/* ==========================================================================
   APP SIDEBAR & WORKSPACE CANVAS ARCHITECTURE
   ========================================================================== */

.studio-app-layout {
  display: flex;
  min-height: 100vh;
  width: 100%;
  position: relative;
  background: var(--bg-page);
}

/* 1. App Sidebar (Fixed Full-Height Navigation Rail) */
.app-sidebar {
  width: 260px;
  min-width: 260px;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background: rgba(12, 16, 26, 0.42);
  backdrop-filter: blur(28px) saturate(200%);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  z-index: 100;
  box-sizing: border-box;
  padding: 14px 12px;
  gap: 12px;
  overflow-y: auto;
  scrollbar-width: none; /* Firefox */
  box-shadow: 4px 0 28px rgba(0, 0, 0, 0.25);
  transition: width var(--transition-normal), background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="light"] .app-sidebar {
  background: rgba(255, 255, 255, 0.48);
  border-right: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.06);
}

.app-sidebar::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

body.has-custom-bg .app-sidebar {
  background: rgba(10, 14, 22, 0.42) !important;
  backdrop-filter: blur(32px) saturate(210%) !important;
  -webkit-backdrop-filter: blur(32px) saturate(210%) !important;
  border-color: rgba(255, 255, 255, 0.14) !important;
  box-shadow: 4px 0 32px rgba(0, 0, 0, 0.35) !important;
}

[data-theme="light"] body.has-custom-bg .app-sidebar {
  background: rgba(255, 255, 255, 0.48) !important;
  backdrop-filter: blur(32px) saturate(210%) !important;
  -webkit-backdrop-filter: blur(32px) saturate(210%) !important;
  border-color: rgba(255, 255, 255, 0.45) !important;
  box-shadow: 4px 0 32px rgba(0, 0, 0, 0.08) !important;
}

/* Sidebar Brand Header */
.sidebar-brand-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.sidebar-brand-img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: var(--bg-subtle);
  padding: 2px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

.sidebar-brand-names {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.sidebar-brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.sidebar-brand-subtitle {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
}

/* Sidebar Navigation Menu */
.sidebar-nav-menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.sidebar-nav-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 8px 10px 4px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  width: 100%;
}

.sidebar-nav-item:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
  border-color: var(--border-subtle);
}

.sidebar-nav-item.active {
  color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.12);
  border-color: rgba(59, 130, 246, 0.25);
  font-weight: 700;
}

.nav-item-svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.sidebar-nav-item:hover .nav-item-svg {
  transform: scale(1.1);
}

.nav-item-text {
  flex: 1;
  white-space: nowrap;
}

/* Sidebar Focus Audio Widget */
.sidebar-audio-widget {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-audio-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-audio-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.sidebar-audio-controls .audio-preset-select {
  flex: 1;
  max-width: 100%;
  font-size: 0.72rem;
  padding: 4px 6px;
}

.sidebar-audio-controls .audio-vol-slider {
  width: 50px;
}

/* Sidebar Footer */
.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

.sidebar-tools-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}

.sidebar-tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 4px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.68rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sidebar-tool-btn:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
  background: var(--bg-card);
}

.sidebar-tool-btn svg {
  width: 16px;
  height: 16px;
}

.sidebar-user-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Sidebar Collapse Toggle Buttons */
.sidebar-collapse-toggle-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  z-index: 10;
}

.sidebar-collapse-toggle-btn:hover {
  background: var(--bg-subtle);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.sidebar-collapse-toggle-btn svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-normal);
}

/* 1.1 Collapsed Sidebar Rail Mode */
.app-sidebar.collapsed {
  width: 68px !important;
  min-width: 68px !important;
  padding: 16px 8px;
  overflow: visible !important;
}

.app-sidebar.collapsed .sidebar-nav-menu,
.app-sidebar.collapsed .sidebar-user-block,
.app-sidebar.collapsed .auth-wrapper,
.app-sidebar.collapsed .user-dropdown-container {
  overflow: visible !important;
  position: relative;
}

