/* ============================================================
   LASS @ CIKM 2026 — Unified Theme (dark/light toggle)
   所有颜色通过 CSS 自定义属性控制；
   默认深色，html[data-theme="light"] 切换为浅色。
   过渡动画：0.45s ease，作用于所有色彩相关属性。
============================================================ */

/* ── CSS 变量：深色（默认）────────────────────────────────── */
:root {
  --bg:           #0D1526;
  --bg-alt:       #131F38;
  --card:         #1A2B4A;
  --card-hover:   #1F3358;
  --primary:      #5B9BD5;
  --accent:       #D4A843;
  --text:         #E8EDF4;
  --text-body:    #BAC5D6;
  --text-muted:   #8895A7;
  --border:       rgba(255,255,255,0.08);
  --border-card:  rgba(255,255,255,0.07);
  --nav-bg:       rgba(13,21,38,0.88);
  --nav-border:   rgba(91,155,213,0.18);
  --footer-bg:    #090F1D;
  --sub-box-bg:   rgba(91,155,213,0.07);
  --sub-box-bd:   rgba(91,155,213,0.22);
  --prog-shade:   rgba(255,255,255,0.025);
  --hero-brightness: 0.75;
}

/* ── CSS 变量：浅色 ──────────────────────────────────────── */
html[data-theme="light"] {
  --bg:           #FAFAF7;
  --bg-alt:       #F0EFE9;
  --card:         #FFFFFF;
  --card-hover:   #F5F4EF;
  --primary:      #1A6BAD;
  --accent:       #C0392B;
  --text:         #2C2C2C;
  --text-body:    #444444;
  --text-muted:   #888888;
  --border:       #DDDDDD;
  --border-card:  #E0DFD8;
  --nav-bg:       rgba(26,107,173,0.96);
  --nav-border:   transparent;
  --footer-bg:    #1A3A5C;
  --sub-box-bg:   #EBF3FA;
  --sub-box-bd:   #B8D5EE;
  --prog-shade:   #F5F4EF;
  --hero-brightness: 0.72;
}

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

/* ── 全局过渡（颜色渐变切换）────────────────────────────── */
body, .date-card, .track-card, .org-card, .submission-box,
#navbar, footer, .section-alt, .prog-row-shade {
  transition:
    background-color 0.45s ease,
    border-color     0.45s ease,
    color            0.45s ease,
    box-shadow       0.45s ease;
}

/* ── Base ────────────────────────────────────────────────── */
body {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
strong { color: var(--text); }
em { font-style: italic; }

/* ── Fixed Navbar ────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--nav-border);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 52px;
  padding-right: 52px;
}

/* ── nav links wrapper ── */
#nav-links {
  display: flex;
  align-items: center;
}

#navbar a {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0 14px;
  height: 52px;
  line-height: 52px;
  display: inline-block;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}

html[data-theme="light"] #navbar a { color: rgba(255,255,255,0.75); }

#navbar a:hover,
#navbar a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

html[data-theme="light"] #navbar a:hover,
html[data-theme="light"] #navbar a.active {
  color: #fff;
  border-bottom-color: #B8960C;
}

/* ── hamburger button (hidden on desktop) ── */
#nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1001;
}

#nav-hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

/* open state: animate to × */
#nav-hamburger.open span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
#nav-hamburger.open span:nth-child(2) { opacity: 0; }
#nav-hamburger.open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* ── responsive: show hamburger below 860px ── */
@media (max-width: 860px) {
  #navbar {
    justify-content: center;
    padding-right: 52px;
    padding-left: 52px;
  }

  #nav-hamburger { display: flex; }

  #nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: 52px;
    left: 0; right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--nav-border);
    padding: 8px 0 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  }

  #nav-links.open { display: flex; }

  #navbar a {
    height: auto;
    line-height: 1;
    padding: 12px 24px;
    border-bottom: none;
    border-left: 3px solid transparent;
    font-size: 0.85rem;
  }

  #navbar a:hover,
  #navbar a.active {
    border-left-color: var(--accent);
    border-bottom: none;
    background: rgba(255,255,255,0.04);
  }
}

/* ── 主题切换按钮 ─────────────────────────────────────────── */
#theme-toggle {
  position: fixed;
  top: 10px;
  right: 16px;
  z-index: 1000;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: background 0.45s ease, border-color 0.45s ease, transform 0.2s ease;
  line-height: 1;
}

#theme-toggle:hover { transform: scale(1.12); }

/* ── Hero / Banner ───────────────────────────────────────── */
#hero {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}

