/* ═══════════════════════════════════════════════
   DAILY INTELLIGENCE — Editorial Brief v4
   Font   : Pretendard
   Layout : Bloomberg-style 3-col list, no cards
   Color  : OKLCH, single-accent-per-section
   ═══════════════════════════════════════════════ */

/* ── Tokens ──────────────────────────────────── */
:root {
  --bg      : oklch(99%  0.003 240);
  --surf    : oklch(99%  0.003 240);
  --rule    : oklch(91%  0.008 240);
  --rule-2  : oklch(83%  0.012 240);

  --tx-1    : oklch(18%  0.022 252);
  --tx-2    : oklch(44%  0.018 248);
  --tx-3    : oklch(60%  0.014 245);
  --tx-mute : oklch(72%  0.010 245);

  /* category accents */
  --c-edu   : oklch(46%  0.13  155);
  --c-edu-s : oklch(95.5% 0.04 155);
  --c-paper : oklch(42%  0.15  246);
  --c-pap-s : oklch(95.5% 0.04 246);
  --c-tech  : oklch(56%  0.17  38);
  --c-tec-s : oklch(95%  0.05  38);

  /* masthead — deep navy */
  --hd-bg   : oklch(15%  0.030 252);
  --hd-tx   : oklch(95%  0.008 245);
  --hd-tx2  : oklch(62%  0.020 245);
  --hd-rule : oklch(22%  0.035 252);

  --font : 'Pretendard Variable', 'Pretendard', 'Apple SD Gothic Neo', 'Malgun Gothic', system-ui, sans-serif;

  /* Sticky layout heights */
  --header-h  : 56px;
  --date-nav-h: 36px;
  --search-h  : 44px;

  /* Type ramp */
  --t-2xs : 0.625rem;   /* 10 — micro caps */
  --t-xs  : 0.6875rem;  /* 11 — meta */
  --t-sm  : 0.75rem;    /* 12 — secondary */
  --t-md  : 0.8125rem;  /* 13 — desc */
  --t-lg  : 0.9375rem;  /* 15 — title */
  --t-xl  : 1.0625rem;  /* 17 — section name */
  --t-2xl : 1.5rem;     /* 24 — masthead */
}

[data-theme="dark"] {
  /* Base — slightly warmer, less pure black */
  --bg      : oklch(16%  0.020 252);
  --surf    : oklch(18%  0.022 252);
  --rule    : oklch(28%  0.025 252);
  --rule-2  : oklch(38%  0.028 252);

  /* Text — significantly brighter for WCAG AA on dark bg */
  --tx-1    : oklch(96%  0.006 245);   /* near-white, primary */
  --tx-2    : oklch(80%  0.012 240);   /* high contrast secondary */
  --tx-3    : oklch(66%  0.016 240);   /* readable tertiary */
  --tx-mute : oklch(52%  0.018 245);   /* numbered ordinals */

  /* Category accents — brighter chroma+L for dark bg visibility */
  --c-edu   : oklch(72%  0.16  155);
  --c-paper : oklch(74%  0.15  235);
  --c-tech  : oklch(78%  0.17   45);
  --c-edu-s : oklch(26%  0.06 155);
  --c-pap-s : oklch(26%  0.06 235);
  --c-tec-s : oklch(26%  0.07  45);

  /* Masthead */
  --hd-bg   : oklch(11%  0.025 252);
  --hd-tx   : oklch(96%  0.006 245);
  --hd-tx2  : oklch(68%  0.014 240);
  --hd-rule : oklch(22%  0.030 252);
}

/* 다크모드 카테고리 배지: 배경/텍스트 컨트라스트 강화 */
[data-theme="dark"] .col[data-cat="edu"]   .entry-kw { background: var(--c-edu-s); color: oklch(82% 0.13 155); }
[data-theme="dark"] .col[data-cat="paper"] .entry-kw { background: var(--c-pap-s); color: oklch(82% 0.13 235); }
[data-theme="dark"] .col[data-cat="tech"]  .entry-kw { background: var(--c-tec-s); color: oklch(85% 0.15  45); }

