/* 电子相册 — 现代简约 · 高级质感 · 响应式 */

/* 国内字体源（俏皮手写风），双 CDN 兜底 + swap 避免阻塞 */
@font-face {
  font-family: "CuteAlbumFont";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src:
    local("LXGW WenKai Screen"),
    local("霞鹜文楷 屏幕阅读版"),
    url("https://cdn.bootcdn.net/ajax/libs/lxgw-wenkai-screen-webfont/1.7.0/lxgwwenkaiscreen-regular.woff2") format("woff2"),
    url("https://cdn.staticfile.org/lxgw-wenkai-screen-webfont/1.7.0/lxgwwenkaiscreen-regular.woff2") format("woff2");
}

:root {
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-cute: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Nunito", "Quicksand", "Varela Round", sans-serif;
  --bg: #f5f5f7;
  --bg-subtle: #eeeef0;
  --surface: #ffffff;
  --surface-elevated: rgba(255, 255, 255, 0.82);
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #aeaeb2;
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-soft: rgba(0, 113, 227, 0.08);
  --danger: #ff3b30;
  --danger-soft: rgba(255, 59, 48, 0.08);
  --danger-hover: #e6352b;
  --border: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
  --shadow-accent: 0 10px 28px rgba(0, 113, 227, 0.28), 0 4px 12px rgba(0, 113, 227, 0.2);
  --nav-h: 64px;
  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.2, 0.88, 0.32, 1.28);
  --dur-fast: 160ms;
  --dur-base: 280ms;
  --dur-slow: 520ms;
  --transition: var(--dur-base) var(--ease-standard);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  padding-top: var(--nav-h);
  overflow-x: hidden;
  padding-bottom: env(safe-area-inset-bottom, 0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 俏皮可爱字体：顶部标题 + 首页相册筛选 */
.app-navbar .navbar-brand [data-site-title],
#albumFilters .filter-pill {
  font-family: var(--font-cute);
  letter-spacing: 0.02em;
}

.app-navbar .navbar-brand [data-site-title] {
  display: inline-block;
  font-weight: 500;
  color: #5b6cff;
  background: linear-gradient(120deg, #ff6fa2, #8f7cff, #37b6ff, #ff6fa2);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation:
    cute-title-float 4.6s ease-in-out infinite,
    cute-title-shine 7.2s linear infinite;
  transition: transform var(--dur-base) var(--ease-spring), filter var(--dur-base) var(--ease-standard);
}

.app-navbar .navbar-brand:hover [data-site-title] {
  transform: translateY(-1px) scale(1.03) rotate(-1.2deg);
  filter: drop-shadow(0 4px 10px rgba(255, 111, 162, 0.26));
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .app-navbar .navbar-brand [data-site-title] {
    color: #5b6cff;
    background: none;
  }
}

#albumFilters .filter-pill {
  font-weight: 400;
  font-size: 0.96rem;
}

#albumFilters .filter-pill.filter-pill-album {
  gap: 0.12rem;
}

#albumFilters .filter-pill.filter-pill-album:not(.active) {
  color: #6c63ff;
  background-image: linear-gradient(120deg, #ff6fa2, #8f7cff, #37b6ff, #ff6fa2);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 500;
  animation: cute-title-shine 7.2s linear infinite;
}

#albumFilters .filter-pill.filter-pill-album.active {
  color: #fff !important;
  -webkit-text-fill-color: #fff;
  background: linear-gradient(135deg, #4f5cff, #6f4dff) !important;
  border-color: rgba(86, 74, 255, 0.95) !important;
  background-image: none !important;
  text-shadow: 0 1px 2px rgba(38, 42, 110, 0.4);
  font-weight: 600;
  box-shadow: 0 12px 24px rgba(86, 74, 255, 0.35);
}

#albumFilters .filter-pill.filter-pill-album.active .drag-handle,
#albumFilters .filter-pill.filter-pill-album.active i {
  color: rgba(255, 255, 255, 0.94);
}

#albumFilters .filter-pill.filter-pill-album.active .drag-handle {
  background: rgba(255, 255, 255, 0.18);
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  #albumFilters .filter-pill.filter-pill-album:not(.active) {
    color: #6c63ff;
    background-image: none;
  }
}

@keyframes cute-title-float {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-1.5px) scale(1.012);
  }
}

@keyframes cute-title-shine {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 220% 50%;
  }
}

