/**
 * Modern Design System for Calculate RPE
 * Version 2.0 - Clean, intuitive, professional
 */

/* ===== DESIGN TOKENS ===== */
:root {
  /* Colors - Modern Neutral Palette */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  --success-500: #10b981;
  --warning-500: #f59e0b;
  --error-500: #ef4444;
  
  /* Additional color variants for compatibility */
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;
  
  --green-50: #f0fdf4;
  --green-100: #dcfce7;
  --green-200: #bbf7d0;
  --green-300: #86efac;
  --green-400: #4ade80;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --green-700: #15803d;
  --green-800: #166534;
  --green-900: #14532d;
  
  --red-50: #fef2f2;
  --red-100: #fee2e2;
  --red-200: #fecaca;
  --red-300: #fca5a5;
  --red-400: #f87171;
  --red-500: #ef4444;
  --red-600: #dc2626;
  --red-700: #b91c1c;
  --red-800: #991b1b;
  --red-900: #7f1d1d;
  
  --info-500: #3b82f6;

  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-mono: 'JetBrains Mono', Consolas, 'Courier New', monospace;
  
  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== TEXT SELECTION FIX ===== */
/* Ensure text content is selectable */
body.modern-layout * {
  user-select: text;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
}

/* But keep buttons and interactive elements non-selectable */
body.modern-layout button,
body.modern-layout .btn,
body.modern-layout .stepper-btn,
body.modern-layout .rep-btn,
body.modern-layout .copy-btn,
body.modern-layout .modern-stepper {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* ===== HIDE ALL OLD SECTIONS ===== */
.modern-layout .target-set-section,
.modern-layout .backoff-warmup-section,
.modern-layout .session-load-section,
.modern-layout .footer .footer-actions,
.modern-layout .last-set-section,
.modern-layout .section:not(.calculator-section),
.modern-layout .target-weight-section,
.modern-layout .plate-math-section,
.modern-layout .e1rm-section {
  display: none !important;
}

/* Hide old UI elements */
.modern-layout .e1rm-display:not(.modern-e1rm-display),
.modern-layout .target-weight-display:not(.target-weight-value),
.modern-layout .plate-breakdown:not(.plate-loading-modern),
.modern-layout .backoff-display,
.modern-layout .warmup-display {
  display: none !important;
}

/* === Show Backoffs & Warm-up inside Results grid === */
.modern-layout .results-grid .backoff-warmup-section {
  display: block !important;
}
.modern-layout .results-grid .backoff-display,
.modern-layout .results-grid .warmup-display {
  display: block !important;
}

/* Hide old modals that might interfere */
.calibration-modal,
.meet-day-modal {
  z-index: 9999 !important;
}

/* Ensure meet day modal works in modern layout */
.modern-layout .meet-day-modal.active {
  display: flex !important;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

/* Modern Meet Day Modal Styling */
.meet-day-modal.modern-modal .modal-content {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 900px;
  max-height: 90vh;
  overflow: hidden;
}

.meet-day-modal .modern-modal-header {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: white;
  border: none;
  padding: var(--space-6);
}

.meet-day-modal .modal-icon {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.meet-day-modal .modal-title {
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
}

.meet-day-modal .modal-subtitle {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.875rem;
}

.meet-day-modal .modern-modal-close {
  color: white;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  transition: all var(--transition-fast);
}

.meet-day-modal .modern-modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.meet-day-modal .modern-modal-body {
  padding: var(--space-6);
  max-height: 60vh;
  overflow-y: auto;
}

.meet-day-modal .modern-intro {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  border-left: 4px solid var(--primary-500);
}

.meet-day-modal .modern-intro p {
  color: var(--gray-800);
  font-size: 1rem;
  font-weight: 500;
  margin: 0;
  line-height: 1.5;
}

.meet-day-modal .modern-section {
  margin-bottom: var(--space-6);
}

.meet-day-modal .section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.meet-day-modal .modern-input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.meet-day-modal .modern-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.meet-day-modal .modern-label {
  font-weight: 500;
  color: var(--gray-700);
  font-size: 0.875rem;
}

.meet-day-modal .modern-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.meet-day-modal .modern-input {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: white;
}

.meet-day-modal .modern-input:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.meet-day-modal .modern-input-unit {
  position: absolute;
  right: var(--space-3);
  color: var(--gray-500);
  font-weight: 500;
  pointer-events: none;
}

.meet-day-modal .modern-tip-box {
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  border: 1px solid var(--blue-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.meet-day-modal .tip-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.meet-day-modal .tip-content {
  flex: 1;
  color: var(--gray-800);
}

.meet-day-modal .tip-content p {
  color: var(--gray-800);
  margin: 0;
}

.meet-day-modal .tip-content h5 {
  margin: 0 0 var(--space-2) 0;
  font-weight: 600;
  color: var(--gray-900);
}

/* Strategy section specific styling */
.meet-day-modal .strategy-notes .tip-content h5 {
  color: var(--gray-900);
  font-weight: 700;
  font-size: 1rem;
}

.meet-day-modal .modern-list {
  margin: 0;
  padding-left: var(--space-4);
  color: var(--gray-800);
}

.meet-day-modal .modern-list li {
  margin-bottom: var(--space-1);
}

.meet-day-modal .modern-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.meet-day-modal .modern-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: all var(--transition-fast);
}

.meet-day-modal .modern-card:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.meet-day-modal .opener-card {
  border-color: var(--green-300);
  background: linear-gradient(135deg, var(--green-50), white);
}

.meet-day-modal .second-card {
  border-color: var(--blue-300);
  background: linear-gradient(135deg, var(--blue-50), white);
}

.meet-day-modal .third-card {
  border-color: var(--red-300);
  background: linear-gradient(135deg, var(--red-50), white);
}

.meet-day-modal .modern-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.meet-day-modal .modern-attempt-number {
  background: var(--primary-500);
  color: white;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.75rem;
}

.meet-day-modal .modern-attempt-label {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.875rem;
}

.meet-day-modal .modern-attempt-weight {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
  text-align: center;
}

.meet-day-modal .attempt-rounding-note {
  margin-top: -6px;
  margin-bottom: var(--space-2);
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-500);
}

.meet-day-modal .modern-attempt-details {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  font-size: 0.875rem;
  color: var(--gray-600);
}

.meet-day-modal .modern-attempt-strategy {
  font-size: 0.875rem;
  color: var(--gray-800);
  text-align: center;
  font-style: italic;
}

.meet-day-modal .modern-modal-footer {
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
  padding: var(--space-4) var(--space-6);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

.meet-day-modal .modern-btn-primary,
.meet-day-modal .modern-btn-secondary {
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
  min-height: 44px;
}

.meet-day-modal .modern-btn-primary {
  background: var(--primary-500);
  color: white;
}

.meet-day-modal .modern-btn-primary:hover:not(:disabled) {
  background: var(--primary-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.meet-day-modal .modern-btn-primary:disabled {
  background: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
}

.meet-day-modal .modern-btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 2px solid var(--gray-300);
}

