/* ========== 基础设计（白色系简洁风） ========== */
:root {
  --bg: #f6f7fb;
  --card-bg: #ffffff;
  --text: #2b2f36;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #4c6ef5;
  --accent-weak: #e9efff;
  --accent-2: #22b8cf; /* 点缀青色 */
  --danger: #e03131;
  --danger-weak: #fdecef;
  --chip-border: #ffd8a8;
  --chip-text: #d9480f;
  --chip-hover: #ffa94d;
  --divider: #eef1f6;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  padding: 20px; /* ↑ 提升全局留白，页面更高更敞亮 */
  padding-bottom: 0px;
  min-height: 100vh; /* 确保页面最小高度为视窗高度 */
}

.container {
  max-width: min(95vw, 1400px); /* 使用视窗宽度百分比，最大1400px */
  width: 100%;
  margin: 0 auto;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 10px 28px rgba(0,0,0,.06);
  overflow: hidden;
}

h1 {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 700;
  padding: 26px 16px 22px; /* ↑ 增加上下留白，整体更高 */
  color: #1f2937;
  position: relative;
}

h1::after {
  content: '';
  display: block;
  width: 64px;
  height: 3px;
  margin: 10px auto 0;
  background: var(--accent);
  border-radius: 2px;
}

/* Sections */
.input-section, .adjustment-section, .target-section {
  padding: 18px 22px;
}
.input-section + .adjustment-section,
.adjustment-section + .target-section { border-top: 1px solid var(--border); }

h2 {
  font-size: 1.05rem;
  color: #374151;
  font-weight: 600;
  margin-bottom: 14px;
  text-align: center;
  position: relative;
}
h2::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -2px;
  transform: translateX(-50%);
  width: 56px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}

/* ========== 输入行（紧凑对齐） ========== */
.input-group {
  display: grid;
  grid-template-columns: 130px 1fr auto; /* label | input | suffix/lock(自适应) */
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  transition: border-color .2s ease, box-shadow .2s ease;
  margin-bottom: 12px;
  position: relative;
}
.input-group::after { /* 右侧细色条点缀 */
  content: '';
  position: absolute;
  top: 6px; bottom: 6px; right: 4px;
  width: 3px; border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: .15; pointer-events: none;
}
.input-group:hover { border-color: #d0d5dd; box-shadow: 0 2px 10px rgba(0,0,0,.03); }

/* 输入单位/后缀对齐 */
.input-suffix { color: var(--muted); font-weight: 600; }

input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
}

/* 自动计算提示：徽标 + 侧边色条更显眼，替代纯文字 */
.auto-status { display:none; }
.input-group.auto-hint::after { opacity: .35; }
input.auto-calculated {
  border-color: #2f9e44;
  background: #f0fff4;
  box-shadow: 0 0 0 3px rgba(47,158,68,.15);
}
/* 自动计算徽章视觉（出现在输入框右上角） */
.input-badge {
  position: absolute;
  right: 12px;
  top: -8px;
  height: 22px;
  line-height: 22px;
  padding: 0 8px;
  color: #fff;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 4px 10px rgba(64,192,87,.25);
}
.input-badge.computed-badge{ background: linear-gradient(90deg,#2f9e44,#40c057); }
.input-badge.predict-badge {
  opacity: .9;
  background: linear-gradient(90deg, var(--accent-2) 0%, var(--accent) 100%);
}

/* 快捷按钮色彩对比提升 */
.quick-buttons button {
  height: 34px; padding: 0 12px; border-radius: 16px; border: 1px solid var(--chip-border);
  color: var(--chip-text); background: #fff; cursor: pointer; font-weight: 600; font-size: .9rem;
}
.quick-buttons button.active,
.quick-buttons button:hover {
  background: var(--chip-hover); color: #fff; border-color: var(--chip-hover);
}

/* 分割细线点缀 */
.input-section + .adjustment-section,
.adjustment-section + .target-section { border-top: 1px solid var(--divider); }

label {
  color: #374151;
  font-weight: 600;
  text-align: left;
}

input[type="number"] {
  height: 38px;
  border: 1px solid #d0d5dd;
  border-radius: 8px;
  padding: 8px 12px;
  outline: none;
  font-size: 0.95rem;
  background: #fff;
  transition: box-shadow .2s ease, border-color .2s ease;
}
input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
}

/* 自动计算状态 */
input.auto-calculated {
  border-color: #2f9e44;
  background: #f0fff4;
  box-shadow: 0 0 0 3px rgba(47,158,68,.15);
}

/* 锁定按钮（非0才可锁） */
.lock-btn {
  height: 36px;
  padding: 0 12px;
  border: 1px solid #d0d5dd;
  background: #fff;
  color: #475569;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
  min-width: 72px;
}
.lock-btn:hover { background: #f8fafc; }
.lock-btn.locked {
  background: var(--danger-weak);
  border-color: var(--danger);
  color: #c92a2a;
}
.lock-btn:disabled { opacity: .6; cursor: not-allowed; }

/* 当前满意度 + 重置 并排 */
.result-control-area {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 12px;
  padding: 16px 18px; /* ↑ 略增内边距，提升高度 */
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.result p { margin: 0; font-weight: 600; color: #374151; }
.result span { color: var(--accent); font-weight: 800; font-size: 1.25rem; }
.reset-btn {
  height: 36px; padding: 0 14px; border-radius: 8px; border: 1px solid var(--accent);
  background: #fff; color: var(--accent); font-weight: 700; cursor: pointer;
}
.reset-btn:hover { background: var(--accent); color: #fff; }