.reveal-seq {
  opacity: 0;
  transform: translateY(14px) scale(0.985);
  animation: reveal-seq var(--dur-slow) var(--ease-standard) forwards;
  animation-delay: var(--reveal-delay, 0ms);
}

@keyframes reveal-seq {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ---------- 导航 ---------- */
.app-navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1030;
  height: var(--nav-h);
  background: var(--surface-elevated);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.app-navbar .navbar-brand {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--text) !important;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.app-navbar .navbar-brand .brand-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #5856d6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(0, 113, 227, 0.3);
}

.app-navbar .nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.45rem 0.85rem !important;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}

.app-navbar .nav-link:hover {
  color: var(--text) !important;
  background: var(--accent-soft);
}

.app-navbar .nav-link.active {
  color: #fff !important;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(0, 113, 227, 0.25);
}

.app-navbar .navbar-toggler {
  border-color: var(--border-strong);
  padding: 0.3rem 0.5rem;
  border-radius: 8px;
}

.app-navbar .navbar-toggler-icon {
  --bs-navbar-toggler-icon-bg: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(29,29,31,0.6)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  background-image: var(--bs-navbar-toggler-icon-bg);
}

a.btn-soft-primary {
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
}

.app-navbar .container,
body > .container {
  padding-left: max(0.75rem, env(safe-area-inset-left, 0px));
  padding-right: max(0.75rem, env(safe-area-inset-right, 0px));
}

/* ---------- 工具条 / 筛选 ---------- */
.toolbar-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.album-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.filter-pill {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    color var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    background var(--dur-base) var(--ease-standard);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transform: translateY(0) scale(1);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.filter-pill:hover {
  color: var(--text);
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(0, 113, 227, 0.14), rgba(88, 86, 214, 0.14));
  box-shadow: 0 10px 22px rgba(0, 113, 227, 0.2);
  transform: translateY(-2px) scale(1.02);
}

.filter-pill:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 4px 12px rgba(0, 113, 227, 0.16);
}

.filter-pill.active {
  background: linear-gradient(135deg, var(--accent), #4f7dff);
  color: #fff;
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.filter-pill.active .album-del {
  background: rgba(255, 255, 255, 0.2) !important;
  color: #fff !important;
}

.filter-pill .album-del {
  font-size: 0.7rem;
  line-height: 1;
  padding: 0.12rem 0.3rem;
  border-radius: 4px;
  margin-left: 0.2rem;
  cursor: pointer;
  background: var(--danger-soft);
  color: var(--danger);
  border: none;
  font-weight: 600;
  transition: all 0.2s;
}

.filter-pill .album-del:hover {
  background: var(--danger);
  color: #fff;
}

.btn-soft-primary {
  background: linear-gradient(135deg, #0b84ff, #5b6cff);
  color: #fff;
  border: none;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  box-shadow: var(--shadow-accent);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    filter var(--dur-fast) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard);
  transform: translateY(0) scale(1);
}

.btn-soft-primary:hover {
  background: linear-gradient(135deg, #1a8cff, #6b72ff);
  color: #fff;
  box-shadow: 0 18px 34px rgba(0, 113, 227, 0.3), 0 8px 18px rgba(49, 96, 255, 0.2);
  transform: translateY(-2px) scale(1.02);
}

.btn-soft-primary:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 8px 18px rgba(0, 113, 227, 0.24);
  filter: saturate(0.94);
}

.btn-soft-outline {
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--border-strong);
  font-weight: 500;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    color var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    background var(--dur-base) var(--ease-standard);
  transform: translateY(0) scale(1);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.btn-soft-outline:hover {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(0, 113, 227, 0.12), rgba(88, 86, 214, 0.12));
  color: var(--accent);
  transform: translateY(-2px) scale(1.015);
  box-shadow: 0 12px 24px rgba(0, 113, 227, 0.16);
}

.btn-soft-outline:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 4px 10px rgba(0, 113, 227, 0.12);
}

.input-group .btn-soft-outline.rounded-end {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0 !important;
}

/* ---------- 瀑布流 ---------- */
.masonry {
  column-count: 2;
  column-gap: 0.75rem;
}

@media (min-width: 576px) { .masonry { column-count: 3; } }
@media (min-width: 992px) { .masonry { column-count: 4; } }
@media (min-width: 1400px) { .masonry { column-count: 5; } }

