:root {
  --bg-body: #f0f2f5;
  --text-primary: #1a1a2e;
  --surface-card: #ffffff;
  --text-muted: #6b7280;
  --nav-bg: #1e293b;
  --nav-text: #94a3b8;
  --nav-text-hover: #e2e8f0;
  --nav-text-active: #ffffff;
  --accent-primary: #2563eb;
  --accent-primary-hover: #1d4ed8;
  --accent-secondary: #3b82f6;
  --accent-success: #0f766e;
  --accent-success-hover: #0d5f59;
  --accent-danger: #dc2626;
  --accent-danger-hover: #b91c1c;
  --control-border: #cbd5e1;
  --surface-control: #ffffff;
  --badge-bg: #e5e7eb;
  --badge-text: #6b7280;
  --badge-dot: #9ca3af;
  --badge-connected-bg: #dcfce7;
  --badge-connected-text: #166534;
  --badge-connected-dot: #16a34a;
  --badge-error-bg: #fee2e2;
  --badge-error-text: #991b1b;
  --badge-error-dot: #dc2626;
  --drop-border: #93c5fd;
  --drop-bg: #f8fbff;
  --drop-text: #475569;
  --drop-hover-border: #2563eb;
  --drop-hover-bg: #eff6ff;
  --drop-hover-text: #1d4ed8;
  --stat-text: #2563eb;
  --stat-label-text: #9ca3af;
  --log-bg: #f8fafc;
  --log-border: #e2e8f0;
  --log-error-bg: #fff5f5;
  --log-error-border: #fecaca;
  --panel-border: #e2e8f0;
  --panel-bg: #f8fafc;
  --panel-text: #334155;
  --sidebar-bg: #111111;
  --sidebar-link: #818181;
  --sidebar-link-hover: #f1f1f1;
  --sidebar-text: #e5e7eb;
  --sidebar-heading: #9ca3af;
  --sidebar-drop-border: #374151;
  --sidebar-drop-bg: #0f172a;
  --sidebar-drop-text: #cbd5e1;
  --sidebar-drop-hover-border: #60a5fa;
  --sidebar-drop-hover-bg: #172554;
  --sidebar-drop-hover-text: #dbeafe;
  --neon-primary: #00c98a;
  --neon-primary-dark: #009f6d;
  --neon-primary-light: #ecfff7;
  --neon-surface: rgba(15, 23, 42, 0.9);
  --neon-surface-strong: rgba(2, 6, 23, 0.95);
}

[data-theme="dark"] {
  --bg-body: #272933;
  --text-primary: #e2e8f0;
  --surface-card: #111827;
  --text-muted: #94a3b8;
  --nav-bg: #0f172a;
  --nav-text: #94a3b8;
  --nav-text-hover: #f8fafc;
  --nav-text-active: #ffffff;
  --accent-primary: #3b82f6;
  --accent-primary-hover: #60a5fa;
  --accent-secondary: #60a5fa;
  --accent-success: #10b981;
  --accent-success-hover: #059669;
  --accent-danger: #ef4444;
  --accent-danger-hover: #dc2626;
  --control-border: #334155;
  --surface-control: #0f172a;
  --badge-bg: #1f2937;
  --badge-text: #cbd5e1;
  --badge-dot: #94a3b8;
  --badge-connected-bg: #052e16;
  --badge-connected-text: #86efac;
  --badge-connected-dot: #22c55e;
  --badge-error-bg: #450a0a;
  --badge-error-text: #fca5a5;
  --badge-error-dot: #f87171;
  --drop-border: #1d4ed8;
  --drop-bg: #0f172a;
  --drop-text: #cbd5e1;
  --drop-hover-border: #60a5fa;
  --drop-hover-bg: #172554;
  --drop-hover-text: #dbeafe;
  --stat-text: #60a5fa;
  --stat-label-text: #94a3b8;
  --log-bg: #0f172a;
  --log-border: #334155;
  --log-error-bg: #3f0d0d;
  --log-error-border: #7f1d1d;
  --panel-border: #334155;
  --panel-bg: #0f172a;
  --panel-text: #cbd5e1;
  --sidebar-bg: #020617;
  --sidebar-link: #94a3b8;
  --sidebar-link-hover: #f8fafc;
  --sidebar-text: #e2e8f0;
  --sidebar-heading: #94a3b8;
  --sidebar-drop-border: #334155;
  --sidebar-drop-bg: #0f172a;
  --sidebar-drop-text: #cbd5e1;
  --sidebar-drop-hover-border: #60a5fa;
  --sidebar-drop-hover-bg: #172554;
  --sidebar-drop-hover-text: #dbeafe;
  --neon-primary: #00ffaa;
  --neon-primary-dark: #00cc88;
  --neon-primary-light: #ecfff7;
  --neon-surface: rgba(0, 0, 0, 0.8);
  --neon-surface-strong: rgba(2, 6, 23, 0.92);
}

