/* ========================================
   计算器组件专用样式
   ======================================== */

/* --- 求解变量选择器 --- */
.solve-for-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.solve-for-selector .solve-btn {
  flex: 1 1 auto;
  min-width: 100px;
  padding: 0.625rem 0.75rem;
  background: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  transition: all 0.2s;
  white-space: nowrap;
}

.solve-for-selector .solve-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-primary);
}

.solve-for-selector .solve-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* --- 计算器输入区域 --- */
.calc-inputs {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.calc-field {
  position: relative;
}

.calc-field.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.calc-field .field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.35rem;
}

.calc-field .field-label {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.calc-field .field-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.calc-field .field-icon {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  cursor: help;
}

/* --- 复利频率选择 --- */
.compound-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
  margin-top: 0.35rem;
}

.compound-selector label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.25rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-align: center;
  transition: all 0.2s;
}

.compound-selector input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.compound-selector input:checked + label {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* --- PMT时点选择 --- */
.pmt-timing {
  display: flex;
  gap: 0.5rem;
}

.pmt-timing label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  text-align: center;
  transition: all 0.2s;
}

.pmt-timing input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.pmt-timing input:checked + label {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* --- 按钮组 --- */
.calc-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.calc-actions .btn {
  flex: 1;
}

/* --- 结果区域增强 --- */
.result-details {
  margin-top: 1.5rem;
}

.result-details .detail-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-size: 0.9rem;
}

.result-details .detail-row:last-child {
  border-bottom: none;
}

/* --- 复利频率对比表（差异化功能）--- */
.freq-comparison {
  margin-top: 1.5rem;
}

.freq-comparison h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.freq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.freq-table th {
  background: var(--color-bg-alt);
  padding: 0.6rem 0.75rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-border);
}

.freq-table td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--color-border-light);
}

.freq-table tr.current {
  background: rgba(214,158,46,0.1);
  font-weight: 600;
}

.freq-table .diff-positive {
  color: var(--color-success);
  font-weight: 600;
}

/* --- 逐期明细表 --- */
.schedule-section {
  margin-top: 1.5rem;
}

/* --- 图表切换 --- */
.chart-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.chart-tab-btn {
  padding: 0.5rem 1rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  transition: all 0.2s;
}

.chart-tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* --- 计算步骤展示 --- */
.calc-steps {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.25rem;
}

.calc-steps h4 {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
}

.calc-steps .step {
  margin-bottom: 0.5rem;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.calc-steps .step code {
  background: var(--color-card);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-primary);
}

/* --- 响应式：桌面端计算器两栏布局 --- */
@media (min-width: 640px) {
  .compound-selector {
    grid-template-columns: repeat(3, 1fr);
  }

  .solve-for-selector .solve-btn {
    min-width: 80px;
  }
}

@media (min-width: 1024px) {
  .compound-selector {
    grid-template-columns: repeat(3, 1fr);
  }
}