/* Header Styles */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: linear-gradient(to bottom, rgba(11, 15, 22, 0.85), rgba(11, 15, 22, 0.35));
  border: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  border-radius: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.35), rgba(45, 212, 191, 0.2));
  border: 1px solid rgba(230, 237, 247, 0.16);
  box-shadow: 0 10px 30px var(--shadow);
  font-weight: 800;
  overflow: hidden;
  line-height: 1;
  font-size: 12px;
  box-sizing: border-box;
  padding: 0;
}

.brand-title {
  font-weight: 750;
  letter-spacing: 0.2px;
}

.brand-subtitle {
  font-size: 13px;
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-link {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
}

.nav-link:hover {
  border-color: var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

/* Responsive header */
@media (max-width: 820px) {
  .header {
    position: static;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}