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

:root {
  --bg-dark: #080b12;
  --bg-card: #111827;
  --bg-sidebar: #0d1117;
  --bg-input: #1e2535;
  --border: #2d3650;
  --text-primary: #f0f4ff;
  --text-secondary: #a8b3d4;
  --text-muted: #6b7599;
  --accent: #818cf8;
  --accent-hover: #a5b4fc;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --info: #60a5fa;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 18px;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

.app {
  display: flex;
  min-height: 100vh;
}

/* Sidebar toggle button */
.sidebar-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.sidebar-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar.collapsed {
  transform: translateX(-240px);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  color: var(--text-primary);
}

.logo-icon {
  font-size: 24px;
  color: var(--accent);
}

.nav-menu {
  list-style: none;
  padding: 12px 0;
}

.nav-item {
  padding: 12px 20px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s;
  font-size: 14px;
}

.nav-item:hover {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.08);
}

.nav-item.active {
  color: var(--accent);
  background: rgba(99, 102, 241, 0.12);
  border-right: 3px solid var(--accent);
}

/* Content */
.content {
  flex: 1;
  margin-left: 240px;
  padding: 30px 34px 40px;
  min-width: 0;
  transition: margin-left 0.3s ease;
}

.sidebar.collapsed ~ .content {
  margin-left: 0;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.view-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.view-header h1 {
  flex: 1;
}

h1 {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--border);
}

h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

/* Section header with toggle */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid #1e2840;
  gap: 16px;
  flex-wrap: wrap;
}

.section-header h2 {
  margin-bottom: 0;
}

.view-toggle {
  display: flex;
  gap: 2px;
  background: var(--bg-input);
  border-radius: 8px;
  padding: 2px;
  border: 1px solid var(--border);
}

.view-toggle-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: all 0.2s;
}

.view-toggle-btn:hover {
  color: var(--text-primary);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.search-input {
  padding: 7px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  width: 200px;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.filter-select {
  padding: 7px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
}

.filter-select:focus {
  outline: none;
  border-color: var(--accent);
}

.view-toggle-btn.active {
  background: var(--accent);
  color: white;
}

/* Overview Header */
.overview-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid #1e2840;
  flex-wrap: wrap;
}

.overview-subtitle {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  white-space: nowrap;
  border-left: 2px solid #1e2840;
  padding-left: 16px;
}

/* Hero Stat Card */
.stat-card-hero {
  background: linear-gradient(135deg, #0d1117, #111827);
  border: 1px solid rgba(0, 215, 243, 0.15);
  border-radius: 16px;
  padding: 16px 28px;
  box-shadow: 0 0 20px rgba(0, 215, 243, 0.06), 0 4px 24px rgba(0,0,0,0.4);
  min-width: 240px;
  flex-shrink: 0;
}

.stat-card-hero-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-align: center;
}

.stat-card-hero-values {
  display: flex;
  align-items: center;
  gap: 18px;
}

.stat-hero-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.stat-hero-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  position: relative;
  top: -2px;
}

.stat-hero-dot.active-dot {
  background: #00d7f3;
  box-shadow: 0 0 8px rgba(0, 215, 243, 0.6);
  animation: dotPulse 2s ease-in-out infinite;
}

.stat-hero-dot.error-dot {
  background: #ff2244;
  box-shadow: 0 0 8px rgba(255, 34, 68, 0.6);
  animation: dotPulse 2s ease-in-out infinite 0.5s;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.stat-hero-number {
  font-size: 32px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -1px;
}

.stat-hero-active .stat-hero-number { color: #00d7f3; }
.stat-hero-error .stat-hero-number { color: #ff2244; }

.stat-hero-sub {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.stat-hero-divider {
  width: 1px;
  height: 32px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.1), transparent);
}

/* Machines Grid (Overview) */
.machines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.machine-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.machine-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.machine-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

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

.machine-card-hostname {
  font-size: 12px;
  color: var(--text-secondary);
}

.machine-card-client {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.machine-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  font-size: 12px;
}

.machine-card-body .label {
  color: var(--text-muted);
}

.machine-card-body .value {
  text-align: right;
}

/* Heatmap Grid */
.heatmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  gap: 10px;
}

.heatmap-tile {
  position: relative;
  border-radius: 10px;
  padding: 14px;
  cursor: pointer;
  transition: all 0.15s;
  min-height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.heatmap-tile:hover {
  transform: translateY(-2px) scale(1.02);
  filter: brightness(1.2);
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
}

.heatmap-tile.status-online {
  background: rgba(34, 197, 94, 0.13);
  border: 1.5px solid rgba(34, 197, 94, 0.35);
}

.heatmap-tile.status-error {
  background: rgba(239, 68, 68, 0.2);
  border: 1.5px solid rgba(239, 68, 68, 0.5);
}

.heatmap-tile.status-offline {
  background: rgba(75, 85, 120, 0.15);
  border: 1.5px solid rgba(75, 85, 120, 0.35);
}

.heatmap-tile-name {
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-right: 26px;
  color: var(--text-primary);
}

.heatmap-tile.status-error .heatmap-tile-name { color: #fca5a5; }
.heatmap-tile.status-offline .heatmap-tile-name { color: #9ca3af; }

.heatmap-tile-time {
  font-size: 12px;
  font-weight: 500;
  color: #8ba0c4;
  margin-top: 2px;
}

.heatmap-tile.status-online .heatmap-tile-time { color: #86efac; }
.heatmap-tile.status-error .heatmap-tile-time { color: #fca5a5; }
.heatmap-tile.status-offline .heatmap-tile-time { color: #6b7280; }

.heatmap-tile .refresh-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,0.05);
  border: none;
  color: var(--text-muted);
  width: 22px;
  height: 22px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0;
  line-height: 1;
}

