/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0a0a;
  --bg1:       #111111;
  --bg2:       #1a1a1a;
  --bg3:       #222222;
  --border:    #2e2e2e;
  --accent:    #f05a24;
  --accent-dim:#6b2810;
  --green:     #2ecc71;
  --yellow:    #f39c12;
  --red:       #e74c3c;
  --text:      #e8e8e8;
  --text-dim:  #7a7a7a;
  --text-muted:#4a4a4a;
  --radius:    6px;
  --font:      'SF Mono', 'Consolas', 'Menlo', monospace;
}

html { font-size: 14px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ── Header ── */
#app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

#app-header h1 {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

#sync-status {
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 5px;
}

#sync-status .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}
#sync-status.synced .dot { background: var(--green); }
#sync-status.syncing .dot { background: var(--yellow); animation: pulse 1s infinite; }
#sync-status.error .dot { background: var(--red); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.user-chip {
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 11px;
  padding: 5px 8px;
  cursor: pointer;
}

.user-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Day Tabs ── */
#day-tabs {
  display: flex;
  overflow-x: auto;
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
#day-tabs::-webkit-scrollbar { display: none; }

.day-tab {
  flex: 0 0 auto;
  padding: 10px 16px;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
}
.day-tab:hover { color: var(--text-dim); }
.day-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── Main Layout ── */
#main {
  padding: 12px 12px 100px;
  max-width: 600px;
  margin: 0 auto;
}

/* ── Section ── */
.section {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
}

.section-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.section-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.section-body { padding: 12px 14px; }

.section-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── Day Info ── */
#day-info {
  font-size: 12px;
  color: var(--text-dim);
}

#day-info strong {
  color: var(--accent);
  font-size: 15px;
  display: block;
  margin-bottom: 2px;
}

/* ── Daily Status ── */
.status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.field-label {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

input[type="date"],
input[type="number"],
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  width: 100%;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  padding: 7px 10px;
  outline: none;
  transition: border-color 0.15s;
  -webkit-appearance: none;
  appearance: none;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}

input[type="date"] {
  min-height: 34px;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.6);
}

@media (pointer: coarse) {
  input[type="date"],
  input[type="number"],
  input[type="text"],
  input[type="email"],
  input[type="password"],
  textarea,
  select {
    font-size: 16px;
  }
}

/* ── Energy Toggle ── */
.energy-toggle {
  display: flex;
  gap: 4px;
}

.etog {
  flex: 1;
  padding: 7px 0;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.etog.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Previous Record Reference ── */
.prev-ref {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-top: 4px;
}

.prev-label {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.prev-chip {
  font-size: 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--text-dim);
}

.prev-chip small {
  color: var(--text-muted);
  font-size: 9px;
}

/* ── Exercise Card ── */
.exercise-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
}

.exercise-header {
  padding: 9px 12px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  gap: 8px;
}

.exercise-index {
  font-size: 10px;
  color: var(--text-muted);
  padding-top: 2px;
  min-width: 16px;
}

.exercise-name {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
}

.exercise-preset {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 2px;
  font-weight: 400;
}

.exercise-toggle {
  font-size: 11px;
  color: var(--text-muted);
  padding-top: 2px;
  transition: transform 0.2s;
}

.exercise-card.expanded .exercise-toggle {
  transform: rotate(180deg);
}

.exercise-body {
  display: none;
  padding: 0 12px 12px;
  border-top: 1px solid var(--border);
}

.exercise-card.expanded .exercise-body { display: block; }

.custom-muscle-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 10px 0 2px;
}

.custom-muscle-chip,
.prog-muscle-chip {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font);
  font-size: 10px;
  line-height: 1;
  padding: 4px 7px;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.custom-muscle-chip.active,
.prog-muscle-chip.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.exercise-fields {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 80px;
  gap: 6px;
  margin-top: 10px;
}

@media (max-width: 360px) {
  .exercise-fields {
    grid-template-columns: 1fr 1fr;
  }
}