.app-sidebar.collapsed .user-menu-dropdown {
  position: absolute;
  left: calc(100% + 14px) !important;
  right: auto !important;
  top: -12px !important;
  width: 240px;
  z-index: 1050;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-subtle);
  animation: flyoutSlideIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes flyoutSlideIn {
  from {
    opacity: 0;
    transform: translateX(-8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

.app-sidebar.collapsed .sidebar-brand-names,
.app-sidebar.collapsed .sidebar-nav-label,
.app-sidebar.collapsed .nav-item-text,
.app-sidebar.collapsed .live-pulse-dot,
.app-sidebar.collapsed .sidebar-tool-label,
.app-sidebar.collapsed .sync-label,
.app-sidebar.collapsed .auth-btn-label,
.app-sidebar.collapsed .user-name,
.app-sidebar.collapsed .dropdown-caret {
  display: none !important;
}

.app-sidebar.collapsed .sidebar-brand-header {
  justify-content: center;
  padding: 4px 0 10px;
  position: relative;
}

/* Keep arrow toggle visible, rotating 180deg in collapsed state to afford easy expansion */
.app-sidebar.collapsed .sidebar-collapse-toggle-btn {
  display: flex;
  position: absolute;
  right: -11px;
  top: 10px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-card, #131722);
  border: 1px solid var(--border-default, rgba(255,255,255,0.16));
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
  color: var(--text-primary);
  opacity: 0.85;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
}

.app-sidebar.collapsed .sidebar-collapse-toggle-btn:hover {
  opacity: 1;
  background: var(--bg-hover, #1e2436);
  transform: scale(1.1);
}

.app-sidebar.collapsed .sidebar-collapse-toggle-btn svg {
  width: 12px;
  height: 12px;
  transform: rotate(180deg);
}

.app-sidebar.collapsed .sidebar-nav-item {
  justify-content: center;
  padding: 10px 0;
}

.app-sidebar.collapsed .sidebar-tools-row {
  grid-template-columns: 1fr;
  gap: 6px;
}

.app-sidebar.collapsed .sidebar-tool-btn {
  padding: 8px 0;
}

.app-sidebar.collapsed .sync-status-pill {
  justify-content: center;
  padding: 4px 0;
}

.app-sidebar.collapsed .auth-btn-compact,
.app-sidebar.collapsed .user-profile-btn {
  justify-content: center !important;
  padding: 6px 0;
}

.app-sidebar.collapsed ~ .studio-main-content {
  margin-left: 68px;
  width: calc(100% - 68px);
}

/* 2. Main Workspace Canvas */
.studio-main-content {
  margin-left: 260px;
  width: calc(100% - 260px);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  box-sizing: border-box;
  transition: margin-left var(--transition-normal), width var(--transition-normal);
}

.app-sidebar.collapsed ~ .studio-main-content {
  margin-left: 68px;
  width: calc(100% - 68px);
}

/* Floating Topbar (Island Glass Capsule) */
.studio-floating-topbar {
  width: calc(100% - 28px);
  max-width: 1240px;
  margin: 8px 14px 4px;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: rgba(18, 22, 34, 0.65);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  z-index: 500;
  position: sticky;
  top: 8px;
  transition: all var(--transition-fast);
  touch-action: manipulation;
}

[data-theme="light"] .studio-floating-topbar {
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.08);
}

.floating-topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.topbar-sidebar-toggle-btn {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.topbar-sidebar-toggle-btn:hover {
  background: var(--bg-card);
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.topbar-sidebar-toggle-btn svg {
  width: 15px;
  height: 15px;
}

.mobile-menu-btn {
  display: none;
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-pill);
  padding: 6px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn svg {
  width: 18px;
  height: 18px;
}

/* Centered Floating Daily Quote Capsule (Clean Flex Flow, Zero Overlap) */
.daily-quote-capsule {
  position: relative;
  left: auto;
  transform: none;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 1 auto;
  width: fit-content;
  max-width: min(560px, calc(100% - 220px));
  min-width: 0;
  margin: 0 auto;
  padding: 4px 14px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  color: var(--text-secondary);
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
}

[data-theme="light"] .daily-quote-capsule {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.08);
}

.daily-quote-capsule:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

.daily-quote-capsule .quote-sparkle-icon {
  font-size: 0.85rem;
  flex-shrink: 0;
}

