/* Google Fonts import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Custom Variables */
:root {
  --bg-primary: #070a13;
  --bg-secondary: #0c1122;
  --bg-panel: rgba(18, 25, 47, 0.7);
  --bg-panel-hover: rgba(25, 34, 64, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 255, 0.15);
  
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-dark: #0f172a;
  
  --color-primary: #00e5ff; /* Cyan for scientific/neutral */
  --color-work: #ff3366;    /* Crimson Red for high intensity work */
  --color-rest: #00e676;    /* Emerald Green for active/passive recovery */
  --color-vo2: #d500f9;     /* Vibrant Purple for VO2 kinetics */
  --color-wprime: #ffab00;  /* Gold/Amber for W' depletion */
  --color-info: #2979ff;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 15px rgba(0, 229, 255, 0.2);
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(13, 27, 63, 0.5) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(255, 51, 102, 0.05) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(0, 229, 255, 0.05) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* App Layout */
#app-view {
  display: block !important;
  width: 100% !important;
  min-height: 100vh !important;
}

.app-container {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
  background-color: rgba(8, 12, 24, 0.95);
  border-right: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-work), var(--color-primary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--bg-primary);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.3);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(to right, #ffffff, var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: -0.25rem;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-grow: 1;
}

.nav-btn {
  width: 100%;
  padding: 0.85rem 1rem;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  text-align: left;
  transition: all var(--transition-fast);
}

.nav-btn svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.nav-btn:hover {
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--color-text);
}

.nav-btn:hover svg {
  transform: translateX(3px);
}

.nav-btn.active {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(255, 51, 102, 0.05));
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
  font-weight: 600;
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
}

.sidebar-footer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  text-align: center;
}

/* Main Content Area */
.main-content {
  padding: 2rem 3rem;
  overflow-y: auto;
  height: 100vh;
}

/* Header styling */
.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.header-title h2 {
  font-size: 2rem;
  color: #fff;
  margin-bottom: 0.25rem;
}

.header-title p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* Glassmorphism Cards */
.card {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

.card-title {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title svg {
  color: var(--color-primary);
}

/* Row wrapper to place card-title alongside selector button */
.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 0.75rem;
}

/* Always-visible "Selecionar Protocolo" button (Single Mode) */
.btn-select-proto {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: rgba(0, 229, 255, 0.07);
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 8px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-select-proto:hover {
  background: rgba(0, 229, 255, 0.14);
  border-color: rgba(0, 229, 255, 0.5);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.12);
}

/* Hide single-mode button in comparison mode */
.comparison-active .btn-select-proto {
  display: none;
}

/* Selected protocol name badge */
.selected-proto-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 8px;
  font-size: 0.8rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  font-weight: 500;
}

.selected-proto-badge svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

.selected-proto-badge span {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.clear-proto-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 0 0.2rem;
  line-height: 1;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.clear-proto-btn:hover {
  color: var(--color-work);
}


/* Forms and Inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
}

.input-ctrl, select, textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: rgba(8, 12, 24, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.input-ctrl:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.25);
  background-color: rgba(8, 12, 24, 0.8);
}

/* Custom Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #00b0ff);
  color: var(--color-text-dark);
  box-shadow: 0 4px 14px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.5);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
  background-color: rgba(239, 68, 68, 0.35);
  border-color: rgba(239, 68, 68, 0.6);
}

.btn-action {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  border-radius: 6px;
}

/* Tabs Panel visibility toggler */
.tab-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tab Simulator Layout */
.simulator-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  align-items: start;
}

/* Configuration panel inside Simulator */
.config-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.intensity-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.intensity-badge.work {
  background-color: rgba(255, 51, 102, 0.15);
  color: var(--color-work);
  border: 1px solid rgba(255, 51, 102, 0.3);
}

.intensity-badge.rest {
  background-color: rgba(0, 230, 118, 0.15);
  color: var(--color-rest);
  border: 1px solid rgba(0, 230, 118, 0.3);
}

/* Interactive Timeline Builder */
.intervals-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
  max-height: 250px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.interval-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  animation: slideIn var(--transition-fast) ease;
}

.interval-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.interval-indicator {
  width: 8px;
  height: 35px;
  border-radius: 4px;
}

.interval-indicator.work {
  background-color: var(--color-work);
}

.interval-indicator.recovery {
  background-color: var(--color-rest);
}

.interval-details div {
  font-size: 0.85rem;
  font-weight: 600;
}

.interval-details span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Visualization Display Grid */
.display-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.25rem;
}

.stat-card {
  background-color: rgba(16, 22, 38, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.stat-card.stat-work::before { background-color: var(--color-work); }
.stat-card.stat-hr::before { background-color: var(--color-primary); }
.stat-card.stat-vo2::before { background-color: var(--color-vo2); }
.stat-card.stat-wprime::before { background-color: var(--color-wprime); }

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.stat-val {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}

.stat-unit {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-left: 0.25rem;
}

.stat-sublabel {
  font-size: 0.68rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  opacity: 0.8;
}

.help-tooltip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  margin-left: 0.25rem;
  opacity: 0.5;
  cursor: help;
  transition: opacity var(--transition-fast);
}

.help-tooltip:hover {
  opacity: 1;
}


.chart-container {
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  height: 400px;
  position: relative;
}

/* Calculator Grid */
.calculator-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  align-items: start;
}

.zones-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.zone-row {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  padding: 0.75rem 1rem;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.9rem;
}

.zone-tag {
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  width: max-content;
}

.zone-1 { background-color: rgba(148, 163, 184, 0.15); color: #cbd5e1; }
.zone-2 { background-color: rgba(0, 230, 118, 0.15); color: var(--color-rest); }
.zone-3 { background-color: rgba(255, 145, 0, 0.15); color: var(--color-wprime); }
.zone-4 { background-color: rgba(255, 51, 102, 0.15); color: var(--color-work); }
.zone-5 { background-color: rgba(213, 0, 249, 0.15); color: var(--color-vo2); }

.zone-desc {
  color: var(--color-text-muted);
}

.zone-val {
  text-align: right;
  font-weight: 600;
  color: #fff;
}

/* Literature Search & Notes Styles */
.lit-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.search-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.papers-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.paper-card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  transition: all var(--transition-fast);
}

.paper-card:hover {
  border-color: rgba(0, 229, 255, 0.3);
  background-color: rgba(255, 255, 255, 0.04);
}

.paper-title {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.paper-authors {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.paper-abstract {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

.paper-abstract.expanded {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
}

.paper-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 0.75rem;
}

.paper-tags {
  display: flex;
  gap: 0.5rem;
}

.paper-tag {
  background-color: rgba(0, 229, 255, 0.1);
  color: var(--color-primary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* Notebook styles */
.notebook-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.notes-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: 500px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.note-card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
}

.note-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.note-title {
  font-weight: 600;
  color: #fff;
}

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

.note-content {
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  white-space: pre-wrap;
}