.masonry-item {
  break-inside: avoid;
  margin-bottom: 0.75rem;
}

.masonry.photo-sort-mode {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  column-count: auto;
}

@media (min-width: 576px) { .masonry.photo-sort-mode { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 992px) { .masonry.photo-sort-mode { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1400px) { .masonry.photo-sort-mode { grid-template-columns: repeat(5, minmax(0, 1fr)); } }

.masonry.photo-sort-mode .masonry-item {
  margin-bottom: 0;
}

.masonry.photo-ordered-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  column-count: auto;
}

@media (min-width: 576px) { .masonry.photo-ordered-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 992px) { .masonry.photo-ordered-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1400px) { .masonry.photo-ordered-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); } }

.masonry.photo-ordered-grid .masonry-item {
  margin-bottom: 0;
}

/* 照片入场动画 */
.masonry-item {
  opacity: 0;
  transform: translateY(24px) scale(0.97);
  transition:
    opacity var(--dur-slow) var(--ease-standard),
    transform var(--dur-slow) var(--ease-spring);
  transition-delay: var(--item-delay, 0ms);
}

.masonry-item.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.photo-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
  cursor: pointer;
  transform: translateY(0) scale(1);
  will-change: transform;
}

.photo-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 26px 56px rgba(15, 23, 42, 0.14), 0 10px 24px rgba(15, 23, 42, 0.1);
  border-color: rgba(0, 113, 227, 0.2);
}

.photo-card:active {
  transform: translateY(-2px) scale(0.994);
}

.photo-card-img-wrap {
  position: relative;
  overflow: hidden;
  background: var(--bg-subtle);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  cursor: zoom-in;
  opacity: 0;
  filter: blur(8px);
  transform: scale(1.04);
  transition:
    transform 0.6s var(--ease-spring),
    opacity 0.45s var(--ease-standard),
    filter 0.45s var(--ease-standard);
}

.photo-card-img-wrap img.is-loaded {
  opacity: 1;
  filter: blur(0);
  transform: scale(1);
}

.photo-card:hover .photo-card-img-wrap img {
  transform: scale(1.06);
}

.photo-drag-handle {
  position: absolute;
  top: 0.55rem;
  left: 0.55rem;
  z-index: 2;
  width: 2rem;
  height: 2rem;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--text);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  cursor: grab;
}

.photo-drag-handle:active {
  cursor: grabbing;
}

.masonry.photo-sort-mode .photo-drag-handle {
  display: inline-flex;
}

.masonry.photo-sort-mode .photo-card-img-wrap img {
  cursor: grab;
}

.photo-meta {
  padding: 0.55rem 0.75rem 0.2rem;
}

.photo-meta .badge-album {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.photo-meta .filename {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 0.3rem;
  line-height: 1.35;
  word-break: break-all;
}

.photo-actions {
  padding: 0 0.75rem 0.75rem;
  display: flex;
  justify-content: flex-end;
}

.btn-delete-photo {
  border: none;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.2s;
}

.btn-delete-photo:hover {
  background: var(--danger);
  color: #fff;
}

/* ---------- 空状态 ---------- */
.empty-state {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
  text-align: center;
  border: 2px dashed var(--border-strong);
  color: var(--text-secondary);
  font-weight: 500;
}

.empty-state .empty-emoji {
  font-size: 2.5rem;
  line-height: 1.2;
  display: block;
  margin-bottom: 0.5rem;
}

.empty-state a { color: var(--accent); font-weight: 500; }

/* ---------- 加载遮罩 ---------- */
.page-loading {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(245, 245, 247, 0.85);
  backdrop-filter: blur(12px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1rem;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}

.page-loading.is-visible { opacity: 1; pointer-events: auto; }

.page-loading .spinner-ring {
  width: 40px; height: 40px;
  border: 2.5px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.page-loading .loading-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

@keyframes spin { to { transform: rotate(360deg); } }

.inline-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 2.5rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.inline-loader .spinner-ring {
  width: 28px; height: 28px;
  border-width: 2px;
}

/* ---------- 灯箱预览 ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 3000;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
}

.lightbox.is-open { opacity: 1; visibility: visible; }

.lightbox-backdrop {
  position: absolute; inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(16px);
  cursor: zoom-out;
}