/* 两张图叠放，通过 opacity 互换 */
.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.7s ease, filter 0.7s ease;
}

#hero-img-dark {
  /* 夜间图 762px 高：向下偏移锚定建筑中部拱廊 */
  object-position: 30% 58%;
  filter: brightness(var(--hero-brightness)) saturate(0.9);
  opacity: 1;
}

#hero-img-light {
  /* 白天图 1277px 高：同样锚定中部拱廊与夜间对齐 */
  object-position: 30% 44%;
  filter: brightness(0.78) saturate(0.95);
  opacity: 0;
}

html[data-theme="light"] #hero-img-dark { opacity: 0; }
html[data-theme="light"] #hero-img-light { opacity: 1; }

#hero::after {
  content: '';
  position: absolute;
  inset: 0;
  transition: background 0.7s ease;
  background: linear-gradient(
    to bottom,
    rgba(13,21,38,0.55) 0%,
    rgba(13,21,38,0.05) 38%,
    rgba(13,21,38,0.72) 100%
  );
}

html[data-theme="light"] #hero::after {
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.20) 0%,
    rgba(0,0,0,0.02) 38%,
    rgba(0,0,0,0.52) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 52px 52px;
}

.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 3px;
  margin-bottom: 16px;
  transition: background 0.45s ease;
}

html[data-theme="light"] .hero-tag { color: #fff; }

.hero-title {
  font-size: clamp(1.7rem, 3.8vw, 3rem);
  color: #fff;
  font-family: 'Georgia', serif;
  text-shadow: 0 2px 24px rgba(0,0,0,0.65);
  margin-bottom: 18px;
  max-width: 820px;
  line-height: 1.25;
}

.hero-subtitle {
  font-size: 1rem;
  color: rgba(232,237,244,0.75);
  font-style: italic;
  margin-bottom: 14px;
  letter-spacing: 0.01em;
}

.hero-meta {
  font-size: 0.98rem;
  color: rgba(232,237,244,0.85);
  letter-spacing: 0.02em;
}

.hero-meta span { display: inline-block; margin-right: 6px; }
.hero-meta .sep { color: var(--accent); margin: 0 8px; transition: color 0.45s ease; }
.hero-meta strong { color: var(--accent); font-weight: 600; transition: color 0.45s ease; }

/* ── Section wrapper ─────────────────────────────────────── */
.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 80px 52px;
}

.section-alt { background: var(--bg-alt); }

/* ── Section heading ─────────────────────────────────────── */
.section-title {
  font-size: 1.6rem;
  color: var(--text);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  margin-bottom: 40px;
  display: inline-block;
  letter-spacing: 0.01em;
  transition: color 0.45s ease, border-color 0.45s ease;
}

/* ── Overview ────────────────────────────────────────────── */
#overview p {
  font-size: 0.98rem;
  margin-bottom: 1.1em;
  color: var(--text-body);
  max-width: 900px;
  transition: color 0.45s ease;
}

/* ── Important Dates ─────────────────────────────────────── */
.dates-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  max-width: 960px;
}

.date-card {
  background: var(--card);
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 20px 22px;
}

.date-card:hover { background: var(--card-hover); border-left-color: var(--accent); }

.date-card .label {
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  margin-bottom: 8px;
  transition: color 0.45s ease;
}

.date-card .value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.45s ease;
}

.date-card.highlight { border-left-color: var(--accent); }
.date-card.highlight .value { color: var(--accent); }

/* ── Call for Papers ─────────────────────────────────────── */
.cfp-intro {
  font-size: 0.98rem;
  color: var(--text-body);
  max-width: 900px;
  margin-bottom: 36px;
  transition: color 0.45s ease;
}

.cfp-tracks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-bottom: 44px;
}

.track-card {
  background: var(--card);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 26px;
}

.track-card:hover { background: var(--card-hover); border-color: var(--border); }

.track-card h3 {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 14px;
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 0.45s ease;
}

.track-card ul { list-style: none; padding: 0; }

.track-card ul li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding: 4px 0 4px 16px;
  position: relative;
  line-height: 1.5;
  transition: color 0.45s ease;
}

.track-card ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
  transition: color 0.45s ease;
}

.submission-box {
  background: var(--sub-box-bg);
  border: 1px solid var(--sub-box-bd);
  border-radius: 10px;
  padding: 30px 36px;
  max-width: 880px;
}

.submission-box h3 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 18px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  transition: color 0.45s ease;
}