.note-ref-paper {
  font-size: 0.8rem;
  background-color: rgba(255, 255, 255, 0.05);
  border-left: 2px solid var(--color-primary);
  padding: 0.4rem 0.6rem;
  border-radius: 0 4px 4px 0;
  margin-bottom: 0.75rem;
}

/* Protocol Presets Library Grid */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}

.preset-card {
  background-color: rgba(16, 22, 38, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.preset-card:hover {
  border-color: rgba(0, 229, 255, 0.3);
  transform: translateY(-2px);
}

.preset-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.25rem;
}

.preset-author {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.preset-details {
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.preset-detail-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
  padding-bottom: 0.2rem;
}

.preset-detail-item span:first-child {
  color: var(--color-text-muted);
}

.preset-detail-item span:last-child {
  font-weight: 600;
}

/* Utility Animations & Helper Classes */
@keyframes slideIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }

.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--color-text-muted);
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.01);
}

.empty-state svg {
  width: 40px;
  height: 40px;
  margin-bottom: 1rem;
  color: var(--color-text-muted);
  opacity: 0.5;
}

/* Spinner for loading state */
.spinner {
  border: 3px solid rgba(255, 255, 255, 0.1);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border-left-color: var(--color-primary);
  animation: spin 1s linear infinite;
  margin: 2rem auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Custom Notifications */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--color-primary);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-lg);
  color: #fff;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideInUp 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

@keyframes slideInUp {
  from { transform: translateY(100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Media Queries for Responsiveness */
@media (max-width: 1024px) {
  .app-container {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    display: none;
  }
  
  .main-content {
    padding: 1.5rem;
  }
  
  .simulator-layout {
    grid-template-columns: 1fr;
  }
  
  .calculator-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   COMPARISON MODE STYLES
   ============================================================ */

/* --- Comparison Toggle Banner --- */
.comparison-toggle-banner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), rgba(255, 51, 102, 0.04));
  border: 1px solid rgba(0, 229, 255, 0.15);
  border-radius: 12px;
  cursor: pointer;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
  user-select: none;
}
.comparison-toggle-banner:hover {
  border-color: rgba(0, 229, 255, 0.35);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.12);
}
.comparison-toggle-banner.active {
  border-color: rgba(0, 229, 255, 0.5);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(255, 51, 102, 0.06));
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

/* Pill Toggle Switch */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}
.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}
.toggle-track {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 24px;
  transition: background var(--transition-normal);
  cursor: pointer;
}
.toggle-track::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}
.toggle-switch input:checked + .toggle-track {
  background: linear-gradient(90deg, var(--color-primary), var(--color-work));
}
.toggle-switch input:checked + .toggle-track::after {
  transform: translateX(20px);
  box-shadow: 0 1px 6px rgba(0, 229, 255, 0.5);
}

.toggle-label {
  flex: 1;
}
.toggle-label strong {
  display: block;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-heading);
}
.toggle-label small {
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

/* A/B pill sub-tabs inside the protocol card */
.protocol-ab-tabs {
  display: none;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding: 0.4rem;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
}
.protocol-ab-tabs.visible {
  display: flex;
}
.ab-tab-btn {
  flex: 1;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 7px;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}
.ab-tab-btn .ab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
}
.ab-tab-btn.tab-a.active {
  background: rgba(0, 229, 255, 0.15);
  color: var(--color-primary);
}
.ab-tab-btn.tab-a .ab-badge { background: var(--color-primary); color: #000; }
.ab-tab-btn.tab-b.active {
  background: rgba(255, 51, 102, 0.15);
  color: var(--color-work);
}
.ab-tab-btn.tab-b .ab-badge { background: var(--color-work); color: #fff; }

/* Comparison chart metric selector */
.comparison-metric-selector {
  display: none;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.75rem;
  background: rgba(0,0,0,0.25);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.comparison-metric-selector.visible {
  display: flex;
}
.comparison-metric-selector label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  font-weight: 500;
}
.comparison-metric-selector select {
  flex: 1;
  background: var(--bg-secondary);
  color: var(--color-text);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  font-family: var(--font-body);
  cursor: pointer;
}

/* Dual-value stat display inside stat cards */
.stat-val-dual {
  display: flex;
  gap: 0.4rem;
  align-items: baseline;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-heading);
}
.stat-val-dual .val-a { color: var(--color-primary); }
.stat-val-dual .val-b { color: var(--color-work); }
.stat-val-dual .divider {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 400;
}

/* Protocol Benefits Panel in Physiological Insights */
.insights-benefits-panel {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.insights-proto-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.07);
  padding-bottom: 0.75rem;
}

.insights-proto-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.insights-proto-goal {
  font-size: 0.8rem;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.2);
  color: var(--color-primary);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  font-weight: 500;
}

.insights-benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.insights-benefit-tag {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px solid;
  font-size: 0.82rem;
  font-weight: 500;
  transition: transform var(--transition-fast) ease;
}

.insights-benefit-tag:hover {
  transform: translateY(-2px);
}

.benefit-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.benefit-label {
  line-height: 1.2;
}

.insights-audience {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.insights-audience strong {
  color: #fff;
}

.insights-audience-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.insights-ref {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: right;
  font-style: italic;
}

.insights-divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 1.5rem 0 1rem 0;
}

.insights-divider::before,
.insights-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.insights-divider:not(:empty)::before {
  margin-right: .75em;
}

.insights-divider:not(:empty)::after {
  margin-left: .75em;
}

/* Delta Insights Panel */
.delta-insights-panel {
  display: none;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.04), rgba(255, 51, 102, 0.04));
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-top: 1rem;
}
.delta-insights-panel.visible {
  display: block;
}
.delta-insights-panel h4 {
  font-size: 0.85rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.delta-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}
.delta-row:last-child { border-bottom: none; }
.delta-row .delta-metric { flex: 1; }
.delta-row .delta-a { color: var(--color-primary); font-weight: 600; min-width: 65px; text-align: right; }
.delta-row .delta-b { color: var(--color-work); font-weight: 600; min-width: 65px; text-align: right; }
.delta-row .delta-winner {
  font-size: 0.68rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
  min-width: 28px;
  text-align: center;
}
.delta-winner.winner-a { background: rgba(0, 229, 255, 0.15); color: var(--color-primary); }
.delta-winner.winner-b { background: rgba(255, 51, 102, 0.15); color: var(--color-work); }
.delta-winner.winner-tie { background: rgba(255,255,255,0.08); color: var(--color-text-muted); }

/* ============================================================
   PROTOCOL PICKER MODAL
   ============================================================ */

/* Load-from-library bar (below A/B tabs) */
.load-from-library-bar {
  display: none;
  margin-bottom: 1rem;
}
.protocol-ab-tabs.visible ~ .load-from-library-bar,
#load-from-library-bar.visible {
  display: block;
}
.btn-load-from-lib {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: transparent;
  border: 1px dashed rgba(0, 229, 255, 0.3);
  border-radius: 8px;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  justify-content: center;
}
.btn-load-from-lib:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.6);
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.15);
}

