/* ── Help Center Styles ───────────────────────────────────────── */

:root {
  --hc-primary: #b8960c;
  --hc-bg: #f8f6f0;
  --hc-surface: #ffffff;
  --hc-border: #e5e0d5;
  --hc-text: #2c2c2c;
  --hc-text-secondary: #6b6b6b;
  --hc-radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--color-bg, var(--hc-bg));
  color: var(--color-text, var(--hc-text));
  font-size: 15px;
  line-height: 1.6;
}

.hc-header {
  background: var(--color-surface, var(--hc-surface));
  border-bottom: 1px solid var(--color-border, var(--hc-border));
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.hc-back-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary, var(--hc-text-secondary));
  padding: 4px 8px;
  border-radius: 4px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}

.hc-back-btn:hover { background: var(--color-bg-hover, #f0ece2); }

.hc-header-title {
  font-weight: 600;
  font-size: 16px;
}

.hc-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 32px 24px;
}

.hc-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--color-border, var(--hc-border));
  margin-bottom: 32px;
}

.hc-tab {
  background: none;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary, var(--hc-text-secondary));
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  border-radius: 4px 4px 0 0;
  transition: color 0.2s, border-color 0.2s;
}

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

.hc-tab.active {
  color: var(--color-primary, var(--hc-primary));
  border-bottom-color: var(--color-primary, var(--hc-primary));
}

.hc-panel { display: none; }
.hc-panel.active { display: block; }

.hc-section { margin-bottom: 32px; }

.hc-section h2 {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border, var(--hc-border));
}

.hc-section p, .hc-section li {
  color: var(--color-text-secondary, var(--hc-text-secondary));
  margin: 6px 0;
}

.hc-section ul { padding-left: 20px; }

.hc-kbd {
  display: inline-block;
  background: var(--color-bg, var(--hc-bg));
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: 4px;
  padding: 1px 6px;
  font-family: monospace;
  font-size: 12px;
}

.shortcut-table { border-collapse: collapse; width: 100%; }
.shortcut-table td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--color-border, var(--hc-border));
  font-size: 14px;
}
.shortcut-table td:first-child { width: 160px; }

.faq-filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.faq-filter-btn {
  background: var(--color-bg, var(--hc-bg));
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: 16px;
  padding: 4px 14px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.faq-filter-btn.active,
.faq-filter-btn:hover {
  background: var(--color-primary, var(--hc-primary));
  color: #fff;
  border-color: var(--color-primary, var(--hc-primary));
}

.faq-item {
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: var(--hc-radius);
  margin-bottom: 8px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: var(--color-surface, var(--hc-surface));
  border: none;
  text-align: left;
  padding: 14px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.faq-question:hover { background: var(--color-bg-hover, #f0ece2); }
.faq-chevron { transition: transform 0.2s; font-size: 12px; flex-shrink: 0; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }

.faq-answer {
  display: none;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--color-text-secondary, var(--hc-text-secondary));
  border-top: 1px solid var(--color-border, var(--hc-border));
  background: var(--color-surface, var(--hc-surface));
  white-space: pre-line;
}

.faq-item.open .faq-answer { display: block; }

.btn-cancel {
  background: none;
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: 6px;
  padding: 7px 16px;
  cursor: pointer;
  font-size: 14px;
}

.btn-save {
  background: var(--color-primary, var(--hc-primary));
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 7px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
}

.contact-card {
  background: var(--color-surface, var(--hc-surface));
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: var(--hc-radius);
  padding: 24px;
  margin-bottom: 16px;
}

.contact-card h3 { margin: 0 0 8px; font-size: 16px; }
.contact-card p { margin: 4px 0; color: var(--color-text-secondary, var(--hc-text-secondary)); font-size: 14px; }
.contact-reply-note { margin-top: 12px; }

.contact-email {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary, var(--hc-primary));
  text-decoration: none;
}

.contact-email:hover { text-decoration: underline; }

.btn-open-feedback {
  margin-top: 16px;
  background: var(--color-primary, var(--hc-primary));
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  width: 100%;
}

.btn-open-feedback:hover { opacity: 0.9; }

.feedback-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.feedback-overlay.visible { display: flex; }

.feedback-box {
  background: #fff;
  border-radius: 12px;
  width: 440px;
  max-width: 92vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  overflow: hidden;
}

.feedback-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border, var(--hc-border));
  font-weight: 600;
  font-size: 15px;
}

.feedback-box-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: #999;
  line-height: 1;
}

.feedback-box-body { padding: 16px 20px; }

.fb-form-group { margin-bottom: 14px; }
.fb-form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; }

.fb-radio-group { display: flex; flex-wrap: wrap; gap: 8px; }

.fb-radio-btn {
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: 16px;
  padding: 4px 14px;
  cursor: pointer;
  font-size: 13px;
  background: var(--color-bg, var(--hc-bg));
  transition: all 0.2s;
}

.fb-radio-btn.selected {
  background: var(--color-primary, var(--hc-primary));
  color: #fff;
  border-color: var(--color-primary, var(--hc-primary));
}

.fb-stars { display: flex; gap: 4px; }

.fb-star {
  font-size: 24px;
  cursor: pointer;
  color: #ddd;
  transition: color 0.15s;
  line-height: 1;
}

.fb-star.lit { color: #f5c842; }

.fb-textarea {
  width: 100%;
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  min-height: 80px;
  box-sizing: border-box;
}

.fb-textarea:focus { outline: none; border-color: var(--color-primary, var(--hc-primary)); }

.feedback-box-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 12px 20px;
  border-top: 1px solid var(--color-border, var(--hc-border));
}

.fb-email-input {
  width: 100%;
  border: 1px solid var(--color-border, var(--hc-border));
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 14px;
  font-family: inherit;
  box-sizing: border-box;
}

.fb-error { color: #dc3545; font-size: 13px; margin-top: 8px; display: none; }
.fb-success { text-align: center; padding: 24px 20px; color: #28a745; font-size: 15px; }

/* Main-page feedback modal styles are in css/feedback-modal.css */