:root {
  --bg: #0d0f14;
  --card: #151922;
  --card-2: #1b2029;
  --line: #262c38;
  --text: #e6e9ef;
  --muted: #8b93a3;
  --orange: #ff8c00;
  --green: #35c26b;
  --blue: #5aa0ff;
  --red: #e0514f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
a { color: inherit; text-decoration: none; }

/* top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 28px; border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #12151d, #0d0f14);
  position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 800; letter-spacing: 2px; font-size: 18px; }
.brand .mark { color: var(--orange); margin-right: 4px; }
.brand .by { color: var(--muted); font-weight: 500; letter-spacing: 1px; font-size: 12px; margin-left: 8px; }
.navlinks { display: flex; align-items: center; gap: 18px; }
.navlink { color: var(--muted); font-size: 14px; font-weight: 600; }
.navlink:hover { color: var(--text); }
.inline { display: inline; margin: 0; }
.btn {
  background: var(--card-2); color: var(--text); border: 1px solid var(--line);
  padding: 8px 14px; border-radius: 8px; font-size: 13px; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.btn:hover { border-color: var(--orange); background: #222834; }

main { max-width: 1000px; margin: 0 auto; padding: 28px 20px 60px; }

/* PR cards */
.pr-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.pr-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 18px 18px 16px; display: flex; flex-direction: column; gap: 6px;
}
.pr-card.hero {
  background: linear-gradient(150deg, #241a06, #151922 60%);
  border-color: #5a3d0a;
}
.pr-label { font-size: 11px; letter-spacing: 1.5px; color: var(--muted); }
.pr-value { font-size: 34px; font-weight: 800; line-height: 1; }
.pr-card.hero .pr-value { color: var(--orange); font-size: 40px; }
.pr-value .unit { font-size: 15px; font-weight: 600; color: var(--muted); margin-left: 4px; }
.pr-sub { font-size: 12px; color: var(--muted); }

/* cards */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 20px 22px; margin-bottom: 20px;
}
.card h2 { margin: 0 0 14px; font-size: 15px; letter-spacing: .5px; font-weight: 700; }
.card h2 .count { color: var(--muted); font-weight: 500; margin-left: 6px; }
.chart { width: 100%; overflow-x: auto; }
.chart svg { max-width: 100%; height: auto; }
.muted { color: var(--muted); }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
.sessions th, .laps th {
  text-align: left; color: var(--muted); font-weight: 600; font-size: 12px;
  letter-spacing: .5px; padding: 8px 10px; border-bottom: 1px solid var(--line);
}
.sessions td, .laps td { padding: 10px; border-bottom: 1px solid #1d222c; }
.sessions tr { cursor: pointer; transition: background .12s; }
.sessions tbody tr:hover { background: var(--card-2); }
.r { text-align: right; }
.strong { font-weight: 700; }
.sess { font-weight: 600; }
.dev { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 8px; }
.sessions.dim td { color: var(--muted); }
.count, details summary { cursor: pointer; }
details summary { color: var(--muted); padding: 4px 0; }

.src-note { color: var(--muted); font-size: 12px; text-align: center; }
.src-note code { background: var(--card); padding: 2px 6px; border-radius: 5px; }
.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; border-top: 1px solid var(--line); }

/* delete controls */
.del { width: 34px; text-align: center; }
.del-btn {
  background: transparent; border: none; color: #5b6270; cursor: pointer;
  font-size: 14px; padding: 4px 8px; border-radius: 6px; line-height: 1;
  transition: color .12s, background .12s;
}
.del-btn:hover { color: #fff; background: var(--red); }
.btn.danger { border-color: #5a2020; color: #e08b8b; }
.btn.danger:hover { border-color: var(--red); background: #2a1414; color: #fff; }

/* session detail */
.back { color: var(--muted); font-size: 13px; }
.sess-head { margin: 14px 0 18px; display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.sess-head h1 { margin: 0 0 4px; font-size: 26px; }
.sess-meta { color: var(--muted); font-size: 13px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.stat .v { font-size: 26px; font-weight: 800; }
.stat .v .u { font-size: 14px; color: var(--muted); font-weight: 600; margin-left: 2px; }
.stat .l { font-size: 11px; letter-spacing: 1px; color: var(--muted); margin-top: 2px; }

/* lap rows */
.laps tr.dropped td { color: var(--muted); }
.dir { font-weight: 700; font-size: 12px; padding: 2px 7px; border-radius: 5px; }
.dir0 { color: var(--green); background: rgba(53,194,107,.12); }
.dir1 { color: var(--blue); background: rgba(90,160,255,.12); }
.status .ok { color: var(--green); font-size: 12px; }
.status .muted { font-size: 12px; }

/* staircases */
.page-h1 { font-size: 26px; margin: 6px 0 4px; }
.page-sub { color: var(--muted); font-size: 14px; margin: 0 0 20px; max-width: 640px; }
#map { height: 340px; border-radius: 14px; border: 1px solid var(--line); margin-bottom: 22px; z-index: 0; }
.leaflet-popup-content a { color: var(--orange); }
.stair-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.stair-head h2 { margin: 0 0 4px; }
.stair-meta { color: var(--muted); font-size: 13px; }
.stair-bests { display: flex; gap: 20px; text-align: right; flex-shrink: 0; }
.sb .v { display: block; font-size: 22px; font-weight: 800; color: var(--orange); }
.sb .l { font-size: 10px; letter-spacing: 1px; color: var(--muted); }
table.board { width: 100%; border-collapse: collapse; font-size: 14px; }
.board th { text-align: left; color: var(--muted); font-size: 12px; letter-spacing: .5px;
  padding: 8px 10px; border-bottom: 1px solid var(--line); }
.board td { padding: 9px 10px; border-bottom: 1px solid #1d222c; }
.board tbody tr { cursor: pointer; transition: background .12s; }
.board tbody tr:hover { background: var(--card-2); }
.rank { font-weight: 700; color: var(--muted); width: 34px; }
.rank1 { color: #ffd23f; } .rank2 { color: #cfd6e0; } .rank3 { color: #d98a4f; }
.ath { font-weight: 600; }
.more { font-size: 12px; margin: 10px 0 0; }

@media (max-width: 720px) {
  .pr-row, .stat-grid { grid-template-columns: repeat(2, 1fr); }
  main { padding: 18px 12px 50px; }
  .stair-head { flex-direction: column; }
  .navlinks { gap: 12px; }
}