/* ========== 调整预测（合并为一行） ========== */
.adjustment-row { display: flex; align-items: center; gap: 16px; }
.mini-result {
  flex: 1;
  display: flex; align-items: center; justify-content: flex-end;
  gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px;
  background: #f9fafb; min-height: 38px;
}
.mini-result p { margin: 0; font-weight: 600; color: #374151; }
.mini-result span { color: var(--accent); font-weight: 800; }

/* ========== 目标满意度（输入 + 快捷） ========== */
.target-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.target-row .quick-buttons { margin-left: auto; display: flex; gap: 8px; }
.quick-buttons button {
  height: 34px; padding: 0 12px; border-radius: 16px; border: 1px solid var(--chip-border);
  color: var(--chip-text); background: #fff; cursor: pointer; font-weight: 600; font-size: .9rem;
}
.quick-buttons button:hover { background: var(--chip-hover); color: #fff; border-color: var(--chip-hover); }

/* 结果区域统一样式 */
.result { margin-top: 10px; }
.result .detail { color: var(--muted); font-size: .9rem; margin-top: 4px; }

/* 错误信息 */
#errorMessage, .error-message, .error {
  display: none; /* 默认隐藏，由脚本控制显示 */
  background: #fff5f5;
  color: #c92a2a;
  border: 1px solid #ffd6d6;
  padding: 10px 12px;
  border-radius: 8px;
  margin: 12px 22px 18px;
  text-align: center;
  font-weight: 600;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  body { padding: 12px; }
  .container { 
    max-width: 98vw; /* 移动端使用更大的屏幕宽度比例 */
    border-radius: 10px; 
  }
  .input-group { grid-template-columns: 1fr; gap: 10px; }
  .lock-btn { justify-self: end; }
  .result-control-area { flex-direction: column; align-items: stretch; }
  .adjustment-row, .target-row { flex-direction: column; align-items: stretch; }
  .target-row .quick-buttons { margin-left: 0; justify-content: flex-start; }
}
/* 行内布局下的输入组更紧凑且可拉伸 */
.adjustment-row .input-group,
.target-row .input-group {
  margin-bottom: 0;
  flex: 1;
}

/* 三大板块视觉分割增强 */
.section-slab { /* 为三块加统一基底阴影与圆角 */
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 10px 28px rgba(0,0,0,.05);
  padding: 32px 34px; /* ↑ 增加 slab 内边距，整体更高 */
}

/* 将原有三块应用 slab 效果 */
.input-section.section-slab + .adjustment-section.section-slab,
.adjustment-section.section-slab + .target-section.section-slab {
  margin-top: 24px; /* ↑ 增加板块间距，提升整体高度与层次 */
  border-top: 1px solid var(--divider);
}

/* 顶部/底部小色带分隔，便于快速识别 */
.section-slab::before{
  content:'';
  display:block;
  height:4px;
  margin:-32px -34px 18px; /* 与上面的 padding 匹配 */
  background: linear-gradient(90deg,var(--accent) 0%, var(--accent-2) 100%);
  border-top-left-radius:14px; border-top-right-radius:14px;
}

/* 三块轻彩背景区分（淡淡的的颜色覆盖在白色之上） */
.input-section.section-slab {
  background: linear-gradient(0deg, rgba(76,110,245,0.05), rgba(76,110,245,0.05)), #ffffff;
}
.adjustment-section.section-slab {
  background: linear-gradient(0deg, rgba(34,184,207,0.06), rgba(34,184,207,0.06)), #ffffff;
}
.target-section.section-slab {
  background: linear-gradient(0deg, rgba(255,184,0,0.06), rgba(255,184,0,0.06)), #ffffff;
}

/* 输入组聚合容器，让三个输入成为一个整体 */
.inputs-stack {
  display: flex;
  flex-direction: column;
  gap: 14px; /* 组内间距更紧凑 */
  padding: 18px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
}
.inputs-stack .input-group { margin-bottom: 0; } /* 由栈容器控制间距 */

/* 目标满意度：上下结构优化间距 */
.target-section .target-row { margin-bottom: 12px; }
.target-section .quick-buttons { justify-content: flex-start; gap: 10px; }

/* 提升整体内部留白与现代感 */
.section-slab > h2 { margin-bottom: 24px; font-size: 1.18rem; letter-spacing: .2px; }
.container > * { padding-left: 16px; padding-right: 16px; }

/* 快捷按钮：自适应均匀分布 */
.quick-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
  gap: 10px;
}
.quick-buttons button {
  height: 36px;
  border-radius: 18px;
  border: 1px solid var(--chip-border);
  color: var(--chip-text);
  background: #fff;
  cursor: pointer;
  font-weight: 700;
  font-size: .92rem;
  letter-spacing: .2px;
}
.quick-buttons button.active,
.quick-buttons button:hover {
  background: var(--chip-hover);
  color: #fff;
  border-color: var(--chip-hover);
}

@media (max-width: 768px) {
  .section-slab { padding: 24px 24px; }
  .container > * { padding-left: 0; padding-right: 0; }
  .inputs-stack { padding: 16px 16px; }
  h1 { padding: 20px 16px 16px; }
}