*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Soft Light (muted) theme — lower glare, desaturated steel-blue accent */
  --bg: #e6e9ee;
  --surface: #f5f7fa;
  --primary: #5a7a9a;
  --primary-dark: #4a6885;
  --danger: #d96a6a;
  --danger-dark: #c25555;
  --success: #5aa775;
  --text: #2b3440;
  --text-muted: #6b7686;
  --border: #d4dae2;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
}

/* ── Header ── */
header {
  background: var(--primary);
  color: #fff;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

header h1 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}

header .tagline {
  font-size: 0.85rem;
  opacity: 0.85;
}

/* ── Top nav tabs ── */
#top-nav {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  display: flex;
}

#top-nav button {
  flex: 1;
  padding: 14px 8px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

#top-nav button:hover { color: var(--primary); }

#top-nav button.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ── Bottom nav (mobile) ── */
#bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 12px rgba(0,0,0,0.1);
  z-index: 200;
}

#bottom-nav button {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 56px; /* comfortable touch target (#bottom-nav is mobile-only) */
  padding: 8px 4px;
  background: none;
  border: none;
  border-radius: 0;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  gap: 3px;
  cursor: pointer;
  transition: color 0.15s;
}

#bottom-nav button .bnav-icon {
  font-size: 1.35rem;
  line-height: 1;
}

#bottom-nav button.active { color: var(--primary); }
#bottom-nav button:hover  { color: var(--primary); }

/* ── Main layout ── */
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.section { display: none; }
.section.active { display: block; }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
}

/* ── Buttons ── */
button {
  cursor: pointer;
  font-family: inherit;
  font-size: 0.875rem;
  border-radius: 6px;
  border: none;
  padding: 8px 14px;
  font-weight: 600;
  transition: background 0.15s, opacity 0.15s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: var(--danger-dark); }

.btn-secondary {
  background: var(--border);
  color: var(--text);
}
.btn-secondary:hover { background: #cbd5e1; }

.btn-sm {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.btn-ghost {
  background: none;
  color: var(--text-muted);
  padding: 4px 8px;
}
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-icon {
  background: none;
  border: none;
  padding: 4px 6px;
  font-size: 1rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
}
.btn-icon:hover { background: var(--bg); color: var(--danger); }
.btn-icon.edit:hover { color: var(--primary); }
.btn-icon.split-active { color: var(--primary); }
.btn-icon.split-active:hover { color: var(--primary-dark); background: #e9edf3; }

/* ── Forms ── */
.form-group {
  margin-bottom: 14px;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(90,122,154,0.22);
  background: var(--surface);
}

textarea { resize: vertical; min-height: 60px; }

.form-row {
  display: flex;
  gap: 10px;
}

.form-row .form-group { flex: 1; }

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

.empty-state .icon { font-size: 2.5rem; margin-bottom: 10px; }
.empty-state p { font-size: 0.95rem; }

/* ── Muscle tags ── */
.muscle-tag {
  display: inline-block;
  background: #e9edf3;
  color: var(--primary-dark);
  border: 1px solid #c3cdd9;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 1px 8px;
  margin-top: 3px;
}

.muscle-tag-sm {
  display: inline-block;
  background: #e9edf3;
  color: var(--primary-dark);
  border: 1px solid #c3cdd9;
  border-radius: 99px;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 1px 7px;
  margin-left: 6px;
  vertical-align: middle;
}

.muscle-tags { margin-top: 3px; }

/* ── Plans feature ── */
.plan-card { border-left: 4px solid var(--primary); }

/* Collapsible plan cards (default collapsed; click header to expand) */
.plan-card-header {
  cursor: pointer;
  user-select: none;
  gap: 8px;
}
.plan-card-header .card-title { flex: 1; }
.plan-card-actions { cursor: default; }

.plan-caret {
  flex-shrink: 0;
  width: 0;
  height: 0;
  border-left: 5px solid var(--text-muted);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: transform 0.15s;
  transform: rotate(90deg); /* points down when expanded */
}
.plan-card.collapsed .plan-caret { transform: rotate(0deg); } /* points right */
.plan-card.collapsed .exercise-list { display: none; }