/* 다크모드 호버 underline은 본 카테고리 색 사용 (이미 var 참조) */

/* 다크모드 칩 active 상태: 어두운 배경에서 활성칩이 더 두드러지게 */
[data-theme="dark"] .cat-chip {
  border-color: var(--rule-2);
  color: var(--tx-2);
}
[data-theme="dark"] .cat-chip:hover {
  background: oklch(24% 0.025 252);
  color: var(--tx-1);
}
[data-theme="dark"] .cat-chip.active {
  background: oklch(94% 0.008 245);
  color: oklch(15% 0.020 252);
  border-color: oklch(94% 0.008 245);
}
[data-theme="dark"] .cat-chip.active::before { background: oklch(15% 0.020 252); }

/* 다크모드 날짜 pill active: 더 밝은 배경 */
[data-theme="dark"] .date-pill.active {
  background: oklch(94% 0.008 245);
  color: oklch(15% 0.020 252);
}
[data-theme="dark"] .date-pill:hover { background: oklch(26% 0.025 252); color: var(--tx-1); }

/* 다크모드 PDF 버튼 */
[data-theme="dark"] .entry-pdf {
  border-color: var(--rule-2);
  color: var(--tx-2);
}
[data-theme="dark"] .entry-pdf:hover {
  border-color: var(--c-paper);
  color: var(--c-paper);
  background: var(--c-pap-s);
}

/* 다크모드 brand-signal pulse 색상 보정 */
[data-theme="dark"] .brand-signal { background: var(--c-tech); }

/* ── Reset ───────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: var(--t-md);
  line-height: 1.55;
  background: var(--bg);
  color: var(--tx-1);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: keep-all;
}
ol, ul { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, h3 { font-weight: 600; }

/* ── Masthead ────────────────────────────────── */
.site-header {
  background: var(--hd-bg);
  border-bottom: 1px solid var(--hd-rule);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand { display: flex; align-items: baseline; gap: 12px; min-width: 0; }

.brand-signal {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--c-tech);
  animation: pulse 2.8s ease-in-out infinite;
  flex-shrink: 0;
  align-self: center;
}
@keyframes pulse {
  0%,100% { box-shadow: 0 0 0 0   oklch(56% 0.17 38 / 0.55); }
  50%     { box-shadow: 0 0 0 6px oklch(56% 0.17 38 / 0.0); }
}

.brand-name {
  font: 800 var(--t-xl)/1 var(--font);
  letter-spacing: -0.012em;
  color: var(--hd-tx);
}
.brand-tag {
  font: 500 var(--t-xs)/1 var(--font);
  letter-spacing: 0.04em;
  color: var(--hd-tx2);
  display: none;
}
@media (min-width: 600px) {
  .brand-tag { display: inline; }
}

.header-right { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

.header-date {
  font: 600 var(--t-sm)/1 var(--font);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--hd-tx);
}
.header-time-sep {
  font: 400 var(--t-xs)/1 var(--font);
  color: var(--hd-tx2);
  margin: 0 5px;
}
.header-time-sep::before { content: '·'; }
.header-live-time {
  font: 500 var(--t-sm)/1 var(--font);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--hd-tx2);
}
@media (max-width: 600px) {
  .header-date { font-size: var(--t-xs); letter-spacing: 0; }
  .header-live-time { font-size: var(--t-xs); }
}

/* ── Date Action Banner ───────────────────────── */
.archive-date-banner {
  background: oklch(95% 0.028 62);
  border-top: 3px solid oklch(60% 0.18 50);
  border-bottom: 1px solid oklch(87% 0.07 62);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
[data-theme="dark"] .archive-date-banner {
  background: oklch(21% 0.04 50);
  border-top-color: oklch(68% 0.17 50);
  border-bottom-color: oklch(30% 0.06 50);
}
.archive-date-info {
  display: flex;
  align-items: baseline;
  gap: 5px;
  flex-shrink: 0;
}
.archive-date-label {
  font: 700 var(--t-xl)/1 var(--font);
  color: oklch(38% 0.16 50);
  letter-spacing: 0.01em;
}
[data-theme="dark"] .archive-date-label { color: oklch(82% 0.14 50); }
.archive-date-sub {
  font: 500 var(--t-md)/1 var(--font);
  color: oklch(54% 0.10 50);
}
[data-theme="dark"] .archive-date-sub { color: oklch(64% 0.10 50); }

