/* =========================================================
   Run Run Run — half-marathon training tracker
   Design system: editorial sport, monochrome + signal accent
   ========================================================= */

:root {
  --bg: #0e0f10;
  --bg-soft: #16181a;
  --bg-elev: #1c1e22;
  --bg-elev-2: #23262b;
  --line: #2a2d33;
  --line-soft: #1f2227;
  --text: #f5f5f5;
  --text-dim: #a8acb3;
  --text-mute: #6b6f76;

  --accent: #d6ff3c;       /* signal lime */
  --accent-ink: #0e0f10;
  --done: #54d97a;
  --warn: #ffb547;
  --danger: #ff5d5d;

  /* Category colors */
  --c-easy: #54d97a;
  --c-long: #4ec9ff;
  --c-quality: #ff9a3c;
  --c-strength: #b794ff;
  --c-swim: #38d6e6;
  --c-rest: #6b6f76;
  --c-race: #d6ff3c;
  --c-skip: #6b6f76;

  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;

  --drawer-w: 252px;
  --drawer-w-collapsed: 64px;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue",
          "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}
html { overscroll-behavior-x: none; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overscroll-behavior-x: none;
  min-height: 100vh;
  min-height: 100dvh;
}
button { font-family: inherit; }

/* ---------- Layout ---------- */
.app {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
}

/* ---------- Drawer ---------- */
.drawer {
  width: var(--drawer-w);
  background: var(--bg-soft);
  border-right: 1px solid var(--line);
  position: fixed;
  top: 0; bottom: 0; left: 0;
  display: flex;
  flex-direction: column;
  z-index: 30;
  transition: transform .28s cubic-bezier(.4,.0,.2,1),
              width .24s cubic-bezier(.4,.0,.2,1);
  overflow: hidden;
}

/* Desktop collapsed drawer (icon-only rail) */
.drawer.collapsed { width: var(--drawer-w-collapsed); }
.drawer.collapsed .drawer-brand {
  padding: 18px 0;
  justify-content: center;
  border-bottom: 1px solid var(--line-soft);
}
.drawer.collapsed .brand-text,
.drawer.collapsed .drawer-section,
.drawer.collapsed .nav-item span:not(.nav-icon),
.drawer.collapsed .nav-item .nav-badge,
.drawer.collapsed .drawer-footer-text { display: none; }
.drawer.collapsed .nav-item {
  justify-content: center;
  margin: 2px 8px;
  padding: 10px 0;
  width: calc(100% - 16px);
}
.drawer.collapsed .drawer-footer {
  padding: 16px 0;
  display: flex;
  justify-content: center;
}

/* Brand icon becomes the toggle */
.brand-mark.brand-mark-btn {
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  transition: box-shadow .15s, transform .15s;
  padding: 0;
}
.brand-mark.brand-mark-btn:hover {
  box-shadow: 0 0 0 3px rgba(214,255,60,.25);
}
.brand-mark.brand-mark-btn:active { transform: scale(.94); }
.drawer.collapsed .brand-mark.brand-mark-btn:hover {
  box-shadow: 0 0 0 3px rgba(214,255,60,.35), 0 0 18px rgba(214,255,60,.25);
}
.drawer-brand {
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -.5px;
  font-family: var(--font-mono);
}
.brand-text { line-height: 1.2; }
.brand-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .5px;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-mute);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.drawer-section {
  padding: 16px 14px 4px;
  font-size: 10px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-mute);
  font-weight: 700;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  margin: 2px 10px;
  border-radius: 10px;
  color: var(--text-dim);
  cursor: pointer;
  transition: all .15s;
  border: none;
  background: transparent;
  width: calc(100% - 20px);
  text-align: left;
  font-size: 14px;
  font-weight: 500;
}
.nav-item:hover {
  background: var(--bg-elev);
  color: var(--text);
}
.nav-item.active {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}
.nav-item .nav-icon {
  width: 20px; height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.nav-item .nav-badge {
  margin-left: auto;
  font-size: 11px;
  font-family: var(--font-mono);
  background: rgba(255,255,255,.08);
  padding: 2px 8px;
  border-radius: 6px;
  color: var(--text-dim);
}
.nav-item.active .nav-badge {
  background: rgba(0,0,0,.18);
  color: var(--accent-ink);
}

