* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #dedede;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: #222;
  padding: 20px;
}

.app {
  width: 100%;
  min-height: calc(100vh - 20px);
  display: flex;
  gap: 12px;
}

/* 左侧栏 */

.sidebar {
  width: 350px;
  flex-shrink: 0;
  background: #f7f7f7;
  border: 1px solid #cfcfcf;
  border-radius: 20px;
  padding: 18px 14px;
  overflow: auto;
}

.window-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 24px;
  color: #222;
}

.dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.red {
  background: #ff5f57;
}

.yellow {
  background: #ffbd2e;
}

.green {
  background: #28c840;
}

.section-title {
  margin: 18px 0 8px;
  font-size: 11px;
  color: #8e8e8e;
}

.menu {
  height: 30px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 9px;
  font-size: 14px;
  border-radius: 6px;
  color: #111;
  cursor: pointer;
}

.menu:hover {
  background: #eeeeee;
}

.menu.active {
  background: #e2e2e2;
  color: #1677ff;
  font-weight: 600;
}

/* 左侧图标统一盒子 */
.icon-box {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* SVG 图标统一尺寸 */
.menu-icon {
  width: 15px !important;
  height: 15px !important;
  max-width: 15px !important;
  max-height: 15px !important;
  object-fit: contain;
  display: block;
}

/* 右侧主区域 */

.main {
  flex: 1;
  background: #fff;
  border: 1px solid #cfcfcf;
  border-radius: 20px;
  padding: 50px 42px;
  overflow: auto;
}

.content {
  width: 100%;
}

.row {
  display: grid;
  grid-template-columns: repeat(auto-fill, 170px);
  column-gap: 70px;
  row-gap: 44px;
  padding-bottom: 42px;
  margin-bottom: 42px;
  border-bottom: 1px solid #ddd;
}

.row:last-child {
  border-bottom: none;
}

.file,
.folder {
  width: 170px;
  text-align: center;
  color: #8b8b8b;
  font-size: 14px;
}

.file p,
.folder p {
  margin: 18px 0 0;
  line-height: 19px;
}

/* 文件图标 */

.file-icon {
  width: 82px;
  height: 110px;
  margin: 0 auto;
  background: linear-gradient(145deg, #ffffff, #eeeeee);
  border: 1px solid #d6d6d6;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.18);
}

.file-icon::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 36px;
  height: 36px;
  background: linear-gradient(
    135deg,
    #fafafa 0%,
    #fafafa 50%,
    #dcdcdc 50%,
    #dcdcdc 100%
  );
  border-left: 1px solid #d4d4d4;
  border-bottom: 1px solid #d4d4d4;
  box-shadow: -2px 2px 5px rgba(0, 0, 0, 0.08);
}

.quote-mark {
  position: absolute;
  left: 26px;
  top: 42px;
  color: #ff553f;
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
}

.quote-lines {
  position: absolute;
  left: 28px;
  top: 67px;
  width: 38px;
}

.quote-lines span {
  display: block;
  height: 3px;
  background: #ff553f;
  margin-bottom: 7px;
  border-radius: 2px;
}

.pdf-shape {
  position: absolute;
  left: 25px;
  top: 42px;
  width: 42px;
  height: 42px;
}

.pdf-shape::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: #aaa;
}

.pdf-shape span {
  position: absolute;
  left: 25px;
  width: 25px;
  height: 4px;
  background: #aaa;
  border-radius: 3px;
}

.pdf-shape span:nth-child(1) {
  top: 2px;
}

.pdf-shape span:nth-child(2) {
  top: 15px;
}

.pdf-shape span:nth-child(3) {
  top: 28px;
  left: 0;
  width: 50px;
}

.pdf-shape span:nth-child(4) {
  top: 40px;
  left: 0;
  width: 42px;
}

.pdf-text {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 10px;
  text-align: center;
  color: #b8b8b8;
  font-size: 20px;
  letter-spacing: 1px;
}

/* 文件夹图标 */

.folder-icon {
  width: 170px;
  height: 116px;
  margin: 0 auto;
  position: relative;
  border-radius: 9px 9px 10px 10px;
  background: linear-gradient(
    180deg,
    #67cdf3 0%,
    #4dbce8 45%,
    #35a9dc 100%
  );
  box-shadow:
    inset 0 3px 0 rgba(255, 255, 255, 0.55),
    inset 0 -4px 8px rgba(0, 87, 120, 0.12),
    0 4px 8px rgba(0, 0, 0, 0.22);
}

.folder-icon::before {
  content: "";
  position: absolute;
  top: -13px;
  left: 10px;
  width: 58px;
  height: 24px;
  border-radius: 9px 9px 0 0;
  background: linear-gradient(180deg, #76d5f7, #55c2ed);
}

.folder-icon::after {
  content: "";
  position: absolute;
  top: 20px;
  left: 8px;
  right: 8px;
  height: 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.88);
}

.folder-preview {
  position: absolute;
  width: 62px;
  height: 48px;
  left: 50%;
  top: 42px;
  transform: translateX(-50%);
  border: 5px solid rgba(0, 92, 128, 0.24);
  border-radius: 8px;
}

