/* ============================================================
   OSR · Open Source Recommend — Editorial Data Tool 风格
   暖纸底 #fafaf9 · stone 文字 · 赤陶 #c2410c 强调 · Swiss 网格
   全站几乎无阴影，分隔全靠 hairline
   ============================================================ */

:root {
  --bg: #fafaf9;             /* stone-50  */
  --surface: #ffffff;
  --hover: #f5f5f4;          /* stone-100 */

  --text-1: #1c1917;         /* stone-900 */
  --text-2: #57534e;         /* stone-600 */
  --text-3: #a8a29e;         /* stone-400 */
  --text-4: #d6d3d1;         /* stone-300 */

  --border: #e7e5e4;         /* stone-200 hairline */
  --border-light: #f0efee;   /* 行间更浅 hairline */
  --border-strong: #d6d3d1;

  --accent: #c2410c;         /* 赤陶 orange-700 */
  --accent-deep: #9a3412;    /* orange-800 */
  --accent-soft: #fdf4ee;    /* 赤陶极浅底 */

  --chip-bg: #f5f5f4;
  --chip-text: #57534e;

  --success: #16a34a;

  --shadow-pop: 0 10px 30px -8px rgb(28 25 23 / 0.12),
                0 2px 8px -2px rgb(28 25 23 / 0.05);

  --radius-sm: 6px;
  --radius-md: 10px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

  --pad-x: 40px;             /* 通栏左右留白 32-48 区间 */

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "SF Pro Text", -apple-system, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

/* ---------------- base ---------------- */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

a {
  color: var(--text-1);
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main {
  flex: 1;
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--pad-x) 72px;
}

.num,
.result-count,
.board-date,
.stars-value,
.new-stars-value,
.push-time {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ---------------- topbar（通栏） ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgb(250 250 249 / 0.9);
  backdrop-filter: saturate(1.3) blur(10px);
  -webkit-backdrop-filter: saturate(1.3) blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar-inner {
  display: flex;
  align-items: stretch;
  gap: 32px;
  height: 62px;
  padding: 0 var(--pad-x);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex: 1;
  min-width: 0;
  color: var(--text-1);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* board tabs — 下划线式（非胶囊） */
.board-tabs {
  display: flex;
  align-items: stretch;
  justify-content: center;
  flex: 0 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
  max-width: 100%;
}
.board-tabs::-webkit-scrollbar { display: none; }

.topbar-right {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.board-tab {
  position: relative;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 0 15px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-2);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 150ms var(--ease-standard),
              border-color 150ms var(--ease-standard),
              transform 120ms var(--ease-standard);
}

.board-tab:active { transform: scale(0.97); }

@media (hover: hover) and (pointer: fine) {
  .board-tab:not(.active):hover { color: var(--text-1); }
}

.board-tab.active {
  color: var(--text-1);
  font-weight: 650;
  border-bottom-color: var(--accent);
}

/* search — 桌面常驻，右侧 */
.search {
  position: relative;
  display: flex;
  align-items: center;
  align-self: center;
  margin-left: auto;
  width: 250px;
  flex-shrink: 0;
}

.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-3);
  pointer-events: none;
}

.search input {
  width: 100%;
  height: 35px;
  padding: 0 30px 0 34px;
  font-size: 13px;
  color: var(--text-1);
  background: var(--hover);
  border: 1px solid transparent;
  border-radius: 8px;
  transition: border-color 150ms var(--ease-standard),
              box-shadow 150ms var(--ease-standard),
              background-color 150ms var(--ease-standard);
}

.search input::placeholder { color: var(--text-3); }

.search input:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--border-strong);
  box-shadow: 0 0 0 3px rgb(194 65 12 / 0.09);
}

.search input::-webkit-search-cancel-button { display: none; }

.search-clear {
  position: absolute;
  right: 6px;
  display: none;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  font-size: 16px;
  line-height: 1;
  color: var(--text-3);
  transition: color 140ms var(--ease-standard), background-color 140ms var(--ease-standard);
}

.search.has-query .search-clear { display: inline-flex; }

@media (hover: hover) and (pointer: fine) {
  .search-clear:hover { color: var(--text-1); background: var(--hover); }
}

/* mobile search toggle icon — hidden on desktop */
.search-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  align-self: center;
  width: 36px;
  height: 36px;
  margin-left: auto;
  border-radius: 8px;
  color: var(--text-2);
  transition: color 140ms var(--ease-standard), background-color 140ms var(--ease-standard), transform 120ms var(--ease-standard);
}
.search-toggle:active { transform: scale(0.97); }

/* mobile search bar (below topbar) */
.mobile-search {
  border-top: 1px solid var(--border-light);
  padding: 10px 0;
}
.mobile-search-inner { padding: 0 var(--pad-x); }

.search--mobile {
  width: 100%;
  margin-left: 0;
}

/* ---------------- control bar（标题区） ---------------- */

.control-bar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin: 40px 0 26px;
}