/* Modal overlay */
.proto-picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 18, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.proto-picker-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.proto-picker-modal {
  background: var(--bg-secondary);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 18px;
  width: 90%;
  max-width: 560px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 60px rgba(0,0,0,0.7), 0 0 40px rgba(0, 229, 255, 0.08);
  transform: translateY(16px) scale(0.97);
  transition: transform var(--transition-normal);
  overflow: hidden;
}
.proto-picker-overlay.open .proto-picker-modal {
  transform: translateY(0) scale(1);
}

.proto-picker-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}
.proto-picker-header h3 {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 0.2rem;
}
.proto-picker-header p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}
.proto-picker-header strong {
  color: var(--color-primary);
}

.proto-picker-close {
  background: rgba(255,255,255,0.06);
  border: none;
  border-radius: 8px;
  padding: 0.4rem;
  cursor: pointer;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.proto-picker-close:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}

.proto-picker-search {
  position: relative;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}
.picker-search-icon {
  position: absolute;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--color-text-muted);
  pointer-events: none;
}
.proto-picker-search .input-ctrl {
  padding-left: 2.2rem;
  background: rgba(0,0,0,0.3);
}

.proto-picker-categories {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.15);
  flex-shrink: 0;
  overflow-x: auto;
}

.picker-cat-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 0.35rem 0.75rem;
  font-size: 0.73rem;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.picker-cat-btn:hover {
  background: rgba(0, 229, 255, 0.05);
  color: var(--color-primary);
  border-color: rgba(0, 229, 255, 0.3);
}

.picker-cat-btn.active {
  background: rgba(0, 229, 255, 0.12);
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.15);
}


.proto-picker-body {
  overflow-y: auto;
  flex: 1;
  padding: 1rem 1.5rem 1.5rem;
}

.proto-picker-section {
  margin-bottom: 1.5rem;
}
.proto-picker-section:last-child { margin-bottom: 0; }

.proto-picker-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.6rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-color);
}

.proto-picker-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.picker-proto-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: rgba(255,255,255,0.02);
}
.picker-proto-row:hover {
  background: rgba(0, 229, 255, 0.07);
  border-color: rgba(0, 229, 255, 0.2);
}
.picker-proto-row:active {
  background: rgba(0, 229, 255, 0.14);
  transform: scale(0.99);
}
.picker-proto-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(213,0,249,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.75rem;
  color: var(--color-primary);
}
.picker-proto-info { flex: 1; }
.picker-proto-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  display: block;
}
.picker-proto-meta {
  font-size: 0.73rem;
  color: var(--color-text-muted);
}
.picker-proto-badge {
  font-size: 0.68rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: rgba(0,229,255,0.1);
  color: var(--color-primary);
  font-weight: 600;
  flex-shrink: 0;
}
.picker-proto-empty {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 1rem 0;
}

/* Scientific Interpretation Styles */
.interpretation-section {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.interpretation-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.interpretation-block {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--color-text);
  transition: transform var(--transition-fast);
}

.interpretation-block:hover {
  transform: translateX(2px);
}

.interpretation-block-header {
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.interpretation-block-text {
  margin: 0;
  color: var(--color-text-muted);
}

.interpretation-block-text strong {
  color: #fff;
}

.interpretation-highlight {
  background: rgba(0, 230, 118, 0.04);
  border-color: rgba(0, 230, 118, 0.2);
}

.interpretation-highlight .interpretation-block-text {
  color: #e2e8f0;
}

/* ==========================================================================
   PWA & MOBILE STYLES
   ========================================================================== */

/* Default hidden elements on Desktop */
.mobile-header {
  display: none;
}
.mobile-footer-rank-bar {
  display: none;
}
.mobile-nav {
  display: none;
}
.mobile-more-sheet {
  display: none;
}
.btn-pwa-install {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-info));
  color: var(--bg-primary);
  font-weight: 600;
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.2);
  transition: all var(--transition-fast);
}
.btn-pwa-install:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
}

/* Mobile Media Query */
@media (max-width: 900px) {
  /* Layout modifications */
  .app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }
  
  .sidebar {
    display: none !important;
  }
  
  .main-content {
    padding: 1rem 1rem 80px 1rem;
    height: auto;
    overflow-y: visible;
  }
  
  .content-header {
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
  }
  .content-header h2 {
    font-size: 1.3rem;
  }
  .content-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.85rem;
  }
  .gamified-stats-header {
    display: flex !important;
    margin-top: 0.35rem;
    width: 100%;
    gap: 0.35rem;
    flex-wrap: nowrap !important;
    justify-content: space-between;
    overflow-x: auto;
  }
  .academy-layout-grid {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }

  /* Grid Layout collapse */
  .simulator-layout,
  .calculator-grid,
  .notebook-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  
  .config-panel, 
  .display-panel {
    width: 100%;
  }

  /* Quick Stats Grid adjustments */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.25rem;
  }
  .stat-card {
    padding: 0.85rem 1rem;
  }
  .stat-val {
    font-size: 1.6rem;
  }
  
  /* Cards modifications */
  .card {
    padding: 1.25rem;
    margin-bottom: 1rem;
  }
  .card-title {
    font-size: 1.05rem;
    margin-bottom: 1rem;
  }
  
  /* Form components */
  .form-row {
    flex-direction: column;
    gap: 0;
  }
  .form-group {
    margin-bottom: 0.85rem;
  }
  
  /* Chart container size limit */
  .chart-container {
    height: 300px;
    padding: 0.75rem;
  }
  
  /* Mobile Header Styling */
  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    box-sizing: border-box;
    height: 60px;
    padding: 0 1rem;
    position: sticky;
    top: 0;
    background: rgba(8, 12, 24, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
  }
  .mobile-header .brand {
    margin-bottom: 0;
    gap: 0.5rem;
  }
  .mobile-header .brand-icon {
    width: 32px;
    height: 32px;
    font-size: 1.2rem;
    border-radius: 8px;
  }
  .mobile-header .brand-name {
    font-size: 1.05rem;
  }
  .mobile-header .brand-subtitle {
    font-size: 0.62rem;
    letter-spacing: 0.05em;
  }

  /* Mobile Bottom Navigation Styling */
  .mobile-footer-rank-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    bottom: 68px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 1.25rem);
    max-width: 480px;
    background: rgba(12, 16, 28, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 12px;
    padding: 0.45rem 0.85rem;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    transition: all 0.2s ease;
  }
  .mobile-footer-rank-bar:hover {
    border-color: var(--color-primary);
    transform: translateX(-50%) translateY(-2px);
  }
  .mobile-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 65px;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(8, 12, 24, 0.92);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid var(--border-color);
    z-index: 1000;
    padding: 0 0.25rem;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
  }
  .mobile-nav .nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    flex: 1;
    padding: 0.4rem 0;
    font-size: 0.65rem;
    font-family: var(--font-body);
    font-weight: 500;
    gap: 0.2rem;
    border-left: none !important;
    border-radius: 0;
    height: 100%;
    transition: all var(--transition-fast);
  }
  .mobile-nav .nav-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
  }
  .mobile-nav .nav-btn:hover svg {
    transform: none;
  }
  .mobile-nav .nav-btn.active {
    background: transparent;
    color: var(--color-primary);
    font-weight: 600;
    text-shadow: 0 0 8px rgba(0, 229, 255, 0.3);
  }
  .mobile-nav .nav-btn.active svg {
    transform: scale(1.1);
  }