.field-group { display: flex; flex-direction: column; }

.notes-row { margin-top: 6px; }

textarea {
  resize: none;
  height: 52px;
  line-height: 1.4;
}

/* ── Summary ── */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.summary-item {
  background: var(--bg2);
  padding: 10px 8px;
  text-align: center;
}

.summary-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.summary-label {
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 3px;
}

/* ── Action Buttons ── */
#action-bar {
  position: fixed;
  bottom: 0;
  left: 0; right: 0;
  background: var(--bg1);
  border-top: 1px solid var(--border);
  padding: 10px 12px;
  display: flex;
  gap: 8px;
  z-index: 100;
}

.btn {
  flex: 1;
  padding: 12px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
}

.btn:active { transform: scale(0.97); opacity: 0.85; }

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-secondary {
  background: var(--bg3);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.mini-btn {
  flex: none;
  padding: 4px 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

.mini-btn:active {
  transform: scale(0.97);
  opacity: 0.85;
}

/* ── History Section ── */
#history-section {
  margin-top: 6px;
}

.history-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.history-controls input,
.history-controls select {
  flex: 1;
}

.history-record {
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
}

.history-record-header {
  padding: 9px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.history-date {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

.history-day-badge {
  font-size: 10px;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 600;
  margin-left: 8px;
}

.history-record-body {
  display: none;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}

.history-record.expanded .history-record-body { display: block; }

.history-exercise-row {
  padding: 6px 0;
  border-bottom: 1px solid var(--bg3);
  font-size: 12px;
}
.history-exercise-row:last-child { border-bottom: none; }

.history-exercise-name {
  color: var(--text-dim);
  margin-bottom: 3px;
  font-weight: 600;
}

.history-sets {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.set-chip {
  font-size: 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px 6px;
  color: var(--text-muted);
}

.history-status-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
  font-size: 11px;
  color: var(--text-muted);
}

.history-stat { color: var(--text-dim); }
.history-stat span { color: var(--accent); }

/* ── Weekly/Monthly Nav ── */
.weekly-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.weekly-nav span {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
  flex: 1;
  text-align: center;
}

.weekly-nav-btn {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 18px;
  line-height: 1;
  padding: 2px 12px 4px;
  cursor: pointer;
}

.weekly-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.tracker-quote {
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.55;
}

.tracker-day-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}
.tracker-day-row:last-child { border-bottom: none; }
.tracker-day-row.empty { opacity: 0.55; }

.tracker-day-label {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
}
.tracker-day-label span {
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 4px;
}
.tracker-day-name {
  color: var(--text-dim);
  font-size: 11px;
  margin-top: 2px;
}
.tracker-day-metrics {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 84px;
  text-align: right;
  color: var(--text-muted);
  font-size: 10px;
}
.tracker-day-metrics span:first-child {
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.tracker-muscle-row {
  display: grid;
  grid-template-columns: 54px 1fr 32px;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: 11px;
}
.tracker-muscle-row.empty { opacity: 0.42; }
.tracker-muscle-row span { color: var(--text-dim); }
.tracker-muscle-row strong {
  color: var(--accent);
  text-align: right;
}
.tracker-muscle-bar {
  height: 7px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
}
.tracker-muscle-bar i {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
}

.tracker-weight-summary {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-muted);
  font-size: 11px;
  margin-bottom: 8px;
}
.tracker-weight-summary strong { color: var(--accent); }
.tracker-weight-chart {
  width: 100%;
  height: auto;
  display: block;
}
.tracker-empty {
  color: var(--text-muted);
  font-size: 12px;
  padding: 16px 0;
  text-align: center;
}

.history-summary-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 10px;
}

.history-summary-item {
  background: var(--bg2);
  min-width: 0;
  padding: 9px 5px;
  text-align: center;
}

.history-summary-val {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.history-summary-label {
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 9px;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-transform: uppercase;
}

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 18px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  white-space: nowrap;
  z-index: 200;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#toast.success { border-color: var(--green); color: var(--green); }
#toast.error { border-color: var(--red); color: var(--red); }

/* ── Nav ── */
#nav-bar {
  display: flex;
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
}

.nav-btn {
  flex: 1;
  padding: 10px;
  font-family: var(--font);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color 0.15s;
}