.submission-box ul {
  list-style: disc;
  padding-left: 20px;
  color: var(--text-body);
  font-size: 0.94rem;
  transition: color 0.45s ease;
}

.submission-box ul li { margin-bottom: 8px; }
.submission-box a { color: var(--primary); font-weight: 600; }
.submission-box a:hover { color: var(--accent); }

/* ── Keynote Speakers ────────────────────────────────────── */
.speakers-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 44px;
  justify-content: flex-start;
}

.speaker-card { width: 200px; text-align: center; }

.speaker-card img {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(91,155,213,0.35);
  box-shadow: 0 0 0 5px rgba(91,155,213,0.08), 0 6px 20px rgba(0,0,0,0.2);
  margin-bottom: 14px;
  transition: border-color 0.45s ease;
}

html[data-theme="light"] .speaker-card img {
  border-color: rgba(26,107,173,0.3);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

.speaker-card .speaker-photo-placeholder {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--card) 0%, var(--card-hover) 100%);
  border: 2px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 2.8rem;
  margin: 0 auto 14px;
  transition: background 0.45s ease, border-color 0.45s ease, color 0.45s ease;
}

.speaker-card .name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 5px;
  transition: color 0.45s ease;
}

.speaker-card .affil {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
  transition: color 0.45s ease;
}

.speaker-card .talk-title {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--accent);
  margin-top: 8px;
  transition: color 0.45s ease;
}

/* ── Program ─────────────────────────────────────────────── */
.program-table {
  width: 100%;
  border-collapse: collapse;
  max-width: 880px;
}

.program-table tr { border-bottom: 1px solid var(--border); transition: border-color 0.45s ease; }
.program-table tr:last-child { border-bottom: none; }

.program-table td { padding: 14px 18px; vertical-align: top; font-size: 0.93rem; }

.prog-time {
  width: 140px;
  white-space: nowrap;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.87rem;
  font-variant-numeric: tabular-nums;
  transition: color 0.45s ease;
}

.prog-title { font-weight: 600; color: var(--primary); transition: color 0.45s ease; }
.prog-title.special { color: var(--accent); }

.prog-detail {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-top: 4px;
  transition: color 0.45s ease;
}

.prog-row-shade { background: var(--prog-shade); }

/* ── Organizers ──────────────────────────────────────────── */
.organizers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 12px;
  max-width: 980px;
}

.org-card {
  background: var(--card);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.org-card:hover { background: var(--card-hover); border-color: var(--border); }

.org-photo {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border-card);
  transition: border-color 0.45s ease;
}

.org-photo-placeholder {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--card-hover), var(--card));
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  font-weight: 700;
  flex-shrink: 0;
  border: 2px solid var(--border-card);
  transition: background 0.45s ease, color 0.45s ease;
}

.org-info .org-name {
  font-weight: 700;
  font-size: 0.93rem;
  color: var(--text);
  transition: color 0.45s ease;
}

.org-info .org-affil {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 2px;
  transition: color 0.45s ease;
}

.org-info a {
  color: var(--primary);
  font-size: 0.82rem;
  margin-top: 3px;
  display: inline-block;
}

.org-info a:hover { color: var(--accent); }

/* ── Program Committee ───────────────────────────────────── */
.pc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
  max-width: 980px;
}

.pc-item {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 12px 16px;
  transition: background 0.2s, border-color 0.2s;
}

.pc-item:hover { background: var(--card-hover); }

.pc-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  transition: color 0.45s ease;
}

.pc-affil {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
  transition: color 0.45s ease;
}

/* ── Footer ──────────────────────────────────────────────── */
footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  text-align: center;
  padding: 36px 24px;
  font-size: 0.875rem;
}

footer p + p { margin-top: 8px; }
footer a { color: var(--accent); }
footer a:hover { color: var(--text); }

/* ── CTA Button ──────────────────────────────────────────── */
.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  padding: 13px 30px;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 22px;
  transition: opacity 0.2s, transform 0.15s, background 0.45s ease;
}

.cta-btn:hover {
  opacity: 0.88;
  color: #fff;
  transform: translateY(-2px);
}

/* ── LASS 2025 Stats Banner ──────────────────────────────── */
.stats-banner {
  display: flex;
  flex-wrap: nowrap;
  background: var(--sub-box-bg);
  border: 1px solid var(--sub-box-bd);
  border-radius: 10px;
  overflow: hidden;
  margin: 32px 0 0;
  max-width: 980px;
  transition: background 0.45s ease, border-color 0.45s ease;
}

