/* /wp-content/plugins/convalidacion-tool/css/convalidacion-tool.css */
/* REFACTORED: Complete modern UX redesign with sophisticated design system */

/* === Design Tokens === */
:root {
  /* Brand Colors - Professional Palette */
  --brand-primary: #ff6200;
  --brand-primary-hover: #ff934f;
  --brand-primary-light: rgba(255, 98, 0, 0.08);
  --brand-primary-medium: rgba(255, 98, 0, 0.16);
  
  /* Semantic Colors */
  --color-success: #22c55e;
  --color-success-light: #dcfce7;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-error: #ef4444;
  --color-error-light: #fef2f2;
  
  /* Neutral Palette */
  --color-gray-50: #fafafa;
  --color-gray-100: #f4f4f5;
  --color-gray-200: #e4e4e7;
  --color-gray-300: #d4d4d8;
  --color-gray-400: #a1a1aa;
  --color-gray-500: #71717a;
  --color-gray-600: #52525b;
  --color-gray-700: #3f3f46;
  --color-gray-800: #27272a;
  --color-gray-900: #18181b;
  
  /* Surface Colors */
  --color-background: #ffffff;
  --color-surface: var(--color-gray-50);
  --color-surface-elevated: #ffffff;
  --color-border: var(--color-gray-200);
  --color-border-light: var(--color-gray-100);
  --color-divider: var(--color-gray-100);
  
  /* Text Colors */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-muted: var(--color-gray-500);
  --color-text-inverse: #ffffff;
  
  /* Typography Scale */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', Consolas, monospace;
  
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  
  /* Spacing Scale (8px base) */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-base: 0.375rem; /* 6px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-2xl: 1.5rem;  /* 24px */
  --radius-full: 50rem;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-modal: 1050;
  --z-tooltip: 1100;
}

/* === Base Styles === */
/* Override WordPress block editor layout constraints */
.is-layout-constrained > #convalidacion-tool-app,
#convalidacion-tool-app {
  max-width: none !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
}

#convalidacion-tool-app {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background: var(--color-background);
  margin: var(--space-6) 0;
  padding: 0;
  min-height: 600px;
  position: relative;
}

#convalidacion-tool-app * {
  box-sizing: border-box;
}

/* === Step Container System === */
.step-container {
  display: none;
  opacity: 0;
  transform: translateY(var(--space-4));
  transition: all var(--transition-base);
  padding: var(--space-8);
  max-width: 1600px;
  margin: 0 auto;
}

.step-container.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* === Step Header & Navigation === */
.step-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  gap: var(--space-4);
  min-height: var(--space-10);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  flex: 1;
  min-width: 0; /* Allow shrinking */
}

.breadcrumb-item {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  transition: color var(--transition-base);
  white-space: nowrap;
}

.breadcrumb-item.active {
  color: var(--brand-primary);
}

.breadcrumb-item.completed {
  color: var(--color-success);
}

.breadcrumb-separator {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0 var(--space-1);
}

/* === Enhanced Results Actions === */
.results-actions {
  display: flex;
  gap: var(--space-3);
  flex-shrink: 0;
  align-items: flex-start;
}

.results-actions .btn-secondary {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  min-width: 140px;
  white-space: nowrap;
}

.results-actions .btn-secondary:hover {
  background: var(--brand-primary-light);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.results-actions .btn-primary {
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  min-width: 140px;
  white-space: nowrap;
}

/* === Responsive Breadcrumb Improvements === */
@media (max-width: 900px) {
  .step-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
  }
  
  .breadcrumb {
    justify-content: center;
    padding: var(--space-2) 0;
  }
  
  .results-actions {
    justify-content: center;
    width: 100%;
  }
  
  .results-actions .btn-primary,
  .results-actions .btn-secondary {
    flex: 1;
    max-width: 200px;
  }
}

@media (max-width: 600px) {
  .breadcrumb {
    gap: var(--space-2);
  }
  
  .breadcrumb-item {
    font-size: var(--font-size-xs);
  }
  
  .breadcrumb-separator {
    font-size: var(--font-size-xs);
    margin: 0 var(--space-1);
  }
  
  /* Compact breadcrumb for very small screens */
  .breadcrumb-item:not(.active):not(.completed) {
    display: none;
  }
  
  .breadcrumb-separator {
    display: none;
  }
  
  .breadcrumb-item.active::before {
    content: "📍 ";
    margin-right: var(--space-1);
  }
  