.daily-quote-capsule .quote-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-style: italic;
  font-size: clamp(0.72rem, 1.1vw, 0.8rem);
  line-height: 1.25;
  min-width: 0;
}

/* Mobile full-width quote banner (Hidden on desktop/tablets) */
.mobile-daily-quote-banner {
  display: none;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: auto;
}

.topbar-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
  color: var(--text-primary);
  white-space: nowrap;
}

.topbar-pill-btn:hover {
  background: var(--bg-card);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.topbar-pill-btn svg {
  width: 14px;
  height: 14px;
}

.zen-timer-trigger-btn {
  color: var(--accent-blue);
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.08);
}

.zen-timer-trigger-btn:hover {
  background: rgba(59, 130, 246, 0.18);
  border-color: var(--accent-blue);
}

/* Dynamic Workspace Views */
.workspace-view {
  flex: 1;
  width: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.workspace-view#viewFocusStudio {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 120px);
  padding: 0;
}

.workspace-view.hidden {
  display: none !important;
}

/* Frameless Clean Focus Studio Canvas (Zero Extra Space) */
.focus-studio-center-wrap {
  max-width: 520px;
  width: 100%;
  margin: auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  box-sizing: border-box;
}

/* Floating Metrics Bar */
.status-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 480px;
}

.metric-card {
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.03);
  text-align: center;
}

[data-theme="dark"] .metric-card {
  background: rgba(24, 24, 32, 0.65);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.metric-label {
  font-size: 0.65rem;
}

.metric-value {
  font-size: 0.92rem;
}

/* 100% Frameless Focus Studio (Card Box Completely Removed) */
.studio-card {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

/* Floating Glass Mode Selector Pill */
.timer-mode-selector {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  padding: 3px;
  margin-bottom: 4px;
  gap: 3px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .timer-mode-selector {
  background: rgba(24, 24, 32, 0.75);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.mode-btn {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all 0.16s cubic-bezier(0.16, 1, 0.3, 1);
}

.mode-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="light"] .mode-btn:hover {
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .mode-btn.active,
:root:not([data-theme="light"]) .mode-btn.active {
  background: #ffffff !important;
  color: #09090b !important;
  font-weight: 700 !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(255, 255, 255, 0.18) !important;
}

[data-theme="light"] .mode-btn.active {
  background: #09090b !important;
  color: #ffffff !important;
  font-weight: 700 !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2), 0 1px 3px rgba(0, 0, 0, 0.1) !important;
}

/* Floating Glowing Circle Timer */
.timer-ring-container {
  position: relative;
  width: min(270px, 34vh);
  height: min(270px, 34vh);
  margin: 6px auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timer-track {
  stroke-width: 10;
}

.timer-indicator {
  stroke-width: 10;
  filter: drop-shadow(0 0 12px rgba(59, 130, 246, 0.45));
}

.timer-digital-display {
  font-size: clamp(2.6rem, 5.5vh, 3.4rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 2px 0 4px;
}

.timer-state-badge {
  font-size: clamp(0.82rem, 2.2vw, 0.95rem);
  letter-spacing: 0.1em;
  font-weight: 800;
}

.timer-center-content .subject-dropdown-wrapper {
  pointer-events: auto !important;
  margin-top: 2px;
  position: relative;
}

.timer-center-content .timer-current-subject-btn {
  pointer-events: auto !important;
  padding: 3px 12px;
  font-size: 0.76rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
}

[data-theme="dark"] .timer-center-content .timer-current-subject-btn {
  background: rgba(0, 0, 0, 0.3);
}

.subject-dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  width: 230px;
  overflow: visible !important;
  scrollbar-width: none;
  z-index: 9999;
  pointer-events: auto !important;
  background: var(--bg-card);
  border: 1px solid var(--border-focus);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
}

.subject-menu-items {
  max-height: 180px;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  pointer-events: auto !important;
}

.view-content-grid {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(16px, 3vw, 28px) 16px 40px;
  box-sizing: border-box;
}

