/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width-site);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
}

/* Glassmorphism Classes */
.glass-panel {
  background: var(--bg-dark-glass);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}

.glass-card {
  background: rgba(30, 30, 30, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 12px 40px var(--primary-glow);
}

/* Typography Helpers */
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.title-lg {
  font-family: var(--font-title);
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: 1.2;
}

.title-md {
  font-family: var(--font-title);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.3;
}

.title-sm {
  font-family: var(--font-title);
  font-size: var(--text-xl);
  font-weight: 500;
}

/* Section Spacing */
.section-padding {
  padding-top: var(--spacing-20);
  padding-bottom: var(--spacing-20);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  cursor: pointer;
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--text-dark);
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--primary-glow);
  filter: brightness(1.1);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-text {
  background: transparent;
  color: var(--primary);
  padding: 0;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
}

.btn-text:hover {
  color: var(--secondary);
}

.btn-text svg {
  transition: transform var(--transition-fast);
}

.btn-text:hover svg {
  transform: translateX(4px);
}

/* Utilities */
.text-center { text-align: center; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

/* SR Only Accessibility class */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}