:root {
  --fg: #1a1a1a;
  --fg-muted: #6b7280;
  --bg: #f4f6f8;
  --card: #ffffff;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --bad: #dc2626;
  --warn: #f59e0b;
  --visa: #2563eb;
  --news: #6366f1;
  --exchange_rate: #10b981;
  --scholarship: #db2777;
  --exam: #8b5cf6;
  --community: #f59e0b;
  --admission: #0ea5e9;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --radius: 10px;
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    "Apple SD Gothic Neo",
    "Pretendard",
    sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ===== Header ===== */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.site-header h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}
.site-header h1 a {
  color: inherit;
}
.site-header h1 a:hover {
  text-decoration: none;
  color: var(--accent);
}
.site-header nav {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  flex-wrap: wrap;
}
.site-header nav a {
  color: var(--fg-muted);
  font-weight: 500;
}
.site-header nav a:hover {
  color: var(--accent);
  text-decoration: none;
}
.search-form input {
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  min-width: 200px;
  font-size: 0.9rem;
  background: var(--bg);
}
.search-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  background: var(--card);
}

/* ===== Layout ===== */
main {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem;
}
main h2 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  font-weight: 700;
}
main h3 {
  margin: 2rem 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ===== Briefing card (top of detail/home) ===== */
.briefing-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.briefing-card h2,
.briefing-card h3 {
  margin-top: 0;
}
.briefing-card .meta {
  color: var(--fg-muted);
  font-size: 0.875rem;
  margin: 0.25rem 0 0.75rem;
}
.briefing-card.failed {
  border-color: var(--bad);
}
.badge-failed {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  background: var(--bad);
  color: white;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-left: 0.5rem;
}
.briefing-snippet {
  margin: 0.5rem 0 0;
  color: var(--fg-muted);
  font-size: 0.875rem;
  line-height: 1.5;
  max-height: 4.5em;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

/* ===== Briefing body (raw markdown render) ===== */
.briefing-body {
  font-size: 0.97rem;
  line-height: 1.75;
}
.briefing-body p {
  margin: 0 0 1em;
  white-space: pre-wrap;
}
.briefing-body strong {
  font-weight: 700;
  color: var(--fg);
}
.briefing-body em {
  color: var(--fg-muted);
  font-style: italic;
  font-size: 0.92em;
}
.briefing-body a {
  word-break: break-all;
  font-size: 0.85em;
  color: var(--fg-muted);
}
.briefing-body a:hover {
  color: var(--accent);
}

/* ===== Category group ===== */
.category-group {
  margin: 1rem 0 1.5rem;
}
.category-heading {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  text-transform: none;
  letter-spacing: normal;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.category-count {
  color: var(--fg-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

/* ===== Item card ===== */
.item-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.15rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s;
}
.item-card:hover {
  border-color: var(--border-strong);
}
.item-card--raw {
  background: #fafbfc;
  border-style: dashed;
}
.item-card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
  font-size: 0.78rem;
}
.item-source {
  color: var(--fg-muted);
  font-weight: 500;
}

/* ===== Category badges ===== */
.item-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: white;
  background: var(--news);
}
.item-badge--visa {
  background: var(--visa);
}
.item-badge--news {
  background: var(--news);
}
.item-badge--exchange_rate {
  background: var(--exchange_rate);
}
.item-badge--scholarship {
  background: var(--scholarship);
}
.item-badge--exam {
  background: var(--exam);
}
.item-badge--community {
  background: var(--community);
}
.item-badge--admission {
  background: var(--admission);
}

/* ===== Item content ===== */
.item-title {
  margin: 0.25rem 0 0.35rem;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--fg);
}
.item-orig-title {
  margin: 0 0 0.65rem;
  font-size: 0.82rem;
  color: var(--fg-muted);
  line-height: 1.4;
}
.item-orig-title em {
  font-style: normal;
}
.item-summary {
  margin: 0.5rem 0 0.75rem;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--fg);
}
.item-summary--empty {
  color: var(--fg-muted);
  font-style: italic;
}
.item-link {
  margin: 0.4rem 0 0;
}
.item-link a {
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Raw items / message collapse ===== */
.raw-items,
.raw-message {
  margin: 1.5rem 0;
  padding: 0.75rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.raw-items > summary,
.raw-message > summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--fg-muted);
  font-size: 0.9rem;
  padding: 0.25rem 0;
  user-select: none;
}
.raw-items > summary:hover,
.raw-message > summary:hover {
  color: var(--accent);
}
.raw-list {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}
.raw-list li {
  margin-bottom: 0.5rem;
  line-height: 1.5;
}
.raw-list li small {
  display: block;
  color: var(--fg-muted);
  font-size: 0.78rem;
  margin-top: 0.15rem;
}

/* ===== Empty state ===== */
.empty-state {
  text-align: center;
  color: var(--fg-muted);
  padding: 3rem 1rem;
  background: var(--card);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}
.empty-state p {
  margin: 0.25rem 0;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
  color: var(--fg-muted);
  font-size: 0.8rem;
}

/* ===== Back link ===== */
.back-link {
  margin: 2rem 0 0;
}

/* ===== Mobile ===== */
@media (max-width: 640px) {
  main {
    padding: 1rem;
  }
  .site-header {
    padding: 0.75rem 1rem;
  }
  .site-header nav {
    width: 100%;
    gap: 0.75rem;
  }
  .search-form {
    flex: 1;
  }
  .search-form input {
    width: 100%;
    min-width: 0;
  }
  .briefing-card {
    padding: 1.25rem 1rem;
  }
  .item-card {
    padding: 0.85rem 1rem;
  }
  .item-title {
    font-size: 0.97rem;
  }
  main h2 {
    font-size: 1.2rem;
  }
  main h3 {
    font-size: 0.95rem;
  }
  .health-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
}