.meet-day-modal .modern-btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

.meet-day-modal .modern-note {
  text-align: center;
  color: var(--gray-800);
  font-size: 0.875rem;
  margin-top: var(--space-3);
  font-style: italic;
}

/* Timing Section Styling */
.meet-day-modal .timing-section {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: var(--space-4) 0;
}

.meet-day-modal .timing-section .section-title {
  color: var(--gray-900);
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 var(--space-4) 0;
  text-align: center;
}

.meet-day-modal .timing-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.meet-day-modal .timing-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.meet-day-modal .timing-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-700);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.meet-day-modal .timing-value {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gray-900);
}

/* ===== MODERN HEADER ===== */
.modern-header {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}

.modern-header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modern-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  border-radius: var(--radius-md);
  padding: 4px;
}

.modern-logo:hover {
  background: var(--gray-50);
  transform: translateY(-1px);
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: 500;
  margin-top: -2px;
}

.modern-header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* Modern Units Toggle */
.modern-units-toggle {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  gap: var(--space-1);
}

.modern-units-btn {
  padding: var(--space-2) var(--space-4);
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 50px;
}

.modern-units-btn.active {
  background: white;
  color: var(--primary-600);
  box-shadow: var(--shadow-sm);
}

.modern-units-btn:hover:not(.active) {
  color: var(--gray-900);
}

/* Header Actions */
.header-actions {
  display: flex;
  gap: var(--space-2);
}

.header-action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.header-action-btn:hover {
  background: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-700);
  transform: translateY(-1px);
}

.header-action-btn svg {
  transition: all var(--transition-fast);
}

.header-action-btn:hover svg {
  transform: scale(1.1);
}

/* Hide old header and footer */
.modern-layout .header,
.modern-layout .footer {
  display: none !important;
}

/* Ensure clean white background */
.modern-layout {
  background: white;
}

.modern-layout .main-content {
  background: white;
}

/* Responsive Header */
@media (max-width: 768px) {
  .modern-header-container {
    padding: var(--space-3) var(--space-4);
  }
  
  .logo-title {
    font-size: 1.25rem;
  }
  
  .logo-subtitle {
    display: none;
  }
  
  .modern-header-nav {
    gap: var(--space-3);
  }
  
  .header-action-btn span {
    display: none;
  }
  
  .header-action-btn {
    padding: var(--space-2);
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
    touch-action: manipulation;
  }
  
  /* Enhanced touch targets for mobile */
  .modern-units-btn {
    min-width: 44px;
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
  }
}

/* Hero section removed - calculator starts immediately */

/* ===== CALCULATOR SECTION ===== */
.calculator-section {
  background: var(--gray-50);
  min-height: calc(100vh - 80px);
  padding: var(--space-1) var(--space-2) var(--space-2);
}

.calculator-container {
  width: 100%;
  margin: 0;
}

/* ===== STEP INDICATOR ===== */
.step-indicator {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-1);
  background: white;
  padding: var(--space-1);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.step-item {
  display: flex;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
}

.step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 2px;
  background: var(--gray-300);
  z-index: 1;
}

.step-item.active::after {
  background: var(--primary-500);
}

.step-item.active {
  background: var(--primary-50);
  color: var(--primary-700);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  margin-right: var(--space-3);
  transition: all var(--transition-base);
}

.step-item.active .step-number {
  background: var(--primary-500);
  color: white;
}

.step-label {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.step-item.active .step-label {
  color: var(--primary-700);
}

/* ===== MODERN CARDS ===== */
.card {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-xl);
}

.card-header {
  padding: var(--space-2);
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.card-subtitle {
  color: var(--gray-600);
  font-size: 0.75rem;
  line-height: 1.3;
}

.card-body {
  padding: var(--space-2);
}

/* ===== MODERN INPUTS ===== */
.modern-grid {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: var(--space-2) !important;
}

.modern-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.input-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.modern-label {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.875rem;
}

.input-hint {
  color: var(--gray-500);
  font-size: 0.75rem;
}

.modern-input-container {
  display: flex;
  align-items: center;
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  transition: all var(--transition-base);
  position: relative;
}

.modern-input-container:focus-within {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.modern-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--space-4);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  text-align: center;
  outline: none;
}

.modern-input::placeholder {
  color: var(--gray-400);
  font-weight: 400;
}

.input-unit-modern {
  padding: var(--space-2) var(--space-3);
  background: var(--gray-100);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  margin-right: var(--space-2);
}

.modern-stepper {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--gray-600);
}

.modern-stepper:hover {
  background: var(--primary-100);
  color: var(--primary-600);
  transform: scale(1.05);
}

.modern-stepper:active {
  transform: scale(0.95);
}

/* ===== RPE INPUT MODERN ===== */

.rpe-input-modern {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  transition: all var(--transition-base);
}

.rpe-input-modern:focus-within {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.rpe-slider-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.modern-rpe-slider {
  width: 100%;
  height: 8px;
  border-radius: var(--radius-md);
  background: var(--gray-200);
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.modern-rpe-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-500);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.modern-rpe-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  background: var(--primary-600);
}

.rpe-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: 500;
}

.rpe-value-display {
  text-align: center;
  min-width: 80px;
}

.rpe-number-modern {
  width: 60px;
  height: 40px;
  border: 1px solid var(--primary-200);
  border-radius: var(--radius-md);
  background: var(--primary-50);
  color: var(--primary-700);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  outline: none;
  margin-bottom: var(--space-2);
}

.rpe-description {
  font-size: 0.625rem;
  color: var(--gray-600);
  font-weight: 500;
  margin-top: var(--space-1);
}

/* ===== EXERCISE SELECTION ===== */
.exercise-selection-modern {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-200);
}

.exercise-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.exercise-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
  color: var(--gray-700);
  font-size: 0.75rem;
}

.exercise-btn:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
  transform: translateY(-2px);
}

.exercise-btn.active {
  border-color: var(--primary-500);
  background: var(--primary-50);
  color: var(--primary-700);
}

.exercise-icon {
  font-size: 1rem;
}

/* ===== ACTION BUTTONS ===== */
.step-actions {
  margin-top: var(--space-2);
  display: flex;
  justify-content: center;
}

.primary-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.primary-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.primary-btn:hover::before {
  left: 100%;
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  color: #ffffff;
}

.primary-btn:active {
  transform: translateY(0);
  color: #ffffff;
}

/* Improve readability on hover/focus for bottom CTA */
.primary-btn:focus,
.primary-btn:focus-visible,
.primary-btn:focus-within {
  outline: 2px solid rgba(59, 130, 246, 0.35);
  outline-offset: 2px;
  color: #ffffff;
}

/* ===== STEP CONTENT ===== */
.step-content {
  display: none !important;
  animation: fadeInUp 0.5s ease-out;
}

.step-content.active {
  display: block !important;
}

/* ===== OVERRIDE OLD LAYOUT ===== */
.modern-layout .main-content > .section:not(.calculator-section) {
  display: none !important;
}

