/* Page Layout */

body {
  background: var(--color-bg-primary, #0E0E0E);
  color: var(--color-text-primary, #F9FAFB);
}

.page-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl, 2rem);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl, 2rem);
  align-items: start;
}

@media (max-width: 768px) {
  .page-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg, 1.5rem);
  }
}

.page-info {
  position: sticky;
  top: var(--spacing-xl, 2rem);
}

.page-title {
  font-size: var(--font-size-2xl, 1.5rem);
  font-weight: 700;
  color: var(--color-text-primary, #F9FAFB);
  margin-bottom: var(--spacing-xs, 0.5rem);
}

.page-subtitle {
  font-size: var(--font-size-md, 1rem);
  color: var(--color-text-secondary, #9CA3AF);
  margin-bottom: var(--spacing-md, 1rem);
}

.page-description {
  font-size: var(--font-size-sm, 0.875rem);
  line-height: 1.6;
  color: var(--color-text-secondary, #9CA3AF);
  margin-bottom: var(--spacing-lg, 1.5rem);
}

.back-link {
  display: inline-block;
  color: var(--color-interactive-primary, #22C55E);
  text-decoration: none;
  font-size: var(--font-size-sm, 0.875rem);
  transition: opacity 0.2s;
}

.back-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.mockup-container {
  display: flex;
  justify-content: center;
  padding: var(--spacing-lg, 1.5rem) 0;
}

/* App Header */

.app-header {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md, 1rem);
  border-bottom: 1px solid var(--color-border-default, #262626);
  flex-shrink: 0;
}

.app-title {
  font-size: var(--font-size-xl, 1.25rem);
  font-weight: 700;
  color: var(--color-text-primary, #F9FAFB);
}

.app-add-btn {
  width: 36px;
  height: 36px;
  background: var(--color-interactive-primary, #22C55E);
  color: #000;
  font-size: 1.5rem;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 300;
  line-height: 1;
}

.app-add-btn:hover {
  transform: scale(1.05);
}

.app-add-btn:active {
  transform: scale(0.95);
}

/* Habit List */

.habit-list {
  flex: 1;
  overflow-y: auto;
}

.habit-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: var(--spacing-md, 1rem);
  border-bottom: 1px solid var(--color-border-default, #262626);
  cursor: pointer;
  transition: background 0.2s;
}

.habit-item:hover,
.habit-item:active {
  background: var(--color-bg-secondary, #1A1A1A);
}

.habit-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-right: var(--spacing-md, 1rem);
  flex-shrink: 0;
}

.habit-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs, 0.5rem);
}

.habit-name {
  font-size: var(--font-size-md, 1rem);
  color: var(--color-text-primary, #F9FAFB);
  font-weight: 500;
}

.habit-streak {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-text-secondary, #9CA3AF);
}

.habit-check {
  width: 28px;
  height: 28px;
  border: 2px solid var(--color-border-default, #262626);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
  background: transparent;
  cursor: pointer;
}

.habit-check:hover {
  border-color: var(--color-interactive-primary, #22C55E);
}

.habit-check.completed {
  background: var(--color-interactive-primary, #22C55E);
  border-color: var(--color-interactive-primary, #22C55E);
}

.habit-check.completed::after {
  content: '✓';
  color: #000;
  font-size: 0.875rem;
  font-weight: bold;
}

/* Color Classes */

.habit-color-green {
  background: #22C55E;
}

.habit-color-blue {
  background: #3A82FF;
}

.habit-color-orange {
  background: #F97316;
}

.habit-color-purple {
  background: #A855F7;
}

.habit-color-red {
  background: #EF4444;
}

.habit-color-yellow {
  background: #EAB308;
}

/* Empty State */

.empty-state {
  display: none;
  text-align: center;
  padding-top: 40%;
  color: var(--color-text-muted, #6B7280);
  font-size: var(--font-size-sm, 0.875rem);
}

.empty-state.visible {
  display: block;
}

/* Modal */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-overlay[hidden] {
  display: none;
}

.modal-content {
  background: var(--color-bg-secondary, #1A1A1A);
  border-radius: var(--border-radius-lg, 12px);
  padding: var(--spacing-lg, 1.5rem);
  max-width: 400px;
  width: 90%;
  border: 1px solid var(--color-border-default, #262626);
}

.modal-content h2 {
  font-size: var(--font-size-xl, 1.25rem);
  color: var(--color-text-primary, #F9FAFB);
  margin-bottom: var(--spacing-md, 1rem);
}

