/* ===== BASIC RESPONSIVE PORTFOLIO ===== */
/* Basic CSS variables */
:root {
  --primary-color: #2563eb;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --text-color: #1e293b;
  --bg-color: #f8fafc;
  --white: #ffffff;
  --border-color: #e2e8f0;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --border-radius: 0.5rem;
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
/* Basic reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
}
/* ===== BASIC CONTAINER ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
/* ===== RESPONSIVE HEADER ===== */
.site-header {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-md) 0;
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}
.site-title {
  font-size: 1.5rem;
  font-weight: 700;
}
.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}
.main-nav a {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: background-color 0.2s;
}
.main-nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}
/* ===== SECTIONS ===== */
.hero-section {
  text-align: center;
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
  color: white;
  margin: var(--spacing-lg) 0;
  border-radius: var(--border-radius);
}
.hero-section h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}
.hero-section p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}
.projects-section {
  margin: var(--spacing-xl) 0;
}
.projects-section h2 {
  text-align: center;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-lg);
}
/* ===== PROJECTS GRID WITH FLEXBOX ===== */
.projects-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
}
.project-card {
  flex: 1;
  min-width: 300px;
  max-width: 400px;
  background: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s;
}
.project-card:hover {
  transform: translateY(-4px);
}
.project-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.project-info {
  padding: var(--spacing-md);
}
.project-info h3 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}
.project-info p {
  color: var(--secondary-color);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
}
/* ===== TAGS ===== */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag {
  background: var(--primary-color);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}
/* ===== CTA BUTTON ===== */
.cta-button {
  background: var(--accent-color);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: background-color 0.2s;
  display: inline-block;
}
.cta-button:hover {
  background: #d97706;
}
/* ===== MEDIA QUERIES ===== */
/* Tablet: 2 columns */
@media (min-width: 768px) {
  .projects-grid {
    justify-content: center;
  }
  .project-card {
    flex: 1;
    min-width: 280px;
    max-width: 350px;
  }
  .hero-section h2 {
    font-size: 1.5rem;
  }
}
/* Mobile: 1 column */
@media (max-width: 480px) {
  .site-header .container {
    flex-direction: column;
    text-align: center;
  }
  .main-nav ul {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  .site-title {
    font-size: 1.25rem;
  }
  .projects-grid {
    flex-direction: column;
    align-items: center;
  }
  .project-card {
    width: 100%;
    max-width: 100%;
  }
  .hero-section {
    padding: var(--spacing-lg) 0;
  }
  .hero-section h2 {
    font-size: 1.25rem;
  }
}
/* ===== BASIC TYPOGRAPHY ===== */
h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.2;
}
h1 {
  font-size: 1.5rem;
}
h2 {
  font-size: 1.75rem;
}
h3 {
  font-size: 1.125rem;
}
p {
  margin-bottom: var(--spacing-sm);
}
/* ===== FOOTER ===== */
.site-footer {
  background: var(--secondary-color);
  color: white;
  text-align: center;
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
}
/* ===== RESPONSIVE IMAGES ===== */
img {
  max-width: 100%;
  height: auto;
}
/* ===== UTILITIES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}