:root {
  --bg: #f4f6f8;
  --card-bg: #ffffff;
  --text-primary: #1f2933;
  --text-secondary: #6b7280;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
}

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

body {
  font-family: "Inter", sans-serif;
  background-color: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
}

/* Header */
.header {
  text-align: center;
  padding: 3rem 1.5rem 2rem;
}

.header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Projects Grid */
.projects {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding: 2rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

/* Card */
.card {
  background-color: var(--card-bg);
  padding: 1.75rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.card h2 {
  font-size: 1.25rem;
  font-weight: 600;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Button */
.card-link {
  margin-top: auto;
  align-self: flex-start;
  text-decoration: none;
  background-color: var(--accent);
  color: #fff;
  padding: 0.6rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background-color 0.2s ease;
}

.card-link:hover {
  background-color: var(--accent-hover);
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Desktop */
@media (min-width: 768px) {
  .projects {
    grid-template-columns: repeat(2, 1fr);
  }
}

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