.nav-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── View toggle ── */
.view { display: none; }
.view.active { display: block; }

/* ── Demo banner ── */
.demo-banner {
  background: #0d2a1a;
  border-bottom: 1px solid #1a5c35;
  padding: 6px 16px;
  font-size: 11px;
  font-weight: 600;
  color: #2ecc71;
  text-align: center;
  letter-spacing: 0.04em;
}

/* ── No-firebase fallback note ── */
.warning-banner {
  background: #2a1a00;
  border: 1px solid #5a3a00;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 11px;
  color: #f39c12;
  margin-bottom: 10px;
  line-height: 1.5;
}

/* ── Program Management ── */
.prog-day-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.prog-inline-input {
  background: transparent;
  border: none;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
  padding: 2px 4px;
  transition: border-color 0.15s;
  width: auto;
  -webkit-appearance: none;
  appearance: none;
}
.prog-inline-input:hover  { border-bottom-color: var(--border); }
.prog-inline-input:focus  { border-bottom-color: var(--accent); outline: none; }

.prog-day-name    { font-size: 13px; font-weight: 600; flex: 1; min-width: 0; }
.prog-day-weekday { width: 38px; text-align: center; color: var(--text-muted); }

.prog-weekday-sel {
  background: transparent;
  border: none;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 11px;
  padding: 2px 2px;
  cursor: pointer;
  transition: border-color 0.15s;
  -webkit-appearance: none;
  appearance: none;
  width: 42px;
  text-align: center;
}
.prog-weekday-sel:hover  { border-bottom-color: var(--border); }
.prog-weekday-sel:focus  { border-bottom-color: var(--accent); outline: none; }

.prog-ex-list { display: flex; flex-direction: column; }

.prog-ex-header {
  display: grid;
  grid-template-columns: 18px 1fr 42px 96px 24px;
  gap: 6px;
  padding: 2px 0 4px;
  font-size: 10px;
  color: var(--text-muted);
  text-align: center;
}
.prog-ex-header span:nth-child(2) { text-align: left; }

.prog-ex-row {
  display: grid;
  grid-template-columns: 18px 1fr 42px 96px 24px;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.prog-ex-row:last-child { border-bottom: none; }

.prog-ex-handle {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  cursor: grab;
  user-select: none;
  touch-action: none;
  line-height: 1;
}
.prog-ex-handle:active { cursor: grabbing; color: var(--accent); }
.prog-ex-row.dragging  { opacity: 0.35; }
.prog-ex-row.drag-over { box-shadow: 0 -2px 0 var(--accent); }

.prog-ex-name   { font-size: 12px; }
.prog-ex-preset { width: 96px; font-size: 11px; color: var(--text-muted); }

.prog-muscle-chips {
  grid-column: 2 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding-top: 2px;
}

.prog-ex-sets,
.prog-ex-reps-min,
.prog-ex-reps-max {
  width: 42px;
  font-size: 12px;
  text-align: center;
}
.prog-ex-sets::-webkit-inner-spin-button,
.prog-ex-sets::-webkit-outer-spin-button,
.prog-ex-reps-min::-webkit-inner-spin-button,
.prog-ex-reps-min::-webkit-outer-spin-button,
.prog-ex-reps-max::-webkit-inner-spin-button,
.prog-ex-reps-max::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.prog-ex-sets,
.prog-ex-reps-min,
.prog-ex-reps-max { -moz-appearance: textfield; }

.prog-ex-reps-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}
.prog-ex-reps-sep {
  font-size: 11px;
  color: var(--text-muted);
  flex: none;
}

.prog-del-ex {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  padding: 2px 5px;
  border-radius: 3px;
  line-height: 1;
  transition: color 0.15s;
}
.prog-del-ex:hover { color: var(--red); }

/* ── Login ── */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 50px);
  padding: 24px 16px;
}

.login-card {
  width: 100%;
  max-width: 320px;
  background: var(--bg1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.login-error {
  font-size: 11px;
  color: var(--red);
  min-height: 18px;
  margin-bottom: 8px;
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.logout-btn:hover {
  border-color: var(--red);
  color: var(--red);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }