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

body {
  font-family: system-ui, -apple-system, sans-serif;
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
  color: #111;
  background: #fff;
  line-height: 1.5;
}

a { color: #111; }
a:hover { color: #555; }

/* ─── Header ─────────────────────────────────── */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
}
.site-title {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
}
header nav a {
  font-size: 0.9rem;
  text-decoration: none;
  color: #555;
}
header nav a:hover { text-decoration: underline; }

/* ─── Month navigation ───────────────────────── */
.month-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.month-nav h1 {
  font-size: 1.4rem;
  margin: 0;
  text-align: center;
  flex: 1;
}
.month-nav a {
  font-size: 0.9rem;
  text-decoration: none;
  color: #555;
  white-space: nowrap;
}
.month-nav a:hover { text-decoration: underline; }

/* ─── Calendar day headers ───────────────────── */
.calendar-day-headers {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.2rem;
  margin-bottom: 0.2rem;
}
.calendar-day-headers span {
  text-align: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: #888;
  text-transform: uppercase;
  padding: 0.2rem 0;
}

/* ─── Calendar grid ──────────────────────────── */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.2rem;
}
.calendar-cell {
  border: 1px solid #e8e8e8;
  padding: 0.35rem;
  min-height: 5rem;
  vertical-align: top;
}
.calendar-cell.empty {
  background: #fafafa;
  border-color: #f2f2f2;
}
.calendar-cell.no-events {
  background: #fdfdfd;
}

/* ─── Day number ─────────────────────────────── */
.day-number {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: #999;
  margin-bottom: 0.3rem;
}

/* ─── Events in a cell ───────────────────────── */
.day-events {
  list-style: none;
  margin: 0;
  padding: 0;
}
.event-item {
  margin-bottom: 0.45rem;
  line-height: 1.3;
}
.event-time {
  display: inline-block;
  font-size: 0.65rem;
  color: #888;
  background: #f0f0f0;
  padding: 0 0.25rem;
  border-radius: 2px;
  margin-bottom: 0.1rem;
  font-variant-numeric: tabular-nums;
}
.event-item a {
  font-size: 0.78rem;
  text-decoration: underline;
  word-break: break-word;
}
.event-multiday .event-item a::before {
  content: "⟷ ";
  font-size: 0.65rem;
  color: #aaa;
}
.event-links {
  list-style: none;
  margin: 0.15rem 0 0 0;
  padding: 0;
}
.event-links li {
  font-size: 0.7rem;
}
.event-links li::before {
  content: "→ ";
  color: #bbb;
}
.event-links a {
  color: #555;
  text-decoration: none;
}
.event-links a:hover { text-decoration: underline; }

/* ─── Archive page ───────────────────────────── */
.archive-month {
  margin-bottom: 2rem;
}
.archive-month h2 {
  font-size: 1.1rem;
  margin: 0 0 0.5rem 0;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.archive-month h2 a { text-decoration: none; }
.archive-month h2 a:hover { text-decoration: underline; }
.event-count {
  font-size: 0.8rem;
  color: #999;
  font-weight: normal;
}
.archive-event-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.archive-event-list li {
  padding: 0.25rem 0;
  font-size: 0.9rem;
  border-bottom: 1px solid #f5f5f5;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.event-day {
  font-size: 0.75rem;
  color: #aaa;
  font-variant-numeric: tabular-nums;
  min-width: 1.2rem;
}

/* ─── Permalink button ───────────────────────── */
.page-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.page-actions--right {
  justify-content: flex-end;
  margin-bottom: 0.5rem;
}
.permalink-btn {
  background: none;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  font-size: 0.75rem;
  color: #aaa;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  vertical-align: middle;
  line-height: 1;
}
.permalink-btn:hover {
  border-color: #aaa;
  color: #555;
}

/* ─── Single event page ──────────────────────── */
.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: #666;
  text-decoration: none;
  margin-bottom: 1rem;
}
.back-link:hover { text-decoration: underline; }
.event-detail h1 {
  font-size: 1.5rem;
  margin: 0 0 0.75rem 0;
}
.event-meta {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.event-links-detail {
  list-style: none;
  margin: 0 0 1rem 0;
  padding: 0;
}
.event-links-detail li {
  margin-bottom: 0.3rem;
}
.event-links-detail a {
  font-size: 0.95rem;
}
.event-links-detail li::before {
  content: "→ ";
  color: #bbb;
}
.event-notes {
  border-top: 1px solid #eee;
  padding-top: 1rem;
  font-size: 0.9rem;
  color: #444;
}

/* ─── Empty month TODO banner ───────────────── */
.todo-banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding: 3rem 1rem;
  background: repeating-linear-gradient(
    -45deg,
    #fff9e6,
    #fff9e6 16px,
    #ffee99 16px,
    #ffee99 32px
  );
  border: 4px solid #e6b800;
  border-radius: 4px;
  text-align: center;
}
.todo-label {
  font-size: 6rem;
  font-weight: 900;
  color: #b38600;
  letter-spacing: 0.2em;
  line-height: 1;
  text-shadow: 2px 2px 0 #fff3cc, 4px 4px 0 #e6b80044;
}
.todo-sub {
  font-size: 1rem;
  color: #8a6600;
  font-style: italic;
}

/* ─── LinkedIn share link ───────────────────── */
.linkedin-share {
  text-align: center;
  margin: 0.75rem 0 1.25rem 0;
}
.linkedin-share a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  background: #0A66C2;
  color: #fff;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}
.linkedin-share a:hover {
  background: #004182;
}
.linkedin-share svg {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

/* ─── Past months list (bottom of /meetups/) ─── */
.past-months {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #eee;
}
.past-months h2 {
  font-size: 1rem;
  color: #888;
  font-weight: 600;
  margin: 0 0 0.75rem 0;
}
.month-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
}
.month-list li {
  font-size: 0.9rem;
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.month-list a { text-decoration: none; }
.month-list a:hover { text-decoration: underline; }

/* ─── Footer ─────────────────────────────────── */
footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
  font-size: 0.8rem;
  color: #aaa;
}

/* ─── Mobile: single-column list ────────────── */
@media (max-width: 640px) {
  .calendar-day-headers { display: none; }

  .calendar-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  /* Hide empty cells (days with no events) on mobile */
  .calendar-cell.empty,
  .calendar-cell.no-events { display: none; }

  .calendar-cell {
    min-height: unset;
    border: none;
    border-bottom: 1px solid #f0f0f0;
    padding: 0.6rem 0;
  }
  .day-number {
    font-size: 0.85rem;
    color: #777;
    margin-bottom: 0.2rem;
  }
  .event-item a { font-size: 0.9rem; }
  .event-time { font-size: 0.75rem; }
  .event-links a, .event-links li { font-size: 0.8rem; }
}