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

.timers-container {
  background-color: #f5f5f5;
  min-height: 100vh;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.page-header {
  background-color: #ffffff;
  padding: 16px 16px;
  border-bottom: 1px solid #e0e0e0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.page-header h1 {
  font-size: 32px;
  font-weight: 400;
  color: #212121;
  letter-spacing: -0.5px;
}

.timers-list {
  padding: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.loading,
.error-message,
.empty-state {
  background-color: #ffffff;
  border-radius: 4px;
  padding: 24px;
  text-align: center;
  margin-bottom: 16px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.loading p,
.empty-state p {
  color: #666;
  font-size: 14px;
}

.error-message {
  background-color: #ffebee;
  border-left: 4px solid #f44336;
}

.error-message p {
  color: #c62828;
}

.timer-cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timer-card {
  background-color: #ffffff;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timer-card:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.timer-card.expanded {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.card-header {
  display: flex;
  align-items: center;
  padding: 16px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s ease;
}

.card-header:hover {
  background-color: #fafafa;
}

.timer-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  margin-right: 16px;
  color: #1976d2;
  font-size: 24px;
}

.timer-info {
  flex: 1;
}

.timer-title {
  font-size: 16px;
  font-weight: 500;
  color: #212121;
  margin: 0 0 4px 0;
  line-height: 1.4;
}

.timer-subtitle {
  font-size: 13px;
  color: #757575;
  margin: 0;
  line-height: 1.4;
}

.expand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: #999;
  font-size: 24px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.timer-card.expanded .expand-icon {
  transform: rotate(180deg);
}

.card-content {
  border-top: 1px solid #e0e0e0;
  padding: 16px;
  background-color: #fafafa;
  animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
  }
  to {
    opacity: 1;
    max-height: 500px;
  }
}

.timer-details {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e0e0e0;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  font-size: 14px;
}

.detail-label {
  color: #666;
  font-weight: 500;
}

.detail-value {
  color: #212121;
  font-weight: 400;
}

.card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 12px;
  border: none;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  min-height: 36px;
}

.btn ion-icon {
  font-size: 18px;
}

.btn-primary {
  background-color: #1976d2;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #1565c0;
  box-shadow: 0 4px 8px rgba(25, 118, 210, 0.3);
}

.btn-primary:active {
  background-color: #0d47a1;
}

.btn-secondary {
  background-color: #e0e0e0;
  color: #212121;
}

.btn-secondary:hover {
  background-color: #d0d0d0;
}

.btn-secondary:active {
  background-color: #c0c0c0;
}

.btn-danger {
  background-color: #fff3e0;
  color: #e65100;
}

.btn-danger:hover {
  background-color: #ffe0b2;
}

.btn-danger:active {
  background-color: #ffcc80;
}

@media (max-width: 600px) {
  .page-header {
    padding: 12px 16px;
  }
  .page-header h1 {
    font-size: 24px;
  }
  .timers-list {
    padding: 8px;
  }
  .card-header {
    padding: 12px;
  }
  .timer-icon {
    width: 36px;
    height: 36px;
    margin-right: 12px;
  }
  .card-content {
    padding: 12px;
  }
  .card-actions {
    grid-template-columns: 1fr 1fr;
  }
  .btn {
    padding: 8px 10px;
    font-size: 12px;
  }
}