/* app/assets/stylesheets/components/custom-split-builder.css */

/* ===============================================
   CUSTOM SPLIT BUILDER - DARK THEME
   =============================================== */

.custom-split-builder {
  font-family: var(--font-primary);
}

.custom-split-builder h1 {
  font-family: var(--font-primary);
  font-weight: var(--weight-bold);
  color: var(--text-primary);
  letter-spacing: var(--tracking-wide);
}

/* ===============================================
   MUSCLE GROUP CARDS
   =============================================== */

.muscle-group-card {
  background: var(--surface-primary);
  border: 1px solid var(--border-default);
  border-radius: 8px;
  padding: 1rem;
  transition: all var(--transition-fast);
  position: relative;
  cursor: pointer;
}

.muscle-group-card:hover {
  border-color: var(--accent-primary);
  background: var(--surface-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.muscle-group-card.selected {
  border-color: var(--accent-primary);
  background: var(--surface-hover);
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.25);
}

.muscle-group-card .form-check {
  margin: 0;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.muscle-group-card .form-check-label {
  flex: 1;
  cursor: pointer;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-weight: var(--weight-normal);
  line-height: var(--leading-relaxed);
}

.muscle-group-card .form-check-label strong {
  font-weight: var(--weight-medium);
  color: var(--text-primary);
  display: block;
  margin-bottom: 0.25rem;
}

.muscle-group-card .form-check-label small {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ===============================================
   RECOVERY SELECTOR
   =============================================== */

.recovery-selector {
  border-top: 1px solid var(--border-muted);
  padding-top: 0.75rem;
  animation: slideDown 0.3s ease-out;
}

.recovery-selector .form-label {
  color: var(--text-secondary);
  font-family: var(--font-primary);
  font-weight: var(--weight-medium);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: 0.5rem;
}

.recovery-selector .form-select {
  background: var(--surface-primary);
  border: 1px solid var(--border-default);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  padding: 0.375rem 0.75rem;
}

.recovery-selector .form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.25);
}

/* ===============================================
   SPLIT PREVIEW CARD
   =============================================== */

.card.sticky-top {
  top: 1rem;
}

.muscle-preview-item {
  background: var(--surface-hover) !important;
  border: 1px solid var(--border-muted);
  transition: all var(--transition-fast);
}

.muscle-preview-item:hover {
  background: var(--surface-active) !important;
  border-color: var(--accent-primary);
}

.muscle-preview-item strong {
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-weight: var(--weight-medium);
}

.muscle-preview-item small {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.muscle-preview-item .badge {
  background: var(--accent-primary) !important;
  color: #ffffff;
  font-family: var(--font-primary);
  font-weight: var(--weight-medium);
  font-size: var(--text-xs);
}

/* ===============================================
   STATS DISPLAY
   =============================================== */

.stat-box {
  text-align: center;
}

.stat-box .h4 {
  font-family: var(--font-primary);
  font-weight: var(--weight-bold);
  margin-bottom: 0.25rem;
}

.stat-box small {
  color: var(--text-muted);
  font-family: var(--font-primary);
  font-weight: var(--weight-normal);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

/* ===============================================
   SPLIT ROTATION PREVIEW
   =============================================== */

.rotation-preview .badge {
  background: var(--surface-hover) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-default);
  font-family: var(--font-primary);
  font-weight: var(--weight-normal);
  font-size: var(--text-xs);
  padding: 0.375rem 0.75rem;
  margin: 0.125rem;
}

.rotation-preview .badge:hover {
  background: var(--accent-primary) !important;
  color: #ffffff !important;
  border-color: var(--accent-primary);
}

/* ===============================================
   ANIMATIONS
   =============================================== */

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    max-height: 200px;
    transform: translateY(0);
  }
}

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

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: var(--shadow-sm);
  }
  50% {
    box-shadow: 0 0 20px rgba(88, 166, 255, 0.3);
  }
}

/* ===============================================
   EMPTY STATE
   =============================================== */

.custom-split-builder .text-center.text-muted {
  color: var(--text-muted) !important;
}

.custom-split-builder .text-center.text-muted i {
  color: var(--text-muted);
  opacity: 0.6;
}

.custom-split-builder .text-center.text-muted p {
  color: var(--text-muted);
  font-family: var(--font-primary);
  font-weight: var(--weight-normal);
}

/* ===============================================
   SUBMIT BUTTON STATES
   =============================================== */

.custom-split-builder .btn-success:disabled {
  background: var(--surface-hover);
  border-color: var(--border-muted);
  color: var(--text-muted);
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.custom-split-builder .btn-success:not(:disabled) {
  animation: pulseGlow 2s infinite;
}

.custom-split-builder .btn-success:not(:disabled):hover {
  animation: none;
}

/* ===============================================
   MOBILE OPTIMIZATIONS
   =============================================== */

@media (max-width: 768px) {
  .custom-split-builder .row {
    margin: 0;
  }

  .custom-split-builder .col-lg-8,
  .custom-split-builder .col-lg-4 {
    padding: 0;
  }

  .custom-split-builder .col-lg-4 {
    margin-top: 2rem;
  }

  .muscle-group-card {
    padding: 0.75rem;
    margin-bottom: 0.75rem;
  }

  .muscle-group-card .form-check {
    gap: 0.5rem;
  }

  .recovery-selector {
    padding-top: 0.5rem;
  }

  .muscle-preview-item {
    padding: 0.75rem !important;
    margin-bottom: 0.5rem !important;
  }

  .stat-box .h4 {
    font-size: 1.25rem;
  }

  .rotation-preview .badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
  }

  .card.sticky-top {
    position: static !important;
    top: auto !important;
  }
}

/* ===============================================
   ACCESSIBILITY & REDUCED MOTION
   =============================================== */

@media (prefers-reduced-motion: reduce) {
  .muscle-group-card,
  .recovery-selector,
  .muscle-preview-item {
    transition: none !important;
    animation: none !important;
  }

  .custom-split-builder .btn-success:not(:disabled) {
    animation: none !important;
  }

  @keyframes slideDown {
    from, to {
      opacity: 1;
      max-height: 200px;
      transform: translateY(0);
    }
  }

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

/* High contrast mode */
@media (prefers-contrast: high) {
  .muscle-group-card {
    border-width: 2px;
  }

  .muscle-group-card.selected {
    border-width: 3px;
  }

  .muscle-group-card .form-check-label strong {
    font-weight: var(--weight-bold);
  }
}

/* ===============================================
   FOCUS STATES
   =============================================== */

.muscle-group-card:focus-within {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.25);
  outline: none;
}

.muscle-group-card .form-check-input:focus {
  box-shadow: 0 0 0 0.2rem rgba(88, 166, 255, 0.25);
  border-color: var(--accent-primary);
}

/* ===============================================
   LOADING STATES
   =============================================== */

.muscle-group-card.loading {
  opacity: 0.7;
  pointer-events: none;
  position: relative;
}

.muscle-group-card.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 1rem;
  width: 1rem;
  height: 1rem;
  margin-top: -0.5rem;
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
  border-right-color: transparent;
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}