.drawer-footer {
  margin-top: auto;
  padding: 16px 22px;
  border-top: 1px solid var(--line-soft);
  font-size: 11px;
  color: var(--text-mute);
  font-family: var(--font-mono);
  letter-spacing: .4px;
}
.drawer-footer .race-line {
  color: var(--text);
  font-weight: 600;
  margin-bottom: 4px;
  font-family: var(--font);
}
.drawer-footer-mark {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

/* ---------- Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(14,15,16,.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line-soft);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.topbar-burger {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  width: 38px; height: 38px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.topbar-title { font-size: 18px; font-weight: 700; letter-spacing: -.2px; }
.topbar-sub {
  color: var(--text-mute);
  font-size: 13px;
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}
.topbar-spacer { flex: 1; }
.topbar-pill {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
  letter-spacing: .5px;
}
.topbar-pill b { color: var(--accent); font-weight: 700; }

/* ---------- Main ---------- */
.main {
  flex: 1;
  margin-left: var(--drawer-w);
  min-width: 0;
  min-height: 100vh;
  background: var(--bg);
  transition: margin-left .24s cubic-bezier(.4,.0,.2,1);
}
.main.drawer-collapsed { margin-left: var(--drawer-w-collapsed); }
@media (max-width: 880px) {
  .main.drawer-collapsed { margin-left: 0; }
}
.page {
  padding: 28px 28px 60px;
  max-width: 1240px;
  margin: 0 auto;
}
.page-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -.6px;
  margin: 0 0 4px;
}
.page-sub {
  color: var(--text-mute);
  font-size: 13.5px;
  margin-bottom: 28px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 22px;
}
.card-tight { padding: 18px; }
.card-flat {
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
}
.card h3.card-title {
  font-size: 12px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-mute);
  font-weight: 700;
  margin: 0 0 14px;
}

/* ---------- Stat tiles ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
.stat {
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  position: relative;
  overflow: hidden;
}
.stat .lab {
  font-size: 10.5px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-mute);
  font-weight: 700;
}
.stat .val {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -1px;
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  margin-top: 4px;
}
.stat .val .unit {
  font-size: 14px;
  color: var(--text-mute);
  font-weight: 600;
  margin-left: 4px;
  letter-spacing: 0;
}
.stat .sub {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 2px;
}
.stat.accent {
  background: linear-gradient(135deg, var(--accent) 0%, #b8e02a 100%);
  color: var(--accent-ink);
  border-color: transparent;
}
.stat.accent .lab,
.stat.accent .sub { color: var(--accent-ink); opacity: .72; }
.stat.accent .lab { opacity: .82; }

/* ---------- Hero / countdown ---------- */
.hero {
  background:
    radial-gradient(800px 400px at 110% -10%, rgba(214,255,60,.13), transparent 60%),
    radial-gradient(600px 320px at -10% 120%, rgba(78,201,255,.10), transparent 60%),
    var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 32px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(214,255,60,.3), transparent);
}
.hero-eyebrow {
  font-size: 10.5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 8px;
}
.hero-title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -.6px;
  line-height: 1.15;
  margin-bottom: 8px;
}
.hero-detail {
  color: var(--text-dim);
  font-size: 14px;
}
.hero-detail b { color: var(--text); font-weight: 600; }
.hero-cta {
  margin-top: 16px;
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  letter-spacing: .3px;
}
.hero-cta:hover { background: #c8f02a; }

.countdown-block {
  text-align: right;
  font-family: var(--font-mono);
  border-left: 1px solid var(--line);
  padding-left: 28px;
}
.countdown-num {
  font-size: 72px;
  font-weight: 900;
  letter-spacing: -3px;
  line-height: 1;
  background: linear-gradient(180deg, #fff 0%, #888 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.countdown-lab {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-top: 4px;
  font-family: var(--font);
  font-weight: 700;
}
.countdown-date {
  color: var(--text-dim);
  font-size: 12px;
  margin-top: 10px;
}

