:root {
  /* Design Tokens */
  --bg-primary: #000000;
  --bg-elevated: #121212;
  --bg-surface: #1a1a1a;
  --bg-hover: #252525;
  --border-subtle: #2a2a2a;
  --border-default: #333333;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-tertiary: #666666;
  --accent-primary: #4a9eff;
  --accent-success: #34c759;
  --accent-warning: #ff9f0a;
  --accent-danger: #ff453a;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --font-stack: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', system-ui, sans-serif;

  /* Spacing Tokens */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  height: 100%;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-stack);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  height: 100%;
  
  /* iOS Safe Area & Standalone padding */
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

::selection {
  background-color: rgba(74, 158, 255, 0.3);
  color: #fff;
}

/* Custom Scrollbar for Dark Mode */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* ==========================================================================
   Typography Scale
   ========================================================================== */

.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-accent { color: var(--accent-primary); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }
.text-warning { color: var(--accent-warning); }

/* ==========================================================================
   Layout System
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.grid-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .grid-layout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .grid-layout {
    grid-template-columns: minmax(350px, 1fr) minmax(400px, 2fr);
  }
}

.card {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Components
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all 150ms ease;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #fff;
}
.btn-primary:hover {
  background-color: #388de6;
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
}
.btn-secondary:hover {
  background-color: var(--bg-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
}
.btn-ghost:hover {
  background-color: var(--bg-surface);
}

.btn-danger {
  background-color: rgba(255, 69, 58, 0.1);
  color: var(--accent-danger);
  border: 1px solid rgba(255, 69, 58, 0.3);
}
.btn-danger:hover {
  background-color: rgba(255, 69, 58, 0.2);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Inputs */
.input-rep {
  width: 100%;
  height: 56px;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1.5rem; /* 24px, >16px to prevent iOS zoom */
  font-weight: 700;
  text-align: center;
  font-family: inherit;
  transition: border-color 150ms ease;
  appearance: textfield;
}

.input-rep:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.input-rep::-webkit-outer-spin-button,
.input-rep::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Stepper (quick adjust) */
.stepper {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin: var(--spacing-sm) 0;
}

.stepper .btn {
  flex: 1;
  max-width: 80px;
}

/* Keypad */
.keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.keypad .btn {
  height: 56px;
  font-size: 1.25rem;
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
}
.keypad .btn:hover {
  background-color: var(--bg-hover);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}
.badge.success {
  color: var(--accent-success);
  background-color: rgba(52, 199, 89, 0.1);
  border-color: rgba(52, 199, 89, 0.3);
}
.badge.warning {
  color: var(--accent-warning);
  background-color: rgba(255, 159, 10, 0.1);
  border-color: rgba(255, 159, 10, 0.3);
}

/* Streak Counter */
.streak-counter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 700;
  color: var(--accent-warning);
}

/* Session & Set Rows */
.session-card {
  margin-bottom: var(--spacing-md);
}

.session-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--border-subtle);
}

.set-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
}
.set-row:last-child {
  border-bottom: none;
}

/* Calendar */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-top: var(--spacing-sm);
}

.calendar-header-day {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-xs);
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  border: 2px solid transparent;
}

.calendar-day.empty {
  color: var(--text-secondary);
}

.calendar-day.has-data {
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

.calendar-day.partial {
  background-color: rgba(74, 158, 255, 0.2);
  color: var(--accent-primary);
}

.calendar-day.complete {
  background-color: rgba(52, 199, 89, 0.2);
  color: var(--accent-success);
}

.calendar-day.today {
  border-color: var(--text-secondary);
}

.calendar-day.selected {
  border-color: var(--accent-primary);
  background-color: var(--accent-primary);
  color: #fff;
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--bg-elevated);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  padding: var(--spacing-lg) var(--spacing-md) calc(var(--spacing-lg) + env(safe-area-inset-bottom));
  transform: translateY(100%);
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}

.modal.active .modal-content {
  transform: translateY(0);
}

/* Navigation & Tabs */
.nav-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-top: calc(var(--spacing-sm) + env(safe-area-inset-top));
}

