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

:root {
  --primary: #10b981;
  --primary-light: #d1fae5;
  --primary-dark: #059669;
  --secondary: #6366f1;
  --warning: #f59e0b;
  --danger: #ef4444;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #f0fdfa 100%);
  min-height: 100vh;
  color: var(--gray-800);
  line-height: 1.6;
}

.app-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 100px;
}

/* Header */
.header {
  text-align: center;
  padding: 24px 0;
}

.header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.header .date {
  color: var(--gray-500);
  font-size: 0.95rem;
}

/* Tab Navigation */
.tab-nav {
  display: flex;
  gap: 8px;
  background: var(--gray-100);
  padding: 6px;
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.tab-btn {
  flex: 1;
  padding: 10px 16px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn.active {
  background: white;
  color: var(--primary-dark);
  box-shadow: var(--shadow);
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Time Input */
.time-input {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.time-input label {
  font-weight: 500;
  color: var(--gray-700);
  min-width: 100px;
}

.time-input input[type="time"] {
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 1rem;
  color: var(--gray-800);
  background: var(--gray-50);
}

.time-input .target {
  font-size: 0.85rem;
  color: var(--gray-400);
}

/* Checklist */
.checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--gray-50);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.check-item:hover {
  background: var(--gray-100);
}

.check-item input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 24px;
  height: 24px;
  border: 2px solid var(--gray-300);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
}

.check-item input:checked + .checkmark {
  background: var(--primary);
  border-color: var(--primary);
}

.check-item input:checked + .checkmark::after {
  content: '✓';
  color: white;
  font-weight: 600;
  font-size: 14px;
}

.check-item .label {
  font-size: 0.95rem;
  color: var(--gray-700);
}

.check-item.negative .label {
  color: var(--gray-600);
}

.check-item input:checked ~ .label {
  color: var(--primary-dark);
}

/* Exercise Input */
.exercise-input,
.duration-input {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.exercise-input label,
.duration-input label {
  font-weight: 500;
  color: var(--gray-700);
  min-width: 80px;
}

.exercise-input select,
.duration-input input[type="number"] {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 1rem;
  color: var(--gray-800);
  background: var(--gray-50);
  min-width: 150px;
}

.duration-input .unit {
  color: var(--gray-500);
  font-size: 0.9rem;
}

/* Save Button */
.save-btn {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 16px;
  transition: all 0.2s;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.save-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.save-btn:active {
  transform: translateY(0);
}

/* Score Card */
.score-card {
  text-align: center;
  background: linear-gradient(135deg, var(--primary-light) 0%, #a7f3d0 100%);
}

.score-display {
  margin-bottom: 12px;
}

.score-display .score {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.score-display .total {
  font-size: 1.5rem;
  color: var(--gray-500);
}

.score-bar {
  height: 12px;
  background: rgba(255,255,255,0.5);
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 12px;
}

.score-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 6px;
  transition: width 0.5s ease;
}

.score-message {
  font-size: 1rem;
  color: var(--gray-700);
  font-weight: 500;
}

/* Progress List */
.progress-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.progress-item {
  background: var(--gray-50);
  padding: 14px;
  border-radius: 8px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.exercise-name {
  font-weight: 500;
  color: var(--gray-700);
}

.progress-text {
  font-size: 0.9rem;
  color: var(--gray-500);
}

.progress-bar {
  height: 8px;
  background: var(--gray-200);
  border-radius: 4px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 4px;
  transition: width 0.5s ease;
}

/* Summary Grid */
.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.summary-item {
  background: var(--gray-50);
  padding: 14px;
  border-radius: 8px;
  text-align: center;
}

.summary-item.total {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--primary-light) 0%, #a7f3d0 100%);
}

.summary-label {
  display: block;
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.summary-value {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 4px;
}

.summary-status {
  font-size: 1.2rem;
}

/* Week Calendar */
.week-calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.day-cell {
  text-align: center;
  padding: 12px 8px;
  border-radius: 8px;
  background: var(--gray-50);
}

.day-cell.today {
  background: var(--primary-light);
  border: 2px solid var(--primary);
}

.day-cell.completed {
  background: var(--primary);
  color: white;
}

.day-name {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: 4px;
}

.day-cell.completed .day-name {
  color: rgba(255,255,255,0.8);
}

.day-number {
  font-size: 1.1rem;
  font-weight: 600;
}

.day-status {
  font-size: 0.9rem;
  margin-top: 4px;
}

/* Goals */
.goals-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.goal-item {
  background: var(--gray-50);
  padding: 16px;
  border-radius: 8px;
}

.goal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.goal-name {
  font-weight: 600;
  color: var(--gray-800);
}

.goal-target {
  font-size: 0.9rem;
  color: var(--primary-dark);
  font-weight: 500;
}

.goal-desc {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.goal-bar {
  height: 6px;
  background: var(--gray-200);
  border-radius: 3px;
  overflow: hidden;
}

.goal-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
}

/* Goals Table */
.goals-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.goals-table th,
.goals-table td {
  padding: 12px 8px;
  text-align: left;
  border-bottom: 1px solid var(--gray-100);
}

.goals-table th {
  font-weight: 600;
  color: var(--gray-600);
  font-size: 0.8rem;
  text-transform: uppercase;
}

.goals-table .total-row {
  background: var(--primary-light);
}

/* Avoid List */
.avoid-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.avoid-item {
  padding: 12px 16px;
  background: #fef2f2;
  border-left: 4px solid var(--danger);
  border-radius: 0 8px 8px 0;
  color: var(--gray-700);
  font-size: 0.95rem;
}

/* Week Label */
.week-label {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

/* Footer */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--gray-400);
  font-size: 0.85rem;
}

.footer p {
  margin-bottom: 4px;
}

.version {
  font-size: 0.75rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-800);
  color: white;
  padding: 14px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
}

/* Responsive */
@media (max-width: 400px) {
  .app-container {
    padding: 12px;
  }
  
  .header h1 {
    font-size: 1.5rem;
  }
  
  .tab-btn {
    padding: 8px 12px;
    font-size: 0.85rem;
  }
  
  .card {
    padding: 16px;
  }
  
  .summary-grid {
    grid-template-columns: 1fr;
  }
  
  .summary-item.total {
    grid-column: span 1;
  }
}