  /* Bottom Sheet styling */
  .mobile-more-sheet {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
  }
  .mobile-more-sheet.open {
    opacity: 1;
    pointer-events: auto;
  }
  .mobile-more-sheet .sheet-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
  }
  .mobile-more-sheet .sheet-content {
    position: relative;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-radius: 20px 20px 0 0;
    padding: 1.5rem;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.6);
    z-index: 2001;
  }
  .mobile-more-sheet.open .sheet-content {
    transform: translateY(0);
  }
  .mobile-more-sheet .sheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
  }
  .mobile-more-sheet .sheet-header h4 {
    font-size: 1.1rem;
    color: #fff;
  }
  .mobile-more-sheet .sheet-close-btn {
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
  }
  .mobile-more-sheet .sheet-close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
  }
  .mobile-more-sheet .sheet-body {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-bottom: 1rem;
  }
  .mobile-more-sheet .sheet-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 0.9rem 1.25rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: left;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  .mobile-more-sheet .sheet-item svg {
    width: 22px;
    height: 22px;
    color: var(--color-primary);
    flex-shrink: 0;
  }
  .mobile-more-sheet .sheet-item-info {
    display: flex;
    flex-direction: column;
  }
  .mobile-more-sheet .sheet-item-info strong {
    font-size: 0.9rem;
    color: #fff;
  }
  .mobile-more-sheet .sheet-item-info p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 0.1rem;
  }
  .mobile-more-sheet .sheet-item:active {
    background: rgba(0, 229, 255, 0.1);
    border-color: var(--color-primary);
  }

  /* Protocol Picker Modal bottom sheet representation */
  .proto-picker-overlay {
    align-items: flex-end;
  }
  .proto-picker-modal {
    width: 100%;
    max-width: 100%;
    height: 80vh;
    margin: 0;
    border-radius: 20px 20px 0 0;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }
  
  /* Preset list scrolling on mobile */
  .proto-picker-body {
    max-height: calc(80vh - 180px);
  }
  
  .presets-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  /* Literature styling */
  .lit-layout {
    grid-template-columns: 1fr;
  }
  
  /* Custom scrollbars hidden or simplified on mobile */
  .proto-picker-categories::-webkit-scrollbar {
    display: none;
  }
  .proto-picker-categories {
    -ms-overflow-style: none;
    scrollbar-width: none;
  }
}

/* ==========================================================================
   WORKOUT TIMER STYLES
   ========================================================================== */
.workout-timer-card {
  transition: border-color var(--transition-normal);
}

.timer-bg-glow {
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 51, 102, 0.15) 0%, rgba(255, 51, 102, 0) 70%);
  filter: blur(20px);
  z-index: 1;
  pointer-events: none;
  transition: background var(--transition-normal);
}

.btn-timer-mute {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  cursor: pointer;
  z-index: 2;
  transition: all var(--transition-fast);
}
.btn-timer-mute:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: scale(1.05);
}

.timer-grid-layout {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.timer-circle-container {
  position: relative;
  width: 170px;
  height: 170px;
  flex-shrink: 0;
}

.timer-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.03);
  stroke-width: 6;
}

.timer-progress {
  fill: none;
  stroke: var(--color-work);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke var(--transition-normal);
}

.timer-numbers {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
}

.timer-phase-label {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-work);
  text-transform: uppercase;
  margin-bottom: 0.1rem;
  transition: color var(--transition-normal);
}

.timer-time-left {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2.1rem;
  color: #fff;
  line-height: 1.1;
  text-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.timer-next-info {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  max-width: 130px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.timer-stats-details {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.timer-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
}
.timer-stat-row:last-of-type {
  border-bottom: none;
}

.timer-stat-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.timer-stat-value {
  font-size: 0.9rem;
  color: #fff;
  font-weight: 600;
}

.timer-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

/* Responsive tweaks for Timer */
@media (max-width: 900px) {
  .timer-grid-layout {
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
  }
  .timer-circle-container {
    width: 180px;
    height: 180px;
  }
  .timer-stats-details {
    width: 100%;
  }
}

/* ======================================================== */
/* ==================== GAMIFICATION STYLES ================= */
/* ======================================================== */

/* Gamified Stats Header badges */
.gamified-stats-header {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}

.stat-badge, .heart-container {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.28rem 0.6rem;
  border-radius: 20px;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.stat-badge:hover, .heart-container:hover {
  border-color: var(--color-primary);
  background: rgba(88, 204, 2, 0.15);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(88, 204, 2, 0.2);
}

.stat-icon, .heart-icon {
  font-size: 0.95rem;
  line-height: 1;
}

.stat-value, .heart-value {
  color: #fff;
  font-weight: 800;
}

/* Sidebar profile card layout hover */
.sidebar-user-card {
  transition: all var(--transition-fast);
}
.sidebar-user-card:hover {
  border-color: var(--border-glow);
  background: rgba(255, 255, 255, 0.04) !important;
}

/* Academy Path and Map */
.academy-layout-grid {
  margin-bottom: 2rem;
}

.academy-module-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.module-info-banner {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(255, 51, 102, 0.03));
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem;
}

.module-index-tag {
  display: inline-block;
  font-size: 0.72rem;
  background: var(--color-primary);
  color: var(--bg-primary);
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.module-title {
  font-size: 1.25rem;
  color: #fff;
  font-weight: 700;
}

.module-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.academy-path {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  padding: 3rem 0;
  background: rgba(0, 0, 0, 0.12);
}

.academy-path::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 6px;
  background: rgba(255, 255, 255, 0.04);
  left: calc(50% - 3px);
  z-index: 1;
  border-radius: 3px;
}

.path-node-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
  width: 250px;
  text-align: center;
}

.path-node-wrapper.path-node-left {
  transform: translateX(-50px);
}

.path-node-wrapper.path-node-right {
  transform: translateX(50px);
}

.path-node-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 6px 0 rgba(0, 0, 0, 0.4);
}

.path-node-circle.locked {
  background: #151b2d;
  border: 3px solid #334155;
  color: #475569;
  cursor: not-allowed;
  box-shadow: 0 5px 0 rgba(0, 0, 0, 0.5);
}

.path-node-circle.unlocked {
  background: var(--color-primary);
  border: 3px solid #fff;
  color: var(--bg-primary);
  box-shadow: 0 6px 0 rgba(0, 184, 204, 0.8), 0 0 15px rgba(0, 229, 255, 0.3);
}

.path-node-circle.completed {
  background: var(--color-rest);
  border: 3px solid #fff;
  color: var(--bg-primary);
  box-shadow: 0 6px 0 rgba(0, 179, 88, 0.8), 0 0 15px rgba(0, 230, 118, 0.25);
}