.board-overline {
  display: block;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.board-name {
  margin: 7px 0 0;
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text-1);
}

.control-meta {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin-top: 9px;
  font-size: 12.5px;
  color: var(--text-3);
}

.control-meta-sep { color: var(--text-4); }

.control-filters {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* 日榜近七日切换 — 与榜单 Tab 同款下划线；左旧右新，今天在最右 */
.date-switch {
  display: inline-flex;
  align-items: stretch;
  gap: 0;
  height: 35px;
  padding: 0;
  background: transparent;
  border: none;
}

.date-chip {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  color: var(--text-3);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  transition: color 150ms var(--ease-standard),
              border-color 150ms var(--ease-standard),
              transform 120ms var(--ease-standard);
}

.date-chip + .date-chip::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1px;
  height: 12px;
  transform: translateY(-50%);
  background: var(--border);
}

.date-chip:active { transform: scale(0.97); }

@media (hover: hover) and (pointer: fine) {
  .date-chip:not(.active):hover { color: var(--text-1); }
}

.date-chip.active {
  color: var(--accent-deep);
  font-weight: 650;
  border-bottom-color: var(--accent);
  background: transparent;
}

/* 整行/整卡可点跳转 */
.rank-table tbody tr.rank-row {
  cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
  .rank-table tbody tr.rank-row:hover {
    background: var(--accent-soft);
  }
}

.card.is-clickable { cursor: pointer; }

@media (hover: hover) and (pointer: fine) {
  .card.is-clickable:hover {
    border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  }
}

/* language dropdown */
.lang-filter { position: relative; }

.lang-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 35px;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 150ms var(--ease-standard),
              box-shadow 150ms var(--ease-standard),
              color 150ms var(--ease-standard),
              transform 120ms var(--ease-standard);
}

.lang-trigger:active { transform: scale(0.97); }

@media (hover: hover) and (pointer: fine) {
  .lang-trigger:hover {
    border-color: var(--border-strong);
    color: var(--text-1);
  }
}

.lang-trigger[aria-expanded="true"] {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 3px rgb(194 65 12 / 0.09);
  color: var(--text-1);
}

.lang-caret {
  color: var(--text-3);
  transition: transform 180ms var(--ease-out);
}
.lang-trigger[aria-expanded="true"] .lang-caret { transform: rotate(180deg); }

.lang-trigger-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--dot-color, var(--text-4));
}

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 50;
  min-width: 180px;
  max-height: 320px;
  overflow-y: auto;
  padding: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-pop);
  transform-origin: top right;
  animation: menu-in 160ms var(--ease-out);
}

@keyframes menu-in {
  from { opacity: 0; transform: scale(0.96) translateY(-4px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 7px 10px;
  border-radius: 7px;
  font-size: 13px;
  color: var(--text-2);
  text-align: left;
  transition: background-color 120ms var(--ease-standard), color 120ms var(--ease-standard);
}

@media (hover: hover) and (pointer: fine) {
  .lang-option:hover { background: var(--hover); color: var(--text-1); }
}

.lang-option.active {
  color: var(--accent-deep);
  font-weight: 600;
  background: var(--accent-soft);
}

.lang-option .lang-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

.lang-option .lang-count {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.lang-option.active .lang-count { color: var(--accent-deep); opacity: 0.7; }

/* ---------------- table（开放列表，无外框卡片） ---------------- */

.table-wrap {
  background: transparent;
  overflow-x: auto;
}

.rank-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.rank-table th {
  padding: 0 16px 10px;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.07em;
  color: var(--text-3);
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.rank-table td {
  padding: 14px 16px;
  vertical-align: middle;
  border-bottom: 1px solid var(--border-light);
  transition: background-color 130ms var(--ease-standard);
}

.rank-table tbody tr:last-child td { border-bottom: none; }

@media (hover: hover) and (pointer: fine) {
  .rank-table tbody tr:hover td { background: var(--hover); }
}

/* column widths */
.col-rank   { width: 58px; }
.col-repo   { width: 23%; }
.col-desc   { width: auto; }
.col-lang   { width: 120px; }
.col-stars  { width: 100px; }
.col-new    { width: 178px; }
.col-push   { width: 100px; }

.col-stars, .col-new { text-align: right; }
.rank-table th.col-stars, .rank-table th.col-new { text-align: right; }
.rank-table td.col-new { white-space: nowrap; }

/* rank — 前 3 名墨色实心方块白字，其余浅灰纯数字 */
.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  border-radius: 6px;
  font-size: 12.5px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-3);
}

.rank-badge.gold,
.rank-badge.silver,
.rank-badge.bronze {
  background: var(--text-1);
  color: #fafaf9;
}

/* repo name */
.repo-link {
  font-weight: 650;
  font-size: 13.5px;
  color: var(--text-1);
  letter-spacing: -0.005em;
  word-break: break-all;
  transition: color 140ms var(--ease-standard);
}

