/* Calculator Layout */
.calculator-page {
  padding: var(--spacing-8) 0 var(--spacing-16);
}

.workspace-header {
  text-align: center;
  margin-bottom: var(--spacing-8);
}

.workspace-header h1 {
  margin-bottom: var(--spacing-2);
}

/* Tabs */
.tabs-container {
  max-width: 900px;
  margin: 0 auto;
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.tabs-nav {
  display: flex;
  background-color: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: var(--spacing-4);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-gray-500);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.tab-btn:hover, .tab-btn:focus {
  color: var(--color-navy-soft);
  background-color: var(--color-gray-100);
}

.tab-btn.active {
  color: var(--color-navy-soft);
  background-color: var(--color-white);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--color-gold);
}

.tab-content {
  display: none;
  padding: var(--spacing-6);
}

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

@media (min-width: 768px) {
  .tab-content {
    padding: var(--spacing-8);
  }
}

/* Calculator Header Actions */
.calc-actions-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

/* Course Rows - Grid Layout for Desktop, Stacked for Mobile */
.courses-container {
  margin-bottom: var(--spacing-6);
}

.course-row-header {
  display: none;
}

@media (min-width: 768px) {
  .course-row-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 40px;
    gap: var(--spacing-4);
    padding: 0 var(--spacing-4) var(--spacing-2);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-navy-soft);
    border-bottom: 2px solid var(--color-gray-200);
    margin-bottom: var(--spacing-4);
  }
}

.course-row {
  background-color: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  margin-bottom: var(--spacing-4);
  position: relative;
}

@media (min-width: 768px) {
  .course-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 40px;
    gap: var(--spacing-4);
    align-items: center;
    background-color: transparent;
    border: none;
    padding: 0;
    margin-bottom: var(--spacing-3);
  }
}

/* Mobile labels */
.mobile-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-1);
}

@media (min-width: 768px) {
  .mobile-label {
    display: none;
  }
}

.course-field {
  margin-bottom: var(--spacing-3);
}

@media (min-width: 768px) {
  .course-field {
    margin-bottom: 0;
  }
}

.readonly-display {
  padding: var(--spacing-2) var(--spacing-3);
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  color: var(--color-navy-dark);
  font-weight: 600;
  text-align: center;
  height: 42px; /* Match input height */
  display: flex;
  align-items: center;
  justify-content: center;
}

.remove-row-btn {
  position: absolute;
  top: var(--spacing-2);
  right: var(--spacing-2);
}

@media (min-width: 768px) {
  .remove-row-btn {
    position: static;
  }
}

.add-row-container {
  margin-bottom: var(--spacing-8);
}

/* Method Toggle (CGPA) */
.method-toggle {
  display: flex;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: var(--spacing-1);
  margin-bottom: var(--spacing-8);
}

.method-btn {
  flex: 1;
  background: none;
  border: none;
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-gray-600);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.method-btn.active {
  background-color: var(--color-white);
  color: var(--color-navy-soft);
  box-shadow: var(--shadow-sm);
}

/* CGPA Method Sections */
.cgpa-method-section {
  display: none;
}

.cgpa-method-section.active {
  display: block;
}

/* Result Panel */
.result-panel {
  background-color: var(--color-navy-soft);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.result-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--color-gold);
}

.result-score {
  margin: var(--spacing-4) 0;
}

.result-value {
  font-size: var(--text-5xl);
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
}

.result-scale {
  font-size: var(--text-xl);
  color: var(--color-gray-300);
}

.result-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-6);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: var(--text-xl);
  font-weight: 700;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-gray-300);
}

.result-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

/* Method 2 Specific Form */
.method2-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
  .method2-form {
    grid-template-columns: 1fr 1fr;
    background-color: var(--color-gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
  }
}

.method2-section h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-4);
  color: var(--color-navy-soft);
}

/* Print Styles */
@media print {
  .site-header, .site-footer, .hero, .tabs-nav, .add-row-container, 
  .remove-row-btn, .result-actions, .calc-actions-header, .method-toggle {
    display: none !important;
  }
  
  body {
    background-color: white;
  }
  
  .tabs-container {
    box-shadow: none;
    border: none;
  }
  
  .result-panel {
    background-color: white;
    color: black;
    border: 2px solid black;
    break-inside: avoid;
  }
  
  .result-value, .stat-item, .stat-label {
    color: black;
  }

  .result-panel::before {
    display: none;
  }
  
  /* Show headers on print */
  .course-row-header {
    display: grid !important;
  }
  
  .course-row {
    display: grid !important;
    border-bottom: 1px solid #ccc;
    margin-bottom: 0;
  }
  
  .mobile-label {
    display: none !important;
  }
  
  .course-field {
    margin-bottom: 0 !important;
  }
  
  .form-control, .readonly-display {
    border: none;
    background: transparent;
    padding: 0;
    height: auto;
  }
  
  .print-header {
    display: block !important;
    text-align: center;
    margin-bottom: 2rem;
  }
}

.print-header {
  display: none;
}