input { display: flex; gap: 6px; }
.notes-input input {
  flex: 1; background: var(--bg-deep); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 10px;
  color: white; font-family: var(--font-body); font-size: 11px;
  outline: none;
}
.notes-input input:focus { border-color: var(--purple); }
.notes-input button {
  background: rgba(171,71,188,0.2); border: 1px solid var(--purple);
  border-radius: 6px; color: var(--purple);
  width: 30px; cursor: pointer; font-size: 14px;
  transition: all 0.2s;
}
.notes-input button:hover { background: rgba(171,71,188,0.35); }

/* ═══ Hub Actions ═══ */
.hub-actions { display: flex; align-items: center; gap: 10px; }



/* ═══ Footer ═══ */
footer {
  display: flex; justify-content: space-between;
  padding: 12px 24px;
  border-top: 1px solid var(--border);
  font-size: 11px; color: var(--text-dim);
}

/* ═══ Responsive ═══ */
@media (max-width: 600px) {
  .nodes-grid { grid-template-columns: 1fr; }
  #fleet-summary { flex-direction: column; }
  header { flex-direction: column; gap: 12px; }
  .hub-meta { flex-wrap: wrap; }
  .hub-actions { flex-wrap: wrap; }
}