  .breadcrumb-item.completed::before {
    content: "✅ ";
    margin-right: var(--space-1);
  }
}

.back-button {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-base);
}

.back-button:hover {
  color: var(--brand-primary);
}

/* === Selection Interface === */
.selection-container {
  max-width: 1500px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.selection-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-sm);
  width: 100%;
  max-width: 1500px;
  margin: 0 auto;
}

.selection-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-3) 0;
  text-align: center;
}

.selection-description {
  color: var(--color-text-secondary);
  text-align: center;
  margin: 0 0 var(--space-10) 0;
  line-height: var(--line-height-relaxed);
}

/* === Filter Input === */

.filter-input-container {
  position: relative;
  margin-bottom: var(--space-4);
}

.filter-input {
  width: 100%;
  padding: var(--space-4);
  padding-left: var(--space-12);
  padding-left: calc(var(--space-4));
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
  font-family: var(--font-family-base);
  min-height: 3.25rem;
}

.filter-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-light);
}

/* === List Container === */
.ct-list-container {
  margin-bottom: var(--space-6);
}

.ct-list-container.ct-list-dual {
  display: flex;
  gap: var(--space-8);
  align-items: stretch;
  justify-content: center;
  flex-wrap: nowrap;
  width: 100%;
}

.ct-list-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-3);
}

.ct-list-toolbar .btn-link {
  font-size: var(--font-size-sm);
}

.grado-list {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background);
  overflow: hidden;
  position: relative;
  transition: opacity var(--transition-base), transform var(--transition-base);
  flex: 1 1 calc(50% - var(--space-4));
  min-width: 0;
}

.grado-list.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.grado-list.loading::after {
  content: 'Cargando…';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.75);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.source-card .ct-list-header {
  align-items: flex-start;
}

@media (max-width: 768px) {
  .ct-list-container.ct-list-dual {
    flex-direction: column;
  }

  .grado-list {
    flex: 1 1 auto;
  }
}

.ct-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(to bottom, var(--color-gray-100), var(--color-surface));
  border-bottom: 4px solid var(--brand-primary);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), 
              0 2px 4px rgba(0, 0, 0, 0.03);
  position: relative;
}

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

.ct-list-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.8);
  letter-spacing: -0.01em;
}

.ct-list-description {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: var(--line-height-snug);
  font-style: italic;
}

.ct-list-count {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  font-weight: var(--font-weight-semibold);
  background: var(--color-background);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-gray-300);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.ct-list-actions {
  display: flex;
  gap: var(--space-3);
}

.ct-list-actions .btn-link {
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-sm);
}

.ct-list-items {
  max-height: 300px;
  overflow-y: auto;
}

.ct-list-placeholder {
  padding: var(--space-5);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.ct-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: all var(--transition-base);
  border-bottom: 1px solid var(--color-border-light);
}

.ct-list-item:last-child {
  border-bottom: none;
}

.ct-list-item:hover {
  background: var(--brand-primary-light);
}

.ct-list-item.selected {
  background: var(--brand-primary-medium);
  border-left: 4px solid var(--brand-primary);
}

.ct-list-item.selected:hover {
  background: var(--brand-primary-medium);
}

.ct-list-item-content {
  flex: 1;
}

.ct-list-item-title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.ct-list-item.selected .ct-list-item-title {
  color: var(--brand-primary);
  font-weight: var(--font-weight-semibold);
}

.ct-list-item-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.ct-list-item.selected .ct-list-item-meta {
  color: var(--brand-primary);
}

.ct-list-item-indicator {
  width: var(--space-5);
  height: var(--space-5);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-base);
  background: var(--color-background);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ct-list-item.selected .ct-list-item-indicator {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: white;
}

.ct-list-item.selected .ct-list-item-indicator::after {
  content: '✓';
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
}

/* === Selected Tags Enhancement === */
.selected-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  padding: var(--space-2) 0;
}

.selection-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* === Dropdown Lists === */


/* === Selected Items === */
.selected-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--brand-primary-light);
  border: 1px solid var(--brand-primary);
  border-radius: var(--radius-md);
  margin: 0;
  font-size: var(--font-size-sm);
  width: 100%;
  min-width: 0;
  flex-wrap: wrap;
}

.selected-content {
  flex: 1;
  min-width: 0;
}

.selected-title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.selected-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.remove-selection {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.remove-selection:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--color-error);
}

/* === Tag System === */
.selected-tags {
  margin-top: var(--space-4);
}

.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  min-height: var(--space-8);
}