/* Only show modern interface */
.modern-layout .last-set-section {
  display: none !important;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .step-indicator {
    flex-direction: row;
    gap: var(--space-1);
    justify-content: space-between;
  }
  
  .step-item {
    flex: 1;
    padding: var(--space-2) var(--space-1);
    text-align: center;
  }
  
  .step-item:not(:last-child)::after {
    display: none;
  }
  
  .step-label {
    font-size: 0.625rem;
    line-height: 1.2;
  }
  
  .step-number {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
    margin-right: var(--space-1);
  }
  
  .rpe-input-modern {
    flex-direction: column;
    align-items: stretch;
  }
  
  .exercise-buttons {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
  }
  
  .calculator-section {
    padding: var(--space-1) var(--space-2);
  }
  
  .modern-grid {
    grid-template-columns: 1fr !important;
    gap: var(--space-2) !important;
  }
  
  /* Enhanced mobile touch targets */
  .modern-stepper {
    min-width: 44px;
    min-height: 44px;
    touch-action: manipulation;
  }
  
  .modern-input {
    min-height: 44px;
    font-size: 1rem; /* Prevents zoom on iOS */
  }
  
  .exercise-btn {
    min-height: 44px;
    padding: var(--space-1);
    touch-action: manipulation;
    font-size: 0.75rem;
  }
  
  .exercise-btn .exercise-icon {
    font-size: 0.875rem;
    margin-bottom: var(--space-1);
  }
  
  .primary-btn, .secondary-btn {
    min-height: 48px;
    touch-action: manipulation;
  }
}

/* Medium screens - 3 columns */
@media (min-width: 768px) and (max-width: 1023px) {
  .modern-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}

/* ===== RESULTS SECTION ===== */
.results-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
  grid-template-rows: auto auto auto;
}

/* Top row: e1RM and Calculation Model side by side */
.results-top-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

/* Middle row: RPE Chart */
.results-middle-row {
  display: grid;
  grid-template-columns: 1fr;
}

/* New RPE table (dark theme, app style) */
.rpe-chart-card .card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rpe-chart-card .chart-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.rpe-chart-card .heatmap-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--gray-700);
}

.rpe-legend {
  display: none;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  color: var(--gray-600);
  font-size: 12px;
}

.rpe-legend.visible { display: flex; }

.rpe-legend-bar {
  height: 8px;
  flex: 1;
  border-radius: 6px;
  background: linear-gradient(90deg, #e2e8f0 0%, #60a5fa 50%, #1d4ed8 100%);
}

.rpe-table .cell.heat-low { background: #edf2f7; }
.rpe-table .cell.heat-med { background: #cfe1ff; }
.rpe-table .cell.heat-high { background: #a7c4ff; }
.rpe-table .cell.heat-max { background: #7aa3ff; color: #0f172a; font-weight: 700; }

/* Slice chart */
.rpe-slice { margin-top: 12px; }
.rpe-slice-controls { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
#slice-chart { width: 100%; height: 180px; background: #fff; border: 1px solid var(--gray-200); border-radius: 8px; }
.slice-tooltip { position: absolute; padding: 6px 8px; background: #111827; color: #fff; border-radius: 6px; font-size: 12px; pointer-events: none; box-shadow: 0 6px 18px rgba(0,0,0,0.25); display: none; z-index: 50; }
.rpe-slice-actions { margin-top: 6px; display: flex; gap: 8px; }
.slice-hint { margin-top: 6px; font-size: 12px; color: #64748b; }
.rpe-table .cell.slice-hover { outline: 2px solid var(--primary-400); outline-offset: -2px; }

.rpe-chart-card .chart-toggle-btn {
  background: white;
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  padding: 8px 12px;
  border-radius: 8px;
}

.rpe-chart-card .chart-toggle-btn.active {
  background: var(--primary-50);
  color: var(--primary-700);
  border-color: var(--primary-200);
}

.rpe-chart-card .model-select {
  background: white;
  color: var(--gray-800);
  border: 1px solid var(--gray-300);
  border-radius: 8px;
  padding: 8px 12px;
}

.rpe-table {
  width: max-content;
  min-width: 100%;
  display: grid;
  grid-template-columns: 96px repeat(12, 1fr);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
  background: white;
}

.rpe-table .cell {
  padding: 14px 12px;
  border-right: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
  color: var(--gray-900);
  text-align: center;
}

.rpe-table .head {
  background: var(--primary-50);
  color: var(--primary-800);
  font-weight: 700;
}

.rpe-table .left {
  background: var(--primary-500);
  color: white;
  font-weight: 700;
}

.rpe-table .cell.highlight {
  background: var(--primary-100);
  color: var(--primary-900);
}

/* Responsive table wrapper */
.rpe-table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 12px;
  overscroll-behavior-x: contain;
}

/* Sticky header and first column for better UX on mobile */
.rpe-table .head {
  position: sticky;
  top: 0;
  z-index: 2;
}

.rpe-table .left {
  position: sticky;
  left: 0;
  z-index: 3;
}

/* Mobile: reduce columns shown and spacing */
@media (max-width: 768px) {
  .rpe-chart-card .card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
  .rpe-chart-card .chart-controls {
    width: 100%;
    gap: var(--space-2);
  }
  .rpe-chart-card .model-select {
    width: 100%;
    min-height: 44px; /* larger touch target */
    font-size: 16px; /* prevents iOS zoom */
  }
  .rpe-chart-card .chart-toggle-btn {
    min-height: 40px;
    font-size: 14px;
    padding: 8px 10px;
  }
  .rpe-table {
    grid-template-columns: 72px repeat(12, 96px);
  }
  .rpe-table .cell {
    padding: 10px 8px;
    font-size: 0.875rem;
  }
}

@media (max-width: 420px) {
  .rpe-table {
    grid-template-columns: 64px repeat(12, 88px);
  }
  .rpe-table .cell {
    padding: 8px 6px;
    font-size: 0.8rem;
  }
}


/* Bottom row: Quick Actions */
.results-bottom-row {
  display: grid;
  grid-template-columns: 1fr;
}

.result-card {
  background: linear-gradient(135deg, var(--primary-50) 0%, white 100%);
}

.model-badge {
  background: var(--primary-500);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 500;
}

/* E1RM Display */
.modern-e1rm-display {
  text-align: center;
}

.e1rm-hero {
  margin-bottom: var(--space-2);
}

.e1rm-value-large {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-1);
  margin-bottom: var(--space-1);
}

.e1rm-number-big {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-700);
  line-height: 1;
}

.e1rm-unit-big {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-600);
}

.e1rm-subtitle {
  font-size: 0.95rem;
  color: var(--gray-600);
  margin-top: var(--space-1);
}

.e1rm-breakdown {
  margin-top: var(--space-2);
  font-size: 0.9rem;
  color: var(--gray-700);
  text-align: center;
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  background: var(--gray-50);
}

