/*!
 * Material UI Components - Modular CSS Architecture
 * RK Groups Jekyll Site
 */

/* Import critical CSS inline (loaded in head) */
/* Critical styles are already loaded via _includes/critical-css.html */

/* Component imports - lazy loaded after critical path */
@import url('/assets/css/components/buttons.css');
@import url('/assets/css/components/cards.css');
@import url('/assets/css/components/navigation.css');
@import url('/assets/css/components/calculators.css');

/* Layout & Typography */
.mui-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.mui-container--fluid {
  max-width: none;
  width: 100%;
}

.mui-container--narrow {
  max-width: 800px;
}

/* Typography scale */
.mui-h1 { font-size: 2.5rem; font-weight: 700; line-height: 1.2; margin: 0 0 1rem 0; }
.mui-h2 { font-size: 2rem; font-weight: 600; line-height: 1.3; margin: 0 0 0.875rem 0; }
.mui-h3 { font-size: 1.75rem; font-weight: 600; line-height: 1.3; margin: 0 0 0.75rem 0; }
.mui-h4 { font-size: 1.5rem; font-weight: 600; line-height: 1.4; margin: 0 0 0.75rem 0; }
.mui-h5 { font-size: 1.25rem; font-weight: 600; line-height: 1.4; margin: 0 0 0.5rem 0; }
.mui-h6 { font-size: 1.125rem; font-weight: 600; line-height: 1.4; margin: 0 0 0.5rem 0; }

.mui-text-primary { color: var(--text-primary); }
.mui-text-secondary { color: var(--text-secondary); }
.mui-text-muted { color: var(--text-muted); }
.mui-text-accent { color: var(--accent-primary); }

/* Spacing utilities */
.mui-mt-0 { margin-top: 0; }
.mui-mt-1 { margin-top: 0.5rem; }
.mui-mt-2 { margin-top: 1rem; }
.mui-mt-3 { margin-top: 1.5rem; }
.mui-mt-4 { margin-top: 2rem; }

.mui-mb-0 { margin-bottom: 0; }
.mui-mb-1 { margin-bottom: 0.5rem; }
.mui-mb-2 { margin-bottom: 1rem; }
.mui-mb-3 { margin-bottom: 1.5rem; }
.mui-mb-4 { margin-bottom: 2rem; }

.mui-p-0 { padding: 0; }
.mui-p-1 { padding: 0.5rem; }
.mui-p-2 { padding: 1rem; }
.mui-p-3 { padding: 1.5rem; }
.mui-p-4 { padding: 2rem; }

/* Grid system */
.mui-grid {
  display: grid;
  gap: var(--mui-spacing);
}

.mui-grid-2 { grid-template-columns: repeat(2, 1fr); }
.mui-grid-3 { grid-template-columns: repeat(3, 1fr); }
.mui-grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .mui-grid-2,
  .mui-grid-3,
  .mui-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flexbox utilities */
.mui-flex { display: flex; }
.mui-flex-center { display: flex; align-items: center; justify-content: center; }
.mui-flex-between { display: flex; align-items: center; justify-content: space-between; }
.mui-flex-col { flex-direction: column; }
.mui-flex-wrap { flex-wrap: wrap; }
.mui-flex-gap { gap: var(--mui-spacing); }

/* Visibility utilities */
.mui-hidden { display: none; }
.mui-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Glass morphism utility */
.mui-glass {
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
}

/* Loading states */
.mui-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
  color: var(--text-secondary);
}

.mui-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border-primary);
  border-top: 2px solid var(--accent-primary);
  border-radius: 50%;
  animation: mui-spin 1s linear infinite;
}

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

/* Form elements */
.mui-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-primary);
  border-radius: var(--mui-radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.mui-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

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

.mui-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.875rem;
}

.mui-form-group {
  margin-bottom: 1.5rem;
}

/* Responsive design */
@media (max-width: 1024px) {
  .mui-container {
    padding: 0 0.75rem;
  }
}

@media (max-width: 768px) {
  .mui-h1 { font-size: 2rem; }
  .mui-h2 { font-size: 1.75rem; }
  .mui-h3 { font-size: 1.5rem; }
  
  .mui-container {
    padding: 0 0.5rem;
  }
}