:root {
  --bg: #fafafa;
  --surface: #ffffff;
  --text: #1f1f1f;
  --muted: #777777;
  --border: #ececec;
  --soft: #f5f5f5;
  --radius: 16px;
}

:root[data-theme="dark"] {
  --bg: #171717;
  --surface: #202020;
  --text: #f2f2f2;
  --muted: #aaa;
  --border: #363636;
  --soft: #2b2b2b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
button { cursor: pointer; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
}
.header-content, .main-content { width: min(1200px, calc(100% - 40px)); margin: 0 auto; }
.header-content { height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 38px; }
.header-actions { position: relative; display: flex; align-items: center; gap: 8px; }
.logo { flex: 0 0 auto; color: var(--text); font-size: 18px; font-weight: 680; letter-spacing: -.04em; text-decoration: none; }
.logo span { color: #aaa; padding-left: 2px; }
.header-search { height: 36px; display: flex; align-items: center; gap: 8px; width: 178px; color: #999; }
.header-search svg, .hero-search svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.7; }
.header-search input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 14px; }
.header-search input::placeholder { color: #999; }
.theme-toggle { display: grid; place-items: center; width: 34px; height: 34px; flex: none; border: 1px solid var(--border); border-radius: 50%; background: var(--surface); color: var(--muted); font-size: 17px; transition: 200ms ease-out; }
.theme-toggle:hover { color: var(--text); border-color: var(--muted); }
.header-icon-button { display: grid; place-items: center; width: 34px; height: 34px; flex: none; border: 1px solid var(--border); border-radius: 50%; background: var(--surface); color: var(--muted); transition: 200ms ease-out; }
.header-icon-button:hover, .header-icon-button[aria-expanded="true"] { color: var(--text); border-color: var(--muted); }
.builder-toggle { font-size: 21px; font-weight: 300; line-height: 1; }
.header-icon-button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.settings-panel { position: absolute; z-index: 30; top: 44px; right: 42px; width: min(300px, calc(100vw - 32px)); padding: 15px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: 0 16px 45px rgba(0,0,0,.12); }
.settings-panel[hidden] { display: none; }
.settings-panel p { margin: 0 0 12px; color: var(--text); font-size: 14px; font-weight: 650; }
.settings-panel > span { display: block; margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.retention-options { display: flex; flex-wrap: wrap; gap: 6px; }
.retention-options button { border: 1px solid var(--border); border-radius: 99px; background: transparent; padding: 6px 9px; color: var(--muted); font-size: 12px; }
.retention-options button:hover, .retention-options button.active { border-color: var(--text); color: var(--text); }

.intro { padding: 77px 0 50px; max-width: 725px; }
.eyebrow { margin: 0 0 16px; color: #999; font-size: 11px; font-weight: 650; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(36px, 5vw, 55px); font-weight: 700; letter-spacing: -.07em; line-height: 1.12; }
.intro > p:last-child { margin: 16px 0 0; color: var(--muted); font-size: 15px; }
.hero-search { height: 66px; display: flex; align-items: center; gap: 14px; margin-top: 33px; padding: 0 17px 0 21px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); color: #999; transition: border-color 200ms ease-out, box-shadow 200ms ease-out; }
.hero-search:focus-within { border-color: #b7b7b7; box-shadow: 0 8px 24px rgba(0,0,0,.045); }
.hero-search svg { width: 21px; height: 21px; }
.hero-search input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 16px; }
.hero-search input::placeholder { color: #aaa; }
.clear-search { visibility: hidden; flex: none; border: 0; background: var(--soft); border-radius: 7px; padding: 7px 10px; color: var(--muted); font-size: 12px; }
.clear-search.visible { visibility: visible; }
