:root {
  /* Dark palette (default) */
  --bg: #0f1115;
  --bg-inset: #0f1115;
  --bg-card: #1a1d24;
  --border: #2b2f38;
  --text: #e8e8e8;
  --text-muted: #9aa0a6;
  --text-faint: #6b7078;
  --text-on-accent: #ffffff;
  --accent: #4a90e2;
  --accent-selected-bg: #1e3a5f;
  --shadow: rgba(0, 0, 0, 0.4);

  --success: #8ae24a;
  --error: #e2734a;
  --warning: #e2c04a;

  --cat-push: #e2734a;
  --cat-pull: #4ac9e2;
  --cat-legs: #8ae24a;
  --cat-core: #e2c04a;
  --cat-cardio: #e24a6e;
  --cat-mobility: #a24ae2;
}

:root[data-theme="light"] {
  --bg: #f5f6f8;
  --bg-inset: #eef0f3;
  --bg-card: #ffffff;
  --border: #dfe2e7;
  --text: #1a1d24;
  --text-muted: #5c6169;
  --text-faint: #8b9099;
  --text-on-accent: #ffffff;
  --accent: #2f6fc7;
  --accent-selected-bg: #dbe9fb;
  --shadow: rgba(15, 17, 21, 0.15);

  --success: #2f8f3a;
  --error: #c1502a;
  --warning: #9c7a12;

  --cat-push: #c1502a;
  --cat-pull: #1d8fa8;
  --cat-legs: #2f8f3a;
  --cat-core: #9c7a12;
  --cat-cardio: #c22a52;
  --cat-mobility: #7a2fc1;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.2s ease, color 0.2s ease;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 16px 84px;
}

@media (max-width: 480px) {
  .app {
    padding-top: 58px;
  }
}

.disclaimer {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
}

.feedback-privacy-note {
  color: var(--text-faint);
  font-size: 11px;
  line-height: 1.4;
  margin: -6px 0 14px;
}

.progress-summary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 16px;
}

.progress-summary p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.progress-summary #streak-text {
  color: var(--warning);
  font-weight: 600;
  margin-top: 4px;
}

.progress-summary-actions {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.progress-summary-actions .text-btn {
  padding: 0;
  font-size: 12px;
}

#last-workout-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#last-workout-list.hidden {
  display: none;
}

.progress-summary #workouts-badge-text {
  color: var(--success);
  font-weight: 600;
  margin-top: 4px;
}

#history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}

.history-date {
  margin: 0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}

.history-summary-text {
  margin: 4px 0 0;
  font-size: 14px;
  color: var(--text);
}

.history-exercise-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-exercise-list.hidden {
  display: none;
}

#last-workout-list .exercise-item {
  padding: 10px;
}

.done-indicator {
  flex-shrink: 0;
  font-size: 16px;
  width: 20px;
  text-align: center;
  color: var(--text-faint);
}

.exercise-item.done .done-indicator {
  color: var(--accent);
}

.lang-switcher,
.theme-switcher {
  position: fixed;
  top: 14px;
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
  z-index: 50;
}

.lang-switcher {
  right: 14px;
}

.theme-switcher {
  left: 14px;
}

.lang-btn,
.theme-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
}

.lang-btn:hover,
.theme-btn:hover {
  color: var(--text);
}

.lang-btn.active,
.theme-btn.active {
  background: var(--accent);
  color: var(--text-on-accent);
}

header {
  text-align: center;
  margin-bottom: 32px;
}

h1 {
  font-size: 28px;
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-muted);
  margin: 0;
  font-size: 14px;
}

.field-group {
  margin-bottom: 28px;
}

.field-group h2 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 0 0 10px;
}

.optional-tag {
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
}

.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.option-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 16px 12px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.option-btn:hover {
  border-color: var(--accent);
}

.option-btn.selected {
  background: var(--accent-selected-bg);
  border-color: var(--accent);
  color: var(--text);
}

#generate-btn {
  width: 100%;
  padding: 16px;
  margin-top: 8px;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  color: var(--text-on-accent);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

#generate-btn:disabled {
  background: var(--border);
  color: var(--text-faint);
  cursor: not-allowed;
}

.or-divider {
  text-align: center;
  color: var(--text-faint);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 14px 0;
}

.secondary-btn {
  width: 100%;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}

.secondary-btn:hover {
  border-color: var(--accent);
}

.hidden {
  display: none;
}

#workout-summary {
  font-size: 20px;
  margin: 0 0 4px;
}

.workout-note {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 6px;
}

.workout-progress {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 20px;
}

#workout-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exercise-item {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 14px;
}