.exercise-list { margin-top: 10px; }

.exercise-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.exercise-item:last-child { border-bottom: none; }

.exercise-item .ex-name {
  font-weight: 600;
  font-size: 0.9rem;
}

.exercise-item .ex-notes {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.exercise-item-actions {
  margin-left: auto;
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

/* ── Exercise editor in plan form ── */
.ex-editor {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  margin-bottom: 8px;
  background: var(--bg);
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.ex-editor-fields { flex: 1; }
.ex-editor-fields input,
.ex-editor-fields select { margin-bottom: 6px; }
.ex-editor-fields input:last-child,
.ex-editor-fields select:last-child { margin-bottom: 0; }

.ex-muscle-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}

.ex-muscle-row select { flex: 1; margin-bottom: 0; }

.custom-sub-input { margin-top: 0; }

/* ── Plan builder: muscle-group chips ── */
.group-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 99px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ── Plan builder: grouped exercise picker ── */
#modal-exercise-picker { margin-top: 4px; }

.picker-group {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 12px;
  overflow: hidden;
}

.picker-group-title {
  background: var(--bg);
  padding: 8px 12px;
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--primary-dark);
  border-bottom: 1px solid var(--border);
}

.picker-exercises { padding: 2px 0; }

.picker-ex {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}
.picker-ex:last-child { border-bottom: none; }
.picker-ex.chosen { background: #f8fafc; }

.picker-ex-head {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0;
  color: var(--text);
  text-transform: none;
  letter-spacing: normal;
}

.picker-ex-head input[type="checkbox"] {
  width: auto;
  flex-shrink: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.custom-badge {
  display: inline-block;
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  border-radius: 99px;
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  vertical-align: middle;
}

.custom-ex-add {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  background: #fafbfc;
}
.custom-ex-add input { flex: 1; margin-bottom: 0; }
.custom-ex-add button { flex-shrink: 0; white-space: nowrap; }

/* ── Plan builder: stacked target sliders ── */
.ex-controls {
  margin-top: 10px;
  padding-left: 26px;
}

.stacked-sliders {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slider-field { width: 100%; }

.slider-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 3px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.customize-btn { margin-top: 10px; }
.customize-btn.active { color: var(--primary); }

/* ── Sets stepper (target sets per exercise) ── */
.sets-counter {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.sets-counter .slider-label { margin-bottom: 0; }

.stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
}
.stepper-btn {
  background: var(--bg);
  color: var(--text);
  border: none;
  width: 30px;
  height: 30px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  padding: 0;
  border-radius: 0;
}
.stepper-btn:hover:not(:disabled) { background: #cbd5e1; }
.stepper-btn:disabled { opacity: 0.4; cursor: default; }
.stepper-val {
  min-width: 34px;
  text-align: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.per-set-editor {
  margin-top: 10px;
  border-left: 2px solid var(--border);
  padding-left: 12px;
}

.per-set-row { margin-bottom: 12px; }

.per-set-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.per-set-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ── Plan card: target line + group tags ── */
.ex-target {
  font-size: 0.78rem;
  color: var(--primary-dark);
  font-weight: 600;
  margin-top: 2px;
}

.plan-group-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 10px;
}

/* ── Log feature ── */

/* ── Calendar (Log tab) ── */
.calendar-card { padding: 16px; margin-bottom: 16px; }

.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.cal-title { font-weight: 700; font-size: 1rem; }
.cal-nav { min-width: 40px; }

.cal-weekdays,
.cal-grid {
  display: grid;
  /* minmax(0, 1fr) lets tracks shrink below content width so a wide marker/pill
     can't push the 7 columns past the viewport (repeat(7, 1fr) = minmax(auto,1fr)
     would grow to min-content and overflow right on narrow screens). */
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}
.cal-weekdays { margin-bottom: 4px; }
.cal-weekdays span {
  text-align: center;
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.cal-cell {
  aspect-ratio: 1 / 1;
  border-radius: 6px;
}
.cal-empty { background: transparent; }

.cal-day {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 2px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font: inherit;
  cursor: pointer;
  overflow: hidden; /* a marker can never spill outside its cell */
}
.cal-day:hover { border-color: var(--primary); }
.cal-today {
  border-color: var(--primary);
  box-shadow: inset 0 0 0 1px var(--primary);
}
.cal-daynum { font-size: 0.8rem; font-weight: 600; }