/* 3. Minimalist Clean Footer (Docked Neatly at Bottom) */
.studio-compact-footer {
  width: 100%;
  margin-top: auto;
  padding: 10px 20px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.compact-footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.compact-footer-inner a,
.compact-footer-inner .footer-link-btn {
  color: var(--text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  padding: 0;
  font-size: 0.76rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.compact-footer-inner a:hover,
.compact-footer-inner .footer-link-btn:hover {
  color: var(--accent-blue);
  text-decoration: underline;
}

.footer-dot {
  opacity: 0.4;
}

/* 4. Floating Focus Audio Dock (Draggable & Collapsible Glass Island) */
.floating-audio-dock {
  position: fixed;
  bottom: 24px;
  right: 24px;
  left: auto;
  top: auto;
  z-index: 95;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: rgba(18, 18, 24, 0.86);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  user-select: none;
  touch-action: none;
  transition: box-shadow var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="light"] .floating-audio-dock {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.1);
}

.floating-audio-dock:hover {
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  border-color: var(--border-default);
}

/* Drag Handle Grip */
.audio-drag-handle {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  color: var(--text-muted);
  padding: 4px 2px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.audio-drag-handle:active {
  cursor: grabbing;
  color: var(--accent-blue);
}

.audio-drag-handle svg {
  width: 14px;
  height: 14px;
}

/* Minimize / Collapse Toggle Button */
.audio-collapse-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color var(--transition-fast), transform var(--transition-normal);
}

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

.audio-collapse-btn svg {
  width: 13px;
  height: 13px;
  transition: transform var(--transition-normal);
}

/* Collapsed Mini-Pill Mode */
.floating-audio-dock.dock-collapsed {
  padding: 6px 8px;
  gap: 6px;
}

.floating-audio-dock.dock-collapsed .audio-current-name,
.floating-audio-dock.dock-collapsed .audio-preset-select,
.floating-audio-dock.dock-collapsed .audio-volume-wrap {
  display: none !important;
}

.floating-audio-dock.dock-collapsed .audio-collapse-btn svg {
  transform: rotate(180deg);
}

/* Equalizer Bars Animation */
.audio-equalizer-bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
  width: 12px;
}

.eq-bar {
  width: 2.5px;
  height: 4px;
  background: var(--accent-blue);
  border-radius: 1px;
  transition: height 0.2s ease;
}

.audio-equalizer-bars.is-playing .eq-bar:nth-child(1) {
  animation: eqBounce1 0.8s infinite ease-in-out alternate;
}

.audio-equalizer-bars.is-playing .eq-bar:nth-child(2) {
  animation: eqBounce2 0.6s infinite ease-in-out alternate;
}

.audio-equalizer-bars.is-playing .eq-bar:nth-child(3) {
  animation: eqBounce3 0.9s infinite ease-in-out alternate;
}

@keyframes eqBounce1 {
  0% { height: 3px; }
  100% { height: 14px; }
}

@keyframes eqBounce2 {
  0% { height: 12px; }
  100% { height: 4px; }
}

@keyframes eqBounce3 {
  0% { height: 5px; }
  100% { height: 13px; }
}

.audio-current-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  max-width: 105px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-preset-select {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 4px 6px;
  cursor: pointer;
  max-width: 125px;
}

.audio-play-toggle-btn {
  background: var(--accent-blue);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast), filter var(--transition-fast);
  flex-shrink: 0;
}

.audio-play-toggle-btn:hover {
  transform: scale(1.08);
  filter: brightness(1.1);
}

.audio-play-toggle-btn svg {
  width: 11px;
  height: 11px;
}

.audio-volume-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
}

.audio-vol-icon {
  width: 13px;
  height: 13px;
  color: var(--text-muted);
}

.audio-vol-slider {
  width: 46px;
  height: 4px;
  cursor: pointer;
  accent-color: var(--accent-blue);
}

/* Mobile Responsive Adjustments (Android Web & Small Screens) */
@media (max-width: 980px) {
  html, body {
    max-width: 100vw;
    height: 100%;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    overscroll-behavior-y: none;
  }

