.datetime-picker {
  position: relative;
  width: 100%;
}

.datetime-display {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: white;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 48px;
}

.datetime-display:hover {
  border-color: #9ca3af;
}

.datetime-display:focus-within,
.datetime-display:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.display-text {
  flex: 1;
  color: #374151;
  font-size: 14px;
}

.display-text.placeholder {
  color: #9ca3af;
}

.clear-btn {
  background: none;
  border: none;
  color: #9ca3af;
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.clear-btn:hover {
  background: #f3f4f6;
  color: #6b7280;
}

.datetime-picker-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.1);
  z-index: 10;
  pointer-events: auto;
}

.datetime-picker-panel {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  z-index: 20;
  margin-top: 4px;
  padding: 20px;
  min-width: 320px;
  max-height: 500px;
  height: auto;
  min-height: 400px;
  overflow-y: auto;
}

.picker-section {
  margin-bottom: 24px;
}

.picker-section:last-of-type {
  margin-bottom: 16px;
}

.picker-section h4 {
  margin: 0 0 12px 0;
  color: #374151;
  font-size: 14px;
  font-weight: 600;
}

.quick-date-options,
.quick-time-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.quick-time-options {
  grid-template-columns: repeat(4, 1fr);
}

.quick-option {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.quick-option:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.quick-option.selected {
  background: #667eea;
  border-color: #667eea;
  color: white;
}

.custom-date-input,
.custom-time-input {
  display: flex;
  align-items: center;
  gap: 8px;
}

.custom-time-input {
  background: #f8fafc;
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

.date-input,
.time-input {
  border: 1px solid #d1d5db;
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 14px;
  background: white;
  transition: all 0.2s ease;
  flex: 1;
}

.time-input {
  border: none;
  background: transparent;
  flex: 1;
}

.date-input:focus,
.time-input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.time-input:focus {
  box-shadow: none;
}

.picker-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid #e5e7eb;
}

.action-btn {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.action-btn.cancel {
  background: #f8fafc;
  color: #6b7280;
  border-color: #d1d5db;
}

.action-btn.cancel:hover {
  background: #f1f5f9;
  border-color: #9ca3af;
}

.action-btn.confirm {
  background: #667eea;
  color: white;
}

.action-btn.confirm:hover {
  background: #5a67d8;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .datetime-picker-panel {
    min-width: 280px;
    padding: 16px;
  }
  
  .quick-date-options {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .quick-time-options {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .picker-actions {
    flex-direction: column;
    gap: 8px;
  }
  
  .action-btn {
    width: 100%;
    text-align: center;
  }
}

/* 改进输入框在Safari中的显示 */
.date-input::-webkit-calendar-picker-indicator,
.time-input::-webkit-calendar-picker-indicator {
  background: transparent;
  color: #6b7280;
  cursor: pointer;
}

.date-input::-webkit-calendar-picker-indicator:hover,
.time-input::-webkit-calendar-picker-indicator:hover {
  background: #f3f4f6;
  border-radius: 4px;
}