:root {
  --bg-main: #090e1a;
  --bg-card: #131c31;
  --bg-card-hover: #192540;
  --bg-elevated: #1e293b;
  --bg-input: #0b1120;
  --border-color: #293751;
  --text-main: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-green: #10b981;
  --accent-green-hover: #059669;
  --accent-blue: #38bdf8;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.45);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  padding-bottom: 100px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 14, 26, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

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

.brand-badge {
  background: linear-gradient(135deg, var(--accent-green), #047857);
  color: #022c22;
  font-weight: 900;
  font-size: 0.78rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.brand-title {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.3px;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mode-tabs {
  display: flex;
  background: var(--bg-card);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  gap: 4px;
}

.mode-tab {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.18s ease;
}

.mode-tab.active {
  background: var(--accent-blue);
  color: #082f49;
}

/* Views */
.view-section {
  display: none;
  padding-top: 18px;
}

.view-section.active {
  display: block;
}

/* ==================== SCIENCE & GOAL SETTINGS PANEL ==================== */
.science-settings-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  margin-bottom: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.control-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-blue);
  margin-bottom: 8px;
  letter-spacing: 0.2px;
}

.split-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 6px;
}

.science-recommend-tag {
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.goal-pill-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
}

.goal-pill {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.goal-pill:hover {
  border-color: var(--accent-blue);
  transform: translateY(-1px);
}

.goal-pill.active {
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.35);
}

.goal-pill-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.goal-pill-content {
  flex: 1;
}

.goal-pill-title {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.goal-pill.active .goal-pill-title {
  color: var(--accent-blue);
}

.goal-pill-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 3px;
  line-height: 1.35;
}

/* Split Toggle Group */
.split-toggle-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 8px;
}

.split-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

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

.split-btn.active {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(16, 185, 129, 0.15));
  border-color: var(--accent-blue);
  color: #fff;
}

.badge-rec {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.4);
  white-space: nowrap;
}

/* Science Coach Card */
.science-coach-card {
  margin-top: 14px;
  background: rgba(11, 17, 32, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-md);
  padding: 14px;
}

.coach-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(41, 55, 81, 0.6);
}

.coach-goal-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 6px;
}

.science-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
  margin: 10px 0;
}

.metric-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  text-align: center;
}

.metric-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.metric-val {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--accent-blue);
  margin-top: 2px;
}

.coach-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  font-size: 0.78rem;
}

.coach-detail-item {
  background: rgba(30, 41, 59, 0.5);
  border-left: 3px solid var(--accent-blue);
  padding: 8px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  line-height: 1.45;
}

.coach-detail-item strong {
  color: #fff;
}

.coach-detail-item.warning {
  border-left-color: var(--accent-amber);
  background: rgba(245, 158, 11, 0.08);
}

.coach-detail-item.warning strong {
  color: var(--accent-amber);
}

.brand-chip {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.3);
  margin-right: 6px;
}

.rir-chip {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(168, 85, 247, 0.18);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.35);
  margin-left: 6px;
}

.tips-box {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.78rem;
  color: #a7f3d0;
  margin-top: 6px;
  line-height: 1.4;
}

.tips-box strong {
  color: #34d399;
}

/* Day Selector Strip */
.day-selector {
  display: grid;
  grid-template-columns: repeat(7, minmax(95px, 1fr));
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  margin-bottom: 16px;
}

.day-pill {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 8px;
  border-radius: var(--radius-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.day-pill:hover {
  border-color: var(--accent-blue);
}

.day-pill.active {
  background: linear-gradient(160deg, #0284c7, #0369a1);
  border-color: var(--accent-blue);
  color: #fff;
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.25);
}

.day-pill-name {
  font-weight: 800;
  font-size: 0.88rem;
}

.day-pill-tag {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.day-pill.active .day-pill-tag {
  color: #e0f2fe;
}

/* Day Banner */
.day-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  margin-bottom: 18px;
}

.day-banner-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.day-type-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 99px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  margin-bottom: 6px;
}

.day-title {
  font-size: 1.2rem;
  font-weight: 800;
}

.day-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

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

.btn-secondary,
.btn-ghost {
  border: 1px solid var(--border-color);
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--accent-blue);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}

.btn-ghost:hover {
  color: var(--text-main);
  border-color: var(--text-muted);
}

.progress-wrap {
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.progress-bar-bg {
  height: 8px;
  background: var(--bg-input);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transition: width 0.25s ease;
}

/* Exercise Card */
.exercise-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.exercise-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.exercise-card.all-sets-done {
  border-color: var(--accent-green);
}

.exercise-top {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: 16px;
  padding: 16px;
}

.dual-thumb-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: 290px;
  height: 175px;
}

.thumb-box {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #090e1a;
  border: 1px solid var(--border-color);
  cursor: zoom-in;
  height: 100%;
}

