<template>
  <div class="runoff-container">
    <el-card class="gradient-card" shadow="hover">
      <el-row :gutter="20">
        <el-col :span="24">
          <p class="label">地表径流(g/ha/a)</p>
        </el-col>
        <el-col :span="24">
          <el-input
            v-model="runoff"
            placeholder="请输入"
            class="custom-input"
          />
        </el-col>
        <el-col :span="24" style="margin-top: 20px;">
          <el-button class="calculate-btn" @click="onCalculate">计算</el-button>
        </el-col>
      </el-row>
    </el-card>
  </div>
</template>

<script setup>
import { ref } from 'vue';
import { ElCard, ElRow, ElCol, ElInput, ElButton } from 'element-plus';

const runoff = ref('0.368');

const onCalculate = () => {
  // 暂无计算逻辑，仅作展示
  alert('计算按钮已点击');
};
</script>

<style scoped>
.runoff-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  margin-left: 10px; /* 确保输入框靠左对齐 */
}

.gradient-card {
  /* 半透明渐变背景 */
  background: linear-gradient(
    135deg, 
    rgba(250, 253, 255, 0.8), 
    rgba(137, 223, 252, 0.8)
  );
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  padding: 30px;
  text-align: left; /* 改为左对齐 */
  width: 300px;
  backdrop-filter: blur(5px); /* 添加模糊效果增强半透明感 */
  border: none;
}

.label {
  font-weight: bold;
  font-size: 18px;
  margin-bottom: 10px; /* 减少底部外边距 */
  color: #333;
}

.custom-input {
  width: 100%;
  max-width: 200px;
  margin-left: 10px; /* 确保输入框靠左对齐 */
}

/* 自定义输入框样式 */
:deep(.custom-input .el-input__inner) {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  border: 1px solid #dcdfe6;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  padding: 10px 15px;
  font-size: 16px;
}

:deep(.custom-input .el-input__inner:focus) {
  border-color: #409EFF;
  box-shadow: 0 0 0 2px rgba(64, 158, 255, 0.2);
}

.calculate-btn {
  width: 100%;
  max-width: 200px;
  height: 50px;
  border: none;
  border-radius: 25px !important;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.4s ease;
  
  /* 渐变背景色 */
  background: linear-gradient(to right, #8DF9F0, #26B046);
  color: white !important;
  /* 按钮整体阴影 */
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15),
              0 2px 6px rgba(38, 176, 70, 0.3) inset;
}

.calculate-btn:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2),
              0 2px 8px rgba(38, 176, 70, 0.4) inset;
  background: linear-gradient(to right, #7de8df, #20a03d);
}

.calculate-btn:active {
  transform: scale(0.98);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1),
              0 1px 6px rgba(38, 176, 70, 0.4) inset;
}

</style>