.lightbox-close {
  position: absolute; top: 1rem; right: 1rem; z-index: 2;
  width: 40px; height: 40px;
  border: none; border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff; font-size: 1.4rem; line-height: 1;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.lightbox-inner {
  position: relative; z-index: 1;
  max-width: min(96vw, 1200px);
  max-height: 90vh;
  display: flex; flex-direction: column;
  align-items: center;
  pointer-events: none;
}

.lightbox-inner img {
  max-width: 100%;
  max-height: calc(90vh - 3rem);
  width: auto; height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  pointer-events: auto;
}

.lightbox-caption {
  margin-top: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  text-align: center;
  max-width: 90vw;
  word-break: break-all;
}

/* ---------- 上传页 ---------- */
.upload-page-card {
  max-width: 620px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}

.upload-page-card .card-head {
  padding: 1.25rem 1.5rem 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.upload-page-card .card-head h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.3rem;
}

.upload-page-card .card-head p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.upload-page-card .card-body-inner { padding: 1.5rem; }

.drop-zone {
  position: relative;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 2rem 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 1.25rem;
}

.drop-zone:hover,
.drop-zone.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-zone-input {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}

.drop-zone-visual { pointer-events: none; }

.drop-zone-visual .bi {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: block;
}

.drop-zone-visual h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.3rem;
  color: var(--text);
}

.drop-zone-visual p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.preview-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.preview-thumb {
  width: 68px; height: 68px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 2px solid var(--surface);
  box-shadow: var(--shadow-sm);
}

/* ---------- 表单 ---------- */
.form-label {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text);
}

.form-select,
.form-control {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
}

.form-select:focus,
.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}

.btn-upload-submit {
  width: 100%;
  padding: 0.85rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #0a80ff, #5d6bff);
  color: #fff;
  box-shadow: var(--shadow-accent);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    filter var(--dur-fast) var(--ease-standard);
  transform: translateY(0) scale(1);
}

.btn-upload-submit:hover:not(:disabled) {
  background: linear-gradient(135deg, #1690ff, #6a76ff);
  box-shadow: 0 20px 36px rgba(0, 113, 227, 0.32), 0 8px 18px rgba(49, 96, 255, 0.2);
  transform: translateY(-3px) scale(1.015);
  color: #fff;
}

.btn-upload-submit:active:not(:disabled) {
  transform: translateY(-1px) scale(0.988);
  box-shadow: 0 10px 18px rgba(0, 113, 227, 0.26);
}

.btn-upload-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* ---------- Modal ---------- */
.modal-content {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.modal-header { border-bottom-color: var(--border); }
.modal-title { font-weight: 600; }

.modal-footer .btn-primary {
  background: var(--accent);
  border: none;
  font-weight: 600;
}

/* ---------- Toast ---------- */
.toast-container { z-index: 4000; }
.toast { border-radius: var(--radius-sm); box-shadow: var(--shadow-lg); }

/* ---------- 页脚 ---------- */
.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding: 1.5rem 1rem 2rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.footer a {
  color: var(--text-tertiary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.2s;
}

.footer a:hover { color: var(--accent); }

/* ---------- 拖拽手柄 ---------- */
.drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.15rem;
  padding: 0.1rem;
  color: var(--text-tertiary);
  cursor: grab;
  opacity: 0.5;
  border-radius: 4px;
  transition: opacity 0.2s, background 0.2s;
}

.drag-handle:active { cursor: grabbing; }

.filter-pill:hover .drag-handle {
  opacity: 1;
  background: var(--accent-soft);
}

/* 相册名称前排序手柄：尽量小，名称占主导 */
#albumFilters .drag-handle {
  margin-right: 0.02rem;
  padding: 0 0.08rem;
  line-height: 1;
  flex-shrink: 0;
  align-self: center;
}

#albumFilters .drag-handle i {
  font-size: 0.54rem;
  line-height: 1;
  display: block;
}

.album-sortable-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  flex: 1;
  min-width: 0;
}

.album-photo-tools {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.album-photo-tools .btn-soft-outline.active {
  color: #fff;
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent), #4f7dff);
  box-shadow: var(--shadow-accent);
}

.photo-sort-status {
  min-height: 1.25rem;
  color: var(--text-tertiary);
  font-size: 0.78rem;
}

/* ---------- 页面内 Swiper 轮播 ---------- */
.inline-carousel-wrap { position: relative; }

.inline-carousel-back {
  position: absolute;
  top: 0.65rem; left: 0.65rem; z-index: 5;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: var(--surface-elevated);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    color var(--dur-fast) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    background var(--dur-base) var(--ease-standard);
  transform: translateY(0) scale(1);
}

