/* ============================================================
 * 接缝宽度计算器样式
 *
 * 设计令牌全部取自 style.css 的 :root，不引入新颜色。
 * style.css 是 build-theme.js 生成的，所以工具样式单独放这里。
 * ============================================================ */

/* ---------- 布局 ---------- */
.calc-hero {
  padding: 56px 0 32px;
  background: linear-gradient(160deg, var(--bg-alt) 0%, #fff 100%);
  border-bottom: 1px solid var(--border);
}

.calc-hero .container { max-width: var(--max-w); }

.calc-hero h1 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--primary-dark);
  margin: 0 0 16px;
}

.calc-hero p {
  max-width: 780px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-light);
  margin: 0;
}

.calc-body { padding: 44px 0 72px; }

.calc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

/* ---------- 面板 ---------- */
.calc-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px 30px;
}

.calc-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.calc-panel-head h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary-dark);
}

.calc-step {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
}

/* ---------- 输入 ---------- */
.calc-field { margin-bottom: 20px; }

.calc-field:last-child { margin-bottom: 0; }

.calc-label {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.calc-hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-muted);
}

.calc-input,
.calc-select {
  width: 100%;
  padding: 11px 14px;
  font-size: 15.5px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.calc-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235A6B82' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
}

.calc-input:focus,
.calc-select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.calc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.calc-unit {
  position: relative;
}

.calc-unit .calc-input { padding-right: 52px; }

.calc-unit-tag {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-muted);
  pointer-events: none;
}

/* ---------- 结果 ---------- */
.calc-result {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  border-radius: var(--radius);
  padding: 30px 32px;
  color: #fff;
}

.calc-result-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 6px;
}

.calc-big {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.calc-big span {
  font-size: 20px;
  font-weight: 600;
  margin-left: 6px;
  color: rgba(255, 255, 255, 0.8);
}

.calc-result-note {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.75);
}

.calc-kv {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.calc-kv-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 9px 0;
  font-size: 15px;
}

.calc-kv-row + .calc-kv-row { border-top: 1px solid rgba(255, 255, 255, 0.08); }

.calc-kv-key { color: rgba(255, 255, 255, 0.78); }

.calc-kv-val { font-weight: 700; white-space: nowrap; }

.calc-warn {
  margin-top: 18px;
  padding: 12px 15px;
  border-radius: var(--radius-sm);
  background: rgba(232, 119, 34, 0.22);
  border: 1px solid rgba(232, 119, 34, 0.5);
  font-size: 13.5px;
  line-height: 1.6;
  color: #fff;
}

.calc-warn strong { color: #FFD9B8; }

/* ---------- 用量表 ---------- */
.calc-table-wrap {
  margin-top: 28px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.calc-table th,
.calc-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.calc-table th {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-alt);
}

.calc-table td.num {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--primary-dark);
}

.calc-table tr:last-child td { border-bottom: none; }

.calc-table tr.is-active td { background: var(--primary-soft); }

/* ---------- 公式说明 ---------- */
.calc-formula {
  margin-top: 28px;
  padding: 24px 26px;
  background: #FFF8F1;
  border: 1px solid rgba(232, 119, 34, 0.28);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
}

.calc-formula h3 {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}

.calc-formula code {
  display: inline-block;
  padding: 3px 9px;
  margin: 3px 0;
  font-size: 14.5px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(232, 119, 34, 0.25);
  border-radius: 6px;
  color: var(--primary-dark);
}

.calc-formula p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 正文（SEO 内容）---------- */
.calc-content { max-width: 900px; }

.calc-content h2 {
  margin: 48px 0 16px;
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary-dark);
}

.calc-content h3 {
  margin: 30px 0 10px;
  font-size: 17.5px;
  font-weight: 700;
  color: var(--text);
}

.calc-content p,
.calc-content li {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-light);
}

.calc-content p { margin: 0 0 16px; }

.calc-content ul,
.calc-content ol { margin: 0 0 18px; padding-left: 22px; }

.calc-content li { margin-bottom: 9px; }

.calc-content strong { color: var(--text); }

.calc-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.calc-link-card {
  display: block;
  padding: 20px 22px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.calc-link-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.calc-link-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
}

.calc-link-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-light);
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calc-result { padding: 26px 22px; }
  .calc-big { font-size: 38px; }
  .calc-panel { padding: 22px 20px; }
}

@media (max-width: 560px) {
  .calc-row { grid-template-columns: 1fr; }
  .calc-table th, .calc-table td { padding: 10px 12px; font-size: 13.5px; }
}

/* ============================================================
 * 2026-10-07 修复：深色结果面板的标题框线
 *
 * 现象：结果面板「2 Your result」标题被画出四边框（上/左/右约 3px）。
 * 根因：原模板用内联 style="border-color:rgba(255,255,255,0.18)" 改分隔线颜色，
 *       触发 WordPress 核心规则
 *       :where([style^=border-color],...){border-style:solid}
 *       → 该元素四边都变成 solid，上/左/右用默认 border-width:medium(3px)。
 * 修法：模板去掉内联 border-color，颜色改由 CSS 类控制。
 * ============================================================ */
.calc-result .calc-panel-head { border-bottom-color: rgba(255, 255, 255, 0.18); }
.calc-result .calc-panel-head h2 { color: #fff; }
.calc-result .calc-step { background: rgba(255, 255, 255, 0.16); color: #fff; }