:root {
  --bg: #0b1220;
  --panel: rgba(17, 24, 39, 0.92);
  --panel-soft: rgba(31, 41, 55, 0.8);
  --text: #f8fafc;
  --muted: #9ca3af;
  --border: rgba(255,255,255,.09);
  --accent: #f59e0b;
  --accent-2: #fb7185;
  --success: #34d399;
  --shadow: 0 20px 50px rgba(0,0,0,.25);
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(245,158,11,.16), transparent 32%),
    radial-gradient(circle at top left, rgba(251,113,133,.10), transparent 30%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }

.app-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: max(22px, env(safe-area-inset-top)) 18px max(28px, env(safe-area-inset-bottom));
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 4px 22px;
}

.eyebrow {
  margin: 0 0 6px;
  font-size: .72rem;
  letter-spacing: .14em;
  font-weight: 800;
  color: var(--accent);
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 4px; font-size: clamp(2rem, 7vw, 3.4rem); line-height: .98; letter-spacing: -.05em; }
h2 { margin-bottom: 4px; font-size: 1.08rem; }
.subtitle { margin: 0; color: var(--muted); }

.streak-badge {
  flex: 0 0 auto;
  display: flex;
  gap: 9px;
  align-items: center;
  background: linear-gradient(145deg, rgba(245,158,11,.18), rgba(251,113,133,.12));
  border: 1px solid rgba(245,158,11,.25);
  border-radius: 18px;
  padding: 10px 12px;
}
.streak-emoji { font-size: 1.4rem; }
.streak-badge strong { display: block; font-size: 1.25rem; line-height: 1; }
.streak-badge small { display: block; color: var(--muted); margin-top: 3px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.routine-card { padding: 10px 18px 18px; }
.exercise-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.exercise-row p { margin: 0; color: var(--muted); font-size: .88rem; }

.stepper {
  display: grid;
  grid-template-columns: 42px minmax(70px, 1fr) 42px;
  align-items: center;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.step {
  border: 0;
  background: transparent;
  color: var(--text);
  height: 46px;
  font-size: 1.5rem;
  cursor: pointer;
}
.step:active { background: rgba(255,255,255,.06); }
.value { text-align: center; font-weight: 800; }

.complete-btn, .secondary-btn {
  width: 100%;
  border: 0;
  border-radius: 17px;
  cursor: pointer;
  font-weight: 800;
}
.complete-btn {
  margin-top: 18px;
  padding: 16px;
  color: #111827;
  background: linear-gradient(135deg, #fbbf24, #fb7185);
  box-shadow: 0 10px 24px rgba(245,158,11,.18);
}
.complete-btn.completed { background: linear-gradient(135deg, #34d399, #10b981); }
.complete-message { min-height: 1.2em; margin: 10px 2px 0; color: var(--muted); text-align: center; font-size: .9rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 14px 0;
}
.stat-card {
  padding: 16px;
  background: rgba(17,24,39,.78);
  border: 1px solid var(--border);
  border-radius: 20px;
}
.stat-card:nth-child(5) { grid-column: 1 / -1; }
.stat-card strong { display: block; font-size: 1.55rem; margin: 6px 0 2px; }
.stat-card small { color: var(--muted); }

.calendar-card, .history-card, .settings-card { padding: 18px; margin-top: 14px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.link-btn { border: 0; background: transparent; color: #fca5a5; cursor: pointer; padding: 6px; }

.calendar-toolbar {
  display: grid;
  grid-template-columns: 42px 1fr 42px;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
.icon-btn {
  height: 42px;
  width: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel-soft);
  color: var(--text);
  cursor: pointer;
}
.calendar-month-wrap { text-align: center; }
.calendar-month-label { font-weight: 800; }
.calendar-month-meta { margin-top: 3px; color: var(--muted); font-size: .86rem; }
.calendar-weekdays, .calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
}
.calendar-weekdays {
  margin-top: 16px;
  color: var(--muted);
  font-size: .8rem;
  text-align: center;
}
.calendar-grid { margin-top: 10px; }
.calendar-cell {
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.85);
  border-radius: 18px;
  min-height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--text);
  cursor: pointer;
  padding: 8px 4px;
}
.calendar-cell.today { box-shadow: inset 0 0 0 1px rgba(251,191,36,.55); }
.calendar-cell.completed {
  background: linear-gradient(135deg, rgba(59,130,246,.16), rgba(245,158,11,.12));
}
.calendar-cell.selected {
  border-color: rgba(245,158,11,.75);
  box-shadow: 0 0 0 1px rgba(245,158,11,.35);
}
.calendar-cell.not-completed .calendar-day { opacity: .88; }
.calendar-day { font-weight: 800; }
.calendar-mark {
  min-height: 12px;
  font-size: .8rem;
  line-height: 1;
  color: #60a5fa;
}
.empty-cell {
  background: transparent;
  border: 0;
  min-height: 58px;
}
.calendar-selected {
  margin-top: 12px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 14px;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.45;
}
.calendar-selected strong { color: var(--text); }

