/* ==========================================================================
   反馈（Feedback）样式 —— 贴合站点主题变量，深/浅色自动适配
   ========================================================================== */

/* 右下角悬浮入口 */
.fb-fab {
  position: fixed;
  right: 22px;
  bottom: 84px;
  z-index: 55;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 15px;
  border: 1px solid var(--accent-line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text-strong);
  font: 600 13.5px/1 var(--font-sans);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease),
    box-shadow 0.16s var(--ease);
}
.fb-fab:hover { transform: translateY(-2px); border-color: var(--accent); box-shadow: var(--shadow); }
.fb-fab svg { opacity: 0.9; }
.fb-fab .fb-fab-label { display: inline; }

/* 弹层遮罩 */
.fb-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(4, 8, 12, 0.5);
  backdrop-filter: blur(3px);
}
.fb-overlay.open { display: flex; }

/* 弹层卡片 */
.fb-modal {
  width: min(560px, 100%);
  max-height: 88vh;
  overflow: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  color: var(--text);
}
.fb-modal h3 {
  margin: 0 0 4px;
  font-size: 17px;
  color: var(--text-strong);
}
.fb-modal .fb-sub {
  margin: 0 0 14px;
  font-size: 12.5px;
  color: var(--muted);
}

/* 方式切换标签（邮箱 / GitHub） */
.fb-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}
.fb-tab {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font: 600 13px/1 var(--font-sans);
  cursor: pointer;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease),
    background 0.16s var(--ease);
}
.fb-tab:hover { color: var(--text); border-color: var(--muted); }
.fb-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #06131c;
}

/* 收件邮箱展示（方式一：邮箱）—— 块级卡片式排版，桌面与移动端自适应 */
.fb-recip {
  margin-bottom: 12px;
  padding: 12px 13px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 12.5px;
}
.fb-recip-label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-weight: 600;
  line-height: 1.5;
}
.fb-recip-item {
  display: block;
  padding: 8px 11px 10px;
  margin-bottom: 9px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
}
.fb-recip-item:last-of-type { margin-bottom: 0; }
.fb-recip-item b {
  display: block;
  margin-bottom: 4px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--text-strong);
}
.fb-recip-item .fb-mail {
  display: inline-block;
  max-width: 100%;
  padding: 4px 10px;
  border: 1px solid var(--accent-line);
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--text-strong);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.5;
  word-break: break-all;
  user-select: all;
}
.fb-recip-item a.fb-mail {
  border-style: dashed;
  background: transparent;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.fb-recip-item a.fb-mail:hover { opacity: 0.85; background: var(--accent-soft); }

@media (max-width: 480px) {
  .fb-recip { padding: 10px 11px; }
  .fb-recip-item { padding: 7px 9px 9px; }
  .fb-recip-item b { font-size: 13px; }
  .fb-recip-item .fb-mail { font-size: 12.5px; }
}
.fb-modal textarea {
  width: 100%;
  min-height: 130px;
  resize: vertical;
  box-sizing: border-box;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 var(--font-sans);
}
.fb-modal textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* 图片区 */
.fb-imgs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.fb-upload {
  width: 84px;
  height: 84px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
  background: transparent;
}
.fb-upload:hover { border-color: var(--accent); color: var(--accent); }
.fb-thumb {
  position: relative;
  width: 84px;
  height: 84px;
}
.fb-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
}
.fb-del {
  position: absolute;
  top: -7px;
  right: -7px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: none;
  background: #e5484d;
  color: #fff;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
}
.fb-thumb:hover .fb-del { display: flex; }
.fb-del:hover { background: #c9353a; }

/* 底部操作区 */
.fb-actions { display: flex; align-items: center; gap: 10px; margin-top: 16px; }
.fb-note { flex: 1; font-size: 12px; color: var(--muted); line-height: 1.5; }
.fb-btn {
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-sm);
  font: 600 14px/1 var(--font-sans);
  cursor: pointer;
  transition: opacity 0.16s var(--ease);
  white-space: nowrap;
}
.fb-btn.primary { background: var(--accent); color: #06131c; }
.fb-btn.primary:hover { opacity: 0.88; }
.fb-btn.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}
.fb-btn.secondary:hover { color: var(--text); border-color: var(--muted); }
.fb-btn:disabled { opacity: 0.45; cursor: not-allowed; }

/* 状态提示 */
.fb-tip {
  display: none;
  margin-top: 12px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-line);
  background: var(--accent-soft);
  color: var(--text);
  font-size: 12.5px;
  line-height: 1.6;
}
.fb-tip.show { display: block; }
.fb-tip.error { border-color: #e5484d; background: rgba(229, 72, 77, 0.1); color: #ff9a9e; }
.fb-tip code { background: var(--code-bg); padding: 0 4px; border-radius: 4px; }