/* ============ 房贷计算器 样式 ============ */
:root {
  --primary: #ff6a3d;
  --primary-dark: #e84e1e;
  --primary-soft: #fff1ec;
  --amber: #f59e0b;
  --blue: #3b82f6;
  --green: #10b981;
  --bg: #f3f5f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e9f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 6px 24px rgba(15, 23, 42, 0.06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

/* hidden 属性必须始终生效，防止组件级 display 规则覆盖（如 .combined-fields 的 display:grid） */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

.container {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ 顶栏 ============ */
.app-header {
  background: linear-gradient(120deg, #f2471d, #ff6a3d 55%, #ff9366);
  color: #fff;
  padding: 26px 0 22px;
}

.header-inner { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; }

.logo {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo-icon { margin-right: 6px; }

.subtitle {
  margin: 0;
  font-size: 13.5px;
  opacity: 0.92;
}

/* ============ 布局 ============ */
.layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr) 300px;
  grid-template-areas: "setup result prepay";
  gap: 20px;
  padding-top: 24px;
  padding-bottom: 40px;
  align-items: start;
}

.panel {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  min-width: 0; /* 允许网格子项收缩，表格横向滚动而不撑开布局 */
}

.setup-panel { grid-area: setup; position: sticky; top: 16px; }
.result-panel { grid-area: result; container-type: inline-size; }
.prepay-panel { grid-area: prepay; position: sticky; top: 16px; }

.panel-sub {
  margin: -8px 0 14px;
  font-size: 12.5px;
  color: var(--muted);
}

/* 窄栏内的提前还款方式：竖排单选 */
.prepay-panel .prepay-strategy {
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.prepay-panel .prepay-strategy .radio {
  justify-content: flex-start;
  padding: 8px 12px;
  font-size: 13px;
}

.panel-title {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  flex: none;
}

/* ============ 贷款方式 tabs ============ */
.tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: #eef1f5;
  padding: 5px;
  border-radius: 10px;
  margin-bottom: 16px;
}

.tab {
  border: 0;
  background: transparent;
  padding: 9px 4px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  transition: all 0.15s ease;
}

.tab:hover { color: var(--text); }

.tab.is-active {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.12);
}

/* ============ 表单字段 ============ */
.field { margin-bottom: 16px; }

.field-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}

.field-label { font-weight: 600; font-size: 13.5px; }

.field-extra { color: var(--muted); font-size: 12px; }

.input-unit {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: 9px;
  overflow: hidden;
  background: #fff;
  transition: border-color 0.15s ease;
}

.input-unit:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 106, 61, 0.15);
}

.input-unit input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 10px 12px;
  font-size: 16px;
  font-family: inherit;
  color: var(--text);
  background: transparent;
  width: 100%;
}

.unit {
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  background: #f6f8fa;
  color: var(--muted);
  font-size: 13px;
  border-left: 1px solid var(--border);
  flex: none;
}

input[type="range"] {
  width: 100%;
  margin-top: 10px;
  accent-color: var(--primary);
  height: 20px;
}

.quick-btns { display: flex; gap: 6px; margin-top: 8px; }

.quick-btns button {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 12.5px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}

.quick-btns button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.quick-btns button.is-active {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: var(--primary-dark);
  font-weight: 600;
}

/* 提前还款输入与方式 */
.prepay-strategy {
  flex-wrap: wrap;
  margin-top: 10px;
}

.prepay-strategy .radio {
  padding: 6px 11px;
  font-size: 12.5px;
}

/* 提前还款说明条 */
.prepay-bar {
  margin-top: 12px;
  padding: 10px 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
  color: #1e40af;
  font-size: 13px;
  line-height: 1.6;
}

.prepay-bar b { font-weight: 700; }

/* 明细表中提前还款当期高亮 */
.schedule-table tbody tr.is-prepay td {
  background: #fff7ed;
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--primary);
}

/* ============ 还款方式单选 ============ */
.radio-group { display: flex; gap: 10px; }

.radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13.5px;
  transition: all 0.15s ease;
  user-select: none;
}

.radio:hover { border-color: var(--primary); }

.radio:has(input:checked) {
  border-color: var(--primary);
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-weight: 600;
}

.radio input { accent-color: var(--primary); margin: 0; }

/* ============ 组合贷款 ============ */
.combined-fields {
  display: grid;
  grid-template-columns: 1fr; /* 商业贷款部分 / 公积金贷款部分 上下排列 */
  gap: 12px;
  margin-bottom: 16px;
}

.sub-block {
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 12px;
  background: #fafbfd;
}

.sub-block:hover { border-color: var(--primary); }

.sub-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

/* 错误提示 */
.field-error {
  color: #dc2626;
  font-size: 12px;
  min-height: 0;
  margin-top: 4px;
  display: none;
}

.field-error.show { display: block; }

/* ============ 按钮 ============ */
.actions { display: flex; gap: 10px; margin-top: 4px; }

.btn-primary {
  flex: 1;
  border: 0;
  background: linear-gradient(120deg, #f2471d, #ff6a3d);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 12px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 4px 14px rgba(242, 71, 29, 0.35);
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}

.btn-primary:active { transform: translateY(1px); }

.btn-ghost {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}

.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.btn-ghost:disabled {
  color: var(--muted);
  background: #f6f8fa;
  cursor: not-allowed;
  opacity: 0.7;
}

