/* ==== VARIABLES ==== */
:root {
  /* Colors - Light Theme */
  --color-bg-primary: #f8f9fa;
  --color-bg-secondary: #e9ecef;
  --color-bg-tertiary: #dee2e6;
  --color-text-primary: #212529;
  --color-text-secondary: #495057;
  --color-text-muted: #6c757d;
  --color-accent: #7048e8;
  --color-accent-hover: #5a30c5;
  --color-success: #28a745;
  --color-warning: #fd7e14;
  --color-danger: #dc3545;
  --color-info: #17a2b8;
  
  /* Canvas Background */
  --color-canvas-bg: #343434;
  
  /* UI Element Colors */
  --color-input-bg: #ffffff;
  --color-input-border: #ced4da;
  --color-header-bg: rgba(255, 255, 255, 0.95);
  --color-sidebar-bg: rgba(255, 255, 255, 0.95);
  --color-selection-highlight: rgba(112, 72, 232, 0.4);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  
  /* Z-Index Layers */
  --z-canvas: 1;
  --z-ui: 10;
  --z-overlay: 100;
  --z-toast: 1000;
}

/* Dark Theme Variables */
.dark-theme {
  --color-bg-primary: #121212;
  --color-bg-secondary: #1e1e1e;
  --color-bg-tertiary: #2d2d2d;
  --color-text-primary: #e9ecef;
  --color-text-secondary: #ced4da;
  --color-text-muted: #adb5bd;
  --color-accent: #9775fa;
  --color-accent-hover: #845ef7;
  
  --color-input-bg: #2d2d2d;
  --color-input-border: #495057;
  --color-header-bg: rgba(30, 30, 30, 0.95);
  --color-sidebar-bg: rgba(30, 30, 30, 0.95);
}

/* ==== RESET & BASE STYLES ==== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-canvas-bg);
  overflow: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--space-sm);
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

small {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ==== LAYOUT ==== */
.app-container {
  display: grid;
  grid-template-areas:
    "header header"
    "main sidebar";
  grid-template-columns: 1fr 320px;
  grid-template-rows: auto 1fr;
  height: 100vh;
  overflow: hidden;
}

.app-header {
  grid-area: header;
  display: flex;
  align-items: center;
  padding: var(--space-md);
  background-color: var(--color-header-bg);
  box-shadow: var(--shadow-md);
  z-index: var(--z-ui);
}

.logo-container {
  display: flex;
  align-items: center;
  margin-right: var(--space-md);
}

.logo {
  height: 40px;
  width: auto;
}

.header-controls {
  display: flex;
  gap: var(--space-sm);
  margin-left: auto;
}

.main-content {
  grid-area: main;
  position: relative;
  overflow: hidden;
}

.canvas-container {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: var(--z-canvas);
}

.sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  height: 100%;
  background-color: var(--color-sidebar-bg);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-ui);
  overflow: hidden;
}

/* Primary Navigation */
.primary-nav {
  display: flex;
  width: 100%;
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-input-border);
}

.primary-nav .nav-btn {
  flex: 1;
  padding: var(--space-md);
  border: none;
  background: none;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.primary-nav .nav-btn:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.primary-nav .nav-btn.active {
  color: var(--color-accent);
  border-bottom: 3px solid var(--color-accent);
  background-color: var(--color-bg-primary);
}

.primary-nav .nav-btn i {
  margin-right: var(--space-xs);
  font-size: 1rem;
}

/* Secondary Navigation */
.secondary-nav {
  display: flex;
  overflow-x: auto;
  background-color: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-input-border);
}

.secondary-nav .nav-btn {
  padding: var(--space-sm) var(--space-md);
  border: none;
  background: none;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

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

.secondary-nav .nav-btn.active {
  color: var(--color-accent);
  position: relative;
}

.secondary-nav .nav-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
}

.secondary-nav .nav-btn i {
  margin-right: var(--space-xs);
}

/* Panels and Sections */
.panels-container {
  flex: 1;
  overflow-y: auto;
}

.panel {
  display: none;
  padding: var(--space-sm);
}

.panel.active {
  display: block;
}

.section {
  display: none;
}

.section.active {
  display: block;
}

/* Accordion */
.accordion-section {
  margin-bottom: var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-input-border);
  overflow: hidden;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-bg-secondary);
  cursor: pointer;
}

.accordion-header h3 {
  margin: 0;
  font-size: 1rem;
  display: flex;
  align-items: center;
}

.accordion-header h3 i {
  margin-right: var(--space-sm);
  font-size: 0.9rem;
}

.accordion-toggle {
  background: none;
  border: none;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.accordion-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

.accordion-content {
  display: none;
  padding: var(--space-md);
  background-color: var(--color-bg-primary);
}

.accordion-section.expanded .accordion-content {
  display: block;
}

/* ==== COMPONENTS ==== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
  background-color: var(--color-bg-secondary);
  box-shadow: var(--shadow-sm);
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn i {
  margin-right: var(--space-xs);
}