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(18, 18, 18, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0 calc(var(--spacing-sm) + env(safe-area-inset-bottom));
  z-index: 50;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  font-size: 0.65rem;
  font-weight: 500;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 12px;
}

.tab-item.active {
  color: var(--accent-primary);
}
.tab-item svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Chart & Stats */
.chart-container {
  position: relative;
  width: 100%;
  height: 250px;
  margin: var(--spacing-md) 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-sm);
}

.stat-card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: var(--spacing-xs) 0;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Toast */
.toast-container {
  position: fixed;
  top: env(safe-area-inset-top);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 9999px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 8px;
  pointer-events: auto;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 300ms ease, transform 300ms ease;
}

.toast.active {
  opacity: 1;
  transform: translateY(0);
}

/* Progress Bar */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background-color: var(--bg-surface);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--accent-primary);
  border-radius: 9999px;
  transition: width 300ms ease;
}
.progress-bar.success { background-color: var(--accent-success); }
.progress-bar.warning { background-color: var(--accent-warning); }

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  color: var(--text-tertiary);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes slideDown {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-5px); }
}

@keyframes countUp {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.animate-slide-up { animation: slideUp 0.4s ease-out forwards; }
.animate-slide-down { animation: slideDown 0.4s ease-out forwards; }
.animate-fade-in { animation: fadeIn 0.3s ease-out forwards; }
.animate-pulse { animation: pulse 2s infinite ease-in-out; }
.animate-shake { animation: shake 0.4s ease-in-out; }
.animate-count-up { animation: countUp 0.3s ease-out forwards; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Flexbox */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-1 { flex: 1; }

/* Gaps */
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* Display */
.hidden { display: none !important; }
.visible { display: block !important; }

/* Margins */
.m-0 { margin: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.my-sm { margin-top: var(--spacing-sm); margin-bottom: var(--spacing-sm); }
.my-md { margin-top: var(--spacing-md); margin-bottom: var(--spacing-md); }

/* Padding */
.p-0 { padding: 0; }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

/* Typography alignments */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Sizing */
.w-full { width: 100%; }
.h-full { height: 100%; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }

/* Text Utilities */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ==========================================================================
   Additional Missing Classes to Match index.html
   ========================================================================== */

main {
  padding-bottom: calc(80px + env(safe-area-inset-bottom));
}

#main-content {
  padding-top: calc(80px + env(safe-area-inset-top));
}

/* 1. .app-header */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-top: calc(var(--spacing-sm) + env(safe-area-inset-top));
}

/* 2. .bottom-tab-bar */
.bottom-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(18, 18, 18, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0 calc(var(--spacing-sm) + env(safe-area-inset-bottom));
  z-index: 50;
}

/* 3. .tab-btn */
.tab-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--text-secondary);
  font-size: 0.65rem;
  font-weight: 500;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 12px;
}
.tab-btn.active {
  color: var(--accent-primary);
}

/* 4. .modal-overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

/* 5. .btn-large */
.btn-large {
  padding: var(--spacing-md) var(--spacing-lg);
  height: 56px;
  font-size: 1.125rem;
}

/* 6. .btn-full */
.btn-full {
  width: 100%;
}

/* 7. .status-badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
}
.status-badge.complete {
  color: var(--accent-success);
  background-color: rgba(52, 199, 89, 0.1);
  border-color: rgba(52, 199, 89, 0.3);
}
.status-badge.incomplete {
  color: var(--text-secondary);
}

/* 8. .rep-input */
.rep-input {
  width: 100%;
  height: 56px;
  background-color: var(--bg-surface);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  font-family: inherit;
  transition: border-color 150ms ease;
  appearance: textfield;
}
.rep-input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

/* 9. .btn-stepper */
.btn-stepper {
  width: 40px;
  height: 40px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.btn-stepper:active {
  background-color: var(--bg-hover);
}

/* 10. .stepper-controls */
.stepper-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* 11. .calendar-header */
.calendar-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: var(--spacing-xs);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* 12. .calendar-container */
.calendar-container {
  margin: var(--spacing-md) 0;
}

