/* 继承自 loan_calculator.css 的部分样式 */
.page-header .subtitle { color: var(--muted-color, #666); margin-top: 6px; font-size: 14px; }
.page-header .header-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.page-header .header-row h1 { margin: 0; }
.back-link { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--primary-color, #2563eb); background: rgba(37, 99, 235, 0.06); border: 1px solid rgba(37, 99, 235, 0.25); padding: 8px 12px; border-radius: 8px; line-height: 1; transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease; }
.back-link i { font-size: 16px; }
.back-link span { font-weight: 600; font-size: 14px; }
.back-link:hover { background: rgba(37, 99, 235, 0.12); border-color: rgba(37, 99, 235, 0.35); transform: translateY(-1px); }

/* 主容器布局 */
.calculator-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  align-items: stretch; /* Make columns equal height */
}

@media (max-width: 768px) {
  .calculator-container {
    grid-template-columns: 1fr;
  }
}

.calculator-wrapper {
  background-color: #f0f2f5;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  border: 1px solid var(--border-color, #e5e7eb);
  height: 100%; /* Allow stretching */
}

/* 性别选择器样式 */
.gender-selector {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  margin-bottom: 15px;
  padding: 10px;
  background-color: #fff;
  border-radius: 10px;
  border: 1px solid #d1d5db;
}
.gender-selector > span { font-weight: 600; color: #374151; }
.radio-group { display: flex; gap: 10px; }
.radio-label { display: flex; align-items: center; cursor: pointer; }
.radio-label input[type="radio"] { display: none; }
.radio-label span { padding: 5px 15px; border-radius: 8px; border: 1px solid #d1d5db; transition: background-color 0.2s, color 0.2s; }
.radio-label input[type="radio"]:checked + span { background-color: var(--primary-color, #2563eb); color: #fff; border-color: var(--primary-color, #2563eb); }

.calculator-screen {
  background-color: #fff;
  border-radius: 10px;
  padding: 12px 20px;
  margin-bottom: 15px;
  text-align: right;
  min-height: 50px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid #d1d5db;
}

.input-display {
  font-size: 24px;
  font-weight: 500;
  color: #374151;
  word-break: break-all;
}

.calculator-keys {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.key-row {
  display: flex;
  gap: 10px;
}

.key {
  font-size: 20px;
  font-weight: 500;
  padding: 14px 0;
  border: none;
  border-radius: 10px;
  background-color: #fff;
  cursor: pointer;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
  border: 1px solid #d1d5db;
  flex: 1; /* Distribute space evenly */
  text-align: center;
}
.key:hover { background-color: #f9fafb; }
.key:active { transform: translateY(1px); box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.key-action { background-color: #e5e7eb; color: #374151; }
.key-action:hover { background-color: #d1d5db; }

/* 实时结果面板 */
.results-panel-wrapper {
  background-color: #fff;
  border-radius: 16px;
  padding: 20px;
  border: 1px solid var(--border-color, #e5e7eb);
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  height: 100%; /* Allow stretching */
  display: flex;
  flex-direction: column;
}
.result-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text-color, #111827);
  text-align: center;
}
.result-display-panel {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 10px;
}
.result-display-panel .placeholder {
  color: #9ca3af;
  text-align: center;
  font-size: 20px;
}
.result-display-panel ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}
.result-display-panel li {
  padding: 15px 25px;
  background-color: #f9fafb;
  border-radius: 12px;
  margin-bottom: 15px;
  text-align: center;
  width: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.chinese-result {
  font-size: 36px;
  font-weight: 600;
  color: var(--primary-color, #1d4ed8);
  line-height: 1.2;
}

.english-result {
  font-size: 18px;
  font-weight: 400;
  color: #6b7280;
  margin-top: 5px;
}