.thumb-box img,
.exercise-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.25s ease;
}

.thumb-box:hover img {
  transform: scale(1.05);
}

.photo-badge {
  position: absolute;
  top: 6px;
  left: 6px;
  background: rgba(9, 14, 26, 0.9);
  font-weight: 800;
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.2px;
}

.photo-badge.real-badge {
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.4);
}

.photo-badge.ref-badge {
  color: var(--accent-green);
  border: 1px solid rgba(52, 211, 153, 0.4);
}

.zoom-hint {
  position: absolute;
  bottom: 5px;
  right: 5px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 0.65rem;
  padding: 2px 5px;
  border-radius: 4px;
}

.exercise-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exercise-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}

.exercise-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  margin-bottom: 4px;
}

.target-chip {
  display: inline-block;
  background: rgba(56, 189, 248, 0.14);
  color: var(--accent-blue);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
}

.swapped-chip {
  display: inline-block;
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 4px;
}

.exercise-technical-title,
.catalog-technical-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #f8fafc;
  line-height: 1.3;
  margin-top: 4px;
  margin-bottom: 2px;
  letter-spacing: -0.2px;
}

.exercise-vietnamese-subtitle,
.catalog-vietnamese-subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: #94a3b8;
  margin-bottom: 6px;
  line-height: 1.4;
}

.exercise-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
}

.visual-cue {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.visual-cue strong {
  color: var(--accent-amber);
}

.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2px;
}

.btn-swap {
  background: rgba(245, 158, 11, 0.16);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.45);
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-swap:hover {
  background: var(--accent-amber);
  color: #000;
}

.btn-yt {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(239, 68, 68, 0.16);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
}

.btn-yt:hover {
  background: var(--accent-red);
  color: #fff;
}

.steps-box {
  background: var(--bg-input);
  border-left: 3px solid var(--accent-blue);
  padding: 10px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.steps-box ol {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.slot-note {
  font-size: 0.78rem;
  color: var(--accent-green);
}

/* Sets Logger Table */
.sets-section {
  background: rgba(11, 17, 32, 0.65);
  border-top: 1px solid var(--border-color);
  padding: 12px 16px;
}

.sets-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.sets-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.set-row {
  display: grid;
  grid-template-columns: 64px 1fr 1fr 110px;
  gap: 8px;
  align-items: center;
  background: var(--bg-card);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.set-row.done {
  background: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.4);
}

.set-num {
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.set-input-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.set-input {
  width: 100%;
  max-width: 90px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  text-align: center;
}

.set-input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.unit-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-set-done {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
}

.btn-set-done.is-done {
  background: var(--accent-green);
  color: #022c22;
  border-color: var(--accent-green);
}

/* Catalog Grid */
.catalog-toolbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cat-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 7px 13px;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.cat-btn.active {
  background: var(--accent-green);
  color: #022c22;
  border-color: var(--accent-green);
}

.search-box input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 11px 14px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-blue);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 16px;
}

.catalog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.catalog-img-wrap,
.catalog-dual-thumb {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  position: relative;
  height: 200px;
  background: #090e1a;
  cursor: zoom-in;
}

.catalog-thumb-box {
  position: relative;
  height: 100%;
  overflow: hidden;
}

.catalog-thumb-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s ease;
}

.catalog-dual-thumb:hover .catalog-thumb-box img {
  transform: scale(1.05);
}

.catalog-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.alt-tags {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border-color);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.secondary-equip-box {
  margin-top: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.secondary-equip-box h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--accent-blue);
}

.secondary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.secondary-item {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

/* Sticky Rest Timer Bar */
.rest-timer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 80;
  background: linear-gradient(90deg, #065f46, #047857);
  border-top: 2px solid var(--accent-green);
  padding: 10px 0;
  box-shadow: 0 -8px 25px rgba(0, 0, 0, 0.5);
}

.hidden {
  display: none !important;
}

.timer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.timer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.timer-pulse {
  font-size: 1.3rem;
}

.timer-label {
  font-size: 0.75rem;
  color: #a7f3d0;
  font-weight: 700;
}

.timer-countdown {
  font-size: 1.35rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.1;
}

.timer-controls {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.timer-btn {
  background: rgba(0, 0, 0, 0.3);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
}

.timer-btn-danger {
  background: rgba(239, 68, 68, 0.85);
  border-color: transparent;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.78);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-card,
.lightbox-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.lightbox-card {
  max-width: 820px;
}

.modal-header,
.lightbox-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
}

.swap-badge {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent-amber);
}

.modal-close {
  background: var(--bg-elevated);
  color: var(--text-main);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-weight: 800;
  cursor: pointer;
}

.modal-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.swap-option-card {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 12px;
  align-items: center;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 10px;
  border-radius: var(--radius-md);
}