  .sidebar-collapse-toggle-btn {
    display: none !important;
  }

  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100vh;
    height: 100dvh;
    max-height: 100dvh;
    width: 270px !important;
    min-width: 270px !important;
    display: flex;
    flex-direction: column;
    padding: calc(12px + env(safe-area-inset-top, 0px)) 12px calc(12px + env(safe-area-inset-bottom, 0px)) !important;
    box-sizing: border-box;
    transform: translateX(-100%);
    box-shadow: none;
    z-index: 10000;
    overflow: hidden; /* Sidebar container does not scroll as a whole */
  }

  .app-sidebar.collapsed {
    width: 270px !important;
    min-width: 270px !important;
    padding: calc(12px + env(safe-area-inset-top, 0px)) 12px calc(12px + env(safe-area-inset-bottom, 0px)) !important;
    overflow: hidden !important;
    transform: translateX(-100%);
  }

  .app-sidebar.open,
  .app-sidebar.collapsed.open {
    transform: translateX(0) !important;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.7) !important;
  }

  /* Restore labels inside mobile drawer even if collapsed class was set on document load */
  .app-sidebar.collapsed .sidebar-brand-names,
  .app-sidebar.collapsed .sidebar-nav-label,
  .app-sidebar.collapsed .nav-item-text,
  .app-sidebar.collapsed .sidebar-tool-label,
  .app-sidebar.collapsed .sync-label,
  .app-sidebar.collapsed .auth-btn-label,
  .app-sidebar.collapsed .user-name,
  .app-sidebar.collapsed .dropdown-caret {
    display: block !important;
  }

  .app-sidebar.collapsed .sidebar-brand-names {
    display: flex !important;
    flex-direction: column !important;
  }

  .app-sidebar.collapsed .sidebar-nav-item {
    justify-content: flex-start !important;
    padding: 9px 12px !important;
  }

  .app-sidebar.collapsed .sidebar-tools-row {
    display: flex !important;
    align-items: center !important;
    justify-content: space-around !important;
    grid-template-columns: none !important;
    width: 100% !important;
  }

  .app-sidebar.collapsed .sidebar-tool-btn {
    flex: 1 !important;
    padding: 8px 4px !important;
  }

  .app-sidebar.collapsed .auth-btn-compact,
  .app-sidebar.collapsed .user-profile-btn {
    justify-content: flex-start !important;
    padding: 8px 12px !important;
  }

  .app-sidebar .sidebar-brand-header {
    flex-shrink: 0;
    padding: 4px 6px 8px;
    margin-bottom: 4px;
  }

  .app-sidebar .sidebar-nav-menu {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-right: 2px;
    padding-bottom: 6px;
  }

  .app-sidebar .sidebar-nav-item {
    padding: 9px 12px;
    font-size: 0.88rem;
  }

  .app-sidebar .sidebar-user-block {
    margin-top: 6px;
    flex-shrink: 0;
  }

  .app-sidebar .sidebar-footer {
    flex-shrink: 0;
    margin-top: auto;
    padding-top: 10px;
    padding-bottom: calc(4px + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--border-subtle);
  }

  .app-sidebar .sidebar-tools-row {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 4px;
    width: 100%;
  }

  .app-sidebar .sidebar-tool-btn {
    flex: 1;
    padding: 8px 4px;
    font-size: 0.76rem;
  }

  .app-sidebar.collapsed ~ .studio-main-content,
  .studio-main-content {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100vw !important;
    min-height: 100vh;
    min-height: 100dvh;
    height: 100dvh;
    padding: 0 !important;
    overflow-x: hidden;
    overflow-y: hidden;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
  }

  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 9999;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    border-radius: var(--radius-pill);
    touch-action: manipulation;
    pointer-events: auto;
  }

  .topbar-sidebar-toggle-btn {
    display: none !important;
  }

  .topbar-actions .nav-leaderboard-btn,
  .topbar-actions .zen-timer-trigger-btn {
    display: none !important;
  }

  .studio-floating-topbar {
    width: calc(100% - 16px);
    margin: 4px 8px 2px;
    padding: 4px 10px;
    min-height: 42px;
    gap: 6px;
    box-sizing: border-box;
  }

  .floating-audio-dock {
    bottom: 16px;
    right: 16px;
    left: auto;
    max-width: calc(100vw - 24px);
    padding: 4px 8px;
    gap: 5px;
    border-radius: var(--radius-pill);
    overflow: visible !important;
    touch-action: none !important;
    box-sizing: border-box;
  }