/* Logged-day marker: green circle with a CSS-drawn check */
.cal-check {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--success);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.cal-check::after {
  content: '';
  width: 3px;
  height: 6px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(0, -1px);
}

/* Rest-day marker: muted grey pill — distinct from the green check */
.cal-rest {
  display: inline-block;
  background: var(--border);
  color: var(--text-muted);
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  border-radius: 99px;
  padding: 1px 6px;
}

/* Derived 'Missed' marker: red pill / red dot — distinct from green check & grey Rest */
.cal-missed {
  display: inline-block;
  background: var(--danger);
  color: #fff;
  border: 1px solid var(--danger);
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  border-radius: 99px;
  padding: 0 6px;
}

.cal-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--text-muted);
}
.cal-legend-item { display: inline-flex; align-items: center; gap: 6px; }

/* ── Log modal extras ── */
.log-modal-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: -10px;
  margin-bottom: 16px;
}
.rest-toggle { gap: 10px; margin-bottom: 16px; }
.rest-toggle-text { font-weight: 600; }
.modal-actions .btn-danger { margin-right: auto; }

/* ── Per-exercise status: Done / Skipped ── */
.ex-status-btns {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.status-btn {
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 6px;
}
.status-btn:hover { border-color: var(--text-muted); color: var(--text); }
.status-done-btn.active {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}
.status-skipped-btn.active {
  background: var(--text-muted);
  border-color: var(--text-muted);
  color: #fff;
}
.log-exercise-block.status-done { border-color: var(--success); }
.log-exercise-block.status-skipped { opacity: 0.72; }

/* ── Log modal: keep the sets table inside the modal (no sideways scroll) ──
   Root cause of the old clipping: the table was natural-width with two
   slider+number cells AND word action buttons, so it overflowed the fixed-width
   modal and the auto overflow-x pushed Split/Remove out of reach. table-layout
   fixed + tightened cells + stacked action buttons keep everything in view. */
.log-exercises .sets-table { table-layout: fixed; }
.log-exercises .sets-table th:first-child { width: 22px; }
.log-exercises .sets-table th:last-child  { width: 64px; }
.log-exercises .sets-table th,
.log-exercises .sets-table td { padding: 6px 4px; }
.log-exercises .slider-cell { gap: 5px; }
.log-exercises .slider-cell input[type="range"] { min-width: 32px; }
.log-exercises .slider-cell input[type="number"] { width: 44px; padding: 4px 3px; }
.log-exercises .set-actions { width: 64px; text-align: center; white-space: normal; }
.log-exercises .set-actions .btn-icon {
  display: block;
  width: 100%;
  margin: 0 0 3px;
  padding: 3px 2px;
  font-size: 0.72rem;
  text-align: center;
}
.log-exercises .set-actions .btn-icon:last-child { margin-bottom: 0; }
.log-exercises .segment-row { flex-wrap: wrap; gap: 4px; }
.log-exercises .segment-row .seg-input { width: 48px; }

.log-exercises { margin-top: 16px; }

.log-exercise-block {
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 12px;
  overflow: hidden;
}

.log-exercise-header {
  background: var(--bg);
  padding: 10px 14px;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.ex-header-name {
  flex: 1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.log-exercise-notes {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 400;
  flex-basis: 100%;
  padding-left: 30px;
}

/* ── Done checkbox ── */
.ex-check-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  flex-shrink: 0;
}

.ex-check-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.ex-check-box {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.ex-check-label input:checked ~ .ex-check-box {
  background: var(--success);
  border-color: var(--success);
}

/* CSS-drawn checkmark (no emoji glyph) */
.ex-check-label input:checked ~ .ex-check-box::after {
  content: '';
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}

.log-exercise-block.done .log-exercise-header {
  opacity: 0.6;
}

/* ── Sets table ── */
.sets-table {
  width: 100%;
  border-collapse: collapse;
}

.sets-table th {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  background: #fafbfc;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.sets-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.sets-table tr:last-child td { border-bottom: none; }