.archive-date-actions { display: flex; gap: 8px; flex-shrink: 0; }

.archive-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 11px;
  border: 1px solid oklch(72% 0.12 50);
  border-radius: 6px;
  background: oklch(99% 0.01 62);
  color: oklch(38% 0.16 50);
  font: 500 var(--t-sm)/1 var(--font);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  white-space: nowrap;
}
.archive-action-btn:hover {
  background: oklch(60% 0.18 50);
  border-color: oklch(60% 0.18 50);
  color: #fff;
}
.archive-action-btn:active { transform: scale(0.95); }
[data-theme="dark"] .archive-action-btn {
  background: oklch(26% 0.05 50);
  border-color: oklch(44% 0.10 50);
  color: oklch(82% 0.14 50);
}
[data-theme="dark"] .archive-action-btn:hover {
  background: oklch(68% 0.17 50);
  border-color: oklch(68% 0.17 50);
  color: #fff;
}
@media (max-width: 600px) {
  .archive-date-label { font-size: var(--t-lg); }
  .archive-date-sub   { font-size: var(--t-sm); }
  .archive-action-btn { font-size: var(--t-2xs); padding: 5px 9px; }
}

.theme-toggle {
  border: 1px solid var(--hd-rule);
  color: var(--hd-tx2);
  width: 30px; height: 30px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  transition: border-color 0.15s, color 0.15s;
}
.theme-toggle:hover { border-color: oklch(45% 0.04 250); color: var(--hd-tx); }

/* ── Date Nav ────────────────────────────────── */
.date-nav {
  background: var(--surf);
  border-bottom: 1px solid var(--rule);
  overflow-x: auto;
  scrollbar-width: none;
  position: sticky;
  top: var(--header-h);
  z-index: 90;
}
.date-nav::-webkit-scrollbar { display: none; }

.date-nav-inner {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 8px 24px;
  max-width: 1320px;
  margin: 0 auto;
  min-width: max-content;
}

.date-pill {
  padding: 5px 10px;
  border-radius: 4px;
  font: 500 var(--t-xs)/1 var(--font);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--tx-3);
  white-space: nowrap;
  transition: background 0.1s, color 0.1s;
}
.date-pill:hover  { background: var(--rule); color: var(--tx-2); }
.date-pill.active { background: var(--tx-1); color: var(--surf); font-weight: 600; }

/* ── Category Filter (≤1140px) ───────────────── */
.cat-filter {
  display: none;
  background: var(--surf);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: calc(var(--header-h) + var(--date-nav-h));
  z-index: 85;
}
.cat-filter-inner {
  display: flex;
  gap: 6px;
  padding: 10px 16px;
  max-width: 1320px;
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
}
.cat-filter-inner::-webkit-scrollbar { display: none; }

.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--rule-2);
  color: var(--tx-2);
  font: 600 var(--t-sm)/1 var(--font);
  white-space: nowrap;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.cat-chip:hover { background: var(--rule); color: var(--tx-1); }
.cat-chip::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tx-3);
  flex-shrink: 0;
}
.cat-chip[data-filter="all"]::before  { display: none; }
.cat-chip[data-filter="edu"]::before  { background: var(--c-edu); }
.cat-chip[data-filter="paper"]::before{ background: var(--c-paper); }
.cat-chip[data-filter="tech"]::before { background: var(--c-tech); }

.cat-chip.active {
  background: var(--tx-1);
  color: var(--bg);
  border-color: var(--tx-1);
}
.cat-chip.active::before { background: var(--bg); }

@media (max-width: 1140px) {
  .cat-filter { display: block; }
}

/* ── Grid ────────────────────────────────────── */
/*
   픽셀 단위 동일 폭 보장:
   - minmax(0, 1fr) — content가 컬럼을 늘리지 못함
   - .col 에 min-width: 0 — flex/grid 자식 안전장치
   - 모든 컬럼 padding 0 24px 동일
*/
.news-grid {
  max-width: 1320px;
  margin: 0 auto;
  padding: 28px 0 64px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* ── Column ──────────────────────────────────── */
.col {
  min-width: 0;
  padding: 0 24px;
  border-right: 1px solid var(--rule);
  animation: col-in 0.35s cubic-bezier(0.16,1,0.3,1) both;
}
.col:last-child { border-right: none; }
.col:nth-child(1) { animation-delay: 0.04s; }
.col:nth-child(2) { animation-delay: 0.10s; }
.col:nth-child(3) { animation-delay: 0.16s; }