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

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

.btn-icon {
  padding: var(--space-sm);
  border-radius: var(--radius-full);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
}

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

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* Round buttons for quick actions */
.btn-round {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  border: none;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.btn-round:hover {
  background-color: var(--color-bg-secondary);
  transform: scale(1.05);
}

.btn-round:active {
  transform: scale(0.95);
}

/* Quick Actions Container */
.quick-actions {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  z-index: var(--z-ui);
}

/* Preset buttons */
.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.preset-buttons .btn {
  flex: 1 0 calc(33% - var(--space-sm));
  padding: var(--space-md);
  text-align: center;
  border: 1px solid var(--color-input-border);
}

/* Form Controls */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(112, 72, 232, 0.25);
}

/* Panel Header with Close Button */
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.selection-actions {
  display: flex;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

/* Custom Toggle Switches */
.toggle-container {
  display: flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.toggle-container input {
  position: absolute;
  opacity: 0;
  height: 0;
  width: 0;
}

.toggle-slider {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  margin-right: var(--space-sm);
  transition: background-color var(--transition-fast);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

input:checked + .toggle-slider {
  background-color: var(--color-accent);
}

input:checked + .toggle-slider:before {
  transform: translateX(16px);
}

/* Checkboxes */
.checkbox-container {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-xs);
  cursor: pointer;
}

.checkbox-container input {
  margin-right: var(--space-xs);
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-xs);
}

/* Color Picker */
.color-picker-container {
  position: relative;
}

.color-picker {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 100%;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-picker::-webkit-color-swatch {
  border: none;
  border-radius: var(--radius-md);
}

/* Range Slider */
.form-range {
  width: 100%;
  height: 10px;
  padding: 0;
  background-color: transparent;
  -webkit-appearance: none;
  appearance: none;
}

.form-range:focus {
  outline: none;
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  margin-top: -5px;
}

.form-range::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: none;
}

.form-range::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  cursor: pointer;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
}

.form-range::-moz-range-track {
  width: 100%;
  height: 6px;
  cursor: pointer;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
}

/* Input with Button */
.input-with-button {
  display: flex;
}

.input-with-button .form-control {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  flex: 1;
}

.input-with-button .btn {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* Grid and Axis Toggle Groups */
.axis-toggle-group,
.grid-toggle-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

/* Status Containers */
.status-container {
  margin-top: var(--space-md);
  padding: var(--space-sm);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.status-container div {
  margin-bottom: var(--space-xs);
}

/* Info Displays */
.hover-info {
  display: none;
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-ui);
  max-width: 400px;
}

.selected-info {
  display: none;
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-ui);
  max-width: 400px;
  max-height: 60vh;
  overflow-y: auto;
}

/* Recording Status */
.recording-status {
  display: none;
  position: absolute;
  top: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-danger);
  color: white;
  border-radius: var(--radius-md);
  font-weight: 500;
  z-index: var(--z-ui);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { opacity: 1; }
  50% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  z-index: var(--z-toast);
}

.toast {
  padding: var(--space-md);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: toast-in 0.3s ease, toast-out 0.3s ease 2.7s forwards;
  max-width: 300px;
}

.toast-success {
  border-left: 4px solid var(--color-success);
}

.toast-warning {
  border-left: 4px solid var(--color-warning);
}

.toast-error {
  border-left: 4px solid var(--color-danger);
}

.toast-info {
  border-left: 4px solid var(--color-info);
}

@keyframes toast-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes toast-out {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(100%); opacity: 0; }
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

th, td {
  padding: var(--space-sm);
  text-align: left;
  border: 1px solid var(--color-input-border);
}

th {
  background-color: var(--color-bg-secondary);
  font-weight: 600;
}

/* ==== RESPONSIVE ADJUSTMENTS ==== */
@media (max-width: 900px) {
  .app-container {
      grid-template-areas:
          "header"
          "main"
          "sidebar";
      grid-template-columns: 1fr;
      grid-template-rows: auto 1fr auto;
  }
  
  .sidebar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 300px;
      border-top-left-radius: var(--radius-lg);
      border-top-right-radius: var(--radius-lg);
      box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.1);
  }
  
  .primary-nav {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
  }
  
  .header-controls {
      flex-wrap: wrap;
  }
  
  .btn {
      font-size: 0.75rem;
      padding: var(--space-xs) var(--space-sm);
  }
  
  h1 { font-size: 1.25rem; }
  h2 { font-size: 1.125rem; }
  
  .quick-actions {
      flex-direction: row;
  }
}

/* For very small screens */
@media (max-width: 480px) {
  .app-header {
      flex-direction: column;
      align-items: flex-start;
  }
  
  .logo-container {
      margin-bottom: var(--space-sm);
  }
  
  .header-controls {
      width: 100%;
      justify-content: center;
      margin-top: var(--space-sm);
  }

  .primary-nav .nav-btn {
      padding: var(--space-sm);
  }

  .primary-nav .nav-btn i {
      margin-right: 0;
  }

  .primary-nav .nav-btn span {
      display: none;
  }
}