:root {
  --bg: #f7f7f8;
  --panel: #ffffff;
  --text: #2a2a2e;
  --muted: #8a8a92;
  --border: #ececef;
  --accent: #e175a8;
  --accent-dark: #cf5f92;
  --danger: #d65a5a;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 20, 30, 0.04), 0 4px 16px rgba(20, 20, 30, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.no-scroll { overflow: hidden; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.brand h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand .sub {
  font-size: 12px;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 4px;
  background: #efeff2;
  border-radius: 10px;
  padding: 4px;
}

.tab {
  border: none;
  background: transparent;
  padding: 7px 18px;
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  transition: all 0.15s ease;
}

.tab.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  font-weight: 600;
}

/* ---------- 布局 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.view { display: none; }
.view.active { display: block; }

/* ---------- 筛选器 ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text);
  transition: all 0.15s ease;
}

.chip:hover { border-color: var(--accent); color: var(--accent-dark); }

.chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.chip .count {
  font-size: 11px;
  opacity: 0.7;
}

/* ---------- 相册网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  grid-auto-rows: 200px;
  gap: 12px;
}

.thumb {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: zoom-in;
  background: #e9e9ec;
  position: relative;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease, opacity 0.4s ease;
  opacity: 0;
}

.thumb img.loaded { opacity: 1; }

.thumb:hover img { transform: scale(1.06); }

/* ---------- 加载更多 / 空态 ---------- */
.load-more {
  display: block;
  margin: 28px auto 0;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 10px 34px;
  border-radius: 999px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text);
  transition: all 0.15s ease;
}

.load-more:hover { border-color: var(--accent); color: var(--accent-dark); }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 48px 0;
}

/* ---------- 备忘录 ---------- */
.memo-composer {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.memo-composer textarea {
  width: 100%;
  min-height: 96px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s ease;
}

.memo-composer textarea:focus { border-color: var(--accent); }

.memo-composer button,
.memo-btn {
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.memo-composer button {
  margin-top: 12px;
  float: right;
}

.memo-composer button:hover { background: var(--accent-dark); }

.memo-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.memo-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.memo-text {
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 15px;
}

.memo-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 10px;
}

.memo-time {
  font-size: 12px;
  color: var(--muted);
}

.memo-actions { display: flex; gap: 6px; }

.memo-btn {
  padding: 5px 14px;
  font-size: 13px;
  background: #efeff2;
  color: var(--text);
}

.memo-btn:hover { background: #e4e4e9; }

.memo-btn.primary { background: var(--accent); color: #fff; }
.memo-btn.primary:hover { background: var(--accent-dark); }

.memo-btn.danger { color: var(--danger); background: transparent; }
.memo-btn.danger:hover { background: #fdecec; }

.memo-edit {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.memo-edit textarea {
  width: 100%;
  min-height: 80px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
}

.memo-edit textarea:focus { border-color: var(--accent); }

.memo-edit-actions { display: flex; gap: 8px; justify-content: flex-end; }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(12, 12, 16, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox[hidden] { display: none; }

.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 4px;
}

.lb-close {
  position: absolute;
  top: 18px;
  right: 24px;
  font-size: 40px;
  line-height: 1;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.85;
  transition: opacity 0.15s ease;
}

.lb-close:hover { opacity: 1; }

.lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 44px;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.7;
  padding: 16px;
  transition: opacity 0.15s ease;
}

.lb-nav:hover { opacity: 1; }
.lb-prev { left: 8px; }
.lb-next { right: 8px; }

.lb-caption {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 13px;
  opacity: 0.85;
  text-align: center;
  max-width: 80vw;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .container { padding: 16px; }
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    grid-auto-rows: 140px;
    gap: 8px;
  }
  .topbar { padding: 12px 16px; }
}