/* 13. .month-selector */
.month-selector {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-weight: 600;
}
.month-selector button {
  background: none;
  border: none;
  color: var(--accent-primary);
  font-size: 1.2rem;
  cursor: pointer;
}

/* 14. .view-header */
.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

/* 15. .time-range-selector */
.time-range-selector {
  display: flex;
  gap: var(--spacing-sm);
  background-color: var(--bg-surface);
  padding: 4px;
  border-radius: var(--radius-lg);
}

/* 16. .range-btn */
.range-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}
.range-btn.active {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* 17. .chart-card */
.chart-card {
  margin-bottom: var(--spacing-md);
}

/* 18. .records-card */
.records-card {
  margin-bottom: var(--spacing-md);
}

/* 19. .record-row */
.record-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
}
.record-row:last-child {
  border-bottom: none;
}

/* 20. .record-value */
.record-value {
  font-weight: 700;
  color: var(--accent-primary);
}

/* 21. .selected-day-card */
.selected-day-card {
  margin-top: var(--spacing-lg);
}

/* 22. .daily-summary */
.daily-summary {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 700;
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--spacing-md);
}
.daily-summary span {
  color: var(--accent-primary);
  font-size: 1.75rem;
}

/* 23. .session-total */
.session-total {
  text-align: right;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: var(--spacing-sm);
}
.session-total span {
  color: var(--text-primary);
}

/* 24. .card-header */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

/* 25. .set-label */
.set-label {
  font-weight: 600;
  color: var(--text-secondary);
}

/* 26. .retro-edit-container */
.retro-edit-container {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-default);
}
.retro-edit-container h4 {
  margin: var(--spacing-sm) 0;
}

/* 27. .edit-actions */
.edit-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

/* 28. .selected-day-details */
.selected-day-details {
  margin-top: var(--spacing-md);
}

/* 29. .detail-row */
.detail-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-xs) 0;
}
.detail-row.total {
  font-weight: 700;
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--spacing-xs);
  padding-top: var(--spacing-sm);
}

/* 30. .settings-list */
.settings-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* 31. .settings-btn */
.settings-btn {
  width: 100%;
  padding: var(--spacing-md);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
}
.settings-btn:active {
  background-color: var(--bg-hover);
}

/* 32. .file-upload-btn */
.file-upload-btn {
  display: block;
}

/* 33. .about-info */
.about-info {
  margin-top: var(--spacing-xl);
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* 34. .danger-text */
.danger-text {
  color: var(--accent-danger);
}

/* 35. .icon-button */
.icon-button {
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* 36. .header-date */
.header-date {
  font-weight: 700;
  font-size: 1.25rem;
}

/* 37. .header-streak */
.header-streak {
  font-weight: 700;
  color: var(--accent-warning);
}

/* 38. .tab-icon */
.tab-icon {
  font-size: 1.25rem;
}

/* 39. .tab-label */
.tab-label {
  font-size: 0.65rem;
}

/* 40. .modal-header */
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

/* 41. .modal-body */
.modal-body {
  display: flex;
  flex-direction: column;
}

/* View visibility toggling */
.view {
  display: none;
  padding: var(--spacing-md);
}
.view.active {
  display: block;
}

/* Remove number input spinners on rep-input */
.rep-input::-webkit-outer-spin-button,
.rep-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.rep-input[type=number] {
  -moz-appearance: textfield;
}

/* Stats view section spacing */
.stats-grid {
  margin-bottom: var(--spacing-md);
}

/* Calendar day interaction */
.calendar-day:not(.empty):hover {
  background-color: var(--bg-hover);
}

/* Modal transition when not hidden */
.modal-overlay:not(.hidden) .modal-content {
  transform: translateY(0);
}
.modal-overlay .modal-content {
  background-color: var(--bg-elevated);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  padding: var(--spacing-lg) var(--spacing-md) calc(var(--spacing-lg) + env(safe-area-inset-bottom));
  transform: translateY(100%);
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}