:root {
  --bg: #0f1115;
  --card: #171a21;
  --border: #2a2e38;
  --text: #e8e9ec;
  --muted: #9aa0ac;
  --accent: #4f8cff;
  --accent2: #34d399;
  --danger: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 40px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

header h1 {
  font-size: 18px;
  margin: 0;
}

nav {
  display: flex;
  gap: 8px;
}

nav a, nav button {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
}

nav a.active, nav a:hover, nav button:hover {
  color: var(--text);
  border-color: var(--accent);
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
}

.date-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.date-nav button#prev-day,
.date-nav button#next-day {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
}

.date-nav button#prev-day:disabled,
.date-nav button#next-day:disabled {
  opacity: 0.35;
  cursor: default;
}

.date-nav-center {
  flex: 1;
  text-align: center;
}

#date-label {
  font-size: 15px;
  font-weight: 600;
}

#today-btn {
  margin-top: 4px;
  border: none;
  background: transparent;
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
  text-decoration: underline;
}

.day-title {
  margin-bottom: 16px;
}

.day-title h2 { margin: 0 0 2px; font-size: 20px; }
.day-title p { margin: 0; color: var(--muted); font-size: 14px; }

.exercise-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 12px;
}

.exercise-card h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.tag-heavy { background: rgba(248, 113, 113, 0.15); color: var(--danger); }
.tag-moderate { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }
.tag-light { background: rgba(52, 211, 153, 0.15); color: var(--accent2); }
.tag-core { background: rgba(79, 140, 255, 0.15); color: var(--accent); }

.exercise-card .reps {
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 10px;
}

.sets-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.set-input {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.set-input label {
  font-size: 11px;
  color: var(--muted);
}

.last-hint {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
}

.set-input input {
  width: 60px;
  padding: 8px 6px;
  text-align: center;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d0f14;
  color: var(--text);
  font-size: 15px;
}

.set-input input:focus {
  outline: none;
  border-color: var(--accent);
}

.save-bar {
  position: sticky;
  bottom: 0;
  background: linear-gradient(to top, var(--bg) 70%, transparent);
  padding: 14px 0 6px;
  margin-top: 8px;
}

.save-btn {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  background: var(--accent2);
  color: #06281c;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
}

.save-btn:active { opacity: 0.85; }
.save-btn:disabled { opacity: 0.5; cursor: default; }

.status {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
  min-height: 18px;
}

.status.ok { color: var(--accent2); }
.status.err { color: var(--danger); }

.recap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.recap h2 { margin: 0 0 14px; font-size: 20px; }
.recap h3 {
  margin: 18px 0 8px;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.recap-stats { display: flex; gap: 10px; }

.recap-stat {
  flex: 1;
  background: #0d0f14;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 6px;
  text-align: center;
}

.recap-stat-value { font-size: 20px; font-weight: 700; color: var(--accent2); }
.recap-stat-label { font-size: 10px; color: var(--muted); margin-top: 4px; }

.recap-list { list-style: none; padding: 0; margin: 0; }
.recap-list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.recap-list li:last-child { border-bottom: none; }

.recap-notes { font-size: 14px; line-height: 1.6; }
.recap-note { margin-bottom: 8px; }
.muted-li { color: var(--muted); font-size: 13px; }

.recap-footer {
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

.rest-day {
  text-align: center;
  color: var(--muted);
  padding: 60px 20px;
  font-size: 16px;
}

.health-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.health-grid .field label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.health-grid .field input,
#h-date {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d0f14;
  color: var(--text);
  font-size: 15px;
}

#h-date {
  margin-top: 4px;
}

select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 15px;
  margin-bottom: 16px;
}

.chart-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 40px 20px;
}

/* Settings modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  width: 100%;
  max-width: 420px;
}

.modal h2 { margin-top: 0; font-size: 17px; }
.modal p { color: var(--muted); font-size: 13px; }

.modal label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin: 12px 0 4px;
}

.modal input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d0f14;
  color: var(--text);
  font-size: 14px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 18px;
}

.modal-actions button {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: white; }
.btn-secondary { background: transparent; border: 1px solid var(--border) !important; color: var(--text); }

/* Lock screen */
#lock-screen { z-index: 1000; }
#lock-input {
  text-align: center;
  font-size: 22px;
  letter-spacing: 10px;
}
.lock-forgot {
  text-align: center;
  margin-top: 14px !important;
}
.lock-forgot a { color: var(--muted); font-size: 12px; }

/* Header stat badges */
.sub-badges {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--muted);
}

/* Day note */
#day-note {
  width: 100%;
  min-height: 60px;
  margin-top: 4px;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0d0f14;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}

.note-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin: 4px 0 4px;
}

/* Health delta info */
#delta-info {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin-top: 8px;
  line-height: 1.6;
}