.e1rm-breakdown .label {
  color: var(--gray-600);
  margin-right: 4px;
}

.e1rm-breakdown .value {
  font-weight: 600;
  color: var(--gray-900);
}

.e1rm-breakdown .sep {
  margin: 0 10px;
  color: var(--gray-400);
}

@media (max-width: 480px) {
  .e1rm-breakdown { font-size: 0.85rem; padding: 5px 8px; }
  .e1rm-breakdown .sep { margin: 0 6px; }
}

/* Personal data indicator */
.personal-data-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  border: 1px solid var(--primary-200);
  border-radius: 8px;
  font-size: 0.875rem;
  color: var(--primary-700);
  font-weight: 500;
  justify-content: center;
}

.personal-data-indicator.personal-data-active {
  animation: personalGlow 2s ease-in-out infinite alternate;
}

.personal-indicator-icon {
  font-size: 1rem;
}

.personal-indicator-text {
  flex: 1;
}

@keyframes personalGlow {
  from {
    box-shadow: 0 0 5px rgba(59, 130, 246, 0.3);
  }
  to {
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
  }
}

.confidence-display {
  display: flex;
  justify-content: center;
}

.confidence-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--success-500);
  color: white;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
}

.confidence-icon {
  font-size: 1rem;
}

/* Model Comparison */
.model-comparison-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--gray-100);
  border: none;
  border-radius: var(--radius-lg);
  color: var(--gray-700);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: var(--space-6);
}

.model-comparison-toggle:hover {
  background: var(--gray-200);
}

.model-comparison-modern {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-4);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-4);
}

.model-result {
  text-align: center;
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-lg);
  border: 2px solid var(--gray-200);
  transition: all var(--transition-base);
}

.model-result:hover {
  border-color: var(--primary-300);
  transform: translateY(-2px);
}

/* Specific styling for different formula types - uniform border thickness */
.epley-result {
  border-color: var(--blue-200);
  border-width: 2px;
}

.brzycki-result {
  border-color: var(--green-200);
  border-width: 2px;
}

.lombardi-result {
  border-color: #c084fc;
  border-width: 2px;
}

.verro-result {
  border-color: #fed7aa;
  border-width: 2px;
}

.rts-result {
  border-color: var(--primary-200);
  border-width: 2px;
}

.formula-result {
  border-color: var(--gray-300);
  border-width: 2px;
}

/* Advanced Options Section */
.advanced-options-section {
  margin: var(--space-6) 0;
  border-top: 1px solid var(--gray-200);
  padding-top: var(--space-4);
}

.advanced-options-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-700);
}

.advanced-options-toggle:hover {
  background: var(--gray-100);
  border-color: var(--gray-300);
}

.advanced-options-toggle.active {
  background: var(--primary-50);
  border-color: var(--primary-200);
  color: var(--primary-700);
}

.toggle-icon {
  transition: transform var(--transition-base);
}

.advanced-options-toggle.active .toggle-icon {
  transform: rotate(180deg);
}

.advanced-options-content {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  animation: slideDown 0.3s ease-out;
}

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

.advanced-options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
}

.input-description {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-top: var(--space-2);
  line-height: 1.4;
}


/* Responsive adjustments for advanced options */
@media (max-width: 768px) {
  .advanced-options-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

.model-name {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.model-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-600);
  margin-bottom: var(--space-1);
}

.model-description {
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* Quick Actions */
.quick-actions-card {
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
}

.action-buttons-grid {
  display: grid;
  gap: var(--space-4);
  position: relative;
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: left;
}

.action-btn:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
  transform: translateY(-2px);
}

.action-icon {
  font-size: 1.5rem;
  min-width: 40px;
}

.action-title {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.action-subtitle {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* Calibration status indicator */
.calibration-status { 
  display: flex; 
  align-items: center; 
  gap: 6px; 
  margin-top: 6px; 
  font-size: 11px; 
  font-weight: 500; 
}
.status-indicator { 
  width: 6px; 
  height: 6px; 
  border-radius: 50%; 
  background: var(--gray-400); 
  flex-shrink: 0; 
}
.status-indicator.has-data { background: #10b981; }
.status-indicator.no-data { background: #f59e0b; }
.status-text { color: var(--gray-600); }

/* Model Selector */
.model-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.model-option {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.model-option:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
}

.model-option input[type="radio"] {
  margin-right: var(--space-3);
  accent-color: var(--primary-500);
}

.model-option input[type="radio"]:checked + .model-option-content {
  color: var(--primary-700);
}

.model-option-title {
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--gray-800);
}

.model-option-description {
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* Ensure unselected model options have good contrast */
.model-option:not(.selected) .model-option-title {
  color: var(--gray-800);
  font-weight: 600;
}

.model-option:not(.selected) .model-option-description {
  color: var(--gray-600);
}

/* Selected model option styling */
.model-option.selected {
  border-color: var(--primary-500);
  background: var(--primary-50);
}

.model-option.selected .model-option-title {
  color: var(--primary-700);
  font-weight: 700;
}

.model-option.selected .model-option-description {
  color: var(--primary-600);
}

/* Disabled Personal model (no calibration) */
.model-option.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  filter: grayscale(20%);
}
.model-option.disabled input[type="radio"] {
  pointer-events: none;
}
.model-option.disabled .model-option-title,
.model-option.disabled .model-option-description {
  color: var(--gray-500);
}

/* Subtle inline hint for Personal model */
.model-inline-hint{
  margin-top: 6px;
  font-size: 12px;
  color: var(--gray-600);
}
.model-option.disabled .model-inline-hint{ display: block; }
.model-option:not(.disabled) .model-inline-hint{ display: none; }
.model-inline-hint .hint-link{
  background: none;
  border: none;
  color: var(--primary-600);
  text-decoration: underline;
  cursor: pointer;
  padding: 0;
  font-size: 12px;
}
.model-inline-hint .hint-link:hover{ color: var(--primary-700); }

/* Subtle header/footer links */
.subtle-link {
  color: var(--gray-600);
  text-decoration: none;
}
.subtle-link:hover {
  color: var(--primary-600);
  text-decoration: underline;
}

/* Header calibration link compact styling */
.modern-header .header-actions .header-link{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 4px 8px;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  background: #fff;
}
.modern-header .header-actions .header-link .status-indicator{ width: 6px; height: 6px; border-radius: 50%; background: var(--gray-400); }
.modern-header .header-actions .header-link .status-text{ color: var(--gray-600); font-size: 11px; }
.modern-header .header-actions .header-link:hover{ border-color: var(--primary-300); background: var(--primary-50); text-decoration: none; }

/* Mobile header adjustments */
@media (max-width: 640px) {
  .modern-header-container { gap: 8px; }
  .modern-logo .logo-text .logo-subtitle { display: none; }
  /* Show compact units toggle on mobile */
  .modern-units-toggle {
    display: inline-flex;
    padding: 2px;
    gap: 4px;
    border-radius: 10px;
    background: var(--gray-100);
  }
  .modern-units-btn {
    min-width: 36px;
    min-height: 28px;
    padding: 4px 8px;
    font-size: 12px;
    line-height: 1;
  }
  .modern-header .header-actions .header-link { padding: 4px 8px; gap: 4px; }
  .modern-header .header-actions .header-link .link-label { display: none; }
  .modern-header .header-actions .header-link .status-text { font-size: 10px; }
}

