/* Layout Styles - Header, Grid, and Sidebars */

/* Header Styles */
.header {
  position: sticky;
  top: 0;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-primary);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  transition: background-color var(--transition), border-color var(--transition);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header h1 {
  font-size: 1.25rem;
  font-weight: bold;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Main Layout */
.main-layout {
  display: grid;
  grid-template-columns: 250px 1fr 340px;
  gap: 2rem;
  max-width: 1600px;
  margin: 0 auto;
  padding: 2rem;
  min-height: calc(100vh - 60px);
}

/* Center Content */
.main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.timer-container {
  text-align: center;
  width: 100%;
  max-width: 600px;
}

/* Left Sidebar - Menu */
.left-sidebar {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  padding: 1.5rem;
  height: fit-content;
  position: sticky;
  top: 80px;
  transition: background-color var(--transition), border-color var(--transition);
}

.sidebar-title {
  font-size: 0.875rem;
  font-weight: bold;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.menu-section {
  margin-bottom: 2rem;
}

.menu-section:last-child {
  margin-bottom: 0;
}

.menu-label {
  font-size: 0.75rem;
  font-weight: bold;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.menu-item {
  display: block;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-primary);
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition);
  text-align: left;
  width: 100%;
}

.menu-item:hover {
  background-color: var(--bg-tertiary);
}

.menu-item.active {
  background-color: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
}

/* Right Sidebar - Settings */
.right-sidebar {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  padding: 1.5rem;
  height: fit-content;
  position: sticky;
  top: 80px;
  overflow-y: auto;
  overflow-x: hidden;
  max-height: calc(100vh - 100px);
  transition: background-color var(--transition), border-color var(--transition);
}

/* Hidden scrollbar for right sidebar - only show on hover */
.right-sidebar::-webkit-scrollbar {
  width: 8px;
}

.right-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.right-sidebar::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 4px;
  transition: background 0.3s;
}

.right-sidebar:hover::-webkit-scrollbar-thumb {
  background: var(--border-primary);
}

.right-sidebar:hover::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

.settings-section {
  margin-bottom: 2rem;
}

.settings-section:last-child {
  margin-bottom: 0;
}

/* Overlay for mobile sidebars */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}