@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');
@import './tokens.css';

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

.section {
  padding: var(--space-3xl) 0;
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-2xl) 0;
  }
}

.section-alt {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
}

/* Auto scroll-reveal for section titles */
.section-title,
.section-subtitle {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.section-title.visible,
.section-subtitle.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-subtitle {
  transition-delay: 0.1s;
}

/* Button styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  min-height: 44px;
  min-width: 44px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--surface-hover);
}

/* Code block */
.code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  overflow-x: auto;
  position: relative;
}

.code-block code {
  color: var(--text-secondary);
}

/* Card */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-border-strong);
  box-shadow: var(--shadow-lg);
}

@media (hover: none) {
  .card:hover {
    transform: none;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--accent-primary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 100;
  font-weight: 500;
}

.skip-link:focus {
  top: var(--space-md);
}