.tag {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  animation: tagAppear var(--transition-base) ease-out;
  width: 100%;
  min-width: 0;
  flex-wrap: wrap;
}

.tag-code {
  padding: var(--space-1) var(--space-2);
  background: var(--brand-primary);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.tag-name {
  padding: var(--space-1) var(--space-2);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  flex: 1;
  min-width: 0;
  word-wrap: break-word;
  word-break: break-word;
}

@keyframes tagAppear {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.tag-remove {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-1);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
  border-radius: var(--radius-sm);
  line-height: 1;
  margin-left: var(--space-1);
  flex-shrink: 0;
}

.tag-remove:hover {
  background: var(--color-error);
  color: white;
}

/* === Help & Information === */
.selection-help {
  margin-top: var(--space-8);
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--brand-primary);
}

.help-item {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.help-item strong {
  color: var(--color-text-primary);
}

/* === Loading Screen === */
.loading-container {
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.loading-spinner {
  width: 64px;
  height: 64px;
  border: 4px solid var(--color-border);
  border-top: 4px solid var(--brand-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--space-8) auto;
}

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

.loading-container h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-4) 0;
}

.loading-container p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* === Results Interface === */
.results-actions {
  display: flex;
  gap: var(--space-3);
}

.results-container {
  max-width: 1000px;
  margin: 0 auto;
}

.results-summary-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--brand-primary);
}

.summary-warnings {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-warning-light);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-warning);
  color: var(--color-warning);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.summary-warnings .warning-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  line-height: var(--line-height-snug);
}

.results-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  gap: var(--space-4);
}

.results-toolbar-label {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.results-view-toggle {
  display: flex;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  overflow: hidden;
}

.view-btn {
  padding: var(--space-2) var(--space-4);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

.view-btn.active {
  background: var(--brand-primary);
  color: white;
}

.results-grid {
  display: grid;
  gap: var(--space-6);
}

/* === Results Cards === */
.result-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

.result-header h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.result-stats {
  display: flex;
  gap: var(--space-3);
}

.modules-count {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.modules-list {
  display: grid;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: var(--space-2) var(--space-2);
  margin-top: var(--space-2);
}

.modules-list .module-item + .module-item {
  border-top: 1px solid var(--color-gray-200);
}

.module-item {
  background: transparent;
  margin: 0;
  padding: var(--space-2) var(--space-2);
  overflow: hidden;
}


/* === Summary Statistics === */
.summary-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.stat-item {
  text-align: center;
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.stat-value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--brand-primary);
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.selected-grados {
  margin-top: var(--space-4);
}

.selected-grado-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-2);
  width: 100%;
  min-width: 0;
  flex-wrap: wrap;
}

.selected-grado-item .tag-name {
  padding: var(--space-1) var(--space-2);
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  flex: 1;
  min-width: 0;
  word-wrap: break-word;
  word-break: break-word;
}

.selected-grado-item .uc-count {
  background: var(--color-background);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  flex-shrink: 0;
  margin-left: auto;
}

/* === Expandable Selected Grados === */
.selected-grado-item.expandable {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
}

.selected-grado-item.expandable:hover {
  border-color: var(--brand-primary);
  background: var(--brand-primary-light);
}

.selected-grado-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-surface);
  transition: background var(--transition-base);
  width: 100%;
}

.selected-grado-header:hover {
  background: var(--color-border);
}

.selected-grado-header.active {
  background: var(--brand-primary-light);
}

.selected-grado-info {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}

.selected-grado-expand-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-base);
  transition: all var(--transition-base);
  transform: rotate(0deg);
  flex-shrink: 0;
}

.selected-grado-expand-btn:hover {
  background: var(--color-background);
  color: var(--brand-primary);
}

.selected-grado-expand-btn.expanded {
  transform: rotate(180deg);
  color: var(--brand-primary);
}

.selected-grado-details {
  border-top: 1px solid var(--color-border);
  background: var(--color-background);
  padding: var(--space-4);
  animation: slideDown var(--transition-base) ease-out;
  width: 100%;
}

.selected-grado-modules {
  display: grid;
  gap: var(--space-2);
}

.selected-grado-module-item {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
}

.selected-grado-module-item.compact {
  background: transparent;
  padding-left: 0;
  padding-right: 0;
}

.selected-grado-module-main {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.selected-grado-module-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.selected-grado-module-code {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-background);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
}

.selected-grado-bridge-inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.selected-grado-bridge-chip {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  background: var(--color-background);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