/* ---------- Heatmap ---------- */
.heatmap-card { padding: 22px 24px; }
.heatmap-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.heatmap-head h3 {
  font-size: 14px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -.2px;
}
.heatmap-head .legend {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-mute);
  font-family: var(--font-mono);
}
.heatmap-head .legend .scale {
  display: flex;
  gap: 3px;
}
.heatmap-head .legend .scale span {
  width: 12px; height: 12px;
  border-radius: 3px;
  background: var(--bg-elev-2);
}
.heatmap-grid {
  display: grid;
  grid-template-columns: 22px repeat(21, 1fr);
  gap: 4px;
  align-items: center;
}
.heatmap-grid .day-label {
  font-size: 10px;
  color: var(--text-mute);
  text-align: right;
  padding-right: 4px;
  font-family: var(--font-mono);
}
.heatmap-grid .week-col {
  display: grid;
  grid-template-rows: repeat(7, 1fr);
  gap: 4px;
}
.heatmap-cell {
  aspect-ratio: 1 / 1;
  border-radius: 3px;
  background: var(--bg-elev-2);
  position: relative;
  cursor: default;
  transition: transform .1s;
}
.heatmap-cell:hover { transform: scale(1.4); z-index: 5; }
.heatmap-cell.future { background: #1a1c1f; }
.heatmap-cell.today {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.heatmap-cell.race {
  background: var(--accent) !important;
  outline: 2px solid #fff;
  outline-offset: 1px;
}
.heatmap-week-axis {
  display: grid;
  grid-template-columns: 22px repeat(21, 1fr);
  gap: 4px;
  margin-top: 8px;
  font-size: 9.5px;
  color: var(--text-mute);
  font-family: var(--font-mono);
  text-align: center;
}
.heatmap-week-axis div:first-child { visibility: hidden; }
.heatmap-cell-tip {
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: #fff;
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 11px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s;
  z-index: 10;
  font-family: var(--font);
}
.heatmap-cell:hover .heatmap-cell-tip { opacity: 1; }

/* ---------- Two-column dashboard ---------- */
.dash-cols {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 18px;
  margin-bottom: 18px;
}
@media (max-width: 980px) { .dash-cols { grid-template-columns: 1fr; } }

/* ---------- Phase progress ---------- */
.phase-bar {
  display: grid;
  grid-template-columns: 4fr 4fr 9fr 3fr 1.4fr;
  gap: 6px;
  margin: 14px 0 8px;
}
.phase-cell {
  height: 56px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 0 12px;
  background: var(--bg-elev-2);
  border: 1px solid var(--line-soft);
}
.phase-cell .phase-cell-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--phase-tint, rgba(255,255,255,.08));
  border-right: 1.5px solid var(--phase-color, var(--accent));
  transition: width .5s cubic-bezier(.4,0,.2,1);
}
.phase-cell .phase-cell-fill.full { border-right: none; }
.phase-cell.current { border-color: var(--phase-color); box-shadow: 0 0 0 1px var(--phase-color); }
.phase-cell .phase-label {
  position: relative;
  z-index: 2;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .8px;
  color: var(--phase-color, var(--text));
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.phase-cell .phase-num {
  position: relative;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  margin-top: 2px;
  white-space: nowrap;
}
.phase-cell .phase-num .pdim { color: var(--text-mute); font-weight: 500; }
.phase-cell.race {
  background: var(--accent);
  border-color: var(--accent);
}
.phase-cell.race .phase-label,
.phase-cell.race .phase-num,
.phase-cell.race .phase-num .pdim { color: var(--accent-ink); }
.phase-axis {
  display: grid;
  grid-template-columns: 4fr 4fr 9fr 3fr 1.4fr;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-mute);
  text-align: center;
  margin-top: 6px;
}
.phase-axis div {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Volume chart ---------- */
.vol-chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 130px;
  margin: 16px 0 4px;
  padding-top: 16px;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}
.vol-bar {
  flex: 1;
  background: var(--bg-elev-2);
  border-radius: 3px 3px 0 0;
  position: relative;
  transition: background .15s;
  min-height: 4px;
}
.vol-bar:hover { background: var(--accent); }
.vol-bar.current { background: var(--accent); }
.vol-bar.done { background: var(--done); }
.vol-bar .vol-tip {
  position: absolute;
  bottom: 105%;
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  font-family: var(--font-mono);
  z-index: 5;
}
.vol-bar:hover .vol-tip { opacity: 1; }
.vol-axis {
  display: flex;
  gap: 3px;
  font-size: 9px;
  color: var(--text-mute);
  font-family: var(--font-mono);
  margin-top: 6px;
}
.vol-axis .vol-label { flex: 1; text-align: center; }

