:root {
  --spacing: 1rem;
  --aside-width: 15rem;
  --max-content-width: 60rem;
  --primary-color: #667eea;
  --background-color: #667eea1a;
  --black: #000;
  --white: #FFF;
  --gray-50: #fafafa;
  --gray-100: #f8f9fa;
  --gray-200: rgba(248, 245, 245, 1);
  --gray-300: rgba(192, 192, 192, 1);
  --gray-400: #ced4da;
  --gray-500: rgba(147, 147, 147, 1);
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
  --primary-color-hover: #764ba2;
  --primary-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color-hover) 100%);
  --secondary-color: rgba(56, 200, 104, 1);
  --background-color: #F2F4F7;
  --text-color-button: #939393;
  --border-color: rgba(226, 226, 226, 1);
  --border-gray: 1px solid rgba(208, 207, 207, 1);
  --border-radius: 0.3rem;
  --border-radius-lg: 25px;
  --border-radius-md: 12px;
  --box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  --box-shadow-hover: 0 12px 35px rgba(102, 126, 234, 0.4);
  --transition: all 0.3s ease;
  --border-button: 1px solid rgba(208, 207, 207, 1);
  --border-dotted: 1px dotted #93939380;
  --controls-gap: 8px;
  --bg-active: #E7F0FF;
  --border-active: 1px solid #8db7ff;
  --track-height: 3px;
  --handle-size: 20px;
  --playhead-size: 20px;
  --timeline-segment-color: #C0C0C0;
}

* {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  touch-action: manipulation;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Roboto', sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--black);
  background-color: var(--background-color);
}

.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
  z-index: 10000;
  font-weight: 600;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.notification.show {
  transform: translateX(0);
}

.notification.hide {
  transform: translateX(100%);
}

.close-icon {
  padding: 0.125rem;
  border-radius: 50%;
  border: 1px dashed #8d8d8d !important;
}