:root {
  /* Spacing Units */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-input: 0 -2px 10px rgba(0, 0, 0, 0.05);

  /* Animations */
  --duration-fast: 100ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
  --duration-theme: 400ms;
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);

  /* Semantic */
  --color-primary: #bcd570;
  --color-primary-dark: #8ba346;
  --color-pear-black: #1a1c16;
}

[data-theme='light'] {
  --color-primary-light: #f7fae6;
  --glass-bg: rgba(247, 250, 230, 0.4);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-blur: blur(12px);
  --color-background: #fafafa;
  --color-surface: #ffffff;
  --color-text-primary: #1a1c16;
  --color-text-secondary: #46483e;
  --color-text-tertiary: #76786d;
  --color-border: #e2e4d9;
  --color-input-bg: #f9fafb;
}

[data-theme='dark'] {
  --color-primary-light: rgba(188, 213, 112, 0.15);
  --glass-bg: rgba(26, 28, 22, 0.7);
  --glass-border: rgba(188, 213, 112, 0.1);
  --glass-blur: blur(12px);
  --color-background: #0f100d;
  --color-surface: #1a1c16;
  --color-text-primary: #f7fae6;
  --color-text-secondary: #b4b6a8;
  --color-text-tertiary: #76786d;
  --color-border: #2e3026;
  --color-input-bg: #1e2019;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family:
    'Inter',
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  color: var(--color-text-primary);
  padding: 0;
  overflow: hidden;
}

/* Outer device frame for preview purposes */
.device-mockup {
  width: 393px;
  height: 852px;
  background-color: #000;
  border-radius: 40px;
  padding: 0;
  box-shadow: none;
  position: relative;
  overflow: hidden;
  display: flex;
  /* Ensure clipping of children */
  mask-image: radial-gradient(white, black);
  -webkit-mask-image: -webkit-radial-gradient(white, black);
  isolation: isolate;
  transform: translateZ(0);
}

.app-container {
  flex: 1;
  width: 100%;
  height: 100%;
  background-color: var(--color-background);
  border-radius: 28px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  /* Ultimate clipping fix */
  mask-image: radial-gradient(white, black);
  -webkit-mask-image: -webkit-radial-gradient(white, black);
  isolation: isolate;
  transform: translateZ(0); /* Fix for sub-pixel bleeding in some browsers */
}

.content-area {
  flex: 1;
  overflow-y: auto;
  padding-bottom: 140px; /* Space for input area */
  scrollbar-width: none; /* Firefox */
}

.content-area::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

/* Top Navigation (Calendar & Tabs) */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  padding: 48px 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--duration-theme) ease;
}

/* Calendar Week */
.calendar-week {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  padding: 8px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
}

.calendar-day {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  background: transparent;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 10px 4px 8px;
  border-radius: var(--radius-md);
  min-width: 44px;
  -webkit-tap-highlight-color: transparent;
  transition: all var(--duration-fast) var(--ease-smooth);
}

.calendar-day:hover {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.calendar-day:active {
  transform: scale(0.95);
}

.day-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.day-name {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.day-number {
  font-size: 18px;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-dots {
  display: flex;
  gap: 2px;
  height: 4px;
  justify-content: center;
  align-items: center;
  margin-top: auto;
}

.dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: #000;
  transition: all var(--duration-fast) var(--ease-out);
}

.dot--task {
  background-color: var(--color-primary);
  width: 4px;
  height: 4px;
}

.dot--event {
  background-color: var(--color-text-tertiary);
  width: 4px;
  height: 4px;
}

.calendar-day.is-selected {
  background: var(--color-primary);
  box-shadow: none;
  transform: translateY(-2px) scale(1.05);
}

.calendar-day.is-selected .day-name {
  color: rgba(15, 16, 13, 0.6);
  font-weight: 600;
}

.calendar-day.is-selected .day-number {
  color: var(--color-pear-black);
  font-weight: 800;
}

/* Dots inside active day should be dark for contrast */
.calendar-day.is-selected .dot {
  background-color: rgba(26, 28, 22, 0.4) !important;
}

/* Tabs */
.tabs {
  display: flex;
  background: var(--color-border);
  backdrop-filter: var(--glass-blur);
  padding: 4px;
  border-radius: 14px;
  gap: 4px;
  opacity: 0.9;
}

.tab {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 14px;
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 10px;
  -webkit-tap-highlight-color: transparent;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

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

.tab.is-active {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  box-shadow: none;
}

[data-theme='dark'] .tab.is-active {
  background-color: var(--color-primary);
  color: var(--color-pear-black);
  box-shadow: none;
}

/* Tab Content */
.tab-content {
  padding: 16px 20px;
  animation: fadeIn var(--duration-normal) var(--ease-out);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  gap: 16px;
}

.progress-bar-container {
  flex: 1;
  height: 6px;
  background: var(--color-border);
  border-radius: 10px;
  overflow: hidden;
  opacity: 0.8;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-smooth);
}

.tab-progress {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

/* Task List & Task Card */
.task-list,
.upcoming-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  /* Push slightly down from the header */
  padding-top: 12px;
}

.task-card {
  width: 100%;
  min-height: 56px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  box-shadow: none;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  transition: all var(--duration-normal) var(--ease-smooth);
  -webkit-tap-highlight-color: transparent;
}