.history-list { display: grid; gap: 10px; margin-top: 8px; }
.history-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 14px;
}
.history-date { font-weight: 750; }
.history-detail { color: var(--muted); font-size: .84rem; margin-top: 3px; }
.edit-btn { border: 0; background: transparent; color: #fcd34d; cursor: pointer; font-weight: 700; }
.empty { color: var(--muted); text-align: center; padding: 20px 0 8px; }

.settings-copy { color: var(--muted); font-size: .9rem; }
.settings-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.settings-grid label { color: var(--muted); font-size: .82rem; }
.settings-grid input {
  width: 100%;
  margin-top: 6px;
  padding: 11px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0f172a;
  color: var(--text);
}
.secondary-btn { margin-top: 14px; padding: 13px; background: #e5e7eb; color: #111827; }
.footer-note { text-align: center; color: #6b7280; font-size: .8rem; margin: 18px 0 0; }

@media (max-width: 560px) {
  .hero { align-items: center; }
  .streak-badge { padding: 9px 10px; }
  .exercise-row { align-items: flex-start; }
  .exercise-row > div:first-child { max-width: 50%; }
  .settings-grid { grid-template-columns: 1fr; }
  .calendar-weekdays { font-size: .72rem; }
  .calendar-grid { gap: 6px; }
  .calendar-cell, .empty-cell { min-height: 52px; border-radius: 14px; }
}

/* V1.2 guided-session controls */
.session-card {
  padding: 18px;
  margin-bottom: 14px;
  background: linear-gradient(145deg, rgba(17,24,39,.96), rgba(24,32,48,.92));
}
.session-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.session-topline h2 { margin-bottom: 0; }
.workout-elapsed {
  flex: 0 0 auto;
  min-width: 84px;
  text-align: center;
  font-size: 1.8rem;
  font-weight: 850;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.03em;
  color: #fbbf24;
  background: rgba(245,158,11,.10);
  border: 1px solid rgba(245,158,11,.22);
  border-radius: 16px;
  padding: 10px 12px;
}
.session-start-btn {
  width: 100%;
  margin-top: 16px;
  padding: 14px;
  border: 1px solid rgba(96,165,250,.32);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(59,130,246,.22), rgba(14,165,233,.14));
  color: var(--text);
  font-weight: 800;
  cursor: pointer;
}
.session-start-btn:disabled { opacity: .85; cursor: default; }
.session-status {
  margin: 9px 2px 0;
  color: var(--muted);
  text-align: center;
  font-size: .88rem;
}
.exercise-actions {
  display: grid;
  justify-items: stretch;
  gap: 8px;
  min-width: 155px;
}
.exercise-complete-btn {
  border: 1px solid rgba(52,211,153,.28);
  border-radius: 12px;
  padding: 9px 10px;
  background: rgba(52,211,153,.10);
  color: #a7f3d0;
  font-weight: 800;
  cursor: pointer;
}
.exercise-complete-btn:disabled { opacity: .42; cursor: default; }
.exercise-complete-btn.done {
  opacity: 1;
  color: #052e25;
  background: linear-gradient(135deg, #6ee7b7, #34d399);
  border-color: transparent;
}
.exercise-complete-btn.timing {
  opacity: 1;
  color: #111827;
  background: linear-gradient(135deg, #fbbf24, #fb923c);
  border-color: transparent;
  font-variant-numeric: tabular-nums;
}
.step:disabled { opacity: .35; cursor: default; }
.history-meta, .calendar-detail-meta {
  color: #fbbf24;
  font-size: .8rem;
  margin-top: 4px;
}

@media (max-width: 560px) {
  .exercise-row { align-items: center; }
  .exercise-actions { min-width: 150px; }
  .session-topline { align-items: center; }
  .workout-elapsed { min-width: 76px; font-size: 1.55rem; }
}