.no-results {
  text-align: center;
  padding: var(--space-8);
  color: var(--color-text-secondary);
  font-style: italic;
}

.error-message {
  margin: var(--space-4) 0;
}

/* === Enhanced Module Breakdown === */
.module-section {
  margin: var(--space-4) 0;
}

.module-section-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin: 0;
  padding: 0;
  border-radius: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.module-section-title.convalidated {
  color: var(--color-success);
}

.module-section-title.partial {
  background: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.module-section-title.impossible {
  color: var(--color-error);
}

.module-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  margin-bottom: var(--space-2);
}

.module-section-header:focus {
  outline: none;
}

.module-section-header.convalidated {
  background: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success);
}

.module-section-header.impossible {
  background: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error);
}

.module-section-arrow {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--space-4);
}

.module-section-header.convalidated .module-section-arrow {
  color: var(--color-success);
}

.module-section-header.impossible .module-section-arrow {
  color: var(--color-error);
}

.module-section-arrow.collapsed {
  transform: rotate(-90deg);
}

.modules-list {
  display: grid;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: var(--space-2) var(--space-2);
  margin-top: var(--space-2);
}

.modules-list .module-item:nth-child(odd) {
  background: var(--color-background);
}

.modules-list .module-item:nth-child(even) {
  background: var(--color-surface);
}

.modules-list.collapsed {
  display: none;
}

.module-item.expandable {
  margin-bottom: 0;
}

.module-detail-block {
  margin-bottom: var(--space-3);
}

.module-detail-block:last-child {
  margin-bottom: 0;
}

.module-detail-block ul {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-5);
  line-height: var(--line-height-relaxed);
}

.module-detail-block strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.module-supporting-list {
  list-style: none;
  padding-left: 0;
  margin: var(--space-2) 0 0;
  display: grid;
  gap: var(--space-2);
}

.module-supporting-list li {
  background: var(--color-background);
  border-radius: var(--radius-base);
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.module-formativo-support-list {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.module-formativo-support-item {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.module-formativo-support-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  background: var(--color-gray-100, var(--color-surface));
  border-bottom: 1px solid var(--color-border);
}

.module-formativo-support-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.module-formativo-support-arrow {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: transform var(--transition-base);
}

.module-formativo-support-arrow.collapsed {
  transform: rotate(-90deg);
}

.module-formativo-support-details {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.module-formativo-support-details.hidden {
  display: none;
}

.module-formativo-code {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-background);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.module-formativo-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.module-bridge-list {
  display: grid;
  gap: var(--space-2);
}

.module-bridge-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.module-bridge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
}

.module-bridge-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.module-bridge-code {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-background);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.module-bridge-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.module-bridge-context {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.formativo-contributor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-1) 0;
  border-bottom: 1px solid var(--color-divider);
}

.formativo-contributor:last-child {
  border-bottom: none;
}

.formativo-contributor-grade {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.formativo-contributor-module {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.formativo-contributor.empty {
  color: var(--color-text-muted);
}

.module-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0;
  transition: background var(--transition-base);
}

.module-item.expandable .module-header {
  cursor: pointer;
}

.module-item:not(.expandable) .module-header {
  cursor: default;
}

.module-header.active {
  background: var(--brand-primary-light);
}

.module-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 1;
  min-width: 0;
}

.module-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  word-break: break-word;
}

.module-code {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-background);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.expand-btn {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.expand-btn:hover {
  background: var(--color-background);
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.expand-btn.expanded {
  transform: rotate(180deg);
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.module-details {
  border-top: 1px solid var(--color-divider);
  background: transparent;
  padding: var(--space-3) 0;
  font-size: var(--font-size-sm);
}

/* Simplified expandable animation */
.module-details.hidden {
  display: none;
}

.uc-item.available .uc-code {
  color: var(--color-success);
}

.uc-item.missing .uc-code {
  color: var(--color-error);
}

.uc-suggestions {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-base);
  border-left: 3px solid var(--brand-primary);
}

.uc-suggestions strong {
  color: var(--color-text-primary);
}

.uc-suggestions .no-suggestions {
  color: var(--color-warning);
  font-style: italic;
}

/* === Collapsed Sections === */
.modules-list.collapsed .hidden-content {
  display: none;
}

.show-more-btn {
  text-align: center;
  margin: var(--space-3) 0;
}

.show-more-btn .btn-link {
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-4);
}

/* === Results List View === */
.results-list-view .result-card {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  margin-bottom: var(--space-2);
}

.results-list-view .result-header {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
  flex: 1;
}