/* Secondary Button */
.secondary-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: white;
  color: var(--gray-700);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.secondary-btn:hover {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

/* Planning Section */
.planning-grid {
  display: grid;
  gap: var(--space-2);
}

.target-controls {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.rpe-selector {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.rpe-quick-btn {
  padding: var(--space-1) var(--space-2);
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.rpe-quick-btn:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
}

.rpe-quick-btn.active {
  background: var(--primary-500);
  color: white;
  border-color: var(--primary-500);
}

/* Target RPE and Reps Sections */
.target-rpe-section,
.target-reps-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.target-rpe-section .modern-label,
.target-reps-section .modern-label {
  font-weight: 600;
  color: var(--gray-900);
  font-size: 0.875rem;
  margin-bottom: var(--space-1);
}

.reps-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: var(--space-1);
  max-width: 400px;
}

.rep-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-900);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
}

.rep-btn:hover {
  border-color: var(--primary-300);
  background: var(--primary-50);
}

.rep-btn.active {
  background: var(--primary-500);
  color: white;
  border-color: var(--primary-500);
}

/* RPE Education Section - removed unused styles */

/* education-content styles removed */

.rpe-scale-list {
  margin: var(--space-3) 0;
  padding-left: var(--space-4);
  list-style: none;
}

.rpe-scale-list li {
  margin-bottom: var(--space-2);
  font-size: 0.875rem;
  color: var(--gray-700);
  position: relative;
}

.rpe-scale-list li::before {
  content: "•";
  color: var(--primary-500);
  font-weight: bold;
  position: absolute;
  left: -var(--space-4);
}

.rpe-scale-list strong {
  color: var(--primary-600);
  font-weight: 600;
}

.education-links {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--gray-200);
  font-size: 0.75rem;
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.education-links a {
  color: var(--primary-600);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.education-links a:hover {
  color: var(--primary-700);
  text-decoration: underline;
}

.education-links .separator {
  color: var(--gray-400);
}

.target-result {
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  text-align: center;
}

.target-weight-display {
  margin-bottom: var(--space-2);
}

.target-weight-value {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.target-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-600);
}

.target-unit {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-600);
}

.target-subtitle {
  color: var(--gray-600);
  font-size: 1rem;
}

/* Plate Loading Modern */
.plate-loading-modern {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.plate-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
}

.plate-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 56px;
  padding: 0;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: 10px;
  font-size: 0.875rem;
}

.plate-weight {
  font-weight: 600;
  color: var(--gray-900);
}

.plate-count {
  color: var(--gray-600);
}

@media (min-width: 768px) {
  .modern-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  
  .results-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
  }
  
  .results-top-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
  }
  
  .primary-result {
    grid-row: 1;
  }
  
  .step-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .action-buttons-grid {
    grid-template-columns: 1fr;
  }
  
  .rpe-selector {
    justify-content: center;
  }
  
  .target-rpe-section,
  .target-reps-section {
    gap: var(--space-1);
  }
  
  .reps-grid {
    max-width: 100%;
    gap: var(--space-1);
  }
  
  .rep-btn {
    width: 32px;
    height: 32px;
    font-size: 0.75rem;
  }
  
  /* RPE education responsive styles removed */
  
  /* education-content responsive styles removed */
  
  .education-links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
  
  .planning-grid {
    grid-template-columns: 1fr;
    width: 100%;
    margin: 0;
  }
}

@media (min-width: 1024px) {
  .results-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
  }
  
  .results-top-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
  }
  
  .primary-result {
    grid-column: 1;
    grid-row: 1;
  }
  
  .quick-actions-card {
    grid-column: 1;
    grid-row: 1;
  }
  
  .settings-card {
    grid-column: 1 / 4;
    grid-row: 2;
  }
}

/* ===== MODERN FOOTER ===== */
.modern-footer {
  background: white;
  border-top: 1px solid var(--gray-200);
  margin-top: var(--space-16);
}

.modern-footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-6) var(--space-6);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-weight: 500;
}

.footer-links {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.footer-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-600);
  background: var(--primary-50);
  transform: translateY(-1px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--gray-100);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin: 0;
}

.footer-tech {
  display: flex;
  gap: var(--space-2);
}

.tech-badge {
  background: var(--green-100);
  color: var(--green-700);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 500;
}

/* Responsive Footer */
@media (max-width: 768px) {
  .modern-footer-container {
    padding: var(--space-8) var(--space-4) var(--space-4);
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .footer-links {
    justify-content: center;
    gap: var(--space-4);
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }
}

/* ===== MODERN MODAL SYSTEM ===== */
.modern-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modern-modal.active {
  display: flex;
}

/* Hide old modal when modern layout is active */
.modern-layout .modal:not(.modern-modal):not(.meet-day-modal):not(.calibration-modal) {
  display: none !important;
}

/* Make calibration modal use modern styling */
.modern-layout .calibration-modal {
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modern-layout .calibration-modal.active {
  display: flex;
}

.modern-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  cursor: pointer;
}

.modern-modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  animation: modalSlideIn 0.3s ease-out;
  margin: var(--space-4);
  display: flex;
  flex-direction: column;
}

/* Share modal tweaks */
#share-modal .primary-btn { min-width: 160px; }
#share-modal .secondary-btn { min-width: 160px; }

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modern-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2);
  border-bottom: 1px solid var(--gray-200);
  background: linear-gradient(135deg, var(--primary-50) 0%, white 100%);
  flex-shrink: 0;
}

.modal-header-content {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.modal-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.modal-title-group {
  display: flex;
  flex-direction: column;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0;
  line-height: 1.2;
}

.modal-subtitle {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin: 0;
  margin-top: var(--space-1);
}

.modern-modal-close {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modern-modal-close:hover {
  background: var(--gray-200);
  color: var(--gray-900);
}

/* ===== MODERN WIZARD PROGRESS ===== */
.modern-wizard-progress {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  flex-shrink: 0;
}

.modern-wizard-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  position: relative;
}

.wizard-step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.75rem;
  transition: all var(--transition-fast);
}

.modern-wizard-step.active .wizard-step-number {
  background: var(--primary-500);
  color: white;
}

.modern-wizard-step.completed .wizard-step-number {
  background: var(--green-500);
  color: white;
}

.wizard-step-label {
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--gray-600);
  text-align: center;
  line-height: 1.2;
}

.modern-wizard-step.active .wizard-step-label {
  color: var(--primary-600);
}

.wizard-step-connector {
  width: 50px;
  height: 2px;
  background: var(--gray-200);
  margin: 0 var(--space-2);
  margin-top: 16px;
}

.modern-wizard-step.completed + .wizard-step-connector {
  background: var(--green-500);
}

/* ===== MODERN MODAL BODY ===== */
.modern-modal-body {
  padding: var(--space-3);
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.modern-wizard-content {
  display: none;
}