.inline-carousel-back:hover {
  color: var(--accent);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(238, 245, 255, 0.96));
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.12);
  transform: translateY(-2px) scale(1.015);
}

.inline-carousel-back:active {
  transform: translateY(0) scale(0.985);
  box-shadow: var(--shadow-sm);
}

.inline-page-swiper {
  width: 100%;
  min-height: 280px;
  height: min(72vh, 720px);
  padding: 2.75rem 0 2.5rem;
}

.inline-page-swiper .swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  opacity: 0.36;
  transform: translateX(20px) scale(0.985);
  transition:
    opacity 0.62s var(--ease-standard),
    transform 0.62s var(--ease-spring);
}

.inline-page-swiper .swiper-slide.swiper-slide-prev {
  transform: translateX(-20px) scale(0.985);
}

.inline-page-swiper .swiper-slide.swiper-slide-active {
  opacity: 1;
  transform: translateX(0) scale(1);
}

.inline-page-swiper .swiper-zoom-container img {
  max-width: 100%;
  max-height: min(68vh, 680px);
  width: auto; height: auto;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(16px) scale(0.985);
  transition:
    opacity 0.55s var(--ease-standard),
    transform 0.55s var(--ease-spring);
}

.inline-page-swiper .swiper-slide.swiper-slide-active .swiper-zoom-container img {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.inline-page-swiper .swiper-button-next,
.inline-page-swiper .swiper-button-prev {
  position: absolute;
  width: 44px; height: 44px;
  margin-top: 0;
  top: 50%;
  transform: translateY(-50%);
  color: transparent;
  background: var(--surface-elevated) !important;
  border: 1px solid var(--border) !important;
  border-radius: 50%;
  box-shadow: var(--shadow) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    background var(--dur-base) var(--ease-standard);
}

.inline-page-swiper .swiper-button-prev { left: 12px; }
.inline-page-swiper .swiper-button-next { right: 12px; }

.inline-page-swiper .swiper-button-next:hover,
.inline-page-swiper .swiper-button-prev:hover {
  transform: translateY(calc(-50% - 2px)) scale(1.08);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(229, 240, 255, 0.98)) !important;
  border-color: rgba(0, 113, 227, 0.24) !important;
  box-shadow: 0 16px 30px rgba(0, 113, 227, 0.18), 0 8px 18px rgba(15, 23, 42, 0.12) !important;
}

.inline-page-swiper .swiper-button-next:active,
.inline-page-swiper .swiper-button-prev:active {
  transform: translateY(-50%) scale(0.96);
  box-shadow: var(--shadow-sm) !important;
}

.inline-page-swiper .swiper-button-disabled {
  opacity: 0.3 !important;
  pointer-events: none;
}

.inline-page-swiper .swiper-button-next::after,
.inline-page-swiper .swiper-button-prev::after {
  position: absolute;
  left: 50%; top: 50%;
  font-size: 1rem !important;
  font-weight: 600;
  font-family: var(--font);
  color: var(--text);
  transform: translate(-50%, -50%);
}

.inline-page-swiper .swiper-button-prev::after { content: "\2039" !important; }
.inline-page-swiper .swiper-button-next::after { content: "\203A" !important; }

.inline-page-swiper .swiper-pagination-bullet {
  width: 8px;
  height: 8px;
  margin: 0 4px !important;
  background: rgba(29, 29, 31, 0.28);
  opacity: 1;
  border-radius: 999px;
  transition:
    width var(--dur-base) var(--ease-standard),
    transform var(--dur-base) var(--ease-spring),
    background var(--dur-base) var(--ease-standard),
    box-shadow var(--dur-base) var(--ease-standard);
}

.inline-page-swiper .swiper-pagination-bullet-active {
  opacity: 1;
  background: var(--accent);
  width: 24px;
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.16);
  animation: bullet-pop 520ms var(--ease-spring);
}

@keyframes bullet-pop {
  0% {
    transform: translateY(-1px) scale(0.84);
  }
  55% {
    transform: translateY(-1px) scale(1.07);
  }
  100% {
    transform: translateY(-1px) scale(1);
  }
}

/* ---------- 删除管理页 ---------- */
.delete-manage-card { max-width: 800px; }

.delete-list {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.delete-list-item {
  background: var(--surface);
  border-color: var(--border) !important;
}