/* ---------- Activity feed ---------- */
.feed { display: flex; flex-direction: column; gap: 10px; }
.feed-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 10px;
}
.feed-item .feed-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-mute);
  width: 50px;
  flex-shrink: 0;
}
.feed-item .feed-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.feed-item .feed-body { flex: 1; min-width: 0; }
.feed-item .feed-title { font-size: 14px; font-weight: 600; }
.feed-item .feed-detail { font-size: 12px; color: var(--text-mute); margin-top: 2px; }
.feed-item .feed-km {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}
.feed-item.done {
  border-color: rgba(214,255,60,.25);
  background: linear-gradient(90deg, rgba(214,255,60,.04), var(--bg-soft));
}
.feed-item.done .feed-title {
  text-decoration: line-through;
  color: var(--text-mute);
}

/* ---------- Plan tab ---------- */
.weeks-list { display: flex; flex-direction: column; gap: 10px; }
.week-card {
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.week-card.current {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 0 30px rgba(214,255,60,.08);
}
.week-head {
  display: grid;
  grid-template-columns: 60px 1fr auto auto auto;
  gap: 16px;
  align-items: center;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
}
.week-head:hover { background: var(--bg-elev-2); }
.week-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -.5px;
  color: var(--text);
}
.week-info-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 2px;
}
.week-info-dates {
  font-size: 11.5px;
  color: var(--text-mute);
  font-family: var(--font-mono);
}
.phase-pill {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 5px;
  text-transform: uppercase;
}
.phase-pill.base { background: rgba(78,201,255,.15); color: #4ec9ff; }
.phase-pill.build { background: rgba(84,217,122,.15); color: #54d97a; }
.phase-pill.specific { background: rgba(255,154,60,.15); color: #ff9a3c; }
.phase-pill.taper { background: rgba(183,148,255,.15); color: #b794ff; }
.phase-pill.race { background: var(--accent); color: var(--accent-ink); }

.week-km {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  text-align: right;
  min-width: 84px;
}
.week-km .actual { color: var(--accent); }
.week-km .target { color: var(--text-mute); font-size: 11px; }
.week-km .delim { color: var(--text-mute); margin: 0 2px; }

.week-prog-circle {
  width: 36px; height: 36px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}
.week-prog-circle svg {
  position: absolute; inset: 0;
  transform: rotate(-90deg);
}
.week-prog-circle .ring-bg { stroke: var(--line); }
.week-prog-circle .ring-fg { stroke: var(--accent); transition: stroke-dashoffset .4s; }
.week-prog-circle.done .ring-fg { stroke: var(--done); }

.caret {
  color: var(--text-mute);
  transition: transform .2s;
  font-size: 12px;
}
.week-card.expanded .caret { transform: rotate(180deg); }

.week-body {
  padding: 4px 20px 20px;
  border-top: 1px solid var(--line-soft);
  background: var(--bg-soft);
}
.week-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  padding: 12px 0 14px;
  font-size: 12px;
  color: var(--text-mute);
}
.week-meta b { color: var(--text-dim); font-family: var(--font-mono); }

