/* CSS Variables */
:root {
  /* Pink palette */
  --pink-50: #FFF0F5;
  --pink-100: #FFE0EB;
  --pink-200: #FFB8D9;
  --pink-300: #FF8AC8;
  --pink-400: #F45D9E;
  --pink-500: #D23B80;
  
  /* Sage palette */
  --sage-200: #D4E6D5;
  --sage-300: #B5D4B7;
  --sage-400: #8AB68C;
  --sage-500: #6A9A6C;
  
  /* Neutral palette */
  --cream-50: #FFFEF5;
  --cream-100: #FFF9F0;
  
  /* Semantic colors */
  --text: #4a4a4a;
  --bg-primary: var(--pink-50);
  --bg-secondary: white;
  --accent-primary: var(--pink-400);
  --accent-secondary: var(--sage-400);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  
  /* Container */
  --container-max: 1200px;
  
  /* Animation */
  --transition: 0.2s ease;
}

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

/* Base styles */
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--accent-primary);
  color: white;
  z-index: 100;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Typography */
h1, h2, h3 {
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3rem);
  color: var(--accent-primary);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2rem);
  color: var(--accent-secondary);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--accent-primary);
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover,
a:focus {
  color: var(--accent-secondary);
  text-decoration: underline;
}

/* Focus styles */
:focus {
  outline: 3px solid var(--pink-300);
  outline-offset: 3px;
}

/* Header & Navigation */
header {
  background-color: var(--bg-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav {
  padding: var(--space-md) 0;
}

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

.logo {
  font-weight: bold;
  font-size: 1.25rem;
  color: var(--accent-primary);
}

.logo:hover,
.logo:focus {
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-sm);
  align-items: center;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-radius: 9999px;
  background-color: var(--sage-200);
  color: var(--text);
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a:focus {
  background-color: var(--pink-200);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.theme-toggle {
  background-color: var(--pink-300);
  border: none;
  color: white;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
}

.theme-toggle:hover,
.theme-toggle:focus {
  background-color: var(--pink-200);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.menu-toggle {
  display: none;
  background-color: var(--pink-300);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  position: relative;
  cursor: pointer;
  color: white;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.menu-toggle:hover,
.menu-toggle:focus {
  background-color: var(--pink-200);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Main content */
main {
  flex: 1;
  padding: var(--space-xxl) 0;
}

.intro {
  background-color: var(--bg-secondary);
  border-radius: 0.75rem;
  padding: var(--space-xl);
  margin-bottom: var(--space-xxl);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.projects {
  margin-bottom: var(--space-xxl);
}

.projects h2 {
  position: relative;
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
}

.projects h2::after {
  content: '';
  flex: 1;
  height: 1px;
  margin-left: var(--space-md);
  background-color: var(--sage-200);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.project {
  background-color: var(--bg-secondary);
  border-radius: 0.5rem;
  padding: var(--space-md);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition), box-shadow var(--transition);
}

.project:hover,
.project:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.08);
}

.project h3 {
  margin-bottom: var(--space-sm);
}

.project p {
  margin-bottom: var(--space-sm);
}

.project a {
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  transition: all var(--transition);
}

.project a:hover,
.project a:focus {
  transform: translateY(-2px);
}

.icon-small {
  width: 14px;
  height: 14px;
  margin-left: var(--space-xs);
}

/* Footer */
footer {
  background-color: var(--pink-100);
  padding: var(--space-xl);
  text-align: center;
}

.social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
  margin-bottom: var(--space-md);
}

.social-links li:not(:last-child)::after {
  content: "•";
  margin: 0 var(--space-xs);
}

/* Dark mode */
.dark-mode {
  --pink-50: #3A2A35;
  --pink-100: #59354B;
  --pink-200: #8E5773;
  --pink-300: #B47A93;
  --pink-400: #D7A1B8;
  --pink-500: #E9C3D3;
  --sage-200: #3D5D3E;
  --sage-300: #7BA97D;
  --sage-400: #5D8F5F;
  --text: #f7fafc;
  --bg-primary: #1a202c;
  --bg-secondary: #2d3748;
}

.dark-mode .projects h2::after {
  background: linear-gradient(to right, var(--pink-400), transparent);
}

/* Responsive design */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-md);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-top: 1px solid var(--pink-200);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    z-index: 100;
  }
  
  .nav-links.menu-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .nav-links li {
    width: 100%;
  }
  
  .nav-links a {
    display: flex;
    width: 100%;
    padding: var(--space-md);
    margin-bottom: var(--space-xs);
    transform: none;
  }
  
  .nav-links a:hover,
  .nav-links a:focus {
    transform: none;
    box-shadow: none;
    background-color: var(--pink-200);
  }
  
  .intro {
    padding: var(--space-lg);
  }
}

@media (min-width: 769px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .project-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}