/* Performance-optimized CSS for better INP scores */

/* Use CSS containment to isolate layout calculations */
.gpa-calculator,
.study-planner,
.tutopiya-test-container {
  contain: layout style paint;
}

/* Optimize animations with will-change */
.tool-card,
.btn-action,
.floating-get-started-btn {
  will-change: transform;
}

/* Use transform instead of changing layout properties */
.tool-card:hover {
  transform: translateY(-4px);
  transition: transform 0.2s ease-out;
}

.btn-action:hover {
  transform: translateY(-1px);
  transition: transform 0.15s ease-out;
}

/* Optimize scrolling with smooth behavior */
html {
  scroll-behavior: smooth;
}

/* Use CSS Grid for better layout performance */
.tools-grid,
.benefits-grid,
.subjects-grid {
  display: grid;
  contain: layout;
}

/* Optimize form inputs */
input,
select,
textarea {
  contain: layout style;
  will-change: auto;
}

/* Use CSS custom properties for consistent values */
:root {
  --primary-color: #00afac;
  --secondary-color: #1447bd;
  --transition-fast: 0.15s ease-out;
  --transition-medium: 0.2s ease-out;
  --transition-slow: 0.3s ease-out;
}

/* Optimize button interactions */
.btn-action,
.btn-next,
.btn-prev,
.btn-reset {
  contain: layout style paint;
  transition: transform var(--transition-fast),
    background-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Optimize modal animations */
.modal-backdrop {
  contain: layout style paint;
  will-change: opacity;
}

.modal-content {
  contain: layout style;
  will-change: transform;
}

/* Optimize progress bars */
.progress-bar {
  contain: layout style;
  will-change: width;
  transition: width 0.3s ease-out;
}

/* Optimize card layouts */
.subject-card,
.tool-card,
.benefit-card {
  contain: layout style;
  will-change: transform, box-shadow;
}

/* Use CSS containment for complex components */
.calculator-container,
.courses-section,
.results-section {
  contain: layout style;
}

/* Optimize text rendering */
h1,
h2,
h3,
h4,
h5,
h6 {
  text-rendering: optimizeSpeed;
}

/* Optimize font loading */
@font-face {
  font-family: "Inter";
  font-display: swap;
}

/* Use CSS transforms for animations instead of changing layout properties */
.floating-get-started-btn:hover {
  transform: translateY(-3px) scale(1.02);
  transition: transform var(--transition-medium);
}

/* Optimize list rendering */
.course-row,
.paper-row {
  contain: layout style;
}

/* Use CSS Grid for responsive layouts */
@media (max-width: 768px) {
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* Optimize image loading */
img {
  image-rendering: optimizeSpeed;
  image-rendering: -webkit-optimize-contrast;
}

/* Use CSS containment for performance-critical sections */
.stepper,
.step-content,
.subjects-grid {
  contain: layout style;
}

/* Optimize dropdown animations */
.dropdown-menu {
  contain: layout style paint;
  will-change: opacity, transform;
}

/* Use CSS custom properties for consistent spacing */
:root {
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}

/* Optimize form layouts */
.form-group {
  contain: layout style;
}

/* Use CSS Grid for form layouts */
.course-row {
  display: grid;
  grid-template-columns: 4fr 1.2fr 1.8fr auto;
  gap: var(--spacing-md);
  align-items: center;
}

/* Optimize button groups */
.action-buttons,
.subject-actions {
  contain: layout style;
  display: flex;
  gap: var(--spacing-sm);
}

/* Use CSS containment for complex state changes */
.status-badge {
  contain: layout style paint;
  will-change: background-color;
}

/* Optimize progress indicators */
.stepper-progress {
  contain: layout style;
  will-change: width;
  transition: width 0.4s ease;
}

/* Use CSS custom properties for consistent colors */
:root {
  --color-primary: #00afac;
  --color-secondary: #1447bd;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-muted: #6b7280;
}

/* Optimize hover states */
.tool-card:hover,
.benefit-card:hover,
.usage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 175, 172, 0.15);
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium);
}

/* Use CSS containment for performance-critical animations */
.floating-get-started {
  contain: layout style paint;
  will-change: transform;
}

/* Optimize text selection */
::selection {
  background-color: var(--color-primary);
  color: white;
}

/* Use CSS custom properties for consistent border radius */
:root {
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
}

/* Optimize focus states */
input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(0, 175, 172, 0.2);
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

/* Use CSS containment for complex layouts */
.card-top-row,
.card-bottom-row {
  contain: layout style;
}

/* Optimize responsive design */
@media (max-width: 768px) {
  .course-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  .action-buttons {
    flex-direction: column;
  }
}

/* Use CSS custom properties for consistent shadows */
:root {
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

/* Optimize loading states */
.spinner {
  contain: layout style paint;
  will-change: transform;
  animation: spin 1s linear infinite;
}

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

/* Use CSS containment for performance-critical sections */
.progress-header,
.subjects-grid,
.stepper {
  contain: layout style;
}

/* Optimize complex animations */
.floating-get-started-btn {
  contain: layout style paint;
  will-change: transform, box-shadow;
  transition: transform var(--transition-medium),
    box-shadow var(--transition-medium);
}

/* Use CSS custom properties for consistent z-index values */
:root {
  --z-dropdown: 1000;
  --z-modal: 1050;
  --z-tooltip: 1100;
}

/* Optimize form validation states */
.form-control.is-valid {
  border-color: var(--color-success);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}

/* Use CSS containment for performance-critical components */
.gpa-calculator,
.study-planner,
.tutopiya-test-container {
  contain: layout style paint;
}

/* Optimize scroll performance */
.scroll-container {
  contain: layout style;
  overflow-y: auto;
  scroll-behavior: smooth;
}

/* Use CSS custom properties for consistent breakpoints */
:root {
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
}

/* Optimize complex layouts */
.benefits-grid,
.exam-boards-overview,
.steps-grid,
.features-grid,
.usage-grid {
  contain: layout style;
}

/* Use CSS containment for performance-critical animations */
.modal-backdrop,
.modal-content {
  contain: layout style paint;
}

/* Optimize button states */
.btn-action:active {
  transform: translateY(0);
  transition: transform var(--transition-fast);
}

/* Use CSS custom properties for consistent font sizes */
:root {
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
}