html {
  scrollbar-gutter: stable;
  overflow-y: scroll;
}

:root {
  --primary: #3b82f6;
  --ph: #2563eb;
  --bgc: #ffffff;
  --tx: #1e293b;
  --cb: rgba(255, 255, 255, 0.65);
  --cd: rgba(0, 0, 0, 0.08);
  --tb: rgba(59, 130, 246, 0.15);
  --sp: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* {
  -webkit-tap-highlight-color: transparent;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bgc);
  color: var(--tx);
  margin: 0;
  padding: 15px 10px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

.bg-layer {
  content: "";
  position: fixed;
  top: -5%;
  left: -5%;
  width: 110vw;
  height: calc(var(--app-height, 100vh) * 1.1);
  pointer-events: none;
  z-index: -3;
  background-image: var(--user-bg-url);
  background-size: cover;
  background-position: center;
  filter: blur(20px) brightness(1.05) saturate(110%);
  opacity: var(--bg-op, 0);
  transition: opacity 0.4s ease;
}

button, input, .card, .folder-card, .file-card, .modal-content, .nav-tab, .upload-box {
  transition: all 0.3s var(--sp);
  will-change: transform;
}

.container {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

html.modal-open,
body.modal-open {
  overflow: hidden !important;
  overscroll-behavior: none !important;
}

body.modal-open .container,
body.modal-open .admin-fab-container {
  pointer-events: none;
}

.card, .folder-card, .file-card, .modal-content {
  background: var(--cb);
  padding: 16px;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04), inset 0 1px 1px rgba(255, 255, 255, 0.2);
  border: 1px solid var(--cd);
  margin-bottom: 14px;
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--cd);
  padding-bottom: 10px;
  flex-wrap: wrap;
  gap: 10px;
}

.header-title {
  margin: 0;
  font-size: 19px;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  white-space: nowrap;
}

.nav-tabs {
  display: flex;
  position: relative;
  background: rgba(0, 0, 0, 0.04);
  padding: 4px;
  border-radius: 12px;
  overflow-x: auto;
  white-space: nowrap;
  z-index: 1;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-indicator {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 0;
  background: var(--primary);
  border-radius: 10px;
  transition: transform 0.4s var(--sp), width 0.4s var(--sp);
  z-index: -1;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.35);
}

.nav-tab {
  padding: 8px 16px;
  border-radius: 10px;
  color: var(--tx);
  font-weight: 700;
  cursor: pointer;
  background: transparent;
  border: none;
  font-size: 13px;
}

.nav-tab.active {
  color: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: var(--primary);
  color: #fff !important;
  padding: 10px 16px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.btn:hover {
  background: var(--ph);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}

.btn:active {
  transform: scale(0.96);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-outline {
  background: transparent;
  color: var(--tx) !important;
  border: 1px solid var(--cd);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.btn-outline:hover {
  background: rgba(0, 0, 0, 0.05);
}

.btn-danger {
  background: #ef4444;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-warn {
  background: #f59e0b;
}

.btn-warn:hover {
  background: #d97706;
}

.btn-success {
  background: #10b981;
}

.btn-success:hover {
  background: #059669;
}

input, select {
  padding: 12px;
  border: 1px solid var(--cd);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.03);
  color: var(--tx);
  font-size: 14px;
  width: 100%;
  outline: 0;
  margin-bottom: 5px;
}

input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}

.folder-card, .file-card {
  cursor: pointer;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.folder-card:hover, .file-card:hover {
  transform: translateY(-4px) scale(1.03);
  border-color: var(--primary);
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.15);
}

.folder-preview, .file-preview {
  height: 75px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  background: transparent;
  border: none;
  box-shadow: none;
  overflow: visible;
  position: relative;
  transition: all 0.3s var(--sp);
}

.file-preview-img {
  height: 90px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--cd);
  background: rgba(0, 0, 0, 0.03);
}

.file-preview-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

.folder-preview svg, .file-preview svg {
  width: 58px;
  height: 58px;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.3s ease;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.06));
}

.folder-card:hover .folder-preview svg,
.file-card:hover .file-preview svg {
  transform: translateY(-4px) scale(1.15);
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.14));
}

.file-name {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-meta {
  color: gray;
  font-size: 11px;
}

.progress-container {
  width: 100%;
  background: rgba(0, 0, 0, 0.05);
  border-radius: 10px;
  height: 12px;
  margin-top: 8px;
  overflow: hidden;
  border: 1px inset var(--cd);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #60a5fa);
  border-radius: 10px;
  transition: width 0.2s;
}

.upload-box {
  border: 2px dashed var(--cd);
  padding: 30px 10px;
  text-align: center;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.02);
  cursor: pointer;
  position: relative;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.upload-box:hover {
  border-color: var(--primary);
  background: var(--tb);
  transform: scale(1.01);
}

.upload-box input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(16px) brightness(1.15) saturate(120%);
  -webkit-backdrop-filter: blur(16px) brightness(1.15) saturate(120%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  overscroll-behavior: contain;
  isolation: isolate;
  transform: translateZ(0);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 400px;
  max-height: 85vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
  margin: 0;
  scrollbar-gutter: stable;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.flex-row {
  display: flex;
  gap: 10px;
  align-items: center;
  width: 100%;
}

.flex-1 {
  flex: 1;
  text-align: center;
  justify-content: center;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

@keyframes dash {
  0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
  50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
  100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-thumb {
  background: var(--cd);
  border-radius: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

.om-emoji {
  display: inline-block;
  width: 1.25em;
  height: 1.25em;
  vertical-align: -0.22em;
  margin: 0 0.15em;
  object-fit: contain;
}