.stat-block {
  flex: 1;
  min-width: 0;
  padding: 20px 24px;
  text-align: center;
  border-right: 1px solid var(--sub-box-bd);
  transition: border-color 0.45s ease;
}

.stat-block:last-child { border-right: none; }

.stat-block .s-num {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  transition: color 0.45s ease;
}

.stat-block .s-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-top: 5px;
  display: block;
  line-height: 1.4;
  transition: color 0.45s ease;
}

/* ── Why Submit Cards ────────────────────────────────────── */
.why-submit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 36px;
  max-width: 980px;
}

.why-card {
  background: var(--card);
  border: 1px solid var(--border-card);
  border-top: 3px solid var(--accent);
  border-radius: 10px;
  padding: 22px 20px;
  transition: background 0.45s ease, border-color 0.45s ease;
}

.why-card:hover { background: var(--card-hover); }

.why-card .why-heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
  transition: color 0.45s ease;
}

.why-card .why-body {
  font-size: 0.9rem;
  color: var(--text-body);
  line-height: 1.55;
  transition: color 0.45s ease;
}

.why-card .why-body strong {
  color: var(--text);
  font-weight: 700;
}

/* ── Domain Tags ─────────────────────────────────────────── */
.domain-tags-wrap { margin: 0 0 32px; }

.domain-tags-label {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color 0.45s ease;
}

.domain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.domain-tag {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--primary);
  border-radius: 4px;
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-body);
  letter-spacing: 0.02em;
  transition: background 0.2s, border-color 0.2s, color 0.45s ease;
}

.domain-tag:hover { background: var(--card-hover); border-left-color: var(--accent); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
  /* navbar handled by hamburger menu above */
  #theme-toggle { top: 8px; right: 10px; }

  #hero { height: 380px; }
  .hero-content { padding: 0 24px 36px; }
  .hero-title { font-size: 1.5rem; }

  .section { padding: 52px 24px; }

  .speakers-grid { justify-content: center; }
  .speaker-card { width: 160px; }
  .speaker-card img,
  .speaker-card .speaker-photo-placeholder { width: 110px; height: 110px; }

  .stats-banner { flex-wrap: wrap; }
  .stat-block { padding: 14px 10px; flex: 0 0 33.33%; }
  .stat-block .s-num { font-size: 1.4rem; }
  .stat-block .s-label { font-size: 0.68rem; }

  .why-submit-grid { grid-template-columns: 1fr; }
  .dates-grid { grid-template-columns: repeat(2, 1fr); }
  .cfp-tracks { grid-template-columns: 1fr; }
}

/* 中等屏：why-submit 2×2，dates 3列 */
@media (min-width: 769px) and (max-width: 900px) {
  .why-submit-grid { grid-template-columns: repeat(2, 1fr); }
  .dates-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── LASS 2025 Award Block ───────────────────────────────── */
.award-block {
  background: linear-gradient(135deg, rgba(212,168,67,0.12) 0%, rgba(212,168,67,0.04) 100%);
  border: 1px solid rgba(212,168,67,0.35);
  border-radius: 14px;
  padding: 28px 32px;
  margin-bottom: 12px;
}

.award-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.award-icon { font-size: 1.4rem; }

.award-papers {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.award-paper-card {
  background: var(--card);
  border: 1px solid rgba(212,168,67,0.2);
  border-radius: 8px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.award-badge {
  flex-shrink: 0;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 3px 9px;
  border-radius: 20px;
  white-space: nowrap;
}

html[data-theme="light"] .award-badge { color: #1a1a1a; }

.award-paper-title {
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.4;
}

.award-paper-title a {
  color: var(--text);
  text-decoration: none;
}

.award-paper-title a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* ── LASS 2025 Archive List ──────────────────────────────── */
.archive-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.archive-item {
  background: var(--card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 14px 18px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: border-color 0.2s, background 0.2s;
}

.archive-item:hover {
  border-color: var(--primary);
  background: var(--card-hover);
}

.archive-meta {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  min-width: 110px;
}

.archive-award-tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(212,168,67,0.12);
  border: 1px solid rgba(212,168,67,0.3);
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

.archive-title {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  line-height: 1.45;
  flex: 1;
}

.archive-title:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* items without meta still align nicely */
.archive-item:not(:has(.archive-meta)) .archive-title,
.archive-item .archive-title:only-child {
  padding-left: 0;
}

@media (max-width: 600px) {
  .award-paper-card { flex-direction: column; align-items: flex-start; gap: 8px; }
  .archive-item { flex-direction: column; gap: 6px; }
  .archive-meta { min-width: unset; }
}