.suggestions { display: flex; align-items: center; gap: 9px; margin-top: 14px; overflow-x: auto; white-space: nowrap; scrollbar-width: none; }
.suggestions::-webkit-scrollbar { display: none; }
.suggestions span { color: #aaa; font-size: 12px; }
.suggestions button { border: 0; border-bottom: 1px solid transparent; background: transparent; padding: 3px 0; color: var(--muted); font-size: 13px; transition: color 200ms ease-out, border-color 200ms ease-out; }
.suggestions button:hover { border-color: var(--text); color: var(--text); }
.suggestions .random-button { margin-left: 4px; border: 1px solid var(--border); border-radius: 99px; padding: 5px 10px; color: var(--text); }
.suggestions .random-button:hover { border-color: var(--text); }

.category-bar { position: sticky; top: 68px; z-index: 5; display: flex; align-items: center; gap: 18px; margin: 0 calc((100vw - min(1200px, calc(100vw - 40px))) / -2); padding: 0 max(20px, calc((100vw - 1200px) / 2)); background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(10px); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.categories { min-width: 0; flex: 1; }
.reorder-categories { flex: none; border: 0; border-bottom: 1px solid #b9b9b9; padding: 3px 0; background: transparent; color: #777; font-size: 12px; }
.reorder-categories[aria-pressed="true"] { color: var(--text); border-color: var(--text); }
.categories { display: flex; gap: 27px; overflow-x: auto; scrollbar-width: none; white-space: nowrap; }
.categories::-webkit-scrollbar { display: none; }
.category-button { position: relative; display: inline-flex; align-items: center; gap: 5px; flex: none; border: 0; background: transparent; color: var(--muted); padding: 16px 0 14px; font-size: 14px; transition: color 200ms ease-out; }
.category-button:hover, .category-button.active { color: var(--text); }
.category-add-collection { flex: none; align-self: center; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); padding: 5px 9px; color: var(--muted); font-size: 12px; transition: 200ms ease-out; }
.category-add-collection:hover { border-color: var(--text); color: var(--text); }
.category-button.active::after { content: ""; position: absolute; height: 1.5px; background: var(--text); inset: auto 0 0; }
.category-button { touch-action: pan-x; }
.category-button.dragging { opacity: .35; }
.category-bar.reorder-mode .category-button { cursor: grab; animation: category-wiggle .16s ease-in-out infinite alternate; }
.category-bar.reorder-mode .category-button:active { cursor: grabbing; }
.category-drag-handle { display: none; color: #aaa; font-size: 15px; line-height: 1; touch-action: none; user-select: none; }
.category-bar.reorder-mode .category-drag-handle { display: inline; }
.category-button.drop-target::before { content: ""; position: absolute; top: 12px; bottom: 11px; left: -14px; width: 2px; border-radius: 2px; background: var(--text); }
.category-button.drop-target-after::after { content: ""; position: absolute; top: 12px; bottom: 11px; right: -14px; width: 2px; border-radius: 2px; background: var(--text); }
.category-bar.reorder-mode { cursor: grabbing; user-select: none; }
@keyframes category-wiggle { from { transform: rotate(-.35deg); } to { transform: rotate(.35deg); } }
.reset-category-order { display: block; margin: 10px 0 0 auto; border: 0; border-bottom: 1px solid #bbb; padding: 3px 0; background: transparent; color: #888; font-size: 12px; }
.filter-panel { margin: 0 0 4px; padding: 22px 0 2px; border-bottom: 1px solid var(--border); }
.filter-group { display: flex; align-items: baseline; gap: 18px; padding: 0 0 16px; }
.filter-group > span { width: 54px; flex: none; color: #999; font-size: 12px; }
.filter-options { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-option { border: 1px solid var(--border); border-radius: 99px; background: var(--surface); padding: 6px 10px; color: var(--muted); font-size: 13px; transition: 200ms ease-out; }