.modern-wizard-content.active {
  display: block;
}

/* Ensure old wizard content still works with new styling */
.modern-layout .wizard-content {
  display: block;
}

.modern-layout .wizard-content.hidden {
  display: none !important;
}

.modern-layout .modern-wizard-content {
  display: block;
}

.modern-layout .modern-wizard-content.hidden {
  display: none !important;
}

/* ===== WELCOME STEP ===== */
.modern-calibration-intro {
  text-align: center;
}

.welcome-hero {
  margin-bottom: var(--space-3);
}

.welcome-icon {
  margin-bottom: var(--space-2);
  color: var(--primary-500);
}

.welcome-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 var(--space-2);
}

.welcome-subtitle {
  font-size: 1.125rem;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.6;
}

.modern-benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.benefit-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  text-align: center;
  transition: all var(--transition-fast);
}

.benefit-card:hover {
  border-color: var(--primary-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.benefit-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
}

.benefit-card h5 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 0 0 var(--space-1);
}

.benefit-card p {
  font-size: 0.75rem;
  color: var(--gray-600);
  margin: 0;
  line-height: 1.4;
}

.modern-requirements {
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: left;
}

.requirements-header h5 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 var(--space-2);
}

.modern-requirements p {
  font-size: 0.875rem;
  color: var(--gray-800);
  margin: 0;
  line-height: 1.5;
  font-weight: 600;
}

/* ===== MODERN MODAL FOOTER ===== */
.modern-modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2);
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
  gap: var(--space-3);
  flex-shrink: 0;
}

.modern-modal-footer .secondary-btn {
  background: white;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-lg);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.modern-modal-footer .secondary-btn:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--gray-400);
}

.modern-modal-footer .secondary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.modern-modal-footer .primary-btn {
  background: var(--primary-500);
  border: 1px solid var(--primary-500);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-lg);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.modern-modal-footer .primary-btn:hover:not(:disabled) {
  background: var(--primary-600);
  border-color: var(--primary-600);
  transform: translateY(-1px);
}

.modern-modal-footer .primary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== EXERCISE SELECTION STEP ===== */
.modern-layout .wizard-content h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 0 0 var(--space-2);
  text-align: center;
}

.modern-layout .wizard-content p {
  color: var(--gray-600);
  margin: 0 0 var(--space-6);
  text-align: center;
  line-height: 1.6;
}

.modern-layout .exercise-selection {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.modern-layout .exercise-option {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.modern-layout .exercise-option:hover {
  border-color: var(--primary-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.modern-layout .exercise-option.selected {
  border-color: var(--primary-500);
  background: var(--primary-50);
}

.modern-layout .exercise-option .exercise-icon {
  font-size: 2rem;
  margin-bottom: var(--space-2);
  display: block;
}

.modern-layout .exercise-option h5 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-900);
  margin: 0 0 var(--space-1);
}

.modern-layout .exercise-option p {
  font-size: 0.75rem;
  color: var(--gray-600);
  margin: 0;
  text-align: center;
  line-height: 1.4;
}

.modern-layout .custom-exercise-input {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-4);
}

.modern-layout .custom-exercise-input label {
  display: block;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}

.modern-layout .custom-exercise-input input {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

/* ===== DATA INPUT STEP ===== */
.modern-layout #calibration-data-rows {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-4);
}

.modern-layout .calibration-data-header {
  background: var(--gray-50);
  padding: var(--space-3);
  display: grid;
  grid-template-columns: auto 1fr 1fr 1fr auto;
  gap: var(--space-3);
  border-bottom: 1px solid var(--gray-200);
  font-weight: 600;
  color: var(--gray-700);
  font-size: 0.875rem;
  align-items: center;
}

.modern-layout .calibration-data-row {
  padding: var(--space-3);
  display: grid;
  grid-template-columns: auto 1fr 1fr 1fr auto;
  gap: var(--space-3);
  border-bottom: 1px solid var(--gray-100);
  align-items: center;
}

.modern-layout .calibration-data-row:last-child {
  border-bottom: none;
}

.modern-layout .calibration-data-row span {
  font-weight: 600;
  color: var(--gray-800);
  font-size: 0.875rem;
  min-width: 50px;
  text-align: left;
}

.modern-layout .calibration-data-row input {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  width: 100%;
}

.modern-layout .calibration-data-row .remove-row {
  background: var(--red-50);
  border: 1px solid var(--red-200);
  color: var(--red-600);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modern-layout .calibration-data-row .remove-row:hover {
  background: var(--red-100);
  border-color: var(--red-300);
}

.modern-layout #add-calibration-set {
  background: var(--primary-500);
  border: 1px solid var(--primary-500);
  color: white;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  margin-top: var(--space-3);
  width: 100%;
  justify-content: center;
}

.modern-layout #add-calibration-set:hover {
  background: var(--primary-600);
  border-color: var(--primary-600);
  transform: translateY(-1px);
}

.modern-layout #add-calibration-set svg {
  width: 16px;
  height: 16px;
}

.modern-layout .calibration-tips {
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.modern-layout .calibration-tips h5 {
  color: var(--gray-900);
  font-weight: 700;
  margin: 0 0 var(--space-2);
  font-size: 0.875rem;
}

.modern-layout .calibration-tips ul {
  margin: 0;
  padding-left: var(--space-4);
  color: var(--gray-800);
  font-size: 0.75rem;
  line-height: 1.5;
  font-weight: 500;
}

/* ===== RESULTS STEP ===== */
.modern-layout .calibration-results {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.modern-layout .accuracy-metrics {
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  border: 2px solid var(--primary-100);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  position: relative;
  overflow: hidden;
}

.modern-layout .accuracy-metrics::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500), var(--success-500), var(--warning-500));
}

.modern-layout .accuracy-metrics h5 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.modern-layout .accuracy-metrics h5::before {
  content: '📊';
  font-size: 1.25rem;
}

.modern-layout .accuracy-display {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.modern-layout .accuracy-circle {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: conic-gradient(
    var(--success-500) 0deg,
    var(--success-500) calc(var(--accuracy-percent, 0) * 3.6deg),
    var(--gray-200) calc(var(--accuracy-percent, 0) * 3.6deg),
    var(--gray-200) 360deg
  );
  border: 4px solid white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--success-600);
  flex-shrink: 0;
  box-shadow: 0 8px 25px -5px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  position: relative;
}

.modern-layout .accuracy-circle::before {
  content: '';
  position: absolute;
  inset: 8px;
  background: white;
  border-radius: 50%;
  z-index: 1;
}

.modern-layout .accuracy-circle span {
  position: relative;
  z-index: 2;
}

.modern-layout .accuracy-description {
  flex: 1;
}

.modern-layout .accuracy-description p {
  font-size: 1rem;
  color: var(--gray-700);
  margin: 0;
  line-height: 1.6;
  font-weight: 500;
  background: var(--gray-50);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-500);
}