.results-list-view .result-header h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}

.results-list-view .result-content {
  display: none;
}

.results-list-view .result-stats {
  margin-left: var(--space-4);
}

/* Convalidated items mimic selected grado chips in list mode */
.results-list-view .result-card.has-convalidations {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-success);
  border-radius: var(--radius-md);
  box-shadow: none;
  padding: var(--space-2) var(--space-3);
  gap: var(--space-3);
}

.results-list-view .result-card.has-convalidations .result-header {
  align-items: center;
  gap: var(--space-2);
}

.results-list-view .result-card.has-convalidations .result-header h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin: 0;
}

.results-list-view .result-card.has-convalidations .result-stats {
  margin-left: auto;
}

.results-list-view .result-card.has-convalidations .modules-count {
  background: var(--color-background);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  padding: var(--space-1) var(--space-3);
}

/* === Status Indicators === */
.result-card.has-convalidations {
  border-left: 4px solid var(--color-success);
}

.result-card.no-convalidations {
  border-left: 4px solid var(--color-error);
}

.modules-count.success {
  background: var(--color-success-light);
  color: var(--color-success);
}

.modules-count.warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

/* === Button System === */
.btn-primary, .btn-secondary, .btn-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--brand-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background: var(--brand-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
  background: var(--color-gray-300);
  color: var(--color-gray-500);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-secondary {
  background: var(--color-background);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--color-surface);
  border-color: var(--brand-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}


.btn-link {
  background: none;
  color: var(--brand-primary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-base);
}

.btn-link:hover {
  background: var(--brand-primary-light);
}

/* === User Information Form === */
.user-info-container {
  max-width: 600px;
  margin: 0 auto;
}

.user-info-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-sm);
}

.user-info-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--space-3) 0;
  text-align: center;
}

.user-info-description {
  color: var(--color-text-secondary);
  text-align: center;
  margin: 0 0 var(--space-10) 0;
  line-height: var(--line-height-relaxed);
}

.user-info-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0;
}

.form-label::after {
  content: " *";
  color: var(--color-error);
  font-weight: var(--font-weight-bold);
}

.form-input {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-background);
  color: var(--color-text-primary);
  transition: all var(--transition-base);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-light);
}

.form-input:hover:not(:focus) {
  border-color: var(--color-gray-300);
}

.form-input.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin: 0;
  min-height: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-error:empty {
  display: none;
}

.form-error::before {
  content: "⚠";
  font-size: var(--font-size-base);
}

.form-notice {
  margin: var(--space-6) 0;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--brand-primary);
}

.form-notice p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.form-actions {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
}

.form-actions .btn-primary {
  min-width: 200px;
  padding: var(--space-5) var(--space-8);
  font-size: var(--font-size-lg);
}

/* === Enhanced Form Validation States === */
.form-group.loading .form-input {
  position: relative;
  background-image: linear-gradient(90deg, 
    var(--color-background) 25%, 
    var(--color-surface) 50%, 
    var(--color-background) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.form-group.success .form-input {
  border-color: var(--color-success);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-group.success .form-label::after {
  content: " ✓";
  color: var(--color-success);
}

/* === Step Actions === */
.step-actions {
  display: flex;
  justify-content: center;
  margin-top: var(--space-10);
  gap: var(--space-4);
}

/* === Utility Classes === */
.hidden {
  display: none !important;
}


/* === Responsive Design === */
@media (max-width: 768px) {
  .step-container {
    padding: var(--space-4);
  }
  
  .selection-card {
    padding: var(--space-6);
  }
  
  .results-toolbar {
    flex-direction: column;
    gap: var(--space-4);
    align-items: stretch;
  }
  
  .btn-primary, .btn-secondary {
    flex: 1;
  }
}

@media (max-width: 480px) {
  .selection-title {
    font-size: var(--font-size-xl);
  }
  
  .user-info-card {
    padding: var(--space-6);
  }
  
  .user-info-title {
    font-size: var(--font-size-xl);
  }
  
  .form-actions .btn-primary {
    min-width: 100%;
    padding: var(--space-4) var(--space-6);
  }
}

/* === Accessibility Enhancements === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-color-scheme: dark) {
  /* Dark mode would be implemented here if needed */
}

/* === Print Styles === */
@media print {
  .step-container {
    display: block !important;
    opacity: 1 !important;
    transform: none !important;
  }
  
  .btn-primary, .btn-secondary, .btn-link {
    display: none;
  }
  
  .step-header, .results-toolbar {
    display: none;
  }
}