.path-node-circle:hover {
  transform: scale(1.08);
}
.path-node-circle.unlocked:hover, .path-node-circle.completed:hover {
  transform: scale(1.08) translateY(-2px);
}

.path-node-circle.unlocked:active, .path-node-circle.completed:active {
  transform: scale(1.03) translateY(4px);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
}

.node-inner-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.node-inner-icon svg {
  width: 26px;
  height: 26px;
}

.crown-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  font-size: 1.25rem;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.path-node-lbl {
  margin-top: 0.75rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 0.5rem 0.85rem;
  border-radius: 12px;
  max-width: 220px;
  box-shadow: var(--shadow-sm);
  pointer-events: none;
}

.path-node-lbl h4 {
  font-size: 0.85rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.path-node-lbl p {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* Interactive Quiz Styling */
.quiz-container-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 0.85rem 1.25rem;
  border-radius: 16px;
}

.quiz-quit-btn {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  transition: color var(--transition-fast);
}

.quiz-quit-btn:hover {
  color: var(--color-work);
}

.quiz-progress-bar-bg {
  flex-grow: 1;
  height: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  overflow: hidden;
}

.quiz-progress-bar-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 6px;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.quiz-lives-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.quiz-badge-info {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--color-primary);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.15);
  padding: 0.2rem 0.6rem;
  border-radius: 10px;
  font-weight: bold;
}

.quiz-options-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quiz-opt-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.015);
  border: 2px solid var(--border-color);
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.quiz-opt-card:hover:not(.disabled) {
  border-color: var(--border-glow);
  background: rgba(255, 255, 255, 0.03);
}

.quiz-opt-card.selected {
  border-color: var(--color-primary);
  background: rgba(0, 229, 255, 0.05);
}

.quiz-opt-marker {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background: rgba(0,0,0,0.2);
}

.quiz-opt-card.selected .quiz-opt-marker {
  background: var(--color-primary);
  color: var(--bg-primary);
  border-color: var(--color-primary);
}

.quiz-opt-text {
  font-size: 0.92rem;
  font-weight: 500;
  color: #fff;
  line-height: 1.4;
}

.quiz-feedback {
  border-radius: 16px;
  padding: 1.25rem;
  animation: slideUp 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.quiz-feedback.correct {
  background: rgba(0, 230, 118, 0.08);
  border: 1px solid var(--color-rest);
  color: var(--color-rest);
}

.quiz-feedback.incorrect {
  background: rgba(255, 51, 102, 0.08);
  border: 1px solid var(--color-work);
  color: var(--color-work);
}

.feedback-content h4 {
  color: #fff;
}

.quiz-action-footer {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: 16px;
}

/* Animations */
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.shake-anim {
  animation: shake 0.4s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

/* Loja / Shop design */
.shop-item-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.shop-item-header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.shop-item-icon-box {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-card:hover {
  transform: translateY(-2px);
}
.theme-card.active {
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.25);
}

/* ======================================================== */
/* =================== THEME OVERRIDES ==================== */
/* ======================================================== */

/* Theme: EMERALD GREEN (Light Theme) */
body.theme-emerald {
  --bg-primary: #f7f7f7;
  --bg-secondary: #ffffff;
  --bg-panel: rgba(255, 255, 255, 0.95);
  --bg-panel-hover: rgba(240, 240, 240, 0.95);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-glow: rgba(88, 204, 2, 0.35);
  --color-text: #3c3c3c;
  --color-text-muted: #888888;
  --color-text-dark: #0f172a;
  
  --color-primary: #58cc02; /* Emerald Green */
  --color-work: #ff4b4b;    /* Orange/Red */
  --color-rest: #58cc02;    /* Green */
  --color-vo2: #1cb0f6;     /* Blue */
  --color-wprime: #ff9600;  /* Orange */
  --color-info: #1cb0f6;
  
  background-image: 
    radial-gradient(at 0% 0%, rgba(88, 204, 2, 0.06) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(255, 75, 75, 0.04) 0px, transparent 50%);
  background-color: #f7f7f7;
  color: #3c3c3c;
}

body.theme-emerald .sidebar {
  background-color: #ffffff;
  border-right: 1px solid #e5e5e5;
}

body.theme-emerald h1,
body.theme-emerald h2,
body.theme-emerald h3,
body.theme-emerald h4,
body.theme-emerald h5,
body.theme-emerald h6,
body.theme-emerald strong,
body.theme-emerald .brand-name,
body.theme-emerald .quiz-opt-text {
  color: #3c3c3c !important;
}

body.theme-emerald .brand-icon {
  color: #ffffff;
}

body.theme-emerald .nav-btn {
  color: #777777;
}

body.theme-emerald .nav-btn.active {
  background: rgba(88, 204, 2, 0.12);
  color: #58cc02;
  border-left: 3px solid #58cc02;
  text-shadow: none;
}

body.theme-emerald .card {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  background-color: #ffffff;
}

body.theme-emerald .input-ctrl, 
body.theme-emerald select, 
body.theme-emerald textarea {
  background: #ffffff;
  border: 2px solid #e5e5e5;
  color: #3c3c3c;
}
body.theme-emerald .input-ctrl:focus, 
body.theme-emerald select:focus, 
body.theme-emerald textarea:focus {
  border-color: #58cc02;
}

body.theme-emerald .input-ctrl::placeholder {
  color: #aaa;
}

body.theme-emerald .stat-badge, 
body.theme-emerald .heart-container {
  background: #ffffff;
  border: 2px solid #e5e5e5;
}
body.theme-emerald .stat-value, 
body.theme-emerald .heart-value {
  color: #3c3c3c;
}

body.theme-emerald .sidebar-user-card {
  background: #ffffff !important;
  border: 2px solid #e5e5e5;
}
body.theme-emerald .sidebar-user-card p {
  color: #888;
}

body.theme-emerald .path-node-lbl {
  background: #ffffff;
  border: 2px solid #e5e5e5;
}
body.theme-emerald .path-node-lbl p {
  color: #888;
}

body.theme-emerald .quiz-opt-card {
  background: #ffffff;
  border: 2px solid #e5e5e5;
}
body.theme-emerald .quiz-opt-card:hover:not(.disabled) {
  background: #f0f0f0;
}
body.theme-emerald .quiz-opt-card.selected {
  border-color: #58cc02;
  background: rgba(88, 204, 2, 0.08);
}
body.theme-emerald .quiz-opt-marker {
  border-color: #ccc;
  background: #f7f7f7;
  color: #777;
}
body.theme-emerald .quiz-opt-card.selected .quiz-opt-marker {
  background: #58cc02;
  color: #fff;
  border-color: #58cc02;
}

body.theme-emerald .quiz-header {
  background: #ffffff;
  border: 2px solid #e5e5e5;
}
body.theme-emerald #quiz-lives-count {
  color: #3c3c3c;
}

body.theme-emerald .quiz-progress-bar-bg {
  background: #e5e5e5;
}

body.theme-emerald .btn-secondary {
  background: #ffffff;
  border: 2px solid #e5e5e5;
  color: #777;
}
body.theme-emerald .btn-secondary:hover {
  background: #f0f0f0;
  color: #3c3c3c;
}

body.theme-emerald .mobile-header,
body.theme-emerald .mobile-nav {
  background: #ffffff;
  border-top: 1px solid #e5e5e5;
  border-bottom: 1px solid #e5e5e5;
}
body.theme-emerald .mobile-nav .nav-btn {
  color: #777;
}
body.theme-emerald .mobile-nav .nav-btn.active {
  color: #58cc02;
  background: transparent;
  border-left: none;
}

