/* ============================================================
   SmartKea Admin Dashboard — Premium Dark Theme
   ============================================================ */

:root {
  /* Color Palette */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2233;
  --bg-card-hover: #1f2b3f;
  --bg-sidebar: #0d1320;
  --bg-input: #151d2e;

  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.25);
  --accent-hover: #60a5fa;
  --accent-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);

  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border: #1e293b;
  --border-light: #334155;

  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;

  /* Dimensions */
  --sidebar-width: 260px;
  --topbar-height: 64px;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

body {
  display: flex;
  overflow: hidden;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  padding: 24px 20px 16px;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  font-size: 28px;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.logo-sub {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 4px;
  padding-left: 40px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.nav-item:hover {
  background: rgba(59, 130, 246, 0.08);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent-hover);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--accent);
}

.nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
}

.btn-refresh {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-refresh:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--accent);
  color: var(--accent-hover);
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.top-bar {
  height: var(--topbar-height);
  min-height: var(--topbar-height);
  display: flex;
  align-items: center;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.top-bar h1 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.top-bar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.3s;
}

.status-dot.online {
  background: var(--success);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 4px rgba(34, 197, 94, 0.3); }
  50% { box-shadow: 0 0 12px rgba(34, 197, 94, 0.6); }
}

.timestamp {
  font-size: 12px;
  color: var(--text-muted);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  margin-right: 16px;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  display: none;
  padding: 28px 32px;
  flex: 1;
  animation: fadeIn 0.3s ease;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   STATUS CARDS (Overview)
   ============================================================ */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.status-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.status-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.status-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.status-card:hover::before { opacity: 1; }

.status-card .card-icon {
  font-size: 26px;
}

.status-card .card-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.status-card .card-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
}

.status-card .card-status {
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 20px;
  width: fit-content;
}

.card-status.online {
  background: rgba(34, 197, 94, 0.12);
  color: var(--success);
}

.card-status.offline {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
}

/* ============================================================
   PANELS
   ============================================================ */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.panel.compact { padding: 20px; }

.panel-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}

tbody tr {
  transition: background 0.15s;
}

tbody tr:hover {
  background: rgba(59, 130, 246, 0.04);
}

tbody tr:last-child td { border-bottom: none; }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.badge-success { background: rgba(34, 197, 94, 0.12); color: var(--success); }
.badge-warning { background: rgba(245, 158, 11, 0.12); color: var(--warning); }
.badge-danger  { background: rgba(239, 68, 68, 0.12); color: var(--danger); }
.badge-info    { background: rgba(6, 182, 212, 0.12); color: var(--info); }
.badge-muted   { background: rgba(100, 116, 139, 0.12); color: var(--text-muted); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  padding: 6px 14px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--accent);
  color: var(--accent-hover);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

.btn-group {
  display: flex;
  gap: 6px;
}

/* ============================================================
   INLINE SELECT
   ============================================================ */
.inline-select {
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 12px;
  padding: 4px 8px;
  font-family: inherit;
  margin-left: 8px;
  cursor: pointer;
}

/* ============================================================
   INFO GRID
   ============================================================ */
.info-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  font-size: 13px;
}

.info-grid .label {
  color: var(--text-muted);
  font-weight: 500;
}

.info-grid .value {
  color: var(--text-primary);
  font-weight: 600;
}

/* ============================================================
   CARD LIST (Realms)
   ============================================================ */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.realm-card {
  padding: 14px 18px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color 0.2s;
}

.realm-card:hover { border-color: var(--accent); }

.realm-card .realm-name {
  font-weight: 600;
  font-size: 14px;
}

.realm-card .realm-display {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================================
   NODES GRID
   ============================================================ */
.nodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.node-card {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: all 0.25s;
}

.node-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.node-card .node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.node-card .node-hostname {
  font-size: 16px;
  font-weight: 700;
}

.node-card .node-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 12px;
}

.node-card .node-detail-label {
  color: var(--text-muted);
}

.node-card .node-detail-value {
  color: var(--text-primary);
  font-weight: 500;
  text-align: right;
}

/* ============================================================
   SUB GRID
   ============================================================ */
.sub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 14px 22px;
  font-size: 13px;
  color: var(--text-primary);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 200;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ============================================================
   LOADING
   ============================================================ */
.loading-row td {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-light);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
  }
  .main-content {
    margin-left: 0;
  }
  .hamburger {
    display: block;
  }
  .section {
    padding: 20px 16px;
  }
  .top-bar {
    padding: 0 16px;
  }
  .status-grid {
    grid-template-columns: 1fr 1fr;
  }
  .sub-grid {
    grid-template-columns: 1fr;
  }
  .nodes-grid {
    grid-template-columns: 1fr;
  }
}