.tt-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 58px;
  background: rgba(15, 16, 21, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  justify-content: space-around;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 9999;
}
.tt-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 10px;
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease;
}
.tt-nav-item.active, .tt-nav-item:hover {
  color: #FFFFFF;
}
.tt-badge {
  position: absolute;
  top: -4px;
  right: -6px;
  background: var(--tt-accent, #FF004F);
  color: white;
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 10px;
}
.tt-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.tt-bottom-sheet {
  background: #161822;
  color: #fff;
  width: 100%;
  max-width: 520px;
  border-radius: 20px 20px 0 0;
  padding: 16px 20px 30px;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
  animation: slideUp 0.25s ease-out;
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}
.tt-sheet-handle {
  width: 40px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  margin: 0 auto 16px;
}
.tt-btn-primary {
  width: 100%;
  background: linear-gradient(135deg, #FF004F 0%, #E00045 100%);
  color: #fff;
  border: none;
  padding: 14px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 14px;
  cursor: pointer;
}