:root {
  --primary: #667eea;
  --primary-strong: #764ba2;
  --text: #333;
  --muted: #666;
  --card-border: #e0e0e0;
  --bg-light: #f5f5f5;
}

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

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

a:hover {
  text-decoration: underline;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-light);
}

.page-centered {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-strong) 100%
  );
}

.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  background: white;
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.container-wide {
  max-width: 1200px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--text);
}

.gradient-text {
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-strong) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--muted);
  font-size: 1.2rem;
  margin-bottom: 30px;
}

.projects {
  margin-top: 30px;
}

.project-card {
  border: 2px solid var(--card-border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 15px;
  transition: all 0.3s ease;
}

.project-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.project-card h3 {
  color: var(--primary);
  margin-bottom: 8px;
}

.project-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.project-card a {
  display: inline-block;
  margin-top: 10px;
  font-weight: 500;
}

.status {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  background: #e7f0ff;
  color: #0066cc;
}

header {
  border-bottom: 3px solid var(--primary);
  padding-bottom: 20px;
  margin-bottom: 30px;
}

.back-link {
  display: inline-block;
  color: var(--primary);
  text-decoration: none;
  margin-bottom: 20px;
  font-weight: 500;
}

.back-link:hover {
  text-decoration: underline;
}

.content {
  margin-top: 30px;
}

.demo-box {
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-strong) 100%
  );
  color: white;
  padding: 40px;
  border-radius: 10px;
  text-align: center;
  margin: 20px 0;
}

.demo-box h2 {
  margin-bottom: 10px;
}

ul {
  margin: 16px 0 0 20px;
  color: var(--text);
}