.modal-content input {
  width: 100%;
  padding: var(--spacing-sm, 0.75rem);
  background: var(--color-bg-primary, #0E0E0E);
  border: 1px solid var(--color-border-default, #262626);
  border-radius: var(--border-radius-md, 8px);
  color: var(--color-text-primary, #F9FAFB);
  font-size: var(--font-size-md, 1rem);
  margin-bottom: var(--spacing-md, 1rem);
}

.modal-content input:focus {
  outline: 2px solid var(--color-interactive-primary, #22C55E);
  outline-offset: 2px;
}

.icon-picker,
.color-picker {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-sm, 0.75rem);
  margin-bottom: var(--spacing-md, 1rem);
}

.icon-choice,
.color-choice {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s;
  background: var(--color-bg-primary, #0E0E0E);
}

.icon-choice:hover,
.color-choice:hover {
  border-color: var(--color-text-muted, #6B7280);
}

.icon-choice.selected,
.color-choice.selected {
  border-color: var(--color-interactive-primary, #22C55E);
  transform: scale(1.1);
}

.color-choice {
  border-width: 3px;
}

.modal-actions {
  display: flex;
  gap: var(--spacing-sm, 0.75rem);
  margin-top: var(--spacing-lg, 1.5rem);
}

.modal-actions button {
  flex: 1;
  padding: var(--spacing-sm, 0.75rem);
  border-radius: var(--border-radius-md, 8px);
  font-size: var(--font-size-md, 1rem);
  cursor: pointer;
  transition: opacity 0.2s;
  border: none;
}

.modal-cancel {
  background: var(--color-bg-primary, #0E0E0E);
  color: var(--color-text-primary, #F9FAFB);
  border: 1px solid var(--color-border-default, #262626);
}

.modal-save {
  background: var(--color-interactive-primary, #22C55E);
  color: #000;
  font-weight: 600;
}

.modal-save:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.modal-save:not(:disabled):hover {
  opacity: 0.9;
}

/* Detail View */

.detail-view {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-primary, #0E0E0E);
  z-index: 10;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.detail-view[hidden] {
  display: none;
}

.detail-back {
  padding: var(--spacing-md, 1rem);
  background: transparent;
  border: none;
  color: var(--color-interactive-primary, #22C55E);
  font-size: var(--font-size-md, 1rem);
  cursor: pointer;
  text-align: left;
}

.detail-header {
  padding: var(--spacing-lg, 1.5rem);
  text-align: center;
  border-bottom: 1px solid var(--color-border-default, #262626);
}

.detail-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto var(--spacing-md, 1rem);
}

.detail-name {
  font-size: var(--font-size-xl, 1.25rem);
  font-weight: 600;
  color: var(--color-text-primary, #F9FAFB);
}

.detail-streaks {
  padding: var(--spacing-lg, 1.5rem);
  display: flex;
  gap: var(--spacing-md, 1rem);
  justify-content: center;
}

.streak-badge {
  text-align: center;
  padding: var(--spacing-md, 1rem);
  background: var(--color-bg-secondary, #1A1A1A);
  border-radius: var(--border-radius-md, 8px);
  flex: 1;
}

.streak-value {
  font-size: var(--font-size-2xl, 1.5rem);
  font-weight: 700;
  color: var(--color-interactive-primary, #22C55E);
  display: block;
  margin-bottom: var(--spacing-xs, 0.5rem);
}

.streak-label {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-text-secondary, #9CA3AF);
}

.detail-chart {
  padding: var(--spacing-lg, 1.5rem);
}

.detail-delete {
  margin: var(--spacing-lg, 1.5rem);
  padding: var(--spacing-sm, 0.75rem);
  background: var(--color-bg-secondary, #1A1A1A);
  border: 1px solid var(--color-border-default, #262626);
  border-radius: var(--border-radius-md, 8px);
  color: #EF4444;
  font-size: var(--font-size-md, 1rem);
  cursor: pointer;
}

.detail-delete:hover {
  background: rgba(239, 68, 68, 0.1);
}

/* Chart Section */

.chart-section {
  max-width: 800px;
  margin: var(--spacing-xl, 2rem) auto;
  padding: var(--spacing-lg, 1.5rem);
  background: var(--color-bg-secondary, #1A1A1A);
  border-radius: var(--border-radius-lg, 12px);
  border: 1px solid var(--color-border-default, #262626);
}

.chart-section canvas {
  max-height: 250px;
}

.chart-section h3 {
  font-size: var(--font-size-lg, 1.125rem);
  color: var(--color-text-primary, #F9FAFB);
  margin-bottom: var(--spacing-md, 1rem);
}

@media (max-width: 768px) {
  .chart-section {
    margin-top: var(--spacing-md, 1rem);
  }
}