/* XXDQ Selector Tool — terminal recommendation calculator
   Self-contained, BEM naming, mobile-first.
   Visual reset to play nicely with GeneratePress default forms. */

.xxdq-selector {
  --xxdq-c-primary: #1f6feb;
  --xxdq-c-primary-dark: #1657c2;
  --xxdq-c-accent: #ff7a1a;
  --xxdq-c-text: #1f2933;
  --xxdq-c-muted: #5a6675;
  --xxdq-c-border: #d8dee5;
  --xxdq-c-bg: #ffffff;
  --xxdq-c-bg-alt: #f5f7fa;
  --xxdq-c-success: #0a7d3b;
  --xxdq-c-warn: #b25c00;
  --xxdq-c-error: #c0392b;
  --xxdq-radius: 8px;
  --xxdq-shadow: 0 2px 12px rgba(15, 23, 42, .06);
  --xxdq-shadow-hover: 0 6px 20px rgba(15, 23, 42, .10);
  --xxdq-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-family: var(--xxdq-font);
  color: var(--xxdq-c-text);
  line-height: 1.55;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0;
}

/* ── Hero strip ───────────────────────────────────────── */
.xxdq-selector__hero {
  background: linear-gradient(135deg, #0d1b2a 0%, #1b3a5c 100%);
  color: #fff;
  padding: 32px 24px;
  border-radius: var(--xxdq-radius);
  margin-bottom: 24px;
}
.xxdq-selector__hero h1 {
  font-size: 1.75rem;
  margin: 0 0 8px;
  font-weight: 600;
  letter-spacing: .02em;
}
.xxdq-selector__hero p {
  margin: 0;
  font-size: .95rem;
  opacity: .85;
}

/* ── Card / form layout ────────────────────────────────── */
.xxdq-selector__card {
  background: var(--xxdq-c-bg);
  border: 1px solid var(--xxdq-c-border);
  border-radius: var(--xxdq-radius);
  padding: 28px 24px;
  box-shadow: var(--xxdq-shadow);
  margin-bottom: 24px;
}
.xxdq-selector__card h2 {
  font-size: 1.25rem;
  margin: 0 0 6px;
  color: var(--xxdq-c-text);
}
.xxdq-selector__card .xxdq-selector__hint {
  color: var(--xxdq-c-muted);
  font-size: .9rem;
  margin: 0 0 20px;
}

/* ── Form fields ───────────────────────────────────────── */
.xxdq-selector__form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
}
.xxdq-selector__field {
  display: flex;
  flex-direction: column;
}
.xxdq-selector__field--full {
  grid-column: 1 / -1;
}
.xxdq-selector__label {
  font-size: .9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--xxdq-c-text);
}
.xxdq-selector__label .xxdq-selector__req {
  color: var(--xxdq-c-error);
  margin-left: 2px;
}
.xxdq-selector__input,
.xxdq-selector__select {
  font-family: inherit;
  font-size: 1rem;
  padding: 10px 12px;
  border: 1px solid var(--xxdq-c-border);
  border-radius: 6px;
  background: #fff;
  color: var(--xxdq-c-text);
  transition: border-color .15s, box-shadow .15s;
  width: 100%;
  box-sizing: border-box;
}
.xxdq-selector__input:focus,
.xxdq-selector__select:focus {
  outline: none;
  border-color: var(--xxdq-c-primary);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, .12);
}
.xxdq-selector__actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 12px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.xxdq-selector__btn {
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  padding: 11px 28px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s, transform .05s;
}
.xxdq-selector__btn--primary {
  background: var(--xxdq-c-primary);
  color: #fff;
}
.xxdq-selector__btn--primary:hover { background: var(--xxdq-c-primary-dark); }
.xxdq-selector__btn--primary:active { transform: translateY(1px); }
.xxdq-selector__btn--ghost {
  background: transparent;
  border-color: var(--xxdq-c-border);
  color: var(--xxdq-c-muted);
}
.xxdq-selector__btn--ghost:hover {
  border-color: var(--xxdq-c-primary);
  color: var(--xxdq-c-primary);
}