.swap-option-card.is-current {
  border-color: var(--accent-green);
}

.swap-thumb-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  width: 124px;
}

.swap-thumb-pair img {
  width: 100%;
  height: 76px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.swap-technical-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #f8fafc;
  line-height: 1.3;
}

.swap-vietnamese-subtitle {
  font-size: 0.8rem;
  font-weight: 600;
  color: #94a3b8;
  margin-bottom: 2px;
}

.btn-select-swap {
  background: var(--accent-green);
  color: #022c22;
  border: none;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.8rem;
  cursor: pointer;
}

.lightbox-card {
  max-width: 920px;
}

.lightbox-body {
  padding: 16px;
  text-align: center;
}

.lightbox-dual-view {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 12px;
}

.lightbox-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

.lightbox-item-label {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent-blue);
  letter-spacing: 0.3px;
}

.lightbox-item:nth-child(2) .lightbox-item-label {
  color: var(--accent-green);
}

.lightbox-item img,
.lightbox-body img {
  width: 100%;
  max-height: 60vh;
  object-fit: contain;
  background: #000;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.lightbox-caption {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .exercise-top {
    grid-template-columns: 1fr;
  }
  .dual-thumb-grid {
    width: 100%;
    height: 180px;
  }
  .set-row {
    grid-template-columns: 46px 1fr 1fr 86px;
    padding: 6px;
  }
  .swap-option-card {
    grid-template-columns: 120px 1fr;
  }
  .swap-option-card .btn-select-swap {
    grid-column: 1 / -1;
    width: 100%;
  }
  .lightbox-dual-view {
    grid-template-columns: 1fr;
  }
}

/* ==================== ATHLETIC 2-STEP WORKOUT SCREEN FLOW ==================== */
.workout-step-screen {
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.workout-step-screen.hidden {
  display: none !important;
}

.step-hero {
  margin-bottom: 16px;
}

.step-badge {
  display: inline-block;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.28);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.step-hero-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.3px;
  margin-bottom: 4px;
}

.step-hero-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.step-action-bar {
  margin-top: 20px;
  margin-bottom: 16px;
}

.btn-start-workout {
  width: 100%;
  background: var(--accent-green);
  color: #022c22;
  font-size: 1.05rem;
  font-weight: 800;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.35);
  transition: all 0.18s ease;
}

.btn-start-workout:hover {
  background: var(--accent-green-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.45);
}

.btn-start-workout .arrow-icon {
  font-size: 1.25rem;
  transition: transform 0.18s ease;
}

.btn-start-workout:hover .arrow-icon {
  transform: translateX(4px);
}

/* Session Topbar in Step 2 */
.session-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.btn-back-setup {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-back-setup:hover {
  border-color: var(--accent-blue);
  color: var(--text-main);
  background: var(--bg-card-hover);
}

.active-goal-chip {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.28);
  color: var(--accent-green);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.active-chip-divider {
  opacity: 0.5;
}

.active-chip-split {
  color: var(--text-secondary);
  font-weight: 600;
}

/* Day Pills distinction */
.day-pill.is-workout {
  border: 1px solid var(--border-color);
}

.day-pill.is-workout.active {
  border: 2px solid var(--accent-green);
  background: rgba(16, 185, 129, 0.16);
  color: var(--text-main);
}

.day-pill.is-rest {
  border: 1px dashed rgba(148, 163, 184, 0.35);
  opacity: 0.85;
}

.day-pill.is-rest.active {
  border: 2px solid var(--accent-blue);
  background: rgba(56, 189, 248, 0.16);
  color: var(--text-main);
  opacity: 1;
}

.day-session-num {
  background: var(--accent-green);
  color: #022c22;
  font-size: 0.65rem;
  font-weight: 900;
  padding: 1px 5px;
  border-radius: 3px;
  margin-right: 4px;
}

/* Rest & Recovery Card */
.rest-day-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 20px;
  text-align: center;
  margin: 16px 0;
  box-shadow: var(--shadow-lg);
}

.rest-pill-badge {
  display: inline-block;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.rest-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.rest-card-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 18px;
  line-height: 1.6;
}

.rest-card-advice {
  background: rgba(11, 17, 32, 0.65);
  border-left: 3px solid var(--accent-green);
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  text-align: left;
  max-width: 620px;
  margin: 0 auto 22px;
}

.advice-header {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent-green);
  margin-bottom: 4px;
}

.advice-body {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.rest-card-action {
  margin-top: 12px;
}

.action-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.btn-jump-next-workout {
  background: var(--accent-green);
  color: #022c22;
  font-size: 0.92rem;
  font-weight: 800;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.18s ease;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-jump-next-workout:hover {
  background: var(--accent-green-hover);
  transform: translateY(-1px);
}