.folder-preview::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: rgba(0, 92, 128, 0.24);
}

.folder-preview::after {
  content: "";
  position: absolute;
  left: 12px;
  bottom: 8px;
  width: 34px;
  height: 20px;
  background: rgba(0, 92, 128, 0.24);
  clip-path: polygon(0 100%, 35% 45%, 55% 70%, 75% 35%, 100% 100%);
}

.folder-warning .folder-preview {
  display: none;
}

.folder-warning .folder-sign {
  position: absolute;
  left: 50%;
  top: 36px;
  width: 58px;
  height: 58px;
  transform: translateX(-50%) rotate(45deg);
  border: 5px solid rgba(0, 92, 128, 0.22);
  border-radius: 8px;
}

.folder-warning .folder-sign::after {
  content: "♙";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  font-size: 31px;
  color: rgba(0, 92, 128, 0.28);
}

.tag-dot {
  display: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

.orange {
  background: #ff9b4a;
}

.green-tag {
  background: #60d37a;
}

.purple {
  background: #d45eea;
}

/* 自适应 */

@media (max-width: 900px) {
  body {
    padding: 8px;
  }

  .app {
    gap: 8px;
  }

  .sidebar {
    width: 230px;
    border-radius: 16px;
    padding: 14px 10px;
  }

  .main {
    padding: 32px 24px;
    border-radius: 16px;
  }

  .menu {
    font-size: 12px;
  }

  .row {
    grid-template-columns: repeat(auto-fill, 130px);
    column-gap: 30px;
  }

  .folder,
  .file {
    width: 130px;
  }

  .folder-icon {
    width: 130px;
    height: 90px;
  }

  .folder-icon::before {
    width: 48px;
    height: 20px;
  }

  .folder-icon::after {
    top: 15px;
  }

  .folder-preview {
    transform: translateX(-50%) scale(0.78);
    transform-origin: center;
    top: 28px;
  }

  .folder-warning .folder-sign {
    top: 27px;
    transform: translateX(-50%) rotate(45deg) scale(0.78);
  }
}

@media (max-width: 900px) {
  .sidebar {
    width: 300px;
    border-radius: 16px;
    padding: 14px 12px;
  }
}

.sidebar {
  width: clamp(380px, 24vw, 460px);
  flex-shrink: 0;
  background: #f7f7f7;
  border: 1px solid #cfcfcf;
  border-radius: 20px;
  padding: 18px 18px;
  overflow: auto;
}
  .main {
    min-height: 500px;
  }
  /* JS 渲染出来的 Overview 文件夹网格 */
.folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, 170px);
  column-gap: 70px;
  row-gap: 54px;
}

/* JS 渲染出来的图片作品页 */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 180px));
  column-gap: 70px;
  row-gap: 64px;
}

.gallery-card {
  text-align: center;
  color: #777;
  font-size: 14px;
}

.gallery-image {
  width: 160px;
  height: 220px;
  margin: 0 auto 14px;
  border-radius: 6px;
  overflow: hidden;
  background: #f0f0f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.gallery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 图片加载失败时，至少不会把页面撑乱 */
.gallery-image img[src=""] {
  display: none;
}

.gallery-card h3 {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 400;
  color: #777;
}

.gallery-card p {
  margin: 0;
  font-size: 12px;
  color: #aaa;
}

/* 信息页 */
.info-page {
  max-width: 720px;
  padding: 20px 10px;
}

.info-page h1 {
  margin: 0 0 18px;
  font-size: 28px;
  font-weight: 500;
  color: #333;
}

.info-page p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: #666;
}

/* Links 页面 */
.links-page {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 220px));
  gap: 20px;
}

.link-card {
  display: flex;
  align-items: center;
  height: 56px;
  padding: 0 18px;
  border: 1px solid #ddd;
  border-radius: 12px;
  color: #333;
  text-decoration: none;
  background: #fafafa;
}

.link-card:hover {
  border-color: #1677ff;
  color: #1677ff;
  background: #f4f8ff;
}

/* 右侧文件夹可点击 */
.folder {
  cursor: pointer;
}

.folder:hover p {
  color: #1677ff;
}

/* 摄影页瀑布流 */

.masonry-page {
  width: 100%;
}

.masonry-grid {
  column-count: 4;
  column-gap: 28px;
}

.masonry-card {
  break-inside: avoid;
  margin-bottom: 34px;
  color: #777;
  font-size: 14px;
}

.masonry-card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  background: #f0f0f0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.masonry-card p {
  margin: 10px 0 0;
  text-align: center;
  color: #888;
  font-size: 13px;
}

/* 鼠标经过 */
.masonry-card:hover img {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.14);
}

.masonry-card img {
  transition: 0.2s ease;
}

/* 自适应 */
@media (max-width: 1200px) {
  .masonry-grid {
    column-count: 3;
  }
}

@media (max-width: 800px) {
  .masonry-grid {
    column-count: 2;
  }
}

@media (max-width: 520px) {
  .masonry-grid {
    column-count: 1;
  }
}