.delete-photo-card {
  border-color: var(--border) !important;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard);
  transform: translateY(0) scale(1);
}

.delete-photo-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: rgba(0, 113, 227, 0.24) !important;
  box-shadow: 0 18px 32px rgba(15, 23, 42, 0.1), 0 8px 16px rgba(15, 23, 42, 0.08);
}

.delete-photo-thumb {
  width: 68px; height: 68px;
  object-fit: cover;
  border-radius: var(--radius-xs);
  background: var(--bg);
  transition: transform var(--dur-base) var(--ease-spring), filter var(--dur-base) var(--ease-standard);
}

.delete-photo-card:hover .delete-photo-thumb {
  transform: scale(1.05);
  filter: saturate(1.06);
}

#deleteTabs .nav-link {
  color: var(--text-secondary);
  border: 1px solid transparent;
  font-weight: 500;
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    background var(--dur-base) var(--ease-standard),
    color var(--dur-base) var(--ease-standard);
  transform: translateY(0) scale(1);
}

#deleteTabs .nav-link:hover {
  color: var(--text);
  background: linear-gradient(135deg, rgba(0, 113, 227, 0.1), rgba(88, 86, 214, 0.1));
  box-shadow: 0 8px 16px rgba(0, 113, 227, 0.12);
  transform: translateY(-2px) scale(1.01);
}

#deleteTabs .nav-link:active {
  transform: translateY(0) scale(0.985);
}

#deleteTabs .nav-link.active {
  background: linear-gradient(135deg, #0b84ff, #5b6cff) !important;
  color: #fff !important;
  font-weight: 600;
  box-shadow: var(--shadow-accent);
}

.delete-list-item .btn-outline-danger,
.delete-photo-card .btn-outline-danger {
  border-color: rgba(255, 59, 48, 0.45);
  color: var(--danger);
  background: rgba(255, 59, 48, 0.04);
  transition:
    transform var(--dur-base) var(--ease-spring),
    box-shadow var(--dur-base) var(--ease-standard),
    border-color var(--dur-base) var(--ease-standard),
    background var(--dur-base) var(--ease-standard),
    color var(--dur-base) var(--ease-standard);
}

.delete-list-item .btn-outline-danger:hover,
.delete-photo-card .btn-outline-danger:hover {
  color: #fff;
  border-color: var(--danger);
  background: linear-gradient(135deg, #ff5b53, #ff3b30);
  box-shadow: 0 12px 22px rgba(255, 59, 48, 0.24);
  transform: translateY(-2px) scale(1.02);
}

.delete-list-item .btn-outline-danger:active,
.delete-photo-card .btn-outline-danger:active {
  transform: translateY(0) scale(0.985);
  box-shadow: 0 6px 12px rgba(255, 59, 48, 0.2);
}

button:focus-visible,
.btn:focus-visible,
a.btn-soft-primary:focus-visible,
a.btn-soft-outline:focus-visible,
.photo-drag-handle:focus-visible,
.filter-pill:focus-visible,
#deleteTabs .nav-link:focus-visible,
.inline-carousel-back:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 2px rgba(255, 255, 255, 0.95),
    0 0 0 5px rgba(0, 113, 227, 0.34),
    var(--shadow-sm);
}

/* ---------- 移动端适配 ---------- */
button, a.filter-pill, .btn, #deleteTabs .nav-link, .inline-carousel-back, .photo-drag-handle {
  touch-action: manipulation;
}

@media (max-width: 576px) {
  :root { --nav-h: 56px; }

  /* 相册筛选：横向滑动一行，避免大块垂直占位 */
  #albumFilters {
    display: flex !important;
    flex-wrap: nowrap;
    align-items: center;
    gap: 0.4rem;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    scrollbar-width: thin;
    padding-bottom: 0.15rem;
    margin-inline: -0.25rem;
    padding-inline: 0.25rem;
  }

  #albumFilters > .filter-pill {
    flex: 0 0 auto;
    width: auto;
    justify-content: center;
  }

  #albumSortable.album-sortable-inner {
    margin-top: 0;
    flex: 0 0 auto !important;
    width: auto;
    min-width: 0;
    display: flex !important;
    flex-wrap: nowrap;
    gap: 0.4rem;
    align-items: center;
  }

  #albumSortable .filter-pill-album {
    flex: 0 0 auto;
    width: auto;
    justify-content: flex-start;
    min-width: 0;
    max-width: min(72vw, 280px);
  }

