body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  transition: background-color 0.3s, color 0.3s;
}

body.dark {
  background: #181c1f;
  color: #f0f0f0;
}

body.light-mode {
  background: #f0f0f0;
  color: #222;
}

.container {
  margin-top: 60px;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #d32f2f;
  font-size: 2.5em;
}

body.dark h1 {
  color: #ef5350;
}

.section {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body.dark .section {
  background: #23272a;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

h2 {
  margin-top: 0;
  margin-bottom: 15px;
  color: #1976d2;
  font-size: 1.3em;
}

body.dark h2 {
  color: #90caf9;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 15px;
}

.stats {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.stat-label {
  color: #666;
  font-weight: 600;
}

body.dark .stat-label {
  color: #aaa;
}

.stat-value {
  font-size: 1.2em;
  font-weight: bold;
  color: #1976d2;
}

body.dark .stat-value {
  color: #90caf9;
}

.input-group {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.input-group input {
  flex: 1;
  min-width: 150px;
  padding: 10px;
  border: 2px solid #ddd;
  border-radius: 8px;
  font-size: 1em;
  transition: border-color 0.2s;
}

.input-group input:focus {
  outline: none;
  border-color: #1976d2;
}

body.dark .input-group input {
  background: #2c2f33;
  border-color: #444;
  color: #f0f0f0;
}

body.dark .input-group input:focus {
  border-color: #90caf9;
}

#addBtn {
  padding: 10px 20px;
  background: #4caf50;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

#addBtn:hover {
  background: #45a049;
  transform: translateY(-2px);
}

.gift-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gift-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  background: #f5f5f5;
  border-radius: 8px;
  border-left: 4px solid #1976d2;
  transition: opacity 0.2s;
}

body.dark .gift-item {
  background: #2c2f33;
  border-left-color: #90caf9;
}

.gift-item.purchased {
  opacity: 0.6;
  border-left-color: #4caf50;
}

.gift-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex: 1;
  gap: 15px;
}

.gift-info {
  flex: 1;
}

.gift-recipient {
  font-weight: bold;
  font-size: 1.1em;
  color: #1976d2;
  margin-bottom: 5px;
}

body.dark .gift-recipient {
  color: #90caf9;
}

.gift-name {
  color: #666;
  font-size: 0.95em;
}

body.dark .gift-name {
  color: #aaa;
}

.gift-budget {
  font-weight: bold;
  font-size: 1.1em;
  color: #d32f2f;
  white-space: nowrap;
}

body.dark .gift-budget {
  color: #ef5350;
}

.gift-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 8px;
  font-size: 1.2em;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.toggle-btn {
  background: #4caf50;
  color: white;
}

.toggle-btn:hover {
  background: #45a049;
  transform: scale(1.1);
}

.toggle-btn.purchased {
  background: #66bb6a;
}

.delete-btn {
  background: #f44336;
  color: white;
}

.delete-btn:hover {
  background: #d32f2f;
  transform: scale(1.1);
}

.action-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.export-btn,
.clear-btn {
  flex: 1;
  min-width: 150px;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-size: 1em;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  color: white;
}

.export-btn {
  background: #2196f3;
}

.export-btn:hover {
  background: #1976d2;
  transform: translateY(-2px);
}

.clear-btn {
  background: #f44336;
}

.clear-btn:hover {
  background: #d32f2f;
  transform: translateY(-2px);
}

.empty-text {
  text-align: center;
  color: #999;
  font-style: italic;
  padding: 40px 20px;
}

body.dark .empty-text {
  color: #666;
}

@media (max-width: 600px) {
  .input-group {
    flex-direction: column;
  }

  .input-group input,
  #addBtn {
    width: 100%;
  }

  .gift-main {
    flex-direction: column;
    align-items: flex-start;
  }

  .action-buttons {
    flex-direction: column;
  }

  .export-btn,
  .clear-btn {
    width: 100%;
  }
}