/* Base styles and CSS Reset */
:root {
  /* Dynamic colors based on time */
  --color-intensity: 1;
  --bg-color: #ffffff;
  --text-color: #000000;
  --secondary-bg: #f5f5f5;
  --border-color: #e0e0e0;
  --hover-color: #f0f0f0;
  --transition: all 0.3s ease;
  
  /* Time-based adjustments will be handled in JS */
  --morning-intensity: 1;
  --afternoon-intensity: 0.95;
  --evening-intensity: 0.9;
  --night-intensity: 0.85;
}

[data-theme="dark"] {
  --bg-color: hsl(0, 0%, calc(7% * var(--color-intensity)));
  --text-color: hsl(0, 0%, calc(100% * var(--color-intensity)));
  --secondary-bg: hsl(0, 0%, calc(12% * var(--color-intensity)));
  --border-color: hsl(0, 0%, calc(20% * var(--color-intensity)));
  --hover-color: hsl(0, 0%, calc(16% * var(--color-intensity)));
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  transition: var(--transition);
}

/* Theme Toggle Button */
#theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  opacity: 0.7;
  transition: var(--transition);
}

#theme-toggle:hover {
  opacity: 1;
}

#theme-toggle svg {
  stroke: var(--text-color);
}

.sun-icon {
  display: none;
}

[data-theme="dark"] .moon-icon {
  display: none;
}

[data-theme="dark"] .sun-icon {
  display: block;
}

/* Layout */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 1.75rem;
  margin-top: 2.5rem;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--text-color);
  opacity: 0.8;
  margin-bottom: 2rem;
}

/* Navigation */
nav {
  margin: 2rem 0;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: var(--transition);
}

nav a:hover {
  opacity: 0.7;
}

/* Projects Grid */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.project-card {
  background: var(--secondary-bg);
  padding: 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-color);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-2px);
  background: var(--hover-color);
}

.project-card h3 {
  margin-bottom: 0.5rem;
}

.project-card p {
  opacity: 0.8;
}

/* Social Links */
.social-links, .contact-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.social-links a, .contact-links a {
  color: var(--text-color);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  transition: var(--transition);
}

.social-links a:hover, .contact-links a:hover {
  background: var(--hover-color);
}

/* Support Section */
.coffee-button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: var(--text-color);
  color: var(--bg-color);
  text-decoration: none;
  border-radius: 4px;
  transition: var(--transition);
}

.coffee-button:hover {
  opacity: 0.9;
}

/* Share Button */
.share {
  margin: 2rem 0;
}

#share-button {
  padding: 0.75rem 1.5rem;
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
}

#share-button:hover {
  background: var(--hover-color);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 600px) {
  h1 {
      font-size: 2rem;
  }

  nav ul {
      flex-direction: column;
      gap: 1rem;
  }

  .social-links, .contact-links {
      flex-direction: column;
  }

  .social-links a, .contact-links a {
      text-align: center;
  }
}