.day-list { display: flex; flex-direction: column; gap: 8px; }
.day-card {
  display: grid;
  grid-template-columns: 22px 60px 38px 1fr auto auto;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cat);
  border-radius: 10px;
  transition: all .15s;
}
.day-card:hover {
  border-color: var(--line);
  background: var(--bg-elev-2);
}
.day-card.done {
  background: linear-gradient(90deg, rgba(214,255,60,.05), rgba(214,255,60,.0) 60%);
  border-left-color: var(--accent);
}
.day-card.today {
  border-color: var(--accent);
  border-left-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.day-card.past:not(.done):not(.today) { opacity: .58; }

/* Refined checkbox — squircle, accent fill, dark check */
.check {
  width: 24px; height: 24px;
  border-radius: 7px;
  border: 1.5px solid var(--line);
  background: var(--bg-soft);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all .15s ease;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.check::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 10px;
  background: var(--accent);
  opacity: 0;
  filter: blur(8px);
  transition: opacity .2s;
  z-index: -1;
}
.check:hover {
  border-color: var(--accent);
  background: var(--bg-elev-2);
}
.check:hover::before { opacity: .25; }
.check.checked {
  background: var(--accent);
  border-color: var(--accent);
}
.check.checked::after {
  content: "";
  width: 7px; height: 12px;
  border: solid var(--accent-ink);
  border-width: 0 2.5px 2.5px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}
.check:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.dow-block .dow {
  font-size: 13px;
  font-weight: 700;
}
.dow-block .dow-date {
  font-size: 11px;
  color: var(--text-mute);
  font-family: var(--font-mono);
  margin-top: 1px;
}

.day-icon {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.day-card.done .day-icon { background: rgba(214,255,60,.12); }

.day-content { min-width: 0; }
.day-title {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.day-card.done .day-title-text {
  text-decoration: line-through;
  color: var(--text-mute);
}
.cat-tag {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: .5px;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  background: rgba(255,255,255,.08);
  color: var(--cat);
}
.day-detail {
  font-size: 12px;
  color: var(--text-mute);
  margin-top: 3px;
}

.day-km-input {
  width: 70px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 600;
  text-align: right;
  outline: none;
  transition: border-color .15s;
}
.day-km-input:focus { border-color: var(--accent); }
.day-km-input.has-value { color: var(--accent); }
.day-km-suffix {
  font-size: 11px;
  color: var(--text-mute);
  font-family: var(--font-mono);
  margin-left: 4px;
}
.day-km-wrap { display: flex; align-items: center; }

.today-badge {
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .5px;
  padding: 2px 8px;
  border-radius: 4px;
}

/* Filter chips */
.chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.chip {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  color: var(--text-dim);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: .3px;
}
.chip.active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}
.chip:hover:not(.active) { border-color: var(--text-mute); color: var(--text); }

/* ---------- Explanation tab ---------- */
.exp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 16px;
}
.exp-card {
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 22px 24px;
  border-top: 4px solid var(--cat);
  position: relative;
}
.exp-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.exp-icon {
  width: 44px; height: 44px;
  border-radius: 11px;
  background: rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
.exp-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.3px;
  color: var(--cat);
}
.exp-tagline {
  font-size: 13px;
  color: var(--text);
  margin-bottom: 14px;
}
.exp-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 8px 14px;
  font-size: 13px;
  padding: 6px 0;
  border-top: 1px solid var(--line-soft);
}
.exp-row:first-of-type { border-top: none; padding-top: 8px; }
.exp-row .key {
  color: var(--text-mute);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: .8px;
  text-transform: uppercase;
  padding-top: 1px;
}
.exp-row .val { color: var(--text-dim); line-height: 1.5; }
.exp-row .val b { color: var(--text); font-weight: 700; }
.exp-warn {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(255,93,93,.08);
  border: 1px solid rgba(255,93,93,.18);
  border-radius: 9px;
  font-size: 12.5px;
  color: #ffb1b1;
}

/* ---------- Zones table ---------- */
.zone-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.zone-table th, .zone-table td {
  padding: 14px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}
.zone-table th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-mute);
  font-weight: 700;
  background: var(--bg-soft);
}
.zone-table td {
  color: var(--text-dim);
}
.zone-table tr:last-child td { border-bottom: none; }
.zone-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--text);
}
.zone-dot { width: 10px; height: 10px; border-radius: 3px; }
.zone-table .pace, .zone-table .hr {
  font-family: var(--font-mono);
  color: var(--text);
}