/* Theme: CYBERPUNK NEON */
body.theme-cyberpunk {
  --bg-primary: #0a0114;
  --bg-secondary: #130225;
  --bg-panel: rgba(22, 4, 38, 0.75);
  --bg-panel-hover: rgba(35, 6, 61, 0.85);
  --border-color: rgba(213, 0, 249, 0.22);
  --border-glow: rgba(0, 229, 255, 0.45);
  
  --color-primary: #d500f9; /* Violet */
  --color-work: #ff3366;    /* Neon Pink */
  --color-rest: #00e5ff;    /* Neon Cyan */
  --color-vo2: #ff00ff;
  --color-wprime: #ffab00;
  
  background-image: 
    radial-gradient(at 0% 0%, rgba(213, 0, 249, 0.18) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(0, 229, 255, 0.12) 0px, transparent 50%);
  background-color: #0a0114;
}
body.theme-cyberpunk .brand-icon {
  background: linear-gradient(135deg, #ff00ff, #00e5ff);
  box-shadow: 0 0 15px rgba(213, 0, 249, 0.5);
}
body.theme-cyberpunk .sidebar {
  background-color: rgba(10, 1, 20, 0.98);
}
body.theme-cyberpunk .nav-btn.active {
  background: linear-gradient(135deg, rgba(213, 0, 249, 0.2), rgba(0, 229, 255, 0.05));
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
  text-shadow: 0 0 10px rgba(213, 0, 249, 0.35);
}

/* Theme: SCIENTIFIC GOLD */
body.theme-gold {
  --bg-primary: #09090b;
  --bg-secondary: #121214;
  --bg-panel: rgba(22, 22, 26, 0.8);
  --bg-panel-hover: rgba(30, 30, 36, 0.9);
  --border-color: rgba(255, 171, 0, 0.18);
  --border-glow: rgba(255, 171, 0, 0.4);
  
  --color-primary: #ffab00; /* Gold */
  --color-work: #e65100;    /* Dark Orange */
  --color-rest: #c0ca33;    /* Lime Green */
  --color-vo2: #ffd54f;
  --color-wprime: #ffab00;
  
  background-image: 
    radial-gradient(at 0% 0%, rgba(255, 171, 0, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(20, 20, 24, 0.6) 0px, transparent 50%);
  background-color: #09090b;
}
body.theme-gold .brand-icon {
  background: linear-gradient(135deg, #ffab00, #ff6f00);
  box-shadow: 0 0 15px rgba(255, 171, 0, 0.4);
}
body.theme-gold .sidebar {
  background-color: rgba(9, 9, 11, 0.98);
}
body.theme-gold .nav-btn.active {
  background: linear-gradient(135deg, rgba(255, 171, 0, 0.15), rgba(255, 111, 0, 0.03));
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
  text-shadow: 0 0 10px rgba(255, 171, 0, 0.3);
}

.academy-layout-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  align-items: start;
}

/* ==========================================================================
   HIIT FLOW NEW COMPONENTS (DASHBOARD, JOURNEY & ACTIVE WORKOUT TIMER)
   ========================================================================== */

/* Dashboard Layout */
.dashboard-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.dash-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.stat-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem !important;
}
.stat-icon {
  font-size: 2.2rem;
}
.stat-title {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.15rem;
}
.stat-value {
  font-size: 1.25rem;
  font-weight: bold;
  color: #fff;
}
.dashboard-split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.5rem;
}
@media (max-width: 900px) {
  .dashboard-split {
    grid-template-columns: 1fr;
  }
}
.welcome-card {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08) 0%, rgba(12, 17, 34, 0.8) 100%) !important;
  border: 1px solid rgba(0, 229, 255, 0.2) !important;
  box-shadow: 0 8px 32px rgba(0, 229, 255, 0.05);
}
.level-badge-large {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 12px;
}
.level-badge-large span {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  font-family: var(--font-heading);
}
.level-badge-large small {
  font-size: 0.65rem;
  color: var(--color-text-muted);
}
.workout-meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.meta-pill {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  color: var(--color-text);
}

/* Periodization Plan (Journey) styles */
.level-select-btn {
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem 1rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all var(--transition-normal);
  text-align: center;
  color: var(--color-text-muted);
}
.level-select-btn:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.15);
}
.level-select-btn.active {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.12);
}
.level-select-btn.active strong {
  color: var(--color-primary);
}
.level-select-btn small {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.periodization-block {
  margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
}
.block-header {
  margin-bottom: 1.5rem;
  border-left: 4px solid var(--color-primary);
  padding-left: 0.85rem;
}
.block-header h4 {
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 0.15rem;
}
.block-header p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.weeks-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
}
.weeks-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 15px;
  bottom: 15px;
  width: 2px;
  background: rgba(255, 255, 255, 0.05);
  z-index: 1;
}

.week-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: relative;
  z-index: 2;
}
.week-number-badge {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.week-row.active-week .week-number-badge {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.25);
  background: rgba(0, 229, 255, 0.05);
}

.week-workouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  flex: 1;
}

.workout-node {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  padding: 0.85rem 1rem;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
}
.workout-node:hover {
  background: var(--bg-panel-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}
.workout-node.completed {
  border-color: rgba(0, 230, 118, 0.25);
  background: rgba(0, 230, 118, 0.02);
}
.workout-node.completed span {
  color: var(--color-rest);
}
.workout-node.current {
  border-color: var(--color-primary);
  background: rgba(0, 229, 255, 0.05);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.1);
  animation: borderGlowPulse 2s infinite alternate;
}
@keyframes borderGlowPulse {
  0% { border-color: rgba(0, 229, 255, 0.3); }
  100% { border-color: rgba(0, 229, 255, 0.8); }
}
.workout-node.current span {
  color: var(--color-primary);
  font-weight: bold;
}
.workout-node.locked {
  opacity: 0.35;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.01);
}
.workout-node-label {
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
}
.workout-node-label small {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin-top: 0.1rem;
}
.workout-node-status {
  font-size: 1rem;
  display: flex;
  align-items: center;
}