.filter-option:hover, .filter-option.active { border-color: var(--text); color: var(--text); }

.personal-tools { margin-top: 17px; border: 1px solid var(--border); border-radius: 12px; background: color-mix(in srgb, var(--surface) 88%, transparent); }
.tool-tabs { display: flex; align-items: center; gap: 18px; min-height: 43px; padding: 0 14px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tool-tab { flex: none; border: 0; border-bottom: 1px solid transparent; background: transparent; padding: 12px 0 10px; color: var(--muted); font-size: 12px; }
.tool-tab.active { border-color: var(--text); color: var(--text); }
.tool-tab span { color: #999; }
.personal-panel { min-height: 47px; display: flex; align-items: center; gap: 8px; padding: 8px 14px; overflow-x: auto; scrollbar-width: none; }
.personal-panel::-webkit-scrollbar { display: none; }
.personal-panel p { margin: 0; color: #999; font-size: 12px; }
.personal-panel .recent-hint { max-width: 0; overflow: hidden; opacity: 0; white-space: nowrap; transition: max-width 180ms ease-out, opacity 180ms ease-out; }
.personal-panel:hover .recent-hint { max-width: 310px; opacity: 1; transition-delay: 4s; }
.personal-panel button, .collection-chip { flex: none; border: 1px solid var(--border); border-radius: 99px; background: var(--surface); padding: 6px 10px; color: var(--muted); font-size: 12px; }
.personal-panel button:hover, .collection-chip:hover { border-color: var(--text); color: var(--text); }
.personal-panel .primary-tool { border-color: var(--text); color: var(--text); }
.personal-panel .danger-tool { color: #c87079; }
.collection-group { display: inline-flex; align-items: center; gap: 3px; padding: 2px; border: 1px solid var(--border); border-radius: 99px; background: color-mix(in srgb, var(--surface) 88%, transparent); }
.collection-group .collection-chip { border: 0; }
.personal-panel .collection-action { min-width: 24px; border: 0; padding: 4px 6px; color: #999; }
.personal-panel .recent-chip { max-width: 170px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.list-section { padding: 31px 0 76px; }
.list-heading { display: flex; justify-content: space-between; align-items: flex-start; min-height: 34px; margin-bottom: 15px; }
.list-heading p { margin: 0 0 5px; font-size: 15px; font-weight: 650; }
.list-heading div > span { color: #999; font-size: 13px; }
.list-heading span { color: #aaa; font-size: 13px; }
.list-meta { display: flex; align-items: center; gap: 10px; }
.storage-status { border: 1px solid var(--border); border-radius: 99px; padding: 4px 7px; color: #aaa; font-size: 10px !important; }
.kaomoji-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 7px; }
.load-more-button { grid-column: 1 / -1; justify-self: center; margin: 14px 0 4px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); padding: 9px 14px; color: var(--muted); font-size: 13px; transition: border-color 200ms ease-out, color 200ms ease-out; }
.load-more-button:hover { border-color: var(--text); color: var(--text); }
.kaomoji-row { position: relative; min-width: 0; min-height: 48px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); overflow: hidden; transition: box-shadow 200ms ease-out, transform 200ms ease-out, border-color 200ms ease-out; }
.kaomoji-row:hover { border-color: rgba(120,120,120,.24); background: rgba(255,255,255,.58); box-shadow: 0 7px 18px rgba(0,0,0,.045); backdrop-filter: blur(13px) saturate(1.15); -webkit-backdrop-filter: blur(13px) saturate(1.15); transform: translateY(-1px); }
.kaomoji-copy { width: 100%; min-height: 48px; display: grid; place-items: center; border: 0; background: transparent; color: var(--text); padding: 5px 26px 5px 8px; text-align: center; transition: background 200ms ease-out; }
.kaomoji-copy:hover { background: #fdfdfd; }