/* ── Result panel ──────────────────────────────────────── */
.xxdq-selector__result {
  border: 1px solid #c6e0ff;
  background: linear-gradient(180deg, #f4faff 0%, #ffffff 100%);
  border-radius: var(--xxdq-radius);
  padding: 28px 24px;
  box-shadow: var(--xxdq-shadow);
  margin-bottom: 24px;
  display: none;
}
.xxdq-selector__result.is-visible { display: block; }
.xxdq-selector__result-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.xxdq-selector__result-title {
  font-size: 1.2rem;
  margin: 0;
  color: var(--xxdq-c-text);
}
.xxdq-selector__model-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--xxdq-c-primary);
  color: #fff;
  font-weight: 600;
  border-radius: 999px;
  font-size: 1rem;
  letter-spacing: .03em;
}

/* ── Two-table layout (spec §六: 端子选型结果 + 功率信息) ─── */
.xxdq-selector__tables {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 18px;
}
.xxdq-selector__terminal-section,
.xxdq-selector__power-section {
  background: #fff;
  border: 1px solid var(--xxdq-c-border);
  border-radius: 6px;
  padding: 16px 18px;
}
.xxdq-selector__terminal-section h3,
.xxdq-selector__power-section h3 {
  font-size: 1rem;
  margin: 0 0 12px;
  color: var(--xxdq-c-text);
  font-weight: 600;
}
.xxdq-selector__terminal-table,
.xxdq-selector__power-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
.xxdq-selector__terminal-table th,
.xxdq-selector__terminal-table td,
.xxdq-selector__power-table th,
.xxdq-selector__power-table td {
  padding: 8px 6px;
  text-align: left;
  border-bottom: 1px solid #eef0f3;
  vertical-align: top;
}
.xxdq-selector__terminal-table tr:last-child th,
.xxdq-selector__terminal-table tr:last-child td,
.xxdq-selector__power-table tr:last-child th,
.xxdq-selector__power-table tr:last-child td { border-bottom: none; }
.xxdq-selector__terminal-table th,
.xxdq-selector__power-table th {
  color: var(--xxdq-c-muted);
  font-weight: 500;
  width: 36%;
}
.xxdq-selector__terminal-table td,
.xxdq-selector__power-table td {
  color: var(--xxdq-c-text);
  font-weight: 500;
}
.xxdq-selector__stat-value {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--xxdq-c-text);
}
.xxdq-selector__stat-value--muted { color: var(--xxdq-c-muted); font-size: 1rem; }

/* Conclusion badge — spec §六: ✅ 满足 / ⚠️ 载流量不足 */
.xxdq-selector__terminal-conclusion {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--xxdq-c-success);
}
.xxdq-selector__terminal-conclusion.is-fail {
  color: var(--xxdq-c-error);
}
.xxdq-selector__conclusion-icon {
  font-size: 1em;
  line-height: 1;
}

/* ── Warning banner (insufficient ampacity) ─────────────── */
.xxdq-selector__warning {
  border: 1px solid #f3c5be;
  background: #fdf2ef;
  color: var(--xxdq-c-error);
  border-left: 4px solid var(--xxdq-c-error);
  border-radius: 6px;
  padding: 14px 18px;
  margin-bottom: 18px;
  display: none;
  font-size: .92rem;
}
.xxdq-selector__warning.is-visible { display: block; }
.xxdq-selector__warning strong {
  display: block;
  margin-bottom: 4px;
  font-size: .98rem;
}

/* ── Correction factors ─────────────────────────────────── */
.xxdq-selector__factors {
  background: #fff;
  border: 1px dashed var(--xxdq-c-border);
  border-radius: 6px;
  padding: 14px 18px;
  margin-bottom: 18px;
  font-size: .9rem;
  color: var(--xxdq-c-muted);
}
.xxdq-selector__factors ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.xxdq-selector__factors li strong { color: var(--xxdq-c-text); }

