:root {
  --bg: #ffffff;
  --bg-alt: #f8f9fc;
  --bg-hover: #f0f2f7;
  --bg-active: #e8ebf2;
  --text: #1a1d2e;
  --text-secondary: #6b7194;
  --text-muted: #9499b3;
  --accent: #e06847;
  --accent-hover: #c95535;
  --accent-light: rgba(224, 104, 71, 0.08);
  --border: #e2e5f0;
  --border-light: #eef0f6;
  --shadow-sm: 0 1px 3px rgba(26, 29, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 29, 46, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 29, 46, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --sidebar-w: 260px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.layout {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  border-right: 1px solid var(--border-light);
  background: var(--bg-alt);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 50;
  overflow-y: auto;
  transition: transform 200ms ease;
}
.sidebar.collapsed {
  transform: translateX(calc(-1 * var(--sidebar-w)));
}
.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 20px 16px;
  font-weight: 700;
  font-size: 1.05rem;
  white-space: nowrap;
  border-bottom: 1px solid var(--border-light);
}
.logo-icon { font-size: 1.3rem; color: var(--accent); }
.logo-text { letter-spacing: -0.02em; }
.logo-pro { color: var(--accent); }

.sidebar-search {
  position: relative;
  padding: 16px 16px 12px;
}
.sidebar-search-icon {
  position: absolute;
  left: 28px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}
.sidebar-search input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
  outline: none;
  transition: border-color 150ms, box-shadow 150ms;
}
.sidebar-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}
.sidebar-search input::placeholder { color: var(--text-muted); }

.sidebar-section {
  padding: 8px 0;
}
.sidebar-heading {
  padding: 8px 20px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.sidebar-list {
  list-style: none;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  cursor: pointer;
  transition: background 100ms;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
  border-left: 3px solid transparent;
}
.sidebar-item:hover {
  background: var(--bg-hover);
  color: var(--text);
}
.sidebar-item.active {
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
  border-left-color: var(--accent);
}
.sidebar-item-icon {
  width: 20px;
  text-align: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}
.sidebar-item-count {
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

/* Main */
.main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.main-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.main-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.sidebar-toggle {
  display: none;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg);
  color: var(--text-secondary);
  cursor: pointer;
  place-items: center;
  flex-shrink: 0;
}
.sidebar-toggle:hover { color: var(--text); border-color: var(--text-muted); }
.main-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.main-count {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}
.main-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.page-info {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.view-toggle { display: flex; gap: 4px; }
.view-btn {
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg);
  color: var(--text-muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 120ms;
}
.view-btn:hover { color: var(--text); border-color: var(--text-muted); }
.view-btn.active { color: var(--accent); border-color: var(--accent); background: var(--accent-light); }

/* Grid */
.grid {
  padding: 16px 32px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 2px;
  flex: 1;
}
.grid.list-view {
  grid-template-columns: 1fr;
  gap: 0;
}
.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Icon card - grid view */
.icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 8px 16px;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  transition: all 120ms;
  text-align: center;
  font-family: var(--font);
}
.icon-card:hover {
  background: var(--bg-hover);
}
.icon-card:active { background: var(--bg-active); transform: scale(0.97); }
.icon-preview {
  font-size: 1.8rem;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--text);
}
.icon-card .icon-name {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-secondary);
  word-break: break-word;
  line-height: 1.3;
  max-width: 100%;
}
.icon-card .icon-unicode { display: none; }

/* List view */
.grid.list-view .icon-card {
  flex-direction: row;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-light);
  gap: 14px;
  border-radius: 0;
}
.grid.list-view .icon-preview {
  font-size: 1.3rem;
  height: 32px;
  width: 32px;
  flex-shrink: 0;
}
.grid.list-view .icon-name {
  font-size: 0.85rem;
  flex: 1;
  text-align: left;
}
.grid.list-view .icon-unicode {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--mono);
}

/* Pagination */
.pagination {
  padding: 24px 32px 64px;
  display: flex;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
}
.page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  display: grid;
  place-items: center;
  transition: all 120ms;
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--text);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: toastIn 200ms ease;
}
@keyframes toastIn {
  from { transform: translateX(-50%) translateY(12px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 900;
  display: grid;
  place-items: center;
}
.modal[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 29, 46, 0.4);
  backdrop-filter: blur(6px);
}
.modal-content {
  position: relative;
  background: var(--bg);
  border-radius: 20px;
  padding: 40px;
  max-width: 520px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 32px 80px rgba(26, 29, 46, 0.2);
  animation: modalIn 200ms ease;
}
@keyframes modalIn {
  from { transform: scale(0.96) translateY(8px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all 120ms;
  display: grid;
  place-items: center;
}
.modal-close:hover { background: var(--bg-hover); color: var(--text); }
.modal-preview {
  font-size: 5rem;
  height: 100px;
  display: grid;
  place-items: center;
  margin-bottom: 8px;
  color: var(--text);
}
.modal-title {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 4px;
}
.modal-unicode {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-family: var(--mono);
  margin-bottom: 20px;
}
.modal-section { margin-bottom: 16px; }
.modal-section h3 {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 6px;
}
.animation-section {
  padding: 12px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-alt);
}
.animation-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
}
.animation-controls label {
  display: grid;
  gap: 5px;
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
}
.animation-controls select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 7px 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.animation-controls .animation-reverse {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
}
.animation-reverse input { accent-color: var(--accent); }
.animation-reverse:has(input:disabled) { cursor: not-allowed; color: var(--text-muted); }
.animation-note {
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 0.72rem;
  line-height: 1.4;
}
.code-block {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.code-block code {
  flex: 1;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  user-select: all;
}
.code-copy {
  flex-shrink: 0;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg);
  color: var(--text-secondary);
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 120ms;
}
.code-copy:hover { border-color: var(--accent); color: var(--accent); }

/* CDN button */
.cdn-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--bg);
  color: var(--accent);
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 120ms;
  white-space: nowrap;
}
.cdn-btn:hover { background: var(--accent); color: #fff; }

/* CDN Modal */
.modal-wide { max-width: 680px; }
.modal-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 28px;
}
.cdn-section {
  margin-bottom: 24px;
}
.cdn-section h3 {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 8px;
}
.cdn-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.animation-desc { margin-top: 12px; }
.cdn-desc code.inline {
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.78rem;
  color: var(--accent);
}
.cdn-table {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.cdn-row {
  display: grid;
  grid-template-columns: 100px 140px 1fr;
  gap: 8px;
  padding: 8px 12px;
  font-size: 0.78rem;
  border-bottom: 1px solid var(--border-light);
  align-items: center;
}
.cdn-row:last-child { border-bottom: none; }
.cdn-row-header {
  background: var(--bg-alt);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.cdn-row code {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
}
.cdn-row span {
  font-weight: 500;
  color: var(--text);
}
.cdn-sizes {
  display: flex;
  gap: 24px;
  align-items: flex-end;
  padding: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
}
.cdn-size-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text);
}
.cdn-size-item span {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Responsive */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(calc(-1 * var(--sidebar-w)));
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }
  .sidebar-toggle {
    display: grid;
  }
  .main {
    margin-left: 0;
  }
}
@media (max-width: 768px) {
  .main-header { padding: 12px 16px; }
  .grid { padding: 12px 16px; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .pagination { padding: 16px 16px 48px; }
  .modal-content { padding: 28px 20px; }
}