.result-status {
  margin: -6px 0 14px;
  padding: 9px 12px;
  border: 1px solid #f3c78b;
  border-radius: 8px;
  background: #fff8eb;
  color: #8a4b08;
  font-size: 13px;
}

.tip {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

/* ============ 汇总卡片 ============ */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.summary-card {
  background: #fafbfd;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  min-width: 0;
}

.summary-label {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.summary-value {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.3px;
  word-break: break-all;
}

.summary-main {
  grid-column: span 1;
  background: linear-gradient(135deg, #f2471d, #ff6a3d);
  border: 0;
  color: #fff;
}

.summary-main .summary-value { color: #fff; font-size: 18px; }

.summary-main .summary-label { color: rgba(255, 255, 255, 0.85); }

.summary-sub {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  word-break: break-all;
}

.summary-main .summary-sub { color: rgba(255, 255, 255, 0.9); font-size: 12.5px; }

/* 等额本金补充栏 */
.extra-bar {
  margin-top: 12px;
  padding: 10px 14px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 10px;
  color: #92400e;
  font-size: 13px;
}

.extra-bar b { font-weight: 700; }

/* ============ 图表 ============ */
.charts {
  display: grid;
  grid-template-columns: minmax(190px, 260px) minmax(0, 1fr);
  gap: 16px;
  margin-top: 18px;
}

/* 中栏变窄时自适应（容器查询按结果面板宽度判断） */
@container (max-width: 560px) {
  .charts { grid-template-columns: 1fr; }
}

@container (max-width: 620px) {
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.chart-box {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  background: #fff;
  min-width: 0;
}

.chart-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}

.chart { width: 100%; }

.chart svg { display: block; width: 100%; height: auto; }

.chart svg text { font-family: var(--font); }

.legend {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--muted);
  flex-wrap: wrap;
}

.legend-item { display: inline-flex; align-items: center; gap: 5px; }

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
  flex: none;
}

/* ============ 明细表 ============ */
.table-block { margin-top: 18px; }

.table-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.table-title { font-size: 15px; font-weight: 700; }

.filter-label {
  font-size: 13px;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.filter-label select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  font-family: inherit;
  font-size: 13px;
  background: #fff;
  color: var(--text);
  outline: none;
}

.filter-label select:focus { border-color: var(--primary); }

.table-section-summary {
  font-size: 12.5px;
  color: var(--muted);
  background: #f6f8fa;
  border-radius: 8px;
  padding: 6px 10px;
  margin-bottom: 8px;
}

.table-section-summary b { color: var(--primary-dark); }

.table-wrap {
  max-height: 430px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.schedule-table th {
  position: sticky;
  top: 0;
  background: #f6f8fa;
  color: var(--muted);
  font-weight: 600;
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  z-index: 1;
}

.schedule-table td {
  padding: 7px 10px;
  border-bottom: 1px solid #f0f2f5;
  white-space: nowrap;
}

.schedule-table tbody tr:nth-child(even) { background: #fafbfd; }

.schedule-table tbody tr:hover { background: var(--primary-soft); }

.schedule-table tr.is-last-year td { background: #fffbeb; }

.num { text-align: right; }

/* ============ 历史记录 ============ */
.history-block { margin-top: 20px; }

.history-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.link-btn {
  border: 0;
  background: transparent;
  color: var(--primary);
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  padding: 4px 6px;
  border-radius: 6px;
}

.link-btn:hover { background: var(--primary-soft); }

.history-list { display: grid; gap: 8px; }

.history-empty {
  color: var(--muted);
  font-size: 13px;
  margin: 4px 0;
  text-align: center;
  padding: 12px;
  border: 1px dashed var(--border);
  border-radius: 10px;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  transition: border-color 0.15s ease;
}

.history-item:hover { border-color: var(--primary); }

.history-main { min-width: 0; flex: 1; }

.history-title {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-actions { display: flex; gap: 6px; flex: none; }

.history-actions button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 8px;
  padding: 5px 10px;
  font-size: 12.5px;
  cursor: pointer;
  font-family: inherit;
  color: var(--text);
  transition: all 0.15s ease;
}

.history-actions button.load {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
}

.history-actions button.del:hover {
  border-color: #dc2626;
  color: #dc2626;
  background: #fef2f2;
}

/* ============ 页脚 ============ */
.app-footer {
  border-top: 1px solid var(--border);
  padding: 22px 0 30px;
  color: var(--muted);
  font-size: 12.5px;
  text-align: center;
}

/* ============ 响应式 ============ */
@media (max-width: 1179px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "setup"
      "prepay"
      "result";
  }
  .setup-panel,
  .prepay-panel { position: static; }
  .prepay-panel .prepay-strategy { flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .container { padding: 0 14px; }
  /* Make page bands span the viewport even when an embedding wrapper is narrower. */
  .app-header,
  .layout,
  .app-footer {
    width: 100vw;
    margin-left: calc(50% - 50vw);
  }
  /* Keep content inset while letting the panels themselves use the full band width. */
  .layout {
    padding-left: 0;
    padding-right: 0;
  }
  .layout > .panel {
    border-radius: 0;
  }
  .app-header { padding: 20px 0 18px; }
  .logo { font-size: 22px; }
  .subtitle { font-size: 12.5px; }
  .panel { padding: 16px; }
  .charts { grid-template-columns: 1fr; }
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .summary-main .summary-value { font-size: 22px; }
  .schedule-table { font-size: 12.5px; }
  .schedule-table th, .schedule-table td { padding: 7px 8px; }
  .actions { flex-direction: column; }
}