.set-num {
  font-size: 0.82rem;
  font-weight: 700;
  width: 28px;
  text-align: center;
}

.set-actions {
  width: 64px;
  text-align: right;
  white-space: nowrap;
}

.add-set-row td { padding: 8px 10px; }

/* ── Slider cell ── */
.slider-cell {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-cell input[type="range"] {
  flex: 1;
  min-width: 60px;
  padding: 0;
  border: none;
  box-shadow: none;
  background: transparent;
  height: 20px;
  cursor: pointer;
  accent-color: var(--primary);
}

.slider-cell input[type="number"] {
  width: 58px;
  padding: 4px 6px;
  text-align: center;
  font-size: 0.85rem;
}

/* ── Plan modal weight slider — thicker track ── */
.plan-slider {
  -webkit-appearance: none;
  appearance: none;
  height: 20px;
}
.plan-slider::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 3px;
  background: var(--border);
}
.plan-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: -6px;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.plan-slider::-moz-range-track {
  height: 6px;
  border-radius: 3px;
  background: var(--border);
}
.plan-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: none;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* ── Plan modal reps stepper ── */
.reps-stepper {
  width: 100%;
  justify-content: space-between;
}
.reps-stepper .stepper-val {
  flex: 1;
}

/* ── Split / segments ── */
.split-row td { background: #fafeff; }

.segments-editor {
  padding: 4px 0;
}

.seg-header {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 6px;
}

.segment-row {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 5px;
  flex-wrap: nowrap;
}

.segment-row .seg-input {
  width: 60px;
  padding: 4px 6px;
  text-align: center;
  font-size: 0.85rem;
}

.seg-at, .seg-unit {
  color: var(--text-muted);
  font-size: 0.82rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.seg-add-btn { margin-top: 4px; }

/* ── Log history ── */
.log-entry {
  border-left: 4px solid var(--success);
}

.log-entry-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.log-entry-plan {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 8px;
}

.log-entry-summary {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.log-entry-summary span {
  display: inline-block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 7px;
  margin: 2px 3px 2px 0;
}

.log-entry-actions {
  margin-top: 10px;
}

/* ── Recommendations feature ── */
.muscle-selector {
  margin-bottom: 24px;
}

.muscle-selector select {
  max-width: 300px;
}

.exercise-suggestions { list-style: none; }

.exercise-suggestions li {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.exercise-suggestions li:last-child { border-bottom: none; }

.exercise-suggestions .ex-num {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  min-width: 22px;
  padding-top: 2px;
}

.exercise-suggestions a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.exercise-suggestions a:hover { text-decoration: underline; color: var(--primary-dark); }

.exercise-suggestions .ex-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Section header ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

/* ── Alerts ── */
.alert {
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  margin-bottom: 14px;
}

.alert-info {
  background: #e9edf3;
  color: #1d4ed8;
  border: 1px solid #c3cdd9;
}

.alert-error {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

/* ── Header user / logout ── */
header { justify-content: space-between; }

.header-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-email {
  font-size: 0.8rem;
  opacity: 0.9;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-logout {
  background: rgba(255,255,255,0.18);
  color: #fff;
  font-size: 0.8rem;
  padding: 6px 12px;
}
.btn-logout:hover { background: rgba(255,255,255,0.3); }

/* ── Auth gate ── */
.auth-screen {
  max-width: 420px;
  margin: 48px auto;
  padding: 0 16px;
}

.auth-card { padding: 28px 24px; }

.auth-title {
  font-size: 1.25rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 18px;
}

.auth-tabs {
  display: flex;
  gap: 6px;
  background: var(--bg);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  background: none;
  color: var(--text-muted);
  padding: 8px;
  border-radius: 6px;
}

.auth-tab.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: var(--shadow);
}

.auth-form .form-group { margin-bottom: 14px; }

.auth-submit { width: 100%; margin-top: 4px; }
.auth-submit:disabled { opacity: 0.6; cursor: default; }

/* ── Boot / loading spinner ── */
.boot-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 12px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Modal / overlay ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ── Utilities ── */
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.flex  { display: flex; }
.gap-8 { gap: 8px; }
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
.hidden { display: none !important; }