.heatmap-tile .refresh-btn:hover {
  background: rgba(255,255,255,0.18);
  color: var(--text-primary);
}

.heatmap-tile .refresh-btn.spinning {
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Status badges */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.badge-primary { background: rgba(99, 102, 241, 0.15); color: var(--accent); }
.badge-secondary { background: rgba(139, 143, 163, 0.15); color: var(--text-secondary); }
.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--info); }

.status-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

.status-dot.online {
  background: var(--success);
  box-shadow: 0 0 6px rgba(52,211,153,0.7);
  animation: pulse-online 2.5s ease-in-out infinite;
}
.status-dot.offline { background: var(--text-muted); }
.status-dot.error {
  background: var(--danger);
  box-shadow: 0 0 6px rgba(248,113,113,0.7);
}

@keyframes pulse-online {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.data-table th {
  text-align: left;
  padding: 14px 16px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  background: #0f1520;
  border-bottom: 2px solid var(--border);
}

.data-table td {
  padding: 14px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--bg-input);
  color: #e0e6f8;
}

.data-table tbody tr:hover td {
  background: rgba(129, 140, 248, 0.05);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

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

/* Detail cards */
.machine-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-row .label {
  color: var(--text-muted);
  font-size: 13px;
}

.detail-row .value {
  font-size: 14px;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
}

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 480px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin-bottom: 0;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 24px;
  cursor: pointer;
}

.modal-body {
  padding: 24px;
}

/* Log type badges */
.log-start { color: var(--info); }
.log-success { color: var(--success); }
.log-error { color: var(--danger); }
.log-heartbeat { color: var(--text-muted); }

/* Clickable */
.clickable {
  cursor: pointer;
}

.clickable:hover {
  color: var(--accent);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
}

/* Filter bar */
.log-filters {
  display: flex;
  gap: 8px;
}

.log-filters select {
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
}

/* API key display */
.api-key-display {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  word-break: break-all;
  margin: 8px 0;
}

/* Alert */
.alert {
  padding: 12px 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  font-size: 14px;
}

.alert a {
  color: inherit;
  font-weight: 600;
}

.alert-danger {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
}

.alert-success {
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--success);
}

/* Subtitle */
.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 20px;
}

/* Form rows */
.form-row {
  display: flex;
  gap: 24px;
}

.form-group-check label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.form-group-check input[type="checkbox"] {
  width: auto;
  accent-color: var(--accent);
}

/* Login screen */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-dark);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 400px;
  max-width: 90vw;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header h1 {
  margin-bottom: 0;
  margin-top: 8px;
}

/* Sidebar footer */
.sidebar-footer {
  margin-top: auto;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.user-info {
  margin-bottom: 8px;
}

.user-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

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

/* Error detail in tables */
.error-detail {
  color: var(--danger);
  word-break: break-word;
  max-width: 400px;
  display: inline-block;
}

/* Clinic info grid */
.clinic-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

/* Rejt mode */
.heatmap-tile.rejt-hidden {
  opacity: 0.35;
  filter: grayscale(0.8);
}

.heatmap-tile .rejt-toggle {
  position: absolute;
  top: 8px;
  right: 32px;
  background: rgba(255,255,255,0.08);
  border: none;
  color: var(--text-muted);
  width: 22px;
  height: 22px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  padding: 0;
  line-height: 1;
}

.heatmap-tile .rejt-toggle:hover {
  background: rgba(255,255,255,0.18);
  color: var(--text-primary);
}

/* Acknowledged error tiles */
.heatmap-tile.status-acked {
  background: rgba(251, 191, 36, 0.12) !important;
  border-color: rgba(251, 191, 36, 0.4) !important;
  opacity: 0.75;
}

.heatmap-tile.status-acked .heatmap-tile-name {
  color: var(--warning);
}

.heatmap-tile.status-acked .heatmap-tile-time {
  color: rgba(251, 191, 36, 0.7);
}

/* Contact phone on error tiles */
.heatmap-tile-phone {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-size: 12px;
  font-weight: 600;
}

.heatmap-tile-phone a {
  color: #fca5a5;
  text-decoration: none;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.heatmap-tile-phone a:hover { text-decoration: underline; }

.heatmap-tile-phone .copy-btn {
  flex: 0 0 auto;
  background: rgba(255,255,255,0.08);
  border: none;
  color: var(--text-muted);
  width: 20px;
  height: 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.heatmap-tile-phone .copy-btn:hover {
  background: rgba(255,255,255,0.18);
  color: var(--text-primary);
}

.heatmap-tile.status-acked .heatmap-tile-phone { padding-right: 90px; }

/* Ack badge on tile */
.ack-badge {
  position: absolute;
  bottom: 6px;
  right: 8px;
  font-size: 10px;
  color: var(--warning);
  opacity: 0.8;
}

/* Ack section in detail view */
.ack-section {
  margin-top: 16px;
  padding: 16px;
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.25);
  border-radius: 10px;
}

.ack-section .ack-info {
  font-size: 14px;
  color: var(--warning);
  margin-bottom: 8px;
}

/* Machine card rejt mode */
.machine-card.rejt-hidden {
  opacity: 0.35;
  filter: grayscale(0.8);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Responsive */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-240px);
  }
  .content {
    margin-left: 0;
  }
  .overview-header {
    flex-direction: column;
    align-items: stretch;
  }
  .overview-subtitle {
    border-left: none;
    padding-left: 0;
  }
  .machine-detail-grid {
    grid-template-columns: 1fr;
  }
  .clinic-info-grid {
    grid-template-columns: 1fr;
  }
  .machines-grid {
    grid-template-columns: 1fr;
  }
  .heatmap-grid {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  }
}