/* ═══════════════════════════════════════
   NOTES.CSS - 笔记本页
   ═══════════════════════════════════════ */

/* 笔记本顶部控制 */
#notes-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  flex-shrink: 0;
}

.notes-title {
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.new-note-btn {
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--ink-faint);
  cursor: pointer;
  letter-spacing: 0.04em;
  border: none;
  background: none;
  font-family: var(--font-ui);
  transition: color 0.2s;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

.new-note-btn:hover {
  color: var(--ink);
}

/* ─── 空状态 ─── */
.notes-empty {
  padding: 60px 0;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--ink-ghost);
  letter-spacing: 0.08em;
  line-height: 2.2;
}

/* ─── 笔记分组 ─── */
.note-group {
  margin-top: 0;
}

.note-group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.note-group-left {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.note-group-title {
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.note-group-count {
  font-size: 0.68rem;
  font-weight: 300;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

/* 折叠箭头 SVG */
.note-group-arrow {
  display: flex;
  align-items: center;
  color: var(--ink-faint);
  transition: transform 0.25s;
  flex-shrink: 0;
}

.note-group.collapsed .note-group-arrow {
  transform: rotate(-90deg);
}

.note-group.collapsed .note-list {
  display: none;
}

/* ─── 笔记列表 ─── */
.note-list {
  display: flex;
  flex-direction: column;
}

.note-item {
  padding: 15px 0;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  transition: opacity 0.2s;
}

.note-item:hover {
  opacity: 0.65;
}

/* 原文摘录 - 斜体 + 左细线 */
.note-quote {
  font-size: 0.83rem;
  font-style: italic;
  color: var(--ink-mid);
  margin-bottom: 8px;
  padding-left: 10px;
  border-left: 2px solid var(--rule);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 笔记正文预览 */
.note-preview {
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--ink-mid);
  line-height: 1.6;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 6px;
}

/* 底部元数据行：类型标记 + 标签 + 时间戳 */
.note-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

/* 类型徽章 */
.note-type-badge {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 1px 6px;
  border-radius: 2px;
  white-space: nowrap;
  flex-shrink: 0;
}

.note-type-highlight  { background: rgba(245,232,122,0.25); color: var(--ink-mid); border: 1px solid rgba(245,232,122,0.5); }
.note-type-free       { background: transparent; color: var(--ink-ghost); border: 1px solid var(--rule); }
.note-type-ai_excerpt { background: rgba(100,160,255,0.12); color: var(--ink-mid); border: 1px solid rgba(100,160,255,0.3); }
.note-type-chat_fold  { background: rgba(160,220,160,0.15); color: var(--ink-mid); border: 1px solid rgba(160,220,160,0.35); }
.note-type-note       { background: transparent; color: var(--ink-ghost); border: 1px solid var(--rule); }
.note-type-ai         { background: rgba(100,160,255,0.12); color: var(--ink-mid); border: 1px solid rgba(100,160,255,0.3); }

.note-time {
  font-size: 0.62rem;
  font-weight: 300;
  color: var(--ink-ghost);
  letter-spacing: 0.04em;
  margin-left: auto;
}

/* ─── 标签 ─── */
.note-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.note-tag {
  font-size: 0.6rem;
  font-weight: 300;
  color: var(--ink-faint);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 0 5px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  line-height: 1.6;
  border-radius: 2px;
}

.note-tag:hover {
  color: var(--ink);
  border-color: var(--ink-faint);
}

/* ─── 标签过滤栏 ─── */
.notes-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 0;
}

.note-tag-filter-btn {
  font-size: 0.65rem;
  font-weight: 300;
  color: var(--ink-faint);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 2px 8px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font-ui);
  border-radius: 2px;
  -webkit-tap-highlight-color: transparent;
}

.note-tag-filter-btn:hover,
.note-tag-filter-btn.active {
  color: var(--ink);
  border-color: var(--ink-mid);
  background: var(--rule);
}

/* ─── 笔记操作行 ─── */
.note-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  opacity: 0;
  transition: opacity 0.15s;
}

.note-item:hover .note-actions {
  opacity: 1;
}

/* 移动端始终显示操作栏 */
@media (hover: none) {
  .note-actions {
    opacity: 1;
  }
}

.note-act-btn {
  font-size: 0.62rem;
  font-weight: 300;
  color: var(--ink-faint);
  background: transparent;
  border: 1px solid var(--rule);
  padding: 2px 7px;
  cursor: pointer;
  transition: color 0.15s;
  font-family: var(--font-ui);
  border-radius: 2px;
  -webkit-tap-highlight-color: transparent;
  letter-spacing: 0.03em;
}

.note-act-btn:hover {
  color: var(--ink);
}

.note-act-del:hover {
  color: #e55;
  border-color: #e55;
}

/* ─── 自由笔记编辑器（全屏覆盖） ─── */
#free-note-editor {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 1000;
  display: none;
  flex-direction: column;
  padding: 0;
}

#free-note-editor.active {
  display: flex;
}

/* 自由笔记顶部栏 */
#free-note-header {
  height: 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid var(--rule);
  flex-shrink: 0;
}

#free-note-close {
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--ink-faint);
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

#free-note-close:hover {
  color: var(--ink);
}

#free-note-save {
  font-size: 0.72rem;
  font-weight: 300;
  color: var(--ink-faint);
  cursor: pointer;
  letter-spacing: 0.04em;
  border: none;
  background: none;
  font-family: var(--font-ui);
  transition: color 0.2s;
  padding: 0;
}

#free-note-save:hover {
  color: var(--ink);
}

/* 正文区 - 灵感之海「手记」风格 */
#free-note-textarea {
  flex: 1;
  width: 100%;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  color: var(--ink);
  line-height: 2;
  letter-spacing: 0.02em;
  resize: none;
  padding: 24px 24px;
  padding-bottom: calc(24px + env(safe-area-inset-bottom));
  -webkit-overflow-scrolling: touch;
}

#free-note-textarea::placeholder {
  color: var(--ink-ghost);
}

/* 底部状态栏 */
#free-note-footer {
  padding: 10px 20px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
}

#free-note-count {
  font-size: 0.68rem;
  font-weight: 300;
  color: var(--ink-ghost);
  letter-spacing: 0.04em;
}