/* Workout details drawer */
.workout-detail-drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(10, 15, 30, 0.98);
  border-top: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: 24px 24px 0 0;
  padding: 1.75rem;
  z-index: 999;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(25px);
  max-width: 600px;
  margin: 0 auto;
  animation: slideUp 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}
.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}
.drawer-close-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.drawer-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* Active Workout Timer */
.timer-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1.5rem;
  align-items: stretch;
}
@media (max-width: 900px) {
  .timer-layout {
    grid-template-columns: 1fr;
  }
}
.timer-circle-container {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 0 auto;
}
.timer-svg {
  transform: rotate(-90deg);
}
.timer-bg-circle {
  fill: none;
  stroke: rgba(255, 255, 255, 0.03);
  stroke-width: 8;
}
.timer-progress-circle {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.1s linear, stroke 0.5s;
}
.timer-time-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3.5rem;
  font-family: var(--font-heading);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}
.timer-phase-badge {
  display: inline-block;
  padding: 0.4rem 1.2rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.3s;
}
.timer-phase-badge.phase-warmup {
  background: rgba(255, 171, 0, 0.12);
  color: var(--color-wprime);
  border-color: rgba(255, 171, 0, 0.25);
  box-shadow: 0 0 10px rgba(255, 171, 0, 0.1);
}
.timer-phase-badge.phase-work {
  background: rgba(255, 51, 102, 0.12);
  color: var(--color-work);
  border-color: rgba(255, 51, 102, 0.25);
  box-shadow: 0 0 10px rgba(255, 51, 102, 0.1);
}
.timer-phase-badge.phase-recovery {
  background: rgba(0, 230, 118, 0.12);
  color: var(--color-rest);
  border-color: rgba(0, 230, 118, 0.25);
  box-shadow: 0 0 10px rgba(0, 230, 118, 0.1);
}
.timer-phase-badge.phase-cooldown {
  background: rgba(213, 0, 249, 0.12);
  color: var(--color-vo2);
  border-color: rgba(213, 0, 249, 0.25);
  box-shadow: 0 0 10px rgba(213, 0, 249, 0.1);
}

.btn-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  min-width: unset;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}
.btn-circle.btn-xl {
  width: 70px;
  height: 70px;
}
.btn-circle i {
  width: 24px;
  height: 24px;
}
.btn-circle.btn-xl i {
  width: 32px;
  height: 32px;
}

.timer-pulse-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  z-index: 1;
  transition: opacity 0.5s;
}

.timer-display-card {
  position: relative;
  overflow: hidden;
}
.timer-display-card.pulse-warmup {
  border-color: rgba(255, 171, 0, 0.2);
}
.timer-display-card.pulse-work {
  border-color: rgba(255, 51, 102, 0.4) !important;
  box-shadow: 0 0 35px rgba(255, 51, 102, 0.15) !important;
  animation: bgPulseRed 2s infinite alternate;
}
.timer-display-card.pulse-recovery {
  border-color: rgba(0, 230, 118, 0.2) !important;
  box-shadow: 0 0 25px rgba(0, 230, 118, 0.08) !important;
  animation: bgPulseGreen 2.5s infinite alternate;
}
.timer-display-card.pulse-cooldown {
  border-color: rgba(213, 0, 249, 0.2);
}

@keyframes bgPulseRed {
  0% { background-color: rgba(7, 10, 19, 0.98); }
  100% { background-color: rgba(255, 51, 102, 0.04); }
}
@keyframes bgPulseGreen {
  0% { background-color: rgba(7, 10, 19, 0.98); }
  100% { background-color: rgba(0, 230, 118, 0.02); }
}

/* Completion Overlay & Success Modal */
.completion-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(4, 6, 12, 0.92);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 99999;
  backdrop-filter: blur(15px);
  animation: fadeIn 0.3s;
  overflow-y: auto;
  padding: 1.5rem 1rem;
}
.completion-modal {
  border: 1px solid rgba(0, 229, 255, 0.4) !important;
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.25) !important;
  animation: scaleUp 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  width: 100%;
  max-width: 450px;
  margin: auto;
}
@media (max-width: 480px) {
  .completion-overlay {
    padding: 0.75rem 0.5rem;
    align-items: flex-start;
  }
  .completion-modal {
    padding: 1.25rem !important;
    border-radius: 14px !important;
  }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes scaleUp {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Weekly node checkboxes */
.week-check-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}
.week-check-node .node-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.01);
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
  color: var(--color-text-muted);
  transition: all 0.3s;
}
.week-check-node.done .node-circle {
  background: rgba(0, 230, 118, 0.1);
  border-color: var(--color-rest);
  color: #fff;
  box-shadow: 0 0 10px rgba(0, 230, 118, 0.15);
}
.week-check-node.done span {
  color: var(--color-rest);
  font-weight: bold;
}

/* PSE Active State Styles */
.pse-btn.selected {
  outline: 2.5px solid var(--color-primary) !important;
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.4) !important;
  transform: scale(1.1) translateY(-2px);
  filter: brightness(1.2);
}
.pse-btn:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

/* Achievements Grid */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}
@media (max-width: 600px) {
  .achievements-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
  }
}
.achievement-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.65rem 0.35rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: rgba(255,255,255,0.01);
  text-align: center;
  transition: all 0.3s;
  cursor: default;
}
.achievement-badge.unlocked {
  background: rgba(0,229,255,0.05);
  border-color: rgba(0,229,255,0.3);
  box-shadow: 0 0 12px rgba(0,229,255,0.1);
}
.achievement-badge.unlocked .badge-icon {
  filter: none;
}
.achievement-badge .badge-icon {
  font-size: 1.6rem;
  filter: grayscale(1) opacity(0.3);
  transition: filter 0.3s;
}
.achievement-badge.unlocked .badge-icon {
  filter: drop-shadow(0 0 6px rgba(0,229,255,0.4));
}
.achievement-badge .badge-name {
  font-size: 0.6rem;
  color: var(--color-text-muted);
  font-weight: 600;
  line-height: 1.2;
}
.achievement-badge.unlocked .badge-name {
  color: var(--color-primary);
}

/* Progress Chart Card */
.rep-chart-card {
  background: rgba(0,0,0,0.15);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1rem;
}
#rep-progress-chart {
  width: 100%;
  height: 160px;
  display: block;
}

/* Reports action bar */
.rep-action-bar {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}
.rep-action-bar .btn {
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
}

/* ── Start Workout CTA Button (sidebar + mobile nav) ── */
.nav-btn-start-workout {
  position: relative;
  background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(118,255,3,0.12)) !important;
  border: 1px solid rgba(0,229,255,0.45) !important;
  color: #00e5ff !important;
  font-weight: 700 !important;
}
.nav-btn-start-workout::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: inherit;
  border: 2px solid rgba(0,229,255,0.4);
  animation: nav-pulse 2.2s ease-in-out infinite;
  pointer-events: none;
}
.nav-btn-start-workout i,
.nav-btn-start-workout svg {
  color: #00e5ff !important;
  filter: drop-shadow(0 0 5px rgba(0,229,255,0.7));
}
@keyframes nav-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 0;   transform: scale(1.06); }
}

/* Mobile bottom-nav variant */
#btn-mobile-start-workout {
  color: #00e5ff !important;
}
#btn-mobile-start-workout svg,
#btn-mobile-start-workout i {
  filter: drop-shadow(0 0 5px rgba(0,229,255,0.8));
}