/* ── Note strip ─────────────────────────────────────────── */
.xxdq-selector__note {
  background: #fff8eb;
  border-left: 3px solid var(--xxdq-c-warn);
  padding: 10px 14px;
  border-radius: 4px;
  font-size: .9rem;
  color: var(--xxdq-c-warn);
  margin-bottom: 18px;
}

/* ── CTA buttons ─────────────────────────────────────────── */
.xxdq-selector__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.xxdq-selector__cta .xxdq-selector__btn--accent {
  background: var(--xxdq-c-accent);
  color: #fff;
}
.xxdq-selector__cta .xxdq-selector__btn--accent:hover {
  background: #d96610;
}

/* ── Error state ───────────────────────────────────────── */
.xxdq-selector__error {
  border: 1px solid #f3c5be;
  background: #fdf2ef;
  color: var(--xxdq-c-error);
  border-radius: var(--xxdq-radius);
  padding: 18px 22px;
  margin-bottom: 24px;
  display: none;
}
.xxdq-selector__error.is-visible { display: block; }
.xxdq-selector__error strong { display: block; margin-bottom: 4px; }

/* ── SEO content ───────────────────────────────────────── */
.xdq-selector__result { /* fallback (typo guard from old template) */ }
.xxdq-selector__seo {
  background: var(--xxdq-c-bg);
  border: 1px solid var(--xxdq-c-border);
  border-radius: var(--xxdq-radius);
  padding: 28px 24px;
  box-shadow: var(--xxdq-shadow);
  margin-bottom: 24px;
}
.xxdq-selector__seo h2 {
  font-size: 1.25rem;
  margin: 0 0 12px;
}
.xxdq-selector__seo h3 {
  font-size: 1.05rem;
  margin: 18px 0 8px;
  color: var(--xxdq-c-text);
}
.xxdq-selector__seo p { margin: 0 0 10px; color: var(--xxdq-c-text); }
.xxdq-selector__seo ul,
.xxdq-selector__seo ol { padding-left: 22px; }
.xxdq-selector__seo li { margin-bottom: 4px; }
.xxdq-selector__faq {
  border-top: 1px solid var(--xxdq-c-border);
  margin-top: 18px;
  padding-top: 14px;
}
.xxdq-selector__faq dt {
  font-weight: 600;
  color: var(--xxdq-c-text);
  margin-top: 10px;
}
.xxdq-selector__faq dd {
  margin: 4px 0 0 0;
  color: var(--xxdq-c-muted);
  font-size: .95rem;
}
.xxdq-selector__formula {
  background: var(--xxdq-c-bg-alt);
  border-left: 3px solid var(--xxdq-c-primary);
  padding: 12px 16px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Consolas, monospace;
  font-size: .9rem;
  overflow-x: auto;
  margin: 10px 0;
}

/* ── Mobile ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .xxdq-selector__tables {
    grid-template-columns: 1fr; /* Stack the two tables on tablet */
  }
}

@media (max-width: 640px) {
  .xxdq-selector__hero { padding: 24px 18px; }
  .xxdq-selector__hero h1 { font-size: 1.4rem; }
  .xxdq-selector__card,
  .xxdq-selector__result,
  .xxdq-selector__seo { padding: 20px 16px; }
  .xxdq-selector__form {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .xxdq-selector__actions {
    flex-direction: column;
  }
  .xxdq-selector__btn { width: 100%; }
  .xxdq-selector__cta { flex-direction: column; }
  .xxdq-selector__cta .xxdq-selector__btn { width: 100%; }
  .xxdq-selector__factors ul { gap: 8px 14px; }
  .xxdq-selector__result-head { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 380px) {
  .xxdq-selector__power-table th,
  .xxdq-selector__terminal-table th { width: 42%; }
}