@media (hover: hover) and (pointer: fine) {
  .repo-link:hover { color: var(--accent); }
}

.repo-link .repo-owner { color: var(--text-3); font-weight: 500; }

/* description — one line truncated */
.desc-text {
  display: block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  color: var(--text-2);
  cursor: default;
}

.desc-text[data-has-detail] { cursor: help; }

.desc-empty { color: var(--text-4); }

/* language */
.lang-cell {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--text-2);
  white-space: nowrap;
}

.lang-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* stars */
.stars-value {
  font-size: 13.5px;
  font-weight: 650;
  color: var(--text-1);
}

.stars-star {
  color: var(--text-3);
  margin-right: 3px;
  font-weight: 400;
}

/* new stars (period) — 赤陶强调 */
.new-stars-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.new-stars-label {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-3);
  margin-left: 4px;
}

.new-stars-sep { color: var(--text-4); margin: 0 5px; font-weight: 400; }

/* push time */
.push-time {
  font-size: 12.5px;
  color: var(--text-2);
  white-space: nowrap;
}

.push-time.stale { color: var(--text-4); }

/* ---------------- cards (mobile) ---------------- */

.cards { display: none; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 15px;
}

.card + .card { margin-top: 10px; }

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 11px;
}

.card-head {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.card-repo { line-height: 1.4; }

.card-stars {
  flex-shrink: 0;
  font-size: 13px;
}

.card-desc {
  margin: 9px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card.expanded .card-desc {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
}

.card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 11px;
  padding-top: 11px;
  border-top: 1px solid var(--border-light);
  font-size: 12.5px;
  color: var(--text-2);
}

.card-detail {
  display: none;
  margin-top: 11px;
  padding: 10px 12px;
  background: var(--hover);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  color: var(--text-2);
}

.card.expanded .card-detail { display: block; }

.card-detail-line {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.card-detail-line .detail-item .detail-label { color: var(--text-3); margin-right: 4px; }

.card-expand-hint {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-3);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 140ms var(--ease-standard);
}

.card-expand-hint svg { transition: transform 180ms var(--ease-out); }
.card.expanded .card-expand-hint svg { transform: rotate(180deg); }

/* topics chips — stone 低对比 */
.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 10px;
}

.topic-chip {
  padding: 2px 8px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--chip-text);
  background: var(--chip-bg);
  border-radius: 999px;
}

/* ---------------- tooltip ---------------- */

.tooltip {
  position: fixed;
  z-index: 100;
  max-width: 360px;
  padding: 13px 15px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-pop);
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-1);
  pointer-events: none;
  opacity: 0;
  transform: scale(0.97) translateY(3px);
  transition: opacity 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.tooltip.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.tooltip .tooltip-desc { color: var(--text-2); }

.tooltip .tooltip-meta {
  display: flex;
  gap: 14px;
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px solid var(--border-light);
  font-size: 12px;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.tooltip .tooltip-meta b {
  color: var(--text-2);
  font-weight: 600;
}

/* ---------------- states ---------------- */

.skeleton-table {
  padding: 0 16px;
}

.skeleton-row {
  height: 20px;
  margin-top: 22px;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--hover) 25%, #faf9f8 50%, var(--hover) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
}

.skeleton-row.head { height: 14px; margin-top: 8px; opacity: 0.7; }
.skeleton-row:nth-child(3) { width: 88%; }
.skeleton-row:nth-child(5) { width: 94%; }
.skeleton-row:nth-child(7) { width: 82%; }

@keyframes shimmer {
  from { background-position: 200% 0; }
  to   { background-position: -200% 0; }
}

.empty-state, .error-state {
  text-align: center;
  padding: 80px 24px;
}

.empty-state h3, .error-state h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

.empty-state p, .error-state p {
  margin: 0;
  font-size: 13px;
  color: var(--text-3);
}

.error-state h3 { color: var(--accent-deep); }

/* ---------------- footer（通栏） ---------------- */

.footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px var(--pad-x);
  text-align: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
}

.status-pill.error .status-dot { background: var(--text-4); }

.disclaimer {
  margin: 0;
  font-size: 12px;
  color: var(--text-3);
}

/* ---------------- responsive ---------------- */

@media (max-width: 900px) {
  :root { --pad-x: 24px; }
  .col-lang { width: 104px; }
  .col-new  { width: 158px; }
}

@media (max-width: 768px) {
  :root { --pad-x: 16px; }

  .topbar-inner { gap: 10px; height: 54px; }

  /* 移动端：搜索框折叠为图标 */
  .topbar-right > .search { display: none; }
  .search-toggle { display: inline-flex; }

  .board-tab { padding: 0 12px; font-size: 13px; }

  .control-bar { align-items: center; margin: 26px 0 18px; }

  .board-name { font-size: 21px; }

  .table-wrap { display: none; }

  .cards { display: block; }
}

@media (max-width: 480px) {
  .brand-name { display: none; }
}

/* ---------------- reduced motion ---------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}