:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-2: #eef1f4;
  --text: #13202c;
  --muted: #64748b;
  --line: #dde3ea;
  --accent: #ff5a1f;
  --today: #ff5a1f;

  --k-easy: #22a06b;
  --k-long: #2f6fed;
  --k-tempo: #e5a00d;
  --k-interval: #e2483d;
  --k-recovery: #6cc4a1;
  --k-race: #ff5a1f;
  --k-rest: #a0aab5;
  --k-cross: #8b5cf6;
  --k-strength: #b4627a;

  --radius: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1720;
    --surface: #17212c;
    --surface-2: #1f2b38;
    --text: #e7edf3;
    --muted: #8a9aab;
    --line: #2a3846;
    --k-rest: #5b6876;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
  -webkit-text-size-adjust: 100%;
}

button { font: inherit; color: inherit; cursor: pointer; }

/* ---------- header ---------- */
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 8px; }
.brand h1 { font-size: 1.25rem; margin: 0; letter-spacing: -0.02em; }
.logo { color: var(--accent); font-size: 1.1rem; }

.view-toggle {
  display: flex;
  background: var(--surface-2);
  border-radius: 999px;
  padding: 3px;
}
.view-toggle button {
  border: 0;
  background: none;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--muted);
}
.view-toggle button[aria-selected="true"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 3px rgb(0 0 0 / 0.12);
}

/* ---------- race banner ---------- */
.race-banner {
  max-width: 1100px;
  margin: 0 auto 8px;
  padding: 0 16px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}
.race-card {
  flex: 0 0 auto;
  min-width: 220px;
  background: linear-gradient(135deg, var(--accent), #ff8a3d);
  color: #fff;
  border: 0;
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
}
.race-card.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--line); }
.race-card .count { font-size: 2rem; font-weight: 800; line-height: 1; font-variant-numeric: tabular-nums; }
.race-card .count small { display: block; font-size: 0.7rem; font-weight: 600; opacity: 0.8; text-transform: uppercase; letter-spacing: 0.05em; }
.race-card .info strong { display: block; }
.race-card .info span { font-size: 0.8rem; opacity: 0.9; }

/* ---------- month nav ---------- */
main { max-width: 1100px; margin: 0 auto; padding: 0 16px 32px; }

.month-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 8px 0 10px;
}
.month-nav h2 { margin: 0 auto 0 4px; font-size: 1.15rem; order: -1; flex: 1; }
.icon-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 1.3rem;
  line-height: 1;
}
.today-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
}

/* ---------- month grid ---------- */
.weekdays, .grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr)) 72px;
  gap: 4px;
}
.weekdays span {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  padding-bottom: 4px;
}

.day {
  position: relative;
  min-height: 108px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}
.day.outside { opacity: 0.45; }
.day.selected { outline: 2px solid var(--text); outline-offset: -1px; }
.day.race-day { border-color: var(--k-race); box-shadow: inset 0 0 0 1px var(--k-race); }
.day .num { font-size: 0.8rem; font-weight: 600; color: var(--muted); }
.day.today .num {
  background: var(--today);
  color: #fff;
  border-radius: 999px;
  width: 22px; height: 22px;
  display: inline-grid;
  place-items: center;
}

.chip {
  display: block;
  font-size: 0.72rem;
  line-height: 1.25;
  padding: 3px 6px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--k) 16%, transparent);
  border-left: 3px solid var(--k);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chip.done { opacity: 0.6; text-decoration: line-through; }
.chip b { font-weight: 700; }

.dots { display: none; gap: 3px; flex-wrap: wrap; margin-top: auto; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--k); }

.week-total {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--surface-2);
  border-radius: 10px;
  font-variant-numeric: tabular-nums;
}
.week-total strong { color: var(--text); font-size: 0.95rem; }

/* ---------- day detail ---------- */
.day-detail { margin-top: 14px; }
.day-detail:empty { display: none; }
.detail-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.detail-head h3 { margin: 0; font-size: 1rem; }

.workout {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--k);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
}
.workout .row { display: flex; align-items: center; gap: 8px; justify-content: space-between; }
.workout h4 { margin: 0; font-size: 0.98rem; }
.tag {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--k);
  white-space: nowrap;
}
.metrics { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 6px; font-size: 0.85rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.metrics span strong { color: var(--text); }
.notes { margin: 8px 0 0; font-size: 0.875rem; white-space: pre-wrap; line-height: 1.45; }
.done-badge { font-size: 0.75rem; color: var(--k-easy); font-weight: 600; }
.empty { color: var(--muted); font-size: 0.9rem; padding: 12px 0; }

/* ---------- list view ---------- */
.week-block { margin-bottom: 18px; }
.week-head {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 0.8rem; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.05em;
  padding: 4px 2px 6px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.week-head strong { color: var(--text); }
.list-day { display: grid; grid-template-columns: 52px 1fr; gap: 10px; margin-bottom: 6px; }
.list-date { text-align: center; padding-top: 10px; }
.list-date .dow { display: block; font-size: 0.68rem; text-transform: uppercase; color: var(--muted); }
.list-date .dnum { font-size: 1.25rem; font-weight: 700; }
.list-day.is-today .dnum { color: var(--today); }

/* ---------- legend / status ---------- */
.legend { list-style: none; padding: 0; margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 0.78rem; color: var(--muted); }
.legend li { display: flex; align-items: center; gap: 5px; }
.status { text-align: center; color: var(--muted); font-size: 0.75rem; margin: 0 0 16px; }

/* kind colors */
[data-kind="easy"] { --k: var(--k-easy); }
[data-kind="long"] { --k: var(--k-long); }
[data-kind="tempo"] { --k: var(--k-tempo); }
[data-kind="interval"] { --k: var(--k-interval); }
[data-kind="recovery"] { --k: var(--k-recovery); }
[data-kind="race"] { --k: var(--k-race); }
[data-kind="rest"] { --k: var(--k-rest); }
[data-kind="cross"] { --k: var(--k-cross); }
[data-kind="strength"] { --k: var(--k-strength); }

/* ---------- mobile ---------- */
@media (max-width: 720px) {
  .weekdays, .grid { grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 3px; }
  .weekdays .wk, .week-total { display: none; }
  .day {
    min-height: 54px;
    padding: 5px 4px;
    align-items: center;
    border-radius: 8px;
  }
  .day .chip { display: none; }
  .day .dots { display: flex; justify-content: center; }
  .day .km { font-size: 0.65rem; color: var(--muted); font-variant-numeric: tabular-nums; }
  .weekdays span { font-size: 0.65rem; }
}
@media (min-width: 721px) {
  .day .km { display: none; }
}