/* Modern Minimalistic Task Manager - Dark Mode */

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

:root {
  /* Pure Black Dark Mode Color Palette - Matching Homepage */
  --color-primary: #00FFFF;
  --color-primary-hover: #00CCCC;
  --color-primary-light: #33FFFF;
  --color-success: #00FFFF;
  --color-warning: #FFAA00;
  --color-danger: #FF0000;
  --color-text: rgba(0, 255, 255, 0.95);
  --color-text-light: rgba(0, 255, 255, 0.7);
  --color-text-lighter: rgba(0, 255, 255, 0.5);
  --color-bg: #000000;
  --color-bg-secondary: #0a0a0a;
  --color-bg-tertiary: #1a1a1a;
  --color-border: rgba(0, 255, 255, 0.15);
  --color-border-hover: rgba(0, 255, 255, 0.4);
  --color-shadow: rgba(0, 0, 0, 0.8);
  --color-shadow-hover: rgba(0, 0, 0, 0.9);
  --color-glow: rgba(0, 255, 255, 0.3);
  --color-glow-strong: rgba(0, 255, 255, 0.6);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  
  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header */
header {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(0, 0, 0, 0.9);
}

header nav {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

header nav button {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text);
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  min-height: 44px;
  letter-spacing: 0.02em;
}

header nav button:hover,
header nav button:focus {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-bg-secondary);
  outline: none;
  box-shadow: 0 1px 3px var(--color-shadow);
}

header nav button:active {
  transform: translateY(1px);
}

/* Main Content */
main {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* Quick Action Bar - Pomodoro Wizard */
.quick-action-bar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px var(--color-shadow);
  align-items: center;
}

.pomodoro-wizard {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-sm);
  align-items: center;
}

.pomodoro-wizard input {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.pomodoro-wizard input::placeholder {
  color: var(--color-text-lighter);
}

.pomodoro-wizard input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  background: var(--color-bg-secondary);
}

.pomodoro-wizard button {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.875rem 1.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border-radius: var(--radius-sm);
  text-shadow: 0 0 10px var(--color-glow);
  box-shadow: 0 0 12px var(--color-glow), inset 0 0 8px rgba(0, 255, 255, 0.1);
  min-height: 48px;
  letter-spacing: 0.05em;
}

.pomodoro-wizard button:hover,
.pomodoro-wizard button:focus,
.pomodoro-wizard button:hover {
  background: rgba(0, 255, 255, 0.15);
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
  outline: none;
  box-shadow: 0 0 20px var(--color-glow-strong), inset 0 0 12px rgba(0, 255, 255, 0.2);
  text-shadow: 0 0 15px var(--color-glow-strong);
}

.pomodoro-wizard button:active {
  transform: translateY(1px);
}

/* Active Pomodoro Display */
.active-pomodoro {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--spacing-lg);
  align-items: center;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px var(--color-shadow);
}

.pomodoro-timer {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  min-width: 100px;
}

.pomodoro-info {
  display: grid;
  gap: var(--spacing-xs);
}

.pomodoro-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.pomodoro-phase {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-family: var(--font-mono);
}

.pomodoro-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.pomodoro-controls button {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text);
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border-radius: var(--radius-sm);
  min-height: 44px;
  letter-spacing: 0.02em;
}

.pomodoro-controls button:hover,
.pomodoro-controls button:focus {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-bg-secondary);
  outline: none;
}

.pomodoro-controls button.stop {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.pomodoro-controls button.stop:hover {
  background: rgba(255, 0, 0, 0.15);
  border-color: #ff3333;
  color: #ff6666;
  box-shadow: 0 0 15px rgba(255, 0, 0, 0.4);
}

/* Tabs */
.tabContainer {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: var(--spacing-sm);
  height: 100%;
  min-height: 0;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 1px 3px var(--color-shadow);
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-tertiary);
}

.tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-light);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  flex: 1;
  text-align: center;
}

.tab:hover {
  color: var(--color-text);
  background: var(--color-bg-secondary);
}

.tab.checked {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: var(--color-bg-secondary);
}

.tabContainer input[type='radio'] {
  display: none;
}

.panel {
  display: none;
  height: 100%;
  min-height: 0;
  overflow: auto;
  background: var(--color-bg);
}

.tabContainer input[type='radio']:checked + .panel {
  display: grid;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }
  
  header nav {
    grid-template-columns: 1fr;
  }
  
  .quick-action-bar {
    grid-template-columns: 1fr;
  }
  
  .pomodoro-wizard {
    grid-template-columns: 1fr;
  }
  
  .active-pomodoro {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .pomodoro-timer {
    font-size: 1.5rem;
  }
  
  .pomodoro-controls {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  main {
    padding: var(--spacing-sm);
  }
  
  .pomodoro-timer {
    font-size: 1.25rem;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard navigation */
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}