/* ---------- Race day ---------- */
.race-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 36px;
}
.race-timeline::before {
  content: "";
  position: absolute;
  left: 14px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--line);
}
.race-step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
  padding: 14px 0;
  position: relative;
}
.race-step::before {
  content: "";
  position: absolute;
  left: -28px; top: 22px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2.5px solid var(--accent);
}
.race-step.finish::before { background: var(--accent); }
.race-step .km {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -.5px;
}
.race-step .km .pace {
  font-size: 11px;
  color: var(--text-mute);
  display: block;
  margin-top: 2px;
  font-weight: 600;
}
.race-step .what {
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 4px;
}
.race-step .why {
  font-size: 12.5px;
  color: var(--text-mute);
}

/* ---------- Principles ---------- */
.principle {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}
.principle:last-child { border-bottom: none; }
.principle-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  color: var(--accent);
}
.principle-text { font-size: 14px; line-height: 1.6; color: var(--text-dim); }
.principle-text b { color: var(--text); font-weight: 700; }

/* ---------- Settings ---------- */
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}
.settings-row:last-child { border-bottom: none; }
.settings-label { font-weight: 600; }
.settings-desc { font-size: 12px; color: var(--text-mute); margin-top: 2px; }
.btn {
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--bg-elev); border-color: var(--text-mute); }
.btn.danger { color: var(--danger); border-color: rgba(255,93,93,.3); }
.btn.danger:hover { background: rgba(255,93,93,.08); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { background: #c8f02a; }

/* ---------- Mobile ---------- */
.scrim {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 25;
}

@media (max-width: 880px) {
  .topbar-burger { display: flex; }
  .drawer { transform: translateX(-100%); box-shadow: 8px 0 32px rgba(0,0,0,.4); }
  .drawer.open { transform: translateX(0); }
  .scrim.open { display: block; }
  .main { margin-left: 0; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { grid-template-columns: 1fr; padding: 24px; }
  .hero .countdown-block {
    border-left: none;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 22px;
    text-align: left;
  }
  .countdown-num { font-size: 60px; }
  .page { padding: 20px 18px 60px; }
  .topbar { padding: 12px 18px; }
  .topbar-sub { display: none; }
  .heatmap-grid { grid-template-columns: 18px repeat(21, 1fr); gap: 2px; }
  .heatmap-week-axis { grid-template-columns: 18px repeat(21, 1fr); gap: 2px; }
  .week-head { grid-template-columns: 50px 1fr auto auto; gap: 10px; padding: 14px; }
  .week-head .phase-pill { display: none; }
  .day-card { grid-template-columns: 22px 50px 32px 1fr; gap: 10px; padding: 10px 12px; }
  .day-card .day-km-wrap { grid-column: 1 / -1; justify-content: flex-end; padding-top: 2px; }
  .race-step { grid-template-columns: 70px 1fr; gap: 12px; }
  .page-title { font-size: 22px; }
}

@media (max-width: 540px) {
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat .val { font-size: 26px; }
}

/* ---------- Phase progress: mobile ---------- */
@media (max-width: 880px) {
  .phase-bar {
    grid-template-columns: 1fr 1fr 1.6fr 1fr 1fr;
    gap: 4px;
    margin: 12px 0 6px;
  }
  .phase-cell {
    height: auto;
    min-height: 60px;
    padding: 8px 6px;
    align-items: flex-start;
  }
  .phase-cell .phase-label {
    font-size: 9.5px;
    letter-spacing: .2px;
    white-space: normal;
    line-height: 1.25;
    overflow: visible;
    text-overflow: clip;
  }
  .phase-cell .phase-num {
    font-size: 10px;
    margin-top: 4px;
    white-space: normal;
    line-height: 1.3;
  }
  .phase-axis {
    grid-template-columns: 1fr 1fr 1.6fr 1fr 1fr;
    gap: 4px;
    font-size: 9.5px;
  }
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg-elev-2); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--line); }