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

body {
  font-family: system-ui, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  padding: 24px;
  padding-top: 68px;
}

.tab-switcher {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  align-items: center;
  display: flex;
  background: var(--nav-bg);
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.tab-btn {
  padding: 14px 28px;
  border: none;
  background: transparent;
  color: var(--nav-text);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover {
  color: var(--nav-text-hover);
}

.tab-btn.active {
  color: var(--nav-text-active);
  border-bottom-color: var(--accent-secondary);
}

h1 { font-size: 1.4rem; font-weight: 600; margin-bottom: 20px; }

.charts-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.charts-header h1 {
  margin-bottom: 0;
}

.charts-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

button {
  padding: 8px 20px;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

button:disabled { opacity: 0.45; cursor: default; }

#connectBtn { background: #2563eb; color: #fff; }
#connectBtn { background: var(--accent-primary); color: var(--nav-text-active); }
#connectBtn:hover:not(:disabled) { background: var(--accent-primary-hover); }

#disconnectBtn { background: var(--accent-danger); color: var(--nav-text-active); }
#disconnectBtn:hover:not(:disabled) { background: var(--accent-danger-hover); }

#fileBtn { background: var(--accent-success); color: var(--nav-text-active); }
#fileBtn:hover:not(:disabled) { background: var(--accent-success-hover); }

select {
  padding: 8px 12px;
  border: 1px solid var(--control-border);
  border-radius: 6px;
  background: var(--surface-control);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--badge-bg);
  color: var(--badge-text);
  transition: background 0.2s, color 0.2s;
}

.status-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--badge-dot);
  transition: background 0.2s;
}

.status-badge.connected { background: var(--badge-connected-bg); color: var(--badge-connected-text); }
.status-badge.connected .dot { background: var(--badge-connected-dot); }
.status-badge.error { background: var(--badge-error-bg); color: var(--badge-error-text); }
.status-badge.error .dot { background: var(--badge-error-dot); }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 700px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface-card);
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.card h2 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.card.full { grid-column: 1 / -1; }

.drop-zone {
  border: 2px dashed var(--drop-border);
  border-radius: 10px;
  padding: 18px;
  text-align: center;
  color: var(--drop-text);
  background: var(--drop-bg);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.drop-zone.dragover {
  border-color: var(--drop-hover-border);
  background: var(--drop-hover-bg);
  color: var(--drop-hover-text);
}

.stat { font-size: 1.6rem; font-weight: 700; color: var(--stat-text); }
.stat-label { font-size: 0.78rem; color: var(--stat-label-text); margin-top: 2px; }

pre.log {
  background: var(--log-bg);
  border: 1px solid var(--log-border);
  border-radius: 6px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.4;
  min-height: 120px;
  max-height: 200px;
  overflow-y: auto;
  overflow-x: auto;
  white-space: pre; /* preserve whitespace and allow horizontal scrolling */
  word-break: normal;
  overflow-wrap: normal;
  -webkit-overflow-scrolling: touch; /* smooth scrolling on iOS */
}

pre.log.error-log { background: var(--log-error-bg); border-color: var(--log-error-border); }

#chart {
  width: 100%;
  min-height: 800px;
}

#chart3d {
  width: 100%;
  min-height: 520px;
}

.subplot-controls {
  margin-bottom: 10px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  background: var(--panel-bg);
  padding: 8px 10px;
}

.subplot-controls summary {
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--panel-text);
  user-select: none;
}

.subplot-toggle-list {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 6px 12px;
}

.subplot-toggle-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--panel-text);
}

.subplot-toggle-item input {
  width: 14px;
  height: 14px;
}

.sidenav {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  background-color: var(--sidebar-bg);
  overflow: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

#sidebarHoverZone::after {
  content:  "\2630";
  position: fixed;
  bottom: 16px;
  left: 0px;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  font-size: 13px;
  background: var(--sidebar-drop-bg);
  color: var(--sidebar-drop-hover-text);
  border: 1px solid var(--sidebar-drop-border);
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
  pointer-events: none;
}

.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 25px;
  color: var(--sidebar-link);
  display: block;
  transition: 0.3s;
}

.sidenav a:hover {
  color: var(--sidebar-link-hover);
}

.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}

.sidebar-content {
  padding: 0 16px 16px 16px;
  color: var(--sidebar-text);
}

.sidebar-content h2 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--sidebar-heading);
  margin: 10px 0;
}

.sidebar-toolbar {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  margin-bottom: 18px;
}

.sidebar-toolbar .status-badge {
  width: fit-content;
}

.sidenav .drop-zone {
  border-color: var(--sidebar-drop-border);
  background: var(--sidebar-drop-bg);
  color: var(--sidebar-drop-text);
}