.kaomoji-main { max-width: 100%; overflow: hidden; font-size: clamp(15px, 1.35vw, 19px); letter-spacing: .01em; text-overflow: ellipsis; white-space: nowrap; }
.kaomoji-row.multiline { min-height: 76px; }
.kaomoji-row.multiline .kaomoji-copy { min-height: 76px; padding: 5px 28px 5px 8px; }
.kaomoji-row.multiline .kaomoji-main { overflow: visible; font-size: 13px; line-height: 1.08; text-overflow: clip; white-space: pre; }
.kaomoji-tags { display: none; }
.kaomoji-row:hover .kaomoji-copy { color: var(--text); }
.kaomoji-row:hover .kaomoji-text { display: none; }
.kaomoji-row:hover .kaomoji-tags { display: flex; position: absolute; inset: 0; align-items: center; justify-content: center; gap: 5px; padding: 7px 26px 7px 8px; color: #858585; font-size: 11px; white-space: nowrap; }
.kaomoji-row:hover .kaomoji-tags i { font-style: normal; }
.copied-text { display: none; color: #43805f; font-size: 14px; font-weight: 600; letter-spacing: .01em; }
.kaomoji-row.copied .kaomoji-text { display: none; }
.kaomoji-row.copied .copied-text { display: inline; }
.favorite-button { position: absolute; top: 3px; right: 3px; border: 0; background: transparent; color: #bbb; padding: 8px; line-height: 0; opacity: 0; transition: opacity 200ms ease-out, color 200ms ease-out, transform 200ms ease-out; }
.kaomoji-row:hover .favorite-button, .favorite-button.active { opacity: 1; }
.favorite-button svg { width: 18px; height: 18px; fill: transparent; stroke: currentColor; stroke-width: 1.6; }
.favorite-button.active { color: #d06b77; }
.kaomoji-row:hover .favorite-button { color: #9d9d9d; }
.kaomoji-row:hover .favorite-button.active { color: #ff9ba5; }
.favorite-button.active svg { fill: currentColor; }
.favorite-button:active { transform: scale(.88); }
.details-button, .collection-button { position: absolute; z-index: 1; border: 0; border-radius: 7px; background: transparent; color: #aaa; font-size: 13px; line-height: 1; opacity: 0; transition: opacity 200ms ease-out, color 200ms ease-out; }
.details-button { right: 30px; bottom: 5px; padding: 6px 8px; font-family: Georgia, serif; }
.collection-button { left: 4px; top: 4px; padding: 6px 8px; font-size: 16px; }
.kaomoji-row:hover .details-button, .kaomoji-row:hover .collection-button { opacity: 1; }
.details-button:hover, .collection-button:hover { color: var(--text); }
.empty-state { padding: 68px 0; text-align: center; color: var(--muted); }
.empty-state p { margin: 0 0 14px; }
.empty-state button { border: 0; border-bottom: 1px solid #aaa; padding: 3px 0; background: transparent; color: var(--text); font-size: 14px; }
.related-searches { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; max-width: 420px; margin: 0 auto 20px; }
.related-searches::before { content: "也可以試試"; width: 100%; color: #aaa; font-size: 12px; }
.related-searches button { border: 1px solid var(--border); border-radius: 99px; background: var(--surface); padding: 6px 10px; color: var(--muted); font-size: 13px; }
.related-searches button:hover { border-color: var(--text); color: var(--text); }

.details-dialog { width: min(440px, calc(100% - 32px)); border: 1px solid var(--border); border-radius: 16px; padding: 27px; background: var(--surface); color: var(--text); box-shadow: 0 24px 80px rgba(0,0,0,.16); }
.details-dialog::backdrop { background: rgba(0,0,0,.28); backdrop-filter: blur(2px); }
.dialog-close { position: absolute; top: 12px; right: 13px; border: 0; background: transparent; color: var(--muted); font-size: 22px; }
.dialog-kicker { margin: 0 0 10px; color: #999; font-size: 11px; letter-spacing: .08em; }
.detail-kaomoji { margin: 0; overflow-x: auto; color: var(--text); font-size: 28px; white-space: nowrap; }
.detail-kaomoji.multiline { font-size: 18px; line-height: 1.45; white-space: pre; }
