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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

header {
  text-align: center;
  color: white;
  margin-bottom: 30px;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

.subtitle {
  opacity: 0.9;
  font-size: 1.1rem;
}

.card {
  background: white;
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
}

.card h2 {
  color: #333;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.form-row {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.form-group.flex-grow {
  flex: 2;
}

.form-group label {
  font-size: 0.9rem;
  color: #555;
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group select {
  padding: 12px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  width: 100%;
}

.btn-secondary {
  background: #f0f0f0;
  color: #333;
}

.btn-success {
  background: #10b981;
  color: white;
}

.btn-danger {
  background: #ef4444;
  color: white;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.result-box {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 12px;
  padding: 20px;
  margin-top: 20px;
  color: white;
}

.result-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

.result-item:last-child {
  border-bottom: none;
}

.result-item.highlight {
  font-size: 1.2rem;
  font-weight: bold;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 2px solid rgba(255,255,255,0.3);
}

.result-label {
  opacity: 0.9;
}

.result-value {
  font-weight: 600;
}

.stats-row {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  background: #f8f9fa;
  padding: 16px;
  border-radius: 12px;
}

.stat-item {
  flex: 1;
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: bold;
  color: #667eea;
}

.filter-row {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-date {
  padding: 10px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 0.95rem;
}

.entries-list {
  max-height: 400px;
  overflow-y: auto;
}

.entry-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px;
  background: #f8f9fa;
  border-radius: 8px;
  margin-bottom: 10px;
  transition: background 0.2s;
}

.entry-item:hover {
  background: #f0f0f0;
}

.entry-info {
  flex: 1;
}

.entry-name {
  font-weight: 600;
  color: #333;
  margin-bottom: 4px;
}

.entry-details {
  font-size: 0.85rem;
  color: #666;
}

.entry-macros {
  font-size: 0.8rem;
  color: #888;
  margin-top: 4px;
}

.entry-calories {
  font-weight: bold;
  color: #667eea;
  margin-right: 12px;
  font-size: 1.1rem;
}

.entry-date {
  font-size: 0.85rem;
  color: #999;
  margin-right: 12px;
}

.empty-state {
  text-align: center;
  padding: 40px;
  color: #999;
}

@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
  }
  
  .stats-row {
    flex-direction: column;
  }
  
  header h1 {
    font-size: 1.8rem;
  }
}