  .audio-drag-handle {
    touch-action: none !important;
    padding: 4px 2px;
  }

  .audio-current-name {
    display: none !important;
  }

  .audio-volume-wrap {
    display: none !important;
  }

  .audio-preset-select {
    max-width: 105px !important;
    min-width: 60px !important;
    font-size: 0.70rem !important;
    padding: 3px 4px !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    overflow: hidden !important;
  }

  .audio-engine-badge {
    font-size: 0.62rem !important;
    padding: 2px 5px !important;
  }

  /* Mobile Focus Studio Viewport Fit: Direct Natural Alignment, Zero Dead Top Space & Full Bottom Buttons Visibility */
  .workspace-view#viewFocusStudio {
    flex: 1 1 auto;
    min-height: 0;
    height: calc(100dvh - 54px);
    max-height: calc(100dvh - 54px);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 2px 8px 6px;
    box-sizing: border-box;
    touch-action: pan-x pan-y;
  }

  .focus-studio-center-wrap {
    width: 100%;
    max-width: 440px;
    height: 100%;
    max-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 0;
    padding: 0;
    margin: 0 auto;
    box-sizing: border-box;
  }

  .status-metrics-grid {
    margin: 0 0 4px 0;
    gap: 6px;
    width: 100%;
  }

  .metric-card {
    padding: 4px 6px;
    border-radius: 12px;
  }

  .metric-label {
    font-size: 0.62rem;
  }

  .metric-value {
    font-size: 0.84rem;
  }

  .studio-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    gap: 2px;
    margin: 0;
    padding: 0;
  }

  /* Other mobile views (Overview, Analytics, Planner, Leaderboard) scroll normally */
  .workspace-view:not(#viewFocusStudio) {
    flex: 1 1 auto;
    min-height: 0;
    height: calc(100dvh - 54px);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    padding: 8px 12px 64px;
    box-sizing: border-box;
  }
}

@media (max-width: 680px) {
  /* Ultra-Clean Mobile Header: Sidebar Menu Button + Full-Width Spacious Quote */
  .studio-floating-topbar {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    padding: 6px 12px !important;
    min-height: 48px !important;
    border-radius: 20px !important;
    margin-bottom: 14px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .floating-topbar-left {
    display: flex !important;
    align-items: center !important;
    flex-shrink: 0 !important;
  }

  .mobile-menu-btn {
    display: inline-flex !important;
    width: 38px !important;
    height: 38px !important;
    min-width: 38px !important;
    padding: 0 !important;
    border-radius: 50% !important;
    align-items: center !important;
    justify-content: center !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid var(--border-subtle) !important;
  }

  .topbar-sidebar-toggle-btn {
    display: none !important;
  }

  /* Full-Width Quote spanning across the newly available topbar space */
  .daily-quote-capsule {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    flex: 1 1 auto !important;
    max-width: none !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: 4px 6px !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    cursor: pointer !important;
  }

  .daily-quote-capsule .quote-sparkle-icon {
    font-size: 0.95rem !important;
    flex-shrink: 0 !important;
    margin-right: 6px !important;
  }

  .daily-quote-capsule .quote-text {
    font-size: 0.78rem !important;
    line-height: 1.25 !important;
    color: var(--text-secondary) !important;
    font-style: italic !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    flex: 1 1 auto !important;
    min-width: 0 !important;
    text-align: left !important;
  }

  [data-theme="light"] .daily-quote-capsule .quote-text {
    color: var(--text-primary) !important;
  }

  .daily-quote-capsule .quote-refresh-btn {
    flex-shrink: 0 !important;
    width: 28px !important;
    height: 28px !important;
    min-width: 28px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 50% !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid var(--border-subtle) !important;
    color: var(--text-muted) !important;
    cursor: pointer !important;
    padding: 0 !important;
    margin-left: 6px !important;
    transition: all var(--transition-fast) !important;
  }

  .daily-quote-capsule .quote-refresh-btn svg {
    width: 14px !important;
    height: 14px !important;
  }