@keyframes col-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Section Head ────────────────────────────── */
.col-head {
  padding: 12px 0 14px;
  border-top: 3px solid var(--tx-1);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}
.col[data-cat="edu"]   .col-head { border-top-color: var(--c-edu); }
.col[data-cat="paper"] .col-head { border-top-color: var(--c-paper); }
.col[data-cat="tech"]  .col-head { border-top-color: var(--c-tech); }

.col-title {
  font: 800 var(--t-xl)/1.15 var(--font);
  letter-spacing: -0.014em;
  color: var(--tx-1);
}
.col-count {
  font: 600 var(--t-xs)/1 var(--font);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tx-3);
}

/* ── Entry (list item) ───────────────────────── */
.col-list {
  display: flex;
  flex-direction: column;
}

.entry {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  column-gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.entry:last-child { border-bottom: none; }

.entry-num {
  font: 600 var(--t-sm)/1 var(--font);
  font-variant-numeric: tabular-nums;
  color: var(--tx-mute);
  padding-top: 3px;
  letter-spacing: 0.02em;
  user-select: none;
}
.col[data-cat="edu"]   .entry-num { color: var(--c-edu); }
.col[data-cat="paper"] .entry-num { color: var(--c-paper); }
.col[data-cat="tech"]  .entry-num { color: var(--c-tech); }

.entry-body { min-width: 0; display: flex; flex-direction: column; gap: 4px; }

/* meta row */
.entry-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font: 500 var(--t-xs)/1 var(--font);
  color: var(--tx-3);
  margin-bottom: 2px;
}
.entry-src {
  font-weight: 700;
  color: var(--tx-2);
  letter-spacing: 0.01em;
  max-width: 60%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.entry-dt {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.entry-sep {
  color: var(--rule-2);
  font-size: 0.625rem;
}
.entry-kw {
  padding: 2px 6px;
  border-radius: 2px;
  font: 700 var(--t-2xs)/1 var(--font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.col[data-cat="edu"]   .entry-kw { background: var(--c-edu-s); color: var(--c-edu); }
.col[data-cat="paper"] .entry-kw { background: var(--c-pap-s); color: var(--c-paper); }
.col[data-cat="tech"]  .entry-kw { background: var(--c-tec-s); color: var(--c-tech); }

/* title — 3줄까지 허용 (제목이 핵심 정보) */
.entry-title {
  font: 600 var(--t-lg)/1.4 var(--font);
  color: var(--tx-1);
  letter-spacing: -0.006em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}
.entry-title a {
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 0.2s ease, color 0.12s;
}
.col[data-cat="edu"]   .entry-title a:hover { color: var(--c-edu); background-size: 100% 1px; }
.col[data-cat="paper"] .entry-title a:hover { color: var(--c-paper); background-size: 100% 1px; }
.col[data-cat="tech"]  .entry-title a:hover { color: var(--c-tech); background-size: 100% 1px; }

/* authors (paper) — 1줄 ellipsis */
.entry-by {
  font: 400 var(--t-xs)/1.3 var(--font);
  color: var(--tx-3);
  font-style: italic;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

/* description — 전체 표시 */
.entry-desc {
  font: 400 var(--t-sm)/1.55 var(--font);
  color: var(--tx-2);
  overflow-wrap: anywhere;
  margin-top: 4px;
}

/* actions — paper PDF link only */
.entry-actions { display: flex; gap: 8px; margin-top: 4px; }
.entry-pdf {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border: 1px solid var(--rule-2);
  border-radius: 3px;
  font: 600 var(--t-2xs)/1 var(--font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tx-2);
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}
.entry-pdf:hover {
  border-color: var(--c-paper);
  color: var(--c-paper);
  background: var(--c-pap-s);
}

/* empty state */
.col-empty {
  padding: 32px 0;
  text-align: center;
  font: 400 var(--t-sm)/1.4 var(--font);
  color: var(--tx-3);
  font-style: italic;
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 1140px) {
  .news-grid {
    grid-template-columns: 1fr;
    padding: 20px 0 48px;
  }
  .col {
    padding: 0 16px;
    border-right: none;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 32px;
    margin-bottom: 16px;
  }
  .col:last-child { border-bottom: none; margin-bottom: 0; }

