/* ============================================================
   信纸风分享卡片 - 浮动按钮与弹层 (card.css)
   复用 style.css 的 CSS 变量，与主题协调
   ============================================================ */

/* ---------- 浮动「生成卡片」按钮（桌面选区触发） ---------- */
.card-fab {
  position: fixed;
  display: none;
  z-index: 9998;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--serif);
  font-size: .9rem;
  letter-spacing: .05em;
  padding: .5em 1.1em;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
  transition: border-color .15s ease, transform .1s ease;
  user-select: none;
  white-space: nowrap;
}
.card-fab.visible { display: inline-block; }
.card-fab:hover { border-color: var(--ink); transform: translateY(-1px); }
.card-fab:active { transform: translateY(0); }

/* ---------- 移动端底部「生成卡片」入口（iOS 选区菜单遮挡兜底） ---------- */
.card-mobile-entry {
  display: none;
  margin: 2.5rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  text-align: center;
}
.card-mobile-entry .card-mobile-btn {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--serif);
  font-size: .95rem;
  padding: .55em 1.4em;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .15s ease;
}
.card-mobile-entry .card-mobile-btn:hover { border-color: var(--ink); }
.card-mobile-entry .card-mobile-hint {
  display: block;
  margin-top: .6rem;
  font-size: .8rem;
  color: var(--muted);
}
@media (max-width: 640px) {
  .card-mobile-entry { display: block; }
}

/* ---------- 预览 / 编辑弹层 ---------- */
.card-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(58, 53, 46, .55);
}
.card-modal.open { display: flex; }

.card-modal-inner {
  position: relative;
  width: 100%;
  max-width: 480px;
  max-height: 92vh;
  overflow-y: auto;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, .18);
  padding: 1.75rem 1.5rem 1.5rem;
}
.card-modal-close {
  position: absolute;
  top: .35rem;
  right: .55rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  padding: .25rem .5rem;
}
.card-modal-close:hover { color: var(--ink); }

.card-modal-title {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ink);
  text-align: center;
}

/* 阶段切换：编辑 / 预览 */
.card-stage { display: none; }
.card-stage.active { display: block; }

/* 编辑阶段 */
.card-edit-text {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  box-sizing: border-box;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: #fff;
  color: var(--text);
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1.7;
  padding: .75rem .9rem;
}
.card-edit-text:focus { outline: none; border-color: var(--ink); }

/* 预览阶段 */
.card-preview {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid var(--rule);
}
.card-actions {
  display: flex;
  gap: .75rem;
  margin-top: 1rem;
}
.card-btn {
  flex: 1;
  background: var(--paper-card);
  border: 1px solid var(--rule);
  color: var(--text);
  font-family: var(--serif);
  font-size: .95rem;
  padding: .6em 1em;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease;
}
.card-btn:hover { border-color: var(--ink); color: var(--ink); }
.card-btn-primary {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.card-btn-primary:hover { color: #fff; opacity: .9; }

.card-tip {
  margin: .75rem 0 0;
  text-align: center;
  font-size: .8rem;
  color: var(--muted);
}
.card-tip.desktop-only { display: block; }
.card-tip.mobile-only { display: none; }
@media (max-width: 640px) {
  .card-tip.desktop-only { display: none; }
  .card-tip.mobile-only { display: block; }
}

/* 移动端弹层内边距收紧 */
@media (max-width: 640px) {
  .card-modal { padding: .5rem; }
  .card-modal-inner { padding: 1.5rem 1rem 1.25rem; }
}

/* 尊重减少动效 */
@media (prefers-reduced-motion: reduce) {
  .card-fab, .card-btn, .card-mobile-entry .card-mobile-btn { transition: none; }
}