.exercise-item.category-push { border-left-color: var(--cat-push); }
.exercise-item.category-pull { border-left-color: var(--cat-pull); }
.exercise-item.category-legs { border-left-color: var(--cat-legs); }
.exercise-item.category-core { border-left-color: var(--cat-core); }
.exercise-item.category-cardio { border-left-color: var(--cat-cardio); }
.exercise-item.category-mobility { border-left-color: var(--cat-mobility); }

.exercise-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.exercise-item input[type="checkbox"] {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  accent-color: var(--accent);
}

.exercise-icon {
  font-size: 20px;
  flex-shrink: 0;
  line-height: 1;
}

.exercise-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  cursor: pointer;
  flex: 1;
}

.info-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
}

.info-btn.active,
.info-btn:hover {
  color: var(--accent);
}

.swap-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 15px;
  cursor: pointer;
  padding: 4px;
}

.swap-btn:hover {
  color: var(--accent);
}

.exercise-description {
  margin: 10px 0 0 34px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
}

.performance-row {
  margin: 10px 0 0 34px;
}

.last-performance-hint {
  margin: 0 0 6px;
  font-size: 12px;
  color: var(--accent);
}

.last-performance-hint.hidden {
  display: none;
}

.performance-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
}

.performance-at {
  color: var(--text-faint);
  font-size: 13px;
}

.performance-input {
  width: 64px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 6px 8px;
  font-size: 13px;
  font-family: inherit;
}

.performance-input-narrow {
  width: 48px;
}

.exercise-name {
  font-size: 15px;
  font-weight: 500;
}

.exercise-detail {
  font-size: 13px;
  color: var(--text-muted);
}

.exercise-item.done .exercise-name,
.exercise-item.done .exercise-detail {
  text-decoration: line-through;
  color: var(--text-faint);
}

#back-btn {
  width: 100%;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 15px;
  cursor: pointer;
}

.text-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  padding: 4px;
}

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

.library-header h2 {
  font-size: 18px;
  margin: 0;
}

#library-search {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 10px;
}

.library-filter-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}

.library-filter-row select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 13px;
  font-family: inherit;
}

#library-results {
  list-style: none;
  margin: 0 0 8px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 320px;
  overflow-y: auto;
}

#library-empty {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  margin: 12px 0 24px;
}

.library-plan-section {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.library-plan-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.library-plan-header h2 {
  font-size: 15px;
  margin: 0;
}

#library-plan-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-detail-input {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  padding: 6px 8px;
  font-size: 13px;
  font-family: inherit;
  margin-top: 2px;
}

#library-start-btn {
  width: 100%;
  padding: 16px;
  background: var(--accent);
  border: none;
  border-radius: 10px;
  color: var(--text-on-accent);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}

#library-start-btn:disabled {
  background: var(--border);
  color: var(--text-faint);
  cursor: not-allowed;
}

#feedback-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 4px 12px var(--shadow);
}

#feedback-btn:hover {
  border-color: var(--accent);
}

#feedback-overlay,
#picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

#feedback-overlay.hidden,
#picker-overlay.hidden {
  display: none;
}

.picker-modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  max-width: 420px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}

.picker-modal h2 {
  margin: 0 0 14px;
  font-size: 17px;
  padding-right: 20px;
}

#picker-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

#picker-search {
  width: 100%;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 14px;
}

#picker-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.picker-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}

.picker-item-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.picker-item-name {
  font-size: 14px;
  font-weight: 500;
}

.picker-item-desc {
  font-size: 12px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.picker-use-btn {
  flex-shrink: 0;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: var(--text-on-accent);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 12px;
  cursor: pointer;
}

#picker-empty {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  margin: 12px 0 0;
}

.feedback-modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  max-width: 400px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}

.feedback-modal h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.feedback-intro {
  color: var(--text-muted);
  font-size: 13px;
  margin: 0 0 16px;
}

#feedback-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.feedback-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
}

#feedback-form textarea,
#feedback-form input[type="email"] {
  width: 100%;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  margin-bottom: 12px;
}

#feedback-form textarea {
  min-height: 50px;
  resize: vertical;
}

#feedback-form button[type="submit"] {
  width: 100%;
  padding: 12px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: var(--text-on-accent);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

#feedback-success {
  color: var(--success);
  font-size: 14px;
  text-align: center;
}

#feedback-error {
  color: var(--error);
  font-size: 14px;
  text-align: center;
}