/* ── Responsive ── */
@media (max-width: 600px) {
  main {
    padding: 12px 10px 72px; /* bottom = clearance above the 56px bottom nav */
  }

  /* Prevent iOS Safari auto-zoom on focus: any input under 16px zooms the page.
     Forced to 16px on mobile across every field (modal, Log, auth). */
  input, select, textarea { font-size: 16px !important; }

  #top-nav { display: none; }
  #bottom-nav { display: flex; }

  .form-row { flex-direction: column; gap: 0; }

  .slider-cell input[type="range"] { min-width: 40px; }
  .slider-cell input[type="number"] { width: 50px; }

  .sets-table th:nth-child(2),
  .sets-table td:nth-child(2),
  .sets-table th:nth-child(3),
  .sets-table td:nth-child(3) {
    /* keep visible but slider shrinks */
  }

  .ex-muscle-row { flex-direction: column; }
  .ex-muscle-row select { width: 100%; }

  .modal { padding: 18px; }

  /* ── Calendar: fit within the viewport, no horizontal/page scroll ── */
  .calendar-card { padding: 10px; }
  .cal-header { margin-bottom: 8px; }
  .cal-weekdays,
  .cal-grid { gap: 3px; }
  .cal-weekdays span { font-size: 0.62rem; }

  /* Relax the square aspect-ratio so 6 rows fit vertically; min-height keeps a
     tappable cell regardless of column width. */
  .cal-cell { aspect-ratio: auto; }
  .cal-day {
    min-height: 44px;
    padding: 4px 1px;
    gap: 2px;
  }
  .cal-daynum { font-size: 0.78rem; }

  /* Shrink the text pills into fixed colored DOTS (keep class names + colors so
     identity and the legend stay valid). The legend is the key for each color. */
  .cal-check,
  .cal-rest,
  .cal-missed {
    width: 10px;
    height: 10px;
    min-width: 10px;
    padding: 0;
    border-radius: 50%;
    font-size: 0;
    letter-spacing: 0;
    line-height: 0;
  }
  .cal-check::after { display: none; } /* plain green dot */

  .cal-legend {
    justify-content: center;
    gap: 8px 14px;
    margin-top: 10px;
    font-size: 0.72rem;
  }
}

@media (min-width: 601px) {
  #bottom-nav { display: none; }
}

/* ── Hide nav while the plan modal is open (overrides the nav media queries) ── */
body.modal-open #top-nav,
body.modal-open #bottom-nav { display: none !important; }

/* ── Empty-state ASCII mark ── */
.empty-state-mark {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--text-muted);
}

/* ── Header burger (three stacked CSS bars) ── */
.burger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 38px;
  height: 38px;
  padding: 8px;
  background: rgba(255,255,255,0.18);
  border-radius: 6px;
}
.burger:hover { background: rgba(255,255,255,0.3); }
.burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--surface);
  border-radius: 2px;
}

/* ── Sliding account panel ── */
.account-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 290;
}

.account-panel {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: 280px;
  max-width: 85vw;
  background: var(--surface);
  box-shadow: -4px 0 24px rgba(0,0,0,0.18);
  transform: translateX(100%);
  transition: transform 0.22s ease;
  z-index: 300;
  display: flex;
  flex-direction: column;
}
.account-panel.open { transform: translateX(0); }

.account-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}
.account-panel-title { font-weight: 700; font-size: 1rem; }

.panel-close {
  background: none;
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  padding: 4px 9px;
  border-radius: 4px;
}
.panel-close:hover { background: var(--bg); color: var(--text); }

.account-panel-body { padding: 18px; }

.account-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 4px;
}

.account-email {
  font-size: 0.9rem;
  font-weight: 600;
  word-break: break-all;
  margin-bottom: 18px;
}

.account-label-spaced { margin-top: 18px; }

/* Weight-unit lb/kg toggle (mirrors the auth tabs) */
.unit-toggle {
  display: flex;
  gap: 6px;
  background: var(--bg);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 18px;
}
.unit-opt {
  flex: 1;
  background: none;
  color: var(--text-muted);
  padding: 8px;
  border-radius: 6px;
  font-weight: 600;
}
.unit-opt.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: var(--shadow);
}

.account-panel-body .btn-secondary { width: 100%; }