.modern-layout .comparison-table {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.modern-layout .comparison-table table {
  width: 100%;
  border-collapse: collapse;
}

.modern-layout .comparison-table th {
  background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
  padding: var(--space-4);
  font-weight: 700;
  color: var(--primary-800);
  font-size: 0.875rem;
  text-align: center;
  border-bottom: 2px solid var(--primary-200);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modern-layout .comparison-table td {
  padding: var(--space-4);
  font-size: 0.875rem;
  color: var(--gray-800);
  border-bottom: 1px solid var(--gray-100);
  font-weight: 500;
  text-align: center;
  transition: all var(--transition-base);
}

.modern-layout .comparison-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--gray-900);
  background: var(--gray-50);
}

.modern-layout .comparison-table tr:hover td {
  background: var(--primary-50);
  transform: translateY(-1px);
}

.modern-layout .comparison-table tr:last-child td {
  border-bottom: none;
}

.modern-layout .comparison-table tr:nth-child(even) td {
  background: var(--gray-25);
}

.modern-layout .comparison-table tr:nth-child(even):hover td {
  background: var(--primary-50);
}

/* Override any old table styles */
.modern-layout .comparison-table .comparison-row,
.modern-layout .comparison-table .comparison-cell {
  display: none !important;
}

.modern-layout .comparison-table table {
  width: 100% !important;
  border-collapse: collapse !important;
}

.modern-layout .comparison-table th,
.modern-layout .comparison-table td {
  padding: var(--space-3) !important;
  font-size: 0.875rem !important;
  font-weight: 500 !important;
  color: var(--gray-800) !important;
  text-align: left !important;
  border-bottom: 1px solid var(--gray-100) !important;
}

.modern-layout .comparison-table th {
  background: var(--gray-100) !important;
  font-weight: 600 !important;
  color: var(--gray-800) !important;
  border-bottom: 1px solid var(--gray-200) !important;
}

.modern-layout .comparison-table tr:last-child td {
  border-bottom: none !important;
}

.modern-layout .calibration-actions {
  margin-top: var(--space-6);
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  border: 2px solid var(--primary-100);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  position: relative;
  overflow: hidden;
}

.modern-layout .calibration-actions::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--success-500), var(--primary-500), var(--warning-500));
}

.modern-layout .action-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  align-items: center;
}

.modern-layout .action-buttons .btn {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  min-width: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  overflow: hidden;
}

/* Clean modern modal styling - no overrides needed */

.modern-layout .action-buttons .btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.modern-layout .action-buttons .btn:hover::before {
  left: 100%;
}

.modern-layout .action-buttons .btn-secondary {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 2px solid var(--gray-300);
  color: var(--gray-700);
  box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.modern-layout .action-buttons .btn-secondary:hover {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border-color: var(--gray-400);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px -2px rgba(0, 0, 0, 0.1);
}

.modern-layout .action-buttons .btn-secondary::before {
  content: '🔄';
  margin-right: var(--space-1);
}

.modern-layout .action-buttons .btn-primary {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
  border: 2px solid var(--primary-500);
  color: white;
  box-shadow: 0 4px 8px -2px rgba(59, 130, 246, 0.3);
}

.modern-layout .action-buttons .btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  border-color: var(--primary-600);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px -3px rgba(59, 130, 246, 0.4);
}

.modern-layout .action-buttons .btn-primary::before {
  content: '💾';
  margin-right: var(--space-1);
}

/* Large screens - make modal even wider */
@media (min-width: 1200px) {
  .modern-modal-content {
    max-width: 1000px;
  }
}

/* Mobile Layout - Stack cards vertically */
@media (max-width: 768px) {
  .results-top-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

/* Responsive Modal */
@media (max-width: 768px) {
  .modern-modal {
    padding: var(--space-2);
    /* Prevent body scroll when modal is open */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
  
  .modern-modal-content {
    max-height: 95vh;
    margin: var(--space-2);
    max-width: calc(100vw - var(--space-4));
    /* Better mobile scrolling */
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
  
  .modal-header-content {
    gap: var(--space-3);
  }
  
  .modal-title {
    font-size: 1.25rem;
  }
  
  .modal-subtitle {
    font-size: 0.75rem;
  }

  /* Meet Day Modal Mobile Styles */
  .meet-day-modal .modern-input-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .meet-day-modal .modern-cards-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .meet-day-modal .modern-modal-body {
    padding: var(--space-4);
    max-height: 70vh;
  }

  .meet-day-modal .modern-modal-header {
    padding: var(--space-4);
  }

  .meet-day-modal .modal-title {
    font-size: 1.25rem;
  }

  .meet-day-modal .modal-subtitle {
    font-size: 0.75rem;
  }

  .meet-day-modal .modern-modal-footer {
    padding: var(--space-3) var(--space-4);
    flex-direction: column-reverse;
  }

  .meet-day-modal .modern-btn-primary,
  .meet-day-modal .modern-btn-secondary {
    width: 100%;
    min-height: 48px;
  }
  
  .modern-wizard-progress {
    padding: var(--space-3);
  }
  
  .wizard-step-connector {
    width: 30px;
  }
  
  .modern-benefits-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  
  .welcome-title {
    font-size: 1.25rem;
  }
  
  .welcome-subtitle {
    font-size: 0.875rem;
  }
  
  .modern-modal-body {
    padding: var(--space-3);
  }
  
  .modern-modal-footer {
    padding: var(--space-3);
    gap: var(--space-2);
  }
  
  .modern-modal-footer .secondary-btn,
  .modern-modal-footer .primary-btn {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
  }
  
  .modern-layout .exercise-selection {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
  
  .modern-layout .exercise-option {
    padding: var(--space-3);
  }
  
  .modern-layout .calibration-data-header,
  .modern-layout .calibration-data-row {
    grid-template-columns: auto 1fr 1fr 1fr auto;
    gap: var(--space-2);
    font-size: 0.75rem;
  }
  
  .modern-layout .calibration-data-row input {
    padding: var(--space-1) var(--space-2);
    font-size: 0.75rem;
  }
  
  .modern-layout .accuracy-display {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .modern-layout .accuracy-circle {
    width: 80px;
    height: 80px;
    font-size: 1.5rem;
  }
  
  .modern-layout .accuracy-metrics {
    padding: var(--space-4);
  }
  
  
  .modern-layout .calibration-actions {
    padding: var(--space-4);
  }
  
  .modern-layout .action-buttons {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .modern-layout .action-buttons .btn {
    width: 100%;
    min-width: auto;
  }
}

/* Modern Share Dropdown */
.modern-share-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  margin-top: var(--space-2);
  overflow: hidden;
}

.share-option-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-4);
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.share-option-btn:hover {
  background: var(--gray-50);
}

.share-option-btn:active {
  background: var(--gray-100);
}

.share-option-icon {
  font-size: 1.25rem;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.share-option-content {
  flex: 1;
}

.share-option-title {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.share-option-subtitle {
  font-size: 0.75rem;
  color: var(--gray-600);
  line-height: 1.3;
}

