:root {
  --bg: #0f1115;
  --card: #171a21;
  --card-2: #1e222b;
  --text: #eef0f3;
  --muted: #9aa3af;
  --accent: #4ade80;
  --accent-2: #22c55e;
  --warn: #f59e0b;
  --danger: #f87171;
  --border: #262b35;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

header h1 {
  font-size: 22px;
  margin: 0;
  letter-spacing: -0.01em;
}

.unit-select {
  background: var(--card-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 13px;
}

/* ---- Tabs ---- */
.tabs, .subtabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.subtabs {
  margin-bottom: 12px;
}

.tab-btn, .subtab-btn {
  flex: 1;
  background: var(--card);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.tab-btn.active, .subtab-btn.active {
  background: var(--accent-2);
  color: #06210f;
  border-color: var(--accent-2);
}

.tab-panel, .subtab-panel {
  display: none;
}

.tab-panel.active, .subtab-panel.active {
  display: block;
}

/* ---- Cards ---- */
section.meta-card, section.add-exercise-card, section.summary-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.meta-row:last-child { margin-bottom: 0; }

.meta-row label {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex: 0 0 auto;
}

input[type="text"], input[type="number"], input[type="date"], select, textarea {
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
}

.meta-row input { flex: 1; text-align: left; }
#workoutDate { flex: 0 0 auto; }

.add-exercise-row input {
  width: 100%;
  margin-bottom: 10px;
}

.type-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.type-btn {
  flex: 1;
  background: var(--card-2);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.type-btn.active {
  background: rgba(74, 222, 128, 0.15);
  color: var(--accent);
  border-color: var(--accent);
}

button.primary-btn, button.save-btn {
  width: 100%;
  background: var(--accent-2);
  color: #06210f;
  border: none;
  border-radius: 10px;
  padding: 12px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
}

button.save-btn {
  margin-top: 4px;
  font-size: 16px;
}

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

.ghost-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-weight: 500;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
}

/* ---- Templates: load-on-log-tab & save prompt ---- */
.template-load-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
}

.template-load-row {
  display: flex;
  gap: 8px;
}

.template-load-row select {
  flex: 1;
}

.template-save-row {
  margin: 4px 0 16px;
}

.template-save-row button {
  width: 100%;
}

.template-save-prompt {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: -8px 0 16px;
}

.template-save-prompt input {
  width: 100%;
  margin-bottom: 10px;
}

.template-save-actions {
  display: flex;
  gap: 8px;
}

.template-save-actions button {
  flex: 1;
}

/* ---- Templates tab ---- */
.templates-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.template-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.template-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.template-name {
  font-weight: 600;
  font-size: 16px;
}

.template-meta {
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.template-exercises {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 10px;
}

.template-exercises .ex-name {
  color: var(--text);
}

.template-actions {
  display: flex;
  gap: 8px;
}

.template-actions button {
  flex: 1;
}

/* ---- Exercise entry cards ---- */
.entries-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
}

.entry-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.entry-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 6px;
}

.entry-title-wrap { flex: 1; }

.entry-title {
  font-size: 16px;
  font-weight: 600;
}

.entry-type-badge {
  display: inline-block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
  margin-left: 8px;
  vertical-align: middle;
}

.entry-last {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.delete-btn {
  background: transparent;
  color: var(--muted);
  border: none;
  font-size: 18px;
  padding: 0 4px;
  line-height: 1;
  cursor: pointer;
}

.set-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.set-index {
  width: 22px;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
  flex: 0 0 auto;
}

.set-row input[type="number"] {
  width: 0;
  flex: 1;
  min-width: 0;
  text-align: center;
}

.set-row .colon {
  color: var(--muted);
  flex: 0 0 auto;
}

.set-row .unit-label {
  color: var(--muted);
  font-size: 12px;
  flex: 0 0 auto;
  width: 24px;
}

.add-set-btn {
  margin-top: 10px;
  width: 100%;
  background: var(--card-2);
  color: var(--text);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 8px;
  font-size: 13px;
  cursor: pointer;
}

.note-input {
  width: 100%;
  margin-top: 10px;
}

.empty-state {
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  padding: 16px 0 4px;
  display: none;
}

/* ---- Summary ---- */
.summary-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.summary-header h2 {
  font-size: 15px;
  margin: 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

#summaryText {
  width: 100%;
  resize: vertical;
  line-height: 1.5;
  white-space: pre;
}

/* ---- History ---- */
.history-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 12px;
}

.history-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-item summary::-webkit-details-marker { display: none; }

.history-title {
  font-weight: 600;
  font-size: 15px;
}

.history-date {
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.history-body {
  margin-top: 10px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.history-body pre {
  white-space: pre-wrap;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.5;
  margin: 0 0 10px;
}

.history-actions {
  display: flex;
  gap: 8px;
}

.history-actions button {
  flex: 1;
}

/* ---- Progression ---- */
.progression-select-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.progression-select-row label {
  font-size: 13px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

#progressionExercise { flex: 1; }

.progression-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.progression-row:last-child { border-bottom: none; }

.progression-date {
  color: var(--muted);
  font-size: 12px;
  flex: 0 0 90px;
}

.progression-sets {
  flex: 1;
  text-align: right;
  font-size: 14px;
}