.om-emoji-lg {
  width: 1.55em;
  height: 1.55em;
  vertical-align: -0.32em;
}

.btn-fast-dl {
  background: transparent;
  color: var(--tx) !important;
  border: 1px solid var(--cd);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

.btn-fast-dl:hover {
  background: rgba(0, 0, 0, 0.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.dl-stat-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 0, 0, 0.05);
  color: var(--tx);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: bold;
}

.app-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.03);
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid var(--cd);
  font-size: 13px;
  font-weight: 500;
}

/* Floating Action Button (FAB) */
.admin-fab-container {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

@media (max-width: 768px) {
  .admin-fab-container {
    right: 18px;
    bottom: 18px;
    gap: 12px;
  }
  .fab-btn-tip {
    display: none !important;
  }
}

.fab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  outline: none;
  transition: transform 0.3s var(--sp), box-shadow 0.3s var(--sp), background 0.3s var(--sp), opacity 0.3s var(--sp);
  user-select: none;
  -webkit-user-select: none;
}

.fab-btn-main {
  width: 58px;
  height: 58px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
  position: relative;
  z-index: 2;
}

.fab-btn-main:hover {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  transform: scale(1.08);
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.55);
}

.fab-btn-main:active {
  transform: scale(0.94);
}

.fab-icon-x {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: block;
}

/* When expanded, the 'x' rotates 45deg to become '+' */
.admin-fab-container.expanded .fab-icon-x {
  transform: rotate(45deg);
}

.fab-sub-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  pointer-events: none;
}

.fab-btn-sub {
  width: 50px;
  height: 50px;
  background: var(--cb);
  border: 1px solid var(--cd);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  opacity: 0;
  transform: translateY(20px) scale(0.7);
  pointer-events: none;
  position: relative;
  color: var(--tx);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.fab-btn-sub svg,
.fab-btn-sub img {
  pointer-events: none;
}

.fab-btn-sub:hover {
  transform: scale(1.1) translateY(0);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
}

.fab-btn-sub:active {
  transform: scale(0.92);
}

.fab-btn-tip {
  position: absolute;
  right: 60px;
  background: rgba(30, 41, 59, 0.88);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateX(8px);
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.fab-btn-sub:hover .fab-btn-tip {
  opacity: 1;
  transform: translateX(0);
}

.admin-fab-container.expanded .fab-sub-buttons {
  pointer-events: auto;
}

.admin-fab-container.expanded .fab-btn-sub {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.admin-fab-container.expanded #fab-sub-settings {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
}

.admin-fab-container.expanded #fab-sub-cli {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) 0.04s, opacity 0.25s ease 0.04s;
}

.admin-fab-container.expanded #fab-sub-github {
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) 0.08s, opacity 0.25s ease 0.08s;
}

.gh-rule-card {
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid var(--cd);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  contain: layout style;
}

.gh-rule-card:hover {
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.7);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.gh-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
}

.gh-badge-inc {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.gh-badge-exc {
  background: rgba(239, 68, 68, 0.1);
  color: #dc2626;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.gh-badge-tag {
  background: rgba(59, 130, 246, 0.12);
  color: var(--primary);
  border: 1px solid rgba(59, 130, 246, 0.25);
}

.gh-badge-time {
  background: rgba(0, 0, 0, 0.04);
  color: gray;
  font-size: 11px;
}

/* 红色圆角方块白色X关闭按钮 */
.btn-modal-close-red {
  width: 32px !important;
  height: 32px !important;
  min-width: 32px !important;
  min-height: 32px !important;
  border-radius: 8px !important;
  background: #ef4444 !important;
  color: #ffffff !important;
  border: none !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  padding: 0 !important;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4) !important;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  outline: none;
  flex-shrink: 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.btn-modal-close-red:hover {
  background: #dc2626 !important;
  transform: scale(1.08);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.5) !important;
}
.btn-modal-close-red:active {
  transform: scale(0.92);
}
.btn-modal-close-red svg {
  display: block;
  pointer-events: none;
}

/* GitHub 弹窗标签导航与排版优化 */
.gh-sub-nav {
  display: inline-flex;
  background: rgba(0, 0, 0, 0.05);
  padding: 3px;
  border-radius: 10px;
  gap: 4px;
}
.gh-nav-btn {
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: gray;
  cursor: pointer;
  transition: all 0.2s ease;
}
.gh-nav-btn:hover {
  color: var(--tx);
}
.gh-nav-btn.active {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* 顶部 GitHub 仓库跳转图标按钮 */
.btn-github-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--cd);
  color: var(--tx);
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  flex-shrink: 0;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.btn-github-link:hover {
  background: var(--cb);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.btn-github-link:active {
  transform: scale(0.95);
}

/* 移动端排版优化，避免小屏幕顶部栏元素换行错位 */
@media (max-width: 640px) {
  .header {
    gap: 8px;
  }
  .header-title {
    font-size: 17px;
    order: 1;
  }
  .header-right {
    order: 2;
    gap: 6px;
  }
  .header .nav-tabs {
    order: 3;
    width: fit-content;
    margin: 4px auto 0 auto;
    padding: 3px;
    border-radius: 10px;
  }
  .header .nav-tab {
    padding: 5px 12px;
    font-size: 12px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }
  .header .nav-tab .om-emoji {
    width: 14px;
    height: 14px;
  }
  .header .nav-indicator {
    top: 3px;
    bottom: 3px;
    border-radius: 8px;
  }
  .header-right #auth-btn .btn {
    padding: 5px 10px;
    font-size: 12px;
  }
  .btn-github-link {
    width: 31px;
    height: 31px;
  }
}