:root {
  --bg: #f3f5f9;
  --card: #ffffff;
  --ink: #16212e;
  --muted: #69788a;
  --line: #e3e8ef;
  --accent: #2f6fed;
  --up-bg: #e5f6ec;   --up-ink: #177245;
  --down-bg: #fdebea; --down-ink: #b3261e;
  --flat-bg: #eef1f5; --flat-ink: #69788a;
  --shadow: 0 1px 2px rgba(16, 33, 46, 0.05), 0 4px 12px rgba(16, 33, 46, 0.05);
}

* { box-sizing: border-box; }

/* The hidden attribute must always win, even over display:flex rules. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 18px 28px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

h1 { margin: 0; font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }

header { justify-content: space-between; }
.header-right { display: flex; align-items: center; gap: 10px; font-size: 14px; }

.linklike {
  border: none;
  background: none;
  color: var(--accent);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 0;
}
.linklike:hover { text-decoration: underline; }

/* --- sign-in screen ----------------------------------------------------- */

.signin-overlay {
  display: flex;
  justify-content: center;
  padding: 64px 20px;
}
.signin-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 380px;
  text-align: center;
}
.signin-title { margin: 0 0 6px; font-size: 20px; }
.signin-card #googleBtn { display: flex; justify-content: center; margin-top: 18px; }
.signin-card hr { border: none; border-top: 1px solid var(--line); margin: 20px 0 10px; }
.dev-row { display: flex; gap: 8px; }
.dev-row input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
}
.dev-row button {
  padding: 8px 14px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

#viewingBar { display: flex; align-items: baseline; gap: 12px; }

.badge-role { background: #eef1f5; color: #4a5868; text-transform: capitalize; }

main {
  max-width: 960px;
  margin: 28px auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* --- cards ----------------------------------------------------------- */

.card, .hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.card h2, .hero-head h2 {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 650;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- this-week hero --------------------------------------------------- */

.hero-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.hero-head h2 { margin-bottom: 14px; }

.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 640px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
}
.stat-card .label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.stat-card .value {
  margin-top: 6px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.delta {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.delta.up   { background: var(--up-bg);   color: var(--up-ink); }
.delta.down { background: var(--down-bg); color: var(--down-ink); }
.delta.flat { background: var(--flat-bg); color: var(--flat-ink); }
.delta:empty { display: none; }

/* --- tables ------------------------------------------------------------ */

table { width: 100%; border-collapse: collapse; font-size: 14px; }

th, td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
}

th {
  font-weight: 600;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f7f9fc; }
tbody tr.clickable { cursor: pointer; }

.num { text-align: right; font-variant-numeric: tabular-nums; }

.muted { color: var(--muted); }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-recorded { background: #e6f0ff; color: #1b4fb8; }
.badge-detected { background: #fff0e6; color: #b85a1b; }

/* --- detail pages (workout.html / session.html) ------------------------ */

.back {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
.back:hover { text-decoration: underline; }

.detail-title { font-size: 22px; margin: 0 0 2px; letter-spacing: -0.01em; }
.detail-sub { color: var(--muted); margin: 0 0 18px; font-size: 14px; }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}
.stat {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
}
.stat .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.stat .value {
  font-size: 18px;
  font-weight: 650;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

/* --- route map (session.html) ------------------------------------------ */

.dash-error {
  margin: 0;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--down-bg);
  color: var(--down-ink);
  font-size: 14px;
  font-weight: 600;
}

.map-wrap { position: relative; }
#routeMap {
  height: 360px;
  border-radius: 10px;
  border: 1px solid var(--line);
}
/* Square icon button; sits above Leaflet tiles/controls (panes ~400, ctrls ~1000). */
.map-btn {
  position: absolute;
  bottom: 10px;
  right: 10px;
  z-index: 1000;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  box-shadow: var(--shadow);
}
.map-btn:hover { background: var(--bg); }
#routeMeta { margin: 12px 0 0; font-size: 13px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 13px;
}