.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  font-size: var(--font