.task-card:active {
  transform: scale(0.98);
}

.checkbox {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--duration-normal) var(--ease-bounce);
}

.checkbox-icon {
  color: white;
  width: 16px;
  height: 16px;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--duration-normal) var(--ease-bounce);
}

.task-text {
  font-size: 16px;
  font-weight: var(--weight-regular);
  color: var(--color-text-primary);
  position: relative;
}

.task-text::after {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1.5px;
  background-color: var(--color-text-tertiary);
  transition: width var(--duration-slow) var(--ease-out);
}

/* Completed State Variations */
.is-completed {
  opacity: 0.6;
  border-left: 4px solid var(--color-primary) !important;
  background: var(--color-primary-light) !important;
}

.is-completed .checkbox {
  display: none;
}

.is-completed .checkbox-icon {
  opacity: 0;
}

.is-completed .task-text {
  color: var(--color-text-secondary);
  text-decoration: none !important;
}

/* Strikethrough removed per request */
/* .is-completed .task-text::after {
  width: 100%;
} */

/* Bounce Animation Triggers */
.checkbox.animating {
  transform: scale(1.2);
}

/* Upcoming Row */
.upcoming-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  box-shadow: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-smooth);
}

.upcoming-row:hover {
  background: white;
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.upcoming-day {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.upcoming-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-light);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(188, 213, 112, 0.2);
}

.badge-number {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary);
}

.badge-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-primary);
  opacity: 0.8;
  letter-spacing: 0.5px;
}

/* Input Area */
.input-area {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
  padding: 16px 20px 48px;
  border: 1px solid var(--glass-border);
  box-shadow: none;
  z-index: 102;
}

.task-input {
  width: 100%;
  height: 48px;
  border: none;
  font-size: 16px;
  font-family: inherit;
  color: var(--color-text-primary);
  outline: none;
  background: transparent;
}

.task-input::placeholder {
  color: var(--color-text-tertiary);
}

/* --- Added Components --- */

.app-header {
  height: 64px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-top-left-radius: 25px; /* Slightly smaller than container to prevent bleed */
  border-top-right-radius: 25px;
  transition: all var(--duration-theme) ease;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: none;
  background: transparent;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

/* Settings Overlay */
.settings-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 2000;
  display: flex;
  align-items: flex-end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(4px);
}

.settings-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.settings-sheet {
  width: 100%;
  max-height: 90%;
  background: var(--color-surface);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  padding: 12px 20px 40px;
  transform: translateY(100%);
  transition: transform 0.4s var(--ease-bounce);
  box-shadow: none;
  display: flex;
  flex-direction: column;
  /* Ensure clipping within the sheet itself */
  overflow: hidden;
}

.settings-overlay.is-active .settings-sheet {
  transform: translateY(0);
}

.sheet-handle {
  width: 36px;
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  margin: 0 auto 16px;
  flex-shrink: 0;
}

.sheet-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-shrink: 0;
}

.sheet-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.close-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.settings-content {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.settings-section {
  margin-bottom: 24px;
}

.settings-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.theme-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.theme-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 0;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.theme-option i {
  width: 20px;
  height: 20px;
}

.theme-option span {
  font-size: 12px;
  font-weight: 500;
}

.theme-option.is-active {
  border: 2px solid var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.language-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lang-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  width: 100%;
  font-family: inherit;
}

.lang-item .check-icon {
  width: 18px;
  height: 18px;
  color: var(--color-primary);
  display: none;
}

.lang-item.is-selected {
  border: 2px solid var(--color-primary);
  background: var(--color-primary-light);
}

.lang-item.is-selected .check-icon {
  display: block;
}

.settings-section.about {
  text-align: center;
  margin-top: 32px;
  color: var(--color-text-tertiary);
  font-size: 13px;
}

.settings-section.about .tiny {
  font-size: 11px;
  margin-top: 4px;
  opacity: 0.7;
}

/* Onboarding Styles */
.onboarding-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 5000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
  color: white;
  transition: opacity 0.3s ease;
}

.onboarding-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  width: 100%;
  max-width: 320px;
  box-shadow: none;
  color: var(--color-text-primary);
}

.onboarding-card h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.onboarding-card p {
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 24px;
  color: var(--color-text-secondary);
}

.onboarding-btn {
  width: 100%;
  height: 52px;
  background: var(--color-primary);
  color: var(--color-pear-black);
  border: none;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.onboarding-btn:active {
  transform: scale(0.98);
}

.spotlight-mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 4999;
  background: rgba(0, 0, 0, 0.7);
  mask-image: radial-gradient(circle at var(--x) var(--y), transparent var(--r), black var(--r));
  -webkit-mask-image: -webkit-radial-gradient(circle at var(--x) var(--y), transparent var(--r), black var(--r));
}

.onboarding-hint {
  position: absolute;
  background: var(--color-surface);
  padding: 16px;
  border-radius: var(--radius-md);
  width: calc(100% - 40px);
  max-width: 300px;
  box-shadow: none;
  z-index: 5001;
  color: var(--color-text-primary);
  pointer-events: auto;
  text-align: center;
}

.onboarding-hint h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.onboarding-hint p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.onboarding-hint.top {
  bottom: calc(100% - var(--y) + var(--r) + 20px);
}

.onboarding-hint.bottom {
  top: calc(var(--y) + var(--r) + 20px);
}