  #albumSortable .filter-pill-album .album-pill-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
  }

  #albumFilters .filter-pill {
    font-size: 0.92rem;
  }

  #albumFilters .drag-handle {
    min-width: 0;
    min-height: 0;
    padding: 0.22rem 0.06rem;
    margin-right: 0;
  }

  #albumFilters .drag-handle i {
    font-size: 0.5rem;
  }

  .app-navbar .navbar-brand {
    font-size: clamp(0.85rem, 3.8vw, 1rem);
    max-width: calc(100vw - 1.75rem);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .app-navbar .navbar-brand .brand-icon {
    width: 30px; height: 30px;
    flex-shrink: 0;
  }

  .toolbar-card {
    padding: 0.55rem 0.65rem;
    margin-bottom: 0.65rem;
  }

  .home-page > .container.pt-2 {
    padding-top: 0.5rem !important;
  }

  .filter-pill {
    min-height: 38px;
    padding: 0.28rem 0.65rem;
    font-size: 0.78rem;
  }

  .drag-handle {
    min-width: 28px;
    min-height: 28px;
    padding: 0.15rem;
  }

  .album-photo-tools {
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 0.45rem;
    padding-top: 0.45rem;
  }

  .photo-drag-handle {
    width: 2.5rem;
    height: 2.5rem;
  }

  .masonry { column-gap: 0.5rem; }
  .masonry-item { margin-bottom: 0.5rem; }
  .masonry.photo-sort-mode { gap: 0.5rem; }
  .masonry.photo-ordered-grid { gap: 0.5rem; }

  .inline-page-swiper {
    height: min(58vh, 520px);
    min-height: 220px;
    padding: 3rem 0 2.25rem;
  }

  .inline-page-swiper .swiper-zoom-container img {
    max-height: min(52vh, 440px);
  }

  .inline-carousel-back {
    min-height: 44px;
    padding: 0.4rem 0.75rem;
    display: inline-flex;
    align-items: center;
    top: 0.4rem; left: 0.4rem;
    max-width: calc(100% - 1rem);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .inline-page-swiper .swiper-button-next,
  .inline-page-swiper .swiper-button-prev {
    width: 38px; height: 38px;
  }

  .upload-page-card .card-head { padding: 1rem; }
  .upload-page-card .card-head h2 { font-size: 1.05rem; }
  .upload-page-card .card-body-inner { padding: 1rem; }

  .drop-zone { padding: 1.5rem 1rem; min-height: 150px; }
  .drop-zone-visual .bi { font-size: 2rem; }
  .btn-upload-submit { min-height: 48px; }

  input.form-control, select.form-select, textarea.form-control {
    font-size: 16px;
    min-height: 46px;
  }

  .empty-state { padding: 2rem 1rem; }

  .footer {
    font-size: 0.75rem;
    padding: 1rem max(0.75rem, env(safe-area-inset-left)) 1.25rem max(0.75rem, env(safe-area-inset-right));
    flex-direction: column;
    gap: 0.4rem;
  }

  #deleteTabs { flex-direction: column; align-items: stretch; }
  #deleteTabs .nav-item { width: 100%; }
  #deleteTabs .nav-link { width: 100%; min-height: 46px; justify-content: center; }

  .delete-list-item {
    flex-direction: column;
    align-items: stretch !important;
    gap: 0.75rem;
    padding-top: 0.85rem !important;
    padding-bottom: 0.85rem !important;
  }

  .delete-list-item .btn { width: 100%; min-height: 44px; }
  .delete-photo-card { flex-wrap: wrap; }

  .toast-container {
    left: max(0.5rem, env(safe-area-inset-left));
    right: max(0.5rem, env(safe-area-inset-right));
    bottom: max(0.75rem, env(safe-area-inset-bottom));
  }

  .page-loading { padding-bottom: env(safe-area-inset-bottom); }
}

@media (max-width: 380px) { .masonry { column-count: 1; } }

/* 触控设备 */
@media (hover: none) and (pointer: coarse) {
  .photo-card:hover { transform: none; box-shadow: var(--shadow); }
  .photo-card:active { opacity: 0.95; }
  .photo-card:hover .photo-card-img-wrap img { transform: none; }
  .drop-zone:hover { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }

  .reveal-seq,
  .masonry-item {
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
  }
}