/* ── Fullscreen Overlays (Auth & Paywall) ── */
.fullscreen-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(13, 27, 63, 0.8) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(255, 51, 102, 0.15) 0px, transparent 50%);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  overflow-y: auto;
}

.auth-container, .paywall-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2.5rem;
  width: 100%;
  max-width: 440px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  animation: modal-fade 0.4s ease-out forwards;
}

.auth-container h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.paywall-container {
  max-width: 500px;
}

.paywall-benefits {
  text-align: left;
  background: rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}
.paywall-benefits ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.paywall-benefits li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 1rem;
  color: #e4e4e7;
}
.paywall-benefits li:last-child {
  margin-bottom: 0;
}

/* ── Plan Cards (Paywall) ── */
.plan-cards {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin: 0.5rem 0;
  flex-wrap: wrap;
}

.plan-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 1.5rem 1.25rem;
  flex: 1;
  min-width: 140px;
  max-width: 200px;
  text-align: center;
  position: relative;
  transition: transform 0.2s, border-color 0.2s;
}

.plan-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255,255,255,0.25);
}

.plan-card--featured {
  background: linear-gradient(135deg, rgba(0,212,170,0.15), rgba(0,150,255,0.1));
  border-color: var(--color-primary);
  transform: scale(1.04);
}

.plan-card--featured:hover {
  transform: scale(1.04) translateY(-3px);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.plan-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.plan-price {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 0.2rem;
}

.plan-cents {
  font-size: 1.1rem;
  font-weight: 600;
}

.plan-period {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: center;
}

.plan-saving {
  display: inline-block;
  background: rgba(0,212,170,0.2);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.72rem;
  padding: 1px 6px;
  border-radius: 6px;
}

.btn-plan {
  width: 100%;
  padding: 0.7rem 0.5rem;
  border-radius: 10px;
  border: 1.5px solid rgba(255,255,255,0.3);
  background: transparent;
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-body);
}

.btn-plan:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-1px);
}

.btn-plan--featured {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.btn-plan--featured:hover {
  background: var(--color-primary-hover, #00c4a1);
  border-color: var(--color-primary-hover, #00c4a1);
}

.btn-plan:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ── PAR-Q Modal Styles ── */
.parq-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
  animation: modal-fade 0.3s ease-out forwards;
  box-sizing: border-box;
}

.btn-parq-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 1.25rem 1rem;
  border-radius: 14px;
  font-weight: 800;
  font-size: 1.1rem;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, border-color 0.2s;
  font-family: var(--font-body);
}

.btn-parq-option:hover {
  transform: translateY(-2px);
}

.btn-parq-no {
  background: rgba(118, 255, 3, 0.1);
  border: 1.5px solid rgba(118, 255, 3, 0.4);
  color: #76ff03;
}

.btn-parq-no:hover {
  background: rgba(118, 255, 3, 0.2);
  border-color: #76ff03;
}

.btn-parq-yes {
  background: rgba(255, 171, 0, 0.1);
  border: 1.5px solid rgba(255, 171, 0, 0.4);
  color: #ffab00;
}

.btn-parq-yes:hover {
  background: rgba(255, 171, 0, 0.2);
  border-color: #ffab00;
}

/* ── Feedback & Support Modal Styles ── */
.feedback-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2rem;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.6);
  animation: modal-fade 0.3s ease-out forwards;
  box-sizing: border-box;
}

.btn-contact-channel {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 14px;
  text-decoration: none;
  transition: transform 0.2s, background 0.2s, border-color 0.2s;
  box-sizing: border-box;
}

.btn-contact-channel:hover {
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: linear-gradient(135deg, rgba(37, 211, 102, 0.15), rgba(18, 140, 126, 0.08));
  border: 1px solid rgba(37, 211, 102, 0.4);
  color: #25d366;
}

.btn-whatsapp:hover {
  background: linear-gradient(135deg, rgba(37, 211, 102, 0.25), rgba(18, 140, 126, 0.15));
  border-color: #25d366;
}

.btn-email {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.12), rgba(0, 150, 255, 0.08));
  border: 1px solid rgba(0, 229, 255, 0.35);
  color: #00e5ff;
}

.btn-email:hover {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.22), rgba(0, 150, 255, 0.15));
  border-color: #00e5ff;
}

/* ── BLE Heart Rate Monitor Badge ── */
.ble-hr-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.8rem;
  transition: all 0.3s;
}

.ble-hr-badge.disconnected {
  background: rgba(255, 255, 255, 0.05);
  border: 1px dashed rgba(255, 255, 255, 0.2);
  color: var(--color-text-muted);
}

.ble-hr-badge.connected {
  background: rgba(118, 255, 3, 0.12);
  border: 1px solid rgba(118, 255, 3, 0.4);
  color: #76ff03;
  box-shadow: 0 0 12px rgba(118, 255, 3, 0.2);
}

/* ── LEADERBOARD & PRIVACY STYLES ── */
.privacy-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.privacy-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.privacy-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #444;
  transition: .3s;
  border-radius: 24px;
}
.privacy-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}
input:checked + .privacy-slider {
  background-color: var(--color-primary, #58cc02);
}
input:checked + .privacy-slider:before {
  transform: translateX(20px);
}

.btn-sec-sm {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--color-text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-sec-sm:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.btn-sec-sm.active-opt {
  background: rgba(88, 204, 2, 0.18);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.rank-tab-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--color-text-muted);
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: bold;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.rank-tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.rank-tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #000;
  box-shadow: 0 0 10px rgba(88, 204, 2, 0.3);
}

.leaderboard-row {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.leaderboard-row:hover {
  transform: translateX(4px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}
.leaderboard-row.is-user-row {
  box-shadow: 0 0 15px rgba(88, 204, 2, 0.15);
}

/* Mobile Responsive Fit for Ranking Tab & Global Container */
#tab-ranking, #ranking-container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}

@media (max-width: 600px) {
  .tab-content {
    padding: 0.5rem 0.5rem 5rem 0.5rem !important;
  }
  .leaderboard-card {
    padding: 0.75rem !important;
    border-radius: 14px !important;
    margin-top: 0.25rem !important;
  }
  .podium-container {
    gap: 0.3rem !important;
  }
  .podium-box {
    padding: 0.6rem 0.2rem !important;
  }
  .podium-box h4 {
    font-size: 0.7rem !important;
  }
  .podium-box span {
    font-size: 0.65rem !important;
  }
  .rank-tab-btn {
    padding: 0.3rem 0.65rem !important;
    font-size: 0.72rem !important;
  }
  .leaderboard-row {
    padding: 0.5rem 0.6rem !important;
  }
}

/* ── Toast Notifications System ── */
#toast-container, .toast {
  position: fixed !important;
  bottom: 85px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  z-index: 999999 !important;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.7rem 1.2rem;
  background: rgba(12, 17, 34, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-primary);
  border-radius: 30px;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  max-width: 90vw;
  text-align: center;
  pointer-events: none;
  animation: toastSlideUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes toastSlideUp {
  from {
    opacity: 0;
    transform: translate(-50%, 25px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}