.detail-name { margin: 13px 0 10px; color: var(--muted); font-size: 13px; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.detail-tags span { border-radius: 99px; background: var(--soft); padding: 5px 8px; color: var(--muted); font-size: 11px; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 25px; }
.detail-actions button { border: 1px solid var(--border); border-radius: 9px; background: var(--surface); padding: 8px 11px; color: var(--text); font-size: 13px; }
.detail-actions button:first-child { background: var(--text); color: var(--surface); }
.similar-kaomojis { display: flex; flex-wrap: wrap; gap: 7px; }
.similar-kaomojis button { border: 1px solid var(--border); border-radius: 8px; background: var(--surface); padding: 7px 9px; color: var(--text); font-size: 14px; }

.builder-dialog { width: min(510px, calc(100% - 32px)); }
.builder-dialog h2 { margin: 0 0 7px; font-size: 22px; letter-spacing: -.04em; }
.builder-note { margin: 0 0 18px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.builder-parts { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.builder-parts label, .builder-output-label { display: grid; gap: 6px; color: var(--muted); font-size: 11px; }
.builder-parts input, #builder-output { width: 100%; border: 1px solid var(--border); border-radius: 9px; outline: 0; background: var(--surface); color: var(--text); font: 15px ui-monospace, SFMono-Regular, Menlo, monospace; text-align: center; }
.builder-parts input { height: 38px; padding: 0 7px; }
.builder-parts input:focus, #builder-output:focus { border-color: #9b9b9b; }
.builder-piece-options { display: grid; gap: 8px; margin: 15px 0 18px; }
.builder-piece-row { display: flex; align-items: center; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.builder-piece-row > span { width: 28px; flex: none; color: #999; font-size: 11px; }
.builder-piece { flex: none; min-width: 34px; border: 1px solid var(--border); border-radius: 8px; background: var(--soft); padding: 6px 8px; color: var(--text); font-size: 12px; }
.builder-piece:hover { border-color: var(--text); background: var(--surface); }
.builder-output-label { margin-bottom: 6px; }
#builder-output { min-height: 78px; resize: vertical; padding: 13px; line-height: 1.4; text-align: left; white-space: pre; }
.builder-actions { margin: 14px 0 0; }
.builder-actions button:first-child { background: var(--text); color: var(--surface); }
.builder-status { min-height: 18px; margin: 9px 0 0; color: #628a70; font-size: 12px; }

:root[data-theme="dark"] .site-header, :root[data-theme="dark"] .category-bar { background: color-mix(in srgb, var(--bg) 92%, transparent); }
:root[data-theme="dark"] .kaomoji-row:hover, :root[data-theme="dark"] .kaomoji-copy:hover { background: #262626; }

@media (max-width: 640px) {
  .header-content, .main-content { width: min(100% - 32px, 1200px); }
  .header-content { height: 60px; gap: 18px; }
  .logo { font-size: 17px; }
  .header-search { width: 85px; }
  .intro { padding: 55px 0 37px; }
  .hero-search { height: 59px; margin-top: 28px; padding-left: 17px; }
  .hero-search input { font-size: 15px; }
  .category-bar { top: 60px; margin: 0 -16px; padding: 0 16px; gap: 14px; }
  .filter-group { display: block; }
  .filter-group > span { display: block; margin-bottom: 9px; }
  .categories { gap: 24px; }
  .category-button { padding-top: 14px; padding-bottom: 13px; }
  .list-section { padding-top: 25px; }
  .kaomoji-list { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
  .kaomoji-row, .kaomoji-copy { min-height: 48px; }
  .kaomoji-row.multiline, .kaomoji-row.multiline .kaomoji-copy { grid-column: auto; min-height: 76px; }
  .kaomoji-main { font-size: 17px; }
  .kaomoji-tags { display: none; }
  .favorite-button { opacity: 1; }
  .details-button, .collection-button { opacity: 1; }
  .personal-tools { margin-top: 13px; }
  .builder-parts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 641px) and (max-width: 900px) {
  .kaomoji-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}