.topnav {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
  padding: 8px 16px;
  z-index: 1200;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

#topnav-logo {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: #1f2937;
  font-weight: 600;
  font-size: 16px;
}

.logo-icon {
  font-size: 20px;
}

.logo-subtitle {
  font-size: 11px;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
  white-space: nowrap;
  text-align: left;
}

.logo-subtitle a {
  color: #6b7280;
  text-decoration: none;
}

.logo-subtitle a:hover {
  color: #3b82f6;
  text-decoration: underline;
}

#topnav-content {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
}

/* Common item styles */
.topnav-item {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 2px;
  flex-shrink: 0;
}

.topnav-item > label {
  font-size: 10px;
  font-weight: 600;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
  white-space: nowrap;
}

.topnav-item .checkbox-wrapper {
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.topnav-item .timezone-name {
  height: 28px;
  display: flex;
  align-items: center;
}

.topnav-item input[type="checkbox"] {
  margin: 0;
  cursor: pointer;
}

/* Shared dropdown menu styles */
.dropdown-menu {
  position: fixed;
  top: 74px;
  display: none;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  z-index: 1201;
  overflow: hidden;
}

.dropdown-menu.open {
  display: flex;
  flex-direction: column;
  max-height: 400px;
}

.dropdown-menu .step-areas {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

.dropdown-btn {
  padding: 4px 12px 4px 8px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  background: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  min-width: 120px;
  transition: all 0.15s;
}

.dropdown-btn:hover {
  border-color: #9ca3af;
  background: #f9fafb;
}

.dropdown-value {
  flex: 1;
  font-size: 13px;
  color: #1f2937;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

.dropdown-arrow {
  font-size: 10px;
  color: #6b7280;
  transition: transform 0.2s;
}

/* Multiplier Selector */
.multiplier-selector {
  flex-shrink: 0;
}

.multiplier-options {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.multiplier-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.multiplier-row label {
  font-size: 13px;
  color: #374151;
  white-space: nowrap;
}

.multiplier-row .multiplier-input {
  width: 80px;
  padding: 4px 8px;
  border: 1px solid #d1d5db;
  border-radius: 4px;
  font-size: 13px;
  text-align: right;
}


/* Mobile Responsive */
@media (max-width: 1200px) {
  .topnav {
    flex-direction: column;
  }

  #topnav-logo {
    margin-bottom: 8px;
  }

  #topnav-content {
    width: 100%;
  }
}

@media (max-width: 768px) {
  #topnav-content {
    gap: 12px;
  }

  .dropdown-value {
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .dropdown-value {
    max-width: 80px;
  }
}

.export-btn {
  flex-shrink: 0;
}

.export-download-btn {
  padding: 4px 8px;
  justify-content: center;
  color: #4b5563;
  height: 28px;
  width: 40px;
}

.export-download-btn svg {
  margin-top: -1px;
}

.export-download-btn:hover {
  color: #1f2937;
}

.export-modal {
  position: fixed;
  background: white;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  width: 350px;
  max-width: calc(100vw - 32px);
  transform: translate(-50%, -50%);
  z-index: 1300;
  display: none;
}

.export-modal.open {
  display: block;
}

.export-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #e5e7eb;
}

.export-modal-header h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #1f2937;
}

.export-modal-body {
  padding: 16px;
}

.export-interval-selector {
  margin-bottom: 16px;
}

.export-interval-selector > label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.export-hint {
  font-size: 13px;
  color: #6b7280;
  margin: 0;
}

.export-modal-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 12px 16px;
  border-top: 1px solid #e5e7eb;
  background: #f9fafb;
  border-radius: 0 0 8px 8px;
}