  /* chip 필터 적용 시 비매칭 컬럼 숨김 */
  body[data-filter="edu"]   .col[data-cat="paper"],
  body[data-filter="edu"]   .col[data-cat="tech"],
  body[data-filter="paper"] .col[data-cat="edu"],
  body[data-filter="paper"] .col[data-cat="tech"],
  body[data-filter="tech"]  .col[data-cat="edu"],
  body[data-filter="tech"]  .col[data-cat="paper"] { display: none; }
}

@media (max-width: 600px) {
  .header-inner { padding: 12px 16px; }
  .brand-name { font-size: 1rem; }
}

/* ── Footer ──────────────────────────────────── */
.site-footer {
  max-width: 1320px;
  margin: 0 auto;
  padding: 36px 24px 32px;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: center;
  font: 400 var(--t-xs)/1.4 var(--font);
  color: var(--tx-3);
}

/* Profile card — 닷커넥터(김진관) */
.profile-card {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 22px 28px 18px;
  min-width: 240px;
  background: var(--hd-bg);     /* deep navy in both modes — 일관성 */
  border-radius: 14px;
  color: var(--hd-tx);
  transition: transform 0.25s var(--ease, cubic-bezier(0.16,1,0.3,1)),
              box-shadow 0.25s ease;
  box-shadow: 0 1px 0 oklch(0% 0 0 / 0.04);
}
.profile-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -10px oklch(0% 0 0 / 0.25);
}

.profile-photo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid oklch(100% 0 0 / 0.08);
  background: var(--hd-bg);
  margin-bottom: 4px;
}

.profile-name {
  font: 700 0.9375rem/1.2 var(--font);
  letter-spacing: -0.005em;
  color: var(--c-tech);
}
.profile-name-sub {
  font-weight: 500;
  color: var(--c-tech);
  opacity: 0.85;
  margin-left: 2px;
}

.profile-bio {
  font: 400 var(--t-sm)/1.4 var(--font);
  color: oklch(78% 0.012 240);
  margin-top: 2px;
  text-align: center;
}

.profile-link-hint {
  font: 500 var(--t-2xs)/1 var(--font);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
  color: oklch(58% 0.018 240);
  margin-top: 6px;
}

/* Footer meta row */
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: center;
  align-items: center;
  font: 400 var(--t-xs)/1.4 var(--font);
  color: var(--tx-3);
}
.footer-updated {
  font-variant-numeric: tabular-nums;
}
.footer-link {
  color: var(--tx-3);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 0.12s;
}
.footer-link:hover { color: var(--tx-1); }

@media (max-width: 600px) {
  .site-footer { padding: 28px 16px 28px; gap: 18px; }
  .profile-card { padding: 18px 22px 14px; min-width: auto; width: 100%; max-width: 340px; }
  .profile-photo { width: 56px; height: 56px; }
}

/* ── A11y ────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .col, .brand-signal { animation: none; }
  html { scroll-behavior: auto; }
}
:focus-visible { outline: 2px solid var(--c-paper); outline-offset: 2px; border-radius: 2px; }

/* ── Skip link ───────────────────────────────── */
.skip-link {
  position: fixed;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  padding: 10px 22px;
  background: var(--hd-bg);
  color: var(--hd-tx);
  font: 700 var(--t-md)/1 var(--font);
  border-radius: 0 0 10px 10px;
  white-space: nowrap;
  transition: top 0.15s;
  text-decoration: none;
}
.skip-link:focus-visible { top: 0; outline: none; }

/* ── Search bar ──────────────────────────────── */
.search-bar-wrap {
  background: var(--surf);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: calc(var(--header-h) + var(--date-nav-h));
  z-index: 87;
  min-height: var(--search-h);
}
.search-bar-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 9px 24px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.search-icon { flex-shrink: 0; color: var(--tx-mute); }

.search-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  font: 400 var(--t-md)/1 var(--font);
  color: var(--tx-1);
  outline: none;
  padding: 3px 0;
}
.search-input::placeholder { color: var(--tx-mute); }
.search-input::-webkit-search-cancel-button { display: none; }

.search-count-badge {
  font: 600 var(--t-xs)/1 var(--font);
  font-variant-numeric: tabular-nums;
  color: var(--tx-3);
  white-space: nowrap;
  padding: 3px 8px;
  background: var(--rule);
  border-radius: 99px;
}
.search-count-badge[hidden] { display: none; }

