/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors */
  --color-background: #fafafa;
  --color-foreground: #171717;
  --color-card: #ffffff;
  --color-card-foreground: #171717;
  --color-primary: #8b5cf6;
  --color-primary-foreground: #ffffff;
  --color-secondary: #f5f5f5;
  --color-secondary-foreground: #171717;
  --color-accent: #10b981;
  --color-muted: #f5f5f5;
  --color-muted-foreground: #737373;
  --color-border: #e5e5e5;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;

  /* Border Radius */
  --radius: 0.5rem;
  --radius-lg: 0.75rem;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.app-container {
  max-width: 28rem;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Timeline Styles */
.timeline-container {
  position: sticky;
  top: 0;
  z-index: 10;
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding-top: var(--spacing-3);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  min-height: 1.5rem;
}

.timeline-month-year {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-foreground);
  text-align: center;
}

.timeline-weeks {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.today-btn {
  position: absolute;
  right: 0;
  background-color: var(--color-primary);
  color: var(--color-primary-foreground);
  border: none;
  border-radius: var(--radius);
  padding: var(--spacing-1) var(--spacing-3);
  margin-right: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.today-btn:hover {
  background-color: #7c3aed;
}

.timeline-scroll-container {
  flex: 1;
  overflow-x: scroll;
  overflow-y: visible;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x;
}

.timeline-scroll-container::-webkit-scrollbar {
  display: none;
}

.timeline-track {
  display: inline-flex;
  gap: var(--spacing-2);
  padding: 0 50%;
  padding-bottom: var(--spacing-4);
  overflow: visible;
  white-space: nowrap;
}

/* Updated timeline week to be circular with progress indicators */
.timeline-week {
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  background-color: var(--color-card);
  color: var(--color-foreground);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 3px solid var(--color-border);
  margin-top: 0.5rem; /* Space for the checkmark that pops out */
}

/* Progress ring for current week only */
.timeline-week.current-week::before {
  content: "";
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: 50%;
  background: conic-gradient(var(--color-accent) calc(var(--progress) * 1%), var(--color-border) 0);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  padding: 3px;
  transition: all 0.3s;
  z-index: 1;
}

/* Checkmark for past weeks (shown below the week number, inside the circle) */
.timeline-week-check {
  font-size: 0.65rem;
  margin-top: 0.1rem;
  display: none;
  color: inherit;
}

.timeline-week.past-week .timeline-week-check {
  display: block;
}

/* Dimmed text for past weeks - match border color */
.timeline-week.past-week {
  color: var(--color-border);
  border-color: var(--color-border);
}

.timeline-week:hover {
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.timeline-week.active {
  background-color: var(--color-primary);
  color: var(--color-primary-foreground);
  border-color: var(--color-primary);
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.timeline-week.active.current-week::before {
  background: conic-gradient(white calc(var(--progress) * 1%), rgba(255,255,255,0.3) 0);
}

/* Special styling for "This Week" text */
.timeline-week-label {
  font-size: 0.7rem;
  text-align: center;
  line-height: 1.1;
  max-width: 80%;
}

.timeline-week-number {
  font-size: 1rem;
  line-height: 1;
}

/* Habits Container */
.habits-container {
  flex: 1;
  padding: var(--spacing-4);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

/* Day Section */
.day-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.day-header {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted-foreground);
}

/* Habit Card */
.habit-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3);
  display: flex;
  gap: var(--spacing-3);
  transition: all 0.2s;
}

.habit-card.completed {
  opacity: 0.6;
  border-color: var(--color-accent);
}

.habit-card.rest-day {
  background: linear-gradient(135deg, #fef3c7 0%, #dbeafe 100%);
  border-color: #fcd34d;
}

.habit-checkbox-container {
  flex-shrink: 0;
  padding-top: var(--spacing-1);
}

.habit-checkbox-form {
  margin: 0;
}

.habit-checkbox {
  all: unset;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-card);
  transition: all 0.2s;
  box-sizing: border-box;
}

.habit-checkbox:hover {
  border-color: var(--color-primary);
}

.habit-checkbox.checked {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.habit-checkbox svg {
  display: none;
  color: white;
}

.habit-checkbox.checked svg {
  display: block;
}

.habit-content {
  flex: 1;
  min-width: 0;
}

.habit-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-card-foreground);
}

.habit-description {
  font-size: 0.75rem;
  color: var(--color-muted-foreground);
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rest-day-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 0.875rem;
  color: #92400e;
  font-weight: 500;
}

.habit-actions {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.postpone-btn {
  padding: var(--spacing-2) var(--spacing-3);
  background-color: var(--color-secondary);
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-secondary-foreground);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-sans);
}

.postpone-btn:hover:not(:disabled) {
  background-color: var(--color-muted);
}

.postpone-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Login Form */
.login-container {
  max-width: 400px;
  margin: 2rem auto;
  background: var(--color-card);
  padding: var(--spacing-8);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.login-container h2 {
  margin-bottom: var(--spacing-6);
  color: var(--color-foreground);
  text-align: center;
}

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-2);
  color: var(--color-foreground);
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: var(--spacing-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font-sans);
}

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

.error {
  background-color: #ef4444;
  color: white;
  padding: var(--spacing-4);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-4);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-family: var(--font-sans);
  width: 100%;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-foreground);
}

.btn-primary:hover {
  background-color: #7c3aed;
}

/* Mobile Optimization */
/*@media (max-width: 640px) {
  .app-container {
    max-width: 100%;
  }

  .timeline-container {
    padding: var(--spacing-3);
  }

  .habits-container {
    padding: var(--spacing-3);
  }
}*/

/* Loading State */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-8);
  color: var(--color-muted-foreground);
}