.sidenav .drop-zone.dragover {
  border-color: var(--sidebar-drop-hover-border);
  background: var(--sidebar-drop-hover-bg);
  color: var(--sidebar-drop-hover-text);
}

#sidebarHoverZone {
  position: fixed;
  top: 0;
  left: 0;
  width: 10px;
  height: 100vh;
  z-index: 9998;
  background: transparent;
}

@media screen and (max-height: 450px) {
  .sidenav {padding-top: 15px;}
  .sidenav a {font-size: 18px;}
}

.navbar-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 20px;
  cursor: pointer;  /* zmień kursor na pointer */
}

.navbar-logo a {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  border-radius: 4px;           /* zaokrąglenie rogów */
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));  /* cień */
  transition: transform 0.2s;   /* animacja */
}

.logo-img:hover {
  transform: scale(1.05);       /* powiększenie przy hover */
}

.settings-section + .settings-section {
  margin-top: 40px;
}

.settings-option-row {
  grid-template-columns: 80px 240px;
  align-items: center;
  column-gap: 10px;
}

.settings-section .settings-option-row + .settings-option-row {
  margin-top: 12px;
}

/* Connection rows are wrapped in #serialOptions / #wsOptions containers,
   so add spacing between those blocks explicitly. */
.settings-section > #serialOptions,
.settings-section > #wsOptions {
  margin-top: 12px;
}

.settings-section > #serialOptions + .settings-option-row,
.settings-section > #wsOptions + .settings-option-row {
  margin-top: 12px;
}

.settings-input-row .neon-input {
  width: 100%;
  max-width: 80px;
  justify-self: start;
}

.settings-dropdown-row {
  grid-template-columns: minmax(180px, 320px) 80px;
}

.settings-dropdown-row .neon-dropdown-field {
  min-width: 0;
  width: 100%;
  max-width: 320px;
}

.settings-input-row--wide {
  grid-template-columns: minmax(120px, 140px) 120px;
}

.settings-input-row--wide .neon-input {
  width: 100%;
  max-width: none;
  min-width: 120px;
  text-align: left;
}

.parameters-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.parameters-title {
  margin-bottom: 0;
}

.parameters-actions {
  margin-left: auto;
}

.parameters-list {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.parameters-list .neon-dropdown-wrapper,
.parameters-list .neon-checkbox-wrapper,
.parameters-list .neon-input-wrapper,
.parameters-list .neon-button-wrapper {
  display: grid;
  grid-template-columns: var(--param-label-col, 180px) minmax(var(--param-input-min, 220px), var(--param-input-max, 360px));
  align-items: center;
  column-gap: 10px;
}

.parameters-section.parameters-section--medium {
  --param-label-col: 240px;
  --param-input-max: 420px;
}

.parameters-section.parameters-section--wide {
  --param-label-col: 280px;
  --param-input-max: 460px;
}
/* Collapsible parameters sections */
.parameters-section {
  width: 100%;
  border: 1px solid var(--control-border);
  border-radius: 8px;
  background: var(--surface-control);
  overflow: hidden;
  transition: border-color 0.2s;
}

.parameters-section:hover {
  border-color: var(--accent-primary);
}

.parameters-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  user-select: none;
  transition: background-color 0.15s;
}

.parameters-header:hover {
  background-color: var(--panel-bg);
}

.parameters-section details > summary::marker {
  color: var(--accent-primary);
}

.parameters-section[open] > .parameters-header {
  background-color: var(--panel-bg);
}

.parameters-list {
  padding: 12px 16px;
  background: var(--surface-control);
  max-height: none;
  transition: max-height 0.3s ease-out;
  overflow: hidden;
}

.bindings-split {
  display: grid;
  grid-template-columns: var(--bindings-left, 1fr) 1fr;
  gap: 12px;
  width: 100%;
  align-self: stretch;
}

.bindings-split > .card {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.bindings-split > .card h2 {
  margin-bottom: 0;
}

.bindings-split .neon-dropdown-wrapper,
.bindings-split .neon-checkbox-wrapper,
.bindings-split .neon-input-wrapper {
  width: 100%;
}

.binding-params-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.binding-params-group[hidden] {
  display: none !important;
}

.binding-params-group .neon-dropdown-wrapper,
.binding-params-group .neon-checkbox-wrapper,
.binding-params-group .neon-input-wrapper,
.binding-params-group .neon-button-wrapper {
  width: 100%;
}

#myDiv {
  width: 100%;
  min-height: 360px;
}

@media (max-width: 900px) {
  .bindings-split {
    grid-template-columns: 1fr;
  }

  .parameters-topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .parameters-actions {
    margin-left: 0;
  }
}