  .daily-quote-capsule .quote-refresh-btn:hover {
    color: var(--accent-blue) !important;
    border-color: var(--accent-blue) !important;
    transform: rotate(45deg) !important;
  }

  /* Hide extra topbar buttons on mobile (accessible via sidebar drawer) */
  .topbar-actions {
    display: none !important;
  }
}

@media (max-width: 520px) {
  .topbar-pill-btn {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    padding: 0 !important;
    border-radius: var(--radius-pill);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
    pointer-events: auto;
  }

  .topbar-pill-btn svg {
    margin: 0 !important;
  }

  .status-metrics-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 6px !important;
    width: 100% !important;
    max-width: 100% !important;
  }

  .metric-card {
    padding: 6px 8px !important;
  }

  .metric-label {
    font-size: 0.68rem !important;
  }

  .metric-value {
    font-size: 0.85rem !important;
  }

  .studio-card {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .timer-mode-selector {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 3px !important;
    gap: 2px !important;
    width: 100% !important;
    max-width: 380px !important;
    margin: 0 auto 6px !important;
    box-sizing: border-box !important;
  }

  .mode-btn {
    padding: 6px 4px !important;
    font-size: 0.72rem !important;
    gap: 3px !important;
    flex: 1 1 0 !important;
    min-width: 0 !important;
    justify-content: center !important;
  }

  .mode-btn .mode-svg-icon {
    width: 12px !important;
    height: 12px !important;
  }

  .countdown-presets-row {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 4px !important;
    padding: 0 4px !important;
    margin: 4px auto 10px !important;
    max-width: 100% !important;
  }

  .cd-preset-chip {
    padding: 3px 8px !important;
    font-size: 0.74rem !important;
  }

  .timer-ring-container {
    position: relative !important;
    width: min(250px, 66vw) !important;
    height: min(250px, 66vw) !important;
    margin: 4px auto 14px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .timer-center-content {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    right: auto !important;
    bottom: auto !important;
    transform: translate(-50%, -50%) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    text-align: center !important;
    width: 82% !important;
    height: 82% !important;
    border-radius: 50% !important;
    margin: 0 !important;
  }

  .timer-digital-display {
    font-size: clamp(2.2rem, 10.5vw, 3.2rem) !important;
    margin-bottom: 4px !important;
  }

  .timer-current-subject-btn {
    font-size: 0.75rem !important;
    padding: 4px 10px !important;
    max-width: 160px !important;
  }

  .btn-timer-primary {
    width: 100% !important;
    max-width: 260px !important;
    padding: 12px 18px !important;
    font-size: 0.95rem !important;
  }

  .timer-secondary-actions {
    width: 100% !important;
    max-width: 275px !important;
    gap: 6px !important;
    justify-content: center !important;
  }

  .btn-timer-subtle {
    padding: 7px 9px !important;
    font-size: 0.76rem !important;
  }

  .zen-timer-overlay {
    padding: env(safe-area-inset-top, 14px) env(safe-area-inset-right, 14px) env(safe-area-inset-bottom, 14px) env(safe-area-inset-left, 14px) !important;
    height: 100dvh !important;
  }

  .modal-overlay {
    padding: 8px !important;
  }

  .modal-card,
  .modal-card-leaderboard,
  .modal-card-profile,
  .modal-card-day-history {
    width: 100% !important;
    max-width: calc(100vw - 16px) !important;
    max-height: calc(100dvh - 16px) !important;
    border-radius: 16px !important;
  }
}

@media (max-width: 360px) {
  .mode-btn {
    padding: 6px 2px !important;
    font-size: 0.67rem !important;
  }

  .cd-preset-chip {
    padding: 2px 6px !important;
    font-size: 0.70rem !important;
  }

  .timer-ring-container {
    width: min(220px, 68vw) !important;
    height: min(220px, 68vw) !important;
  }

  .timer-digital-display {
    font-size: 2.1rem !important;
  }

  .btn-timer-primary {
    max-width: 230px !important;
    padding: 10px 14px !important;
    font-size: 0.90rem !important;
  }

  .btn-timer-subtle {
    padding: 6px 6px !important;
    font-size: 0.72rem !important;
  }
}