/* Base Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', sans-serif;
  line-height: 1.47059;
  font-size: 17px;
}

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.header {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  border-bottom: 0.5px solid rgba(255, 255, 255, 0.12);
}
.nav { display: flex; justify-content: space-between; align-items: center; padding: 0; height: 48px; }
.logo { font-size: 21px; font-weight: 600; color: #ffffff; display: flex; align-items: center; }
.nav-links { display: flex; list-style: none; gap: 2rem; margin: 0; }
.nav-links a { text-decoration: none; color: rgba(255,255,255,0.8); font-size: 12px; font-weight: 400; letter-spacing: -0.01em; transition: all 0.3s ease; }
.nav-links a:hover { color: #00d4ff; opacity: 1; }

/* Buttons */
.btn { padding: 12px 22px; border: none; border-radius: 980px; font-size: 17px; cursor: pointer; transition: all 0.2s ease; text-decoration: none; display: inline-block; line-height: 1.23536; letter-spacing: -0.022em; }
.btn-primary { background: #1d1d1f; color: #fff; }
.btn-primary:hover { background: #404040; }
.btn-secondary { background: rgba(255,255,255,0.1); color: #fff; border: 1px solid rgba(255,255,255,0.3); backdrop-filter: blur(10px); }
.btn-secondary:hover { background: rgba(255,255,255,0.2); border-color: rgba(255,255,255,0.5); color: #fff; }

/* Section Title */
.section-title { text-align: center; font-size: 36px; line-height: 1.08349; font-weight: 600; letter-spacing: -0.003em; margin-bottom: 30px; color: #1d1d1f; }

/* Contact Modal */
.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); z-index: 2000; justify-content: center; align-items: center; backdrop-filter: blur(20px); }
.modal-content { background: white; padding: 40px; border-radius: 20px; text-align: center; max-width: 400px; width: 90%; position: relative; box-shadow: 0 25px 50px rgba(0,0,0,0.15); }
.modal-close { position: absolute; top: 20px; right: 24px; font-size: 22px; cursor: pointer; color: #86868b; transition: color 0.2s; font-weight: 300; }
.modal-close:hover { color: #1d1d1f; }
.modal-title { font-size: 28px; font-weight: 600; margin-bottom: 8px; color: #1d1d1f; }
.modal p { font-size: 17px; color: #86868b; margin-bottom: 30px; }
.modal-qr { margin: 30px 0 0 0; }
.modal-qr img { width: 200px; height: 200px; border-radius: 16px; }

/* Utilities */
.fade-in-up { animation: fadeInUp 0.6s ease-out; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
}