/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f9f9fb;
  color: #333;
  line-height: 1.6;
}

/* Hero Homepage */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.title {
  font-size: 3.5rem;
  font-weight: 900;
  color: #000; /* BLACK TITLE */
  margin-bottom: 16px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.subtitle {
  font-size: 1.3rem;
  margin-bottom: 32px;
  opacity: 0.9;
}

/* Button */
.btn {
  display: inline-block;
  padding: 14px 32px;
  background: #000;
  color: white !important;
  text-decoration: none;
  font-weight: bold;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.btn:hover {
  background: #333;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.btn.back {
  background: #555;
  margin-top: 20px;
}

/* Page Header (About) */
.page-header {
  text-align: center;
  padding: 60px 20px;
  background: #fff;
}

.page-header .title {
  color: #000;
  font-size: 2.8rem;
}

/* Content */
.content {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
  text-align: center;
}

.content code {
  background: #eee;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

/* Responsive */
@media (max-width: 600px) {
  .title { font-size: 2.5rem; }
  .subtitle { font-size: 1.1rem; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
}