/* Responsive adjustments for share dropdown */
/* removed legacy share dropdown styles (kept placeholders to avoid build diffs) */

.confidence-tooltip {
  position: fixed;
  z-index: 9999;
  background: #111827;
  color: #fff;
  padding: 8px 10px;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  font-size: 0.85rem;
  line-height: 1.3;
  max-width: 280px;
  pointer-events: none;
}

.slice-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.slice-toolbar label{font-size:12px;color:#64748b;margin-right:6px}
.slice-toolbar .toolbar-left,.slice-toolbar .toolbar-right{display:flex;align-items:center;gap:10px}

/* ===== MODERN TOAST NOTIFICATIONS ===== */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(0,0,0,0.06);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  color: #0f172a;
  max-width: 360px;
  min-width: 260px;
  pointer-events: auto;
  transform: translateY(100%);
  animation: slideUp 0.25s ease-out forwards;
  position: relative;
}

.toast::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 0 2px 2px 0;
}

.toast.info {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
  color: #1e40af;
  border-color: rgba(59, 130, 246, 0.2);
}

.toast.info::before {
  background: #3b82f6;
}

.toast.success {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(34, 197, 94, 0.05) 100%);
  color: #166534;
  border-color: rgba(34, 197, 94, 0.2);
}

.toast.success::before {
  background: #22c55e;
}

.toast.warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(245, 158, 11, 0.05) 100%);
  color: #92400e;
  border-color: rgba(245, 158, 11, 0.2);
}

.toast.warning::before {
  background: #f59e0b;
}

.toast.error {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(239, 68, 68, 0.05) 100%);
  color: #991b1b;
  border-color: rgba(239, 68, 68, 0.2);
}

.toast.error::before {
  background: #ef4444;
}

.toast-message {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.35;
}

.toast-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all 0.2s ease;
  opacity: 0.7;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.toast-close:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.1);
}

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

/* Mobile toast adjustments */
@media (max-width: 640px) {
  .toast-container { bottom: 12px; right: 12px; left: 12px; }
  
  .toast { min-width: auto; max-width: none; padding: 10px 12px; }
  
  .toast-message { font-size: 0.82rem; }
}
.slice-toolbar .model-select{appearance:none;border:1px solid #e2e8f0;border-radius:8px;padding:6px 10px;background:#fff;color:#0f172a;font-size:13px}
.slice-toolbar .chart-toggle-btn{border:1px solid #e2e8f0;background:#f8fafc;color:#0f172a;border-radius:8px;padding:6px 12px;cursor:pointer}
.slice-toolbar .chart-toggle-btn:hover{background:#eef2f7}

#slice-chart{width:100%;height:220px;background:#ffffff;border:1px solid #eef2f7;border-radius:12px;padding:8px}
.slice-tooltip{position:absolute;display:none;background:#0f172a;color:#fff;padding:6px 8px;border-radius:6px;font-size:12px;pointer-events:none;z-index:5;box-shadow:0 4px 12px rgba(0,0,0,0.15)}
.slice-hint{margin-top:8px;color:#64748b;font-size:12px}

.results-grid .rpe-slice{position:relative;background:#fff;border:1px solid #e5e7eb;border-radius:14px;padding:10px 12px 10px 12px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.results-grid .rpe-slice .slice-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin-bottom:8px;padding:4px 2px;border-bottom:1px solid #eef2f7}
.results-grid .rpe-slice .slice-toolbar label{font-size:12px;color:#64748b;margin-right:6px;margin-left:8px;white-space:nowrap}
.results-grid .rpe-slice .slice-toolbar .model-select{appearance:none;border:1px solid #e2e8f0;border-radius:10px;padding:6px 12px;background:#fff;color:#0f172a;font-size:13px;line-height:1;min-width:88px}
.results-grid .rpe-slice .slice-toolbar .chart-toggle-btn{border:1px solid #e2e8f0;background:#f8fafc;color:#0f172a;border-radius:10px;padding:6px 12px;cursor:pointer;white-space:nowrap}
.results-grid .rpe-slice .slice-toolbar .chart-toggle-btn:hover{background:#eef2f7}
.results-grid .rpe-slice #slice-chart{display:block;width:100%;height:260px;background:#ffffff;border:1px solid #eef2f7;border-radius:12px;padding:8px 8px 14px 8px;box-sizing:border-box}
.results-grid .rpe-slice .slice-tooltip{position:absolute;display:none;background:#0f172a;color:#fff;padding:6px 8px;border-radius:6px;font-size:12px;pointer-events:none;z-index:5;box-shadow:0 4px 12px rgba(0,0,0,0.15)}
.results-grid .rpe-slice .slice-hint{margin-top:8px;color:#64748b;font-size:12px}

/* ===== FLOATING BACK-TO-CALCULATOR BUBBLE ===== */
.back-to-calculator {
  position: fixed;
  bottom: 84px;
  right: 18px;
  width: 44px;
  height: 44px;
  border-radius: 9999px;
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  box-shadow: 0 10px 25px rgba(29, 78, 216, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  text-decoration: none;
  z-index: 60;
  opacity: 0.95;
  transition: transform .2s ease, opacity .2s ease, box-shadow .2s ease;
}

.back-to-calculator:hover { opacity: 1; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(29, 78, 216, 0.3); }
.back-to-calculator:active { transform: translateY(0); }

/* Ensure icon is crisp and visible on hover */
.back-to-calculator svg {
  stroke: #ffffff;
  opacity: 0.95;
  filter: drop-shadow(0 1px 0 rgba(0,0,0,0.35));
  transition: transform .2s ease, opacity .2s ease, filter .2s ease;
  pointer-events: none;
}

.back-to-calculator:hover svg { opacity: 1; transform: scale(1.06); filter: drop-shadow(0 1px 1px rgba(0,0,0,0.45)); }

.back-to-calculator::after {
  content: attr(data-tip);
  position: absolute;
  right: 52px;
  bottom: 50%;
  transform: translateY(50%);
  background: rgba(15, 23, 42, 0.85);
  color: #fff;
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
}

.back-to-calculator:hover::after { opacity: 1; }

@media (max-width: 767px) {
  .back-to-calculator { bottom: 72px; right: 14px; width: 40px; height: 40px; }
}

/* Personal chart hint */
.personal-chart-hint{margin-top:8px;padding:8px 12px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;font-size:12px;color:#64748b}
.personal-chart-hint .hint-text{color:#64748b}
.personal-chart-hint .hint-link{background:none;border:none;color:#2563eb;text-decoration:underline;cursor:pointer;font-size:12px;padding:0}
.personal-chart-hint .hint-link:hover{color:#1d4ed8}

/* Slice header styles */
.results-grid .rpe-slice .slice-header{display:flex;flex-direction:column;gap:2px;margin:4px 2px 6px 2px}
.results-grid .rpe-slice .slice-title{margin:0;font-size:16px;font-weight:600;color:#0f172a}
.results-grid .rpe-slice .slice-subtitle{margin:0;font-size:12px;color:#64748b}