.search-clear {
  padding: 3px 7px;
  border-radius: 4px;
  font-size: var(--t-sm);
  line-height: 1;
  color: var(--tx-3);
  transition: background 0.1s, color 0.1s;
}
.search-clear:hover { background: var(--rule); color: var(--tx-1); }
.search-clear[hidden] { display: none; }

/* ── Cat-filter: shift down for search bar (≤1140px) ── */
@media (max-width: 1140px) {
  .cat-filter { top: calc(var(--header-h) + var(--date-nav-h) + var(--search-h)); }
  .search-bar-inner { padding: 9px 16px; }
}

/* ── Hide entry when search/kw filter is active ─ */
.entry--hidden-search,
.entry--hidden-kw { display: none; }

/* ── Read tracking ───────────────────────────── */
.entry--read { opacity: 0.45; transition: opacity 0.2s; }
.entry--read:hover { opacity: 0.72; }
.entry--read .entry-num { position: relative; }
.entry--read .entry-num::after {
  content: '✓';
  position: absolute;
  bottom: -9px;
  left: 0;
  font-size: 0.6em;
  line-height: 1;
  opacity: 0.7;
}

/* ── Keyword badge: clickable + active state ─── */
.entry-kw { cursor: pointer; user-select: none; transition: box-shadow 0.12s; }
.entry-kw:hover { opacity: 0.8; }
.entry-kw.kw-active { box-shadow: 0 0 0 2px currentColor; }

/* ── Loading indicator (date-nav) ────────────── */
.nav-loading {
  display: flex;
  align-items: center;
  gap: 6px;
  font: 400 var(--t-xs)/1 var(--font);
  color: var(--tx-mute);
  padding: 5px 0;
}
.nav-spinner {
  width: 12px; height: 12px;
  border: 1.5px solid var(--rule-2);
  border-top-color: var(--tx-3);
  border-radius: 50%;
  animation: spin 0.65s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ───────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 400;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--hd-bg);
  color: var(--hd-tx);
  padding: 10px 18px;
  border-radius: 8px;
  font: 500 var(--t-sm)/1.4 var(--font);
  box-shadow: 0 6px 24px -4px oklch(0% 0 0 / 0.28);
  pointer-events: auto;
  max-width: min(380px, calc(100vw - 32px));
  text-align: center;
  animation: toast-in 0.22s cubic-bezier(0.16,1,0.3,1) both;
}
.toast--error { background: oklch(36% 0.16 25); color: oklch(96% 0.01 25); }
.toast--info  { background: oklch(22% 0.028 252); color: var(--hd-tx); }
.toast--out   { animation: toast-out 0.25s ease forwards; }

@keyframes toast-in  { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { from { opacity: 1; transform: none; } to { opacity: 0; transform: translateY(-8px); } }

@media (prefers-reduced-motion: reduce) {
  .nav-spinner { animation: none; }
  .toast, .toast--out { animation: none; }
}

/* ── Footer extras ───────────────────────────────── */
.footer-totop {
  text-decoration: none;
  font: 400 var(--t-xs)/1 var(--font);
  color: var(--tx-mute);
  transition: color 0.15s;
  margin-left: auto;
}
.footer-totop:hover { color: var(--tx-1); }

/* ── Mobile optimisation ─────────────────────────── */

/* Prevent double-tap zoom on tap targets */
.cat-chip, .date-pill, .theme-toggle, .entry-kw,
.search-clear, .footer-link, .footer-totop {
  touch-action: manipulation;
}

@media (max-width: 600px) {
  /* iOS auto-zoom fires when focused input font-size < 16px */
  .search-input { font-size: 1rem; }

  /* Sticky stack: mobile header ≈ 51px (padding 12px vs 14px, font 16px vs 17px) */
  :root { --header-h: 51px; }

  /* Touch targets — 44px Apple HIG minimum */
  .cat-chip  { padding: 8px 14px; min-height: 36px; }
  .date-pill { padding: 7px 10px; }
  .theme-toggle {
    min-width: 36px;
    min-height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* Tighter entry rhythm on small screens */
  .entry { padding: 12px 0; }

  /* Footer */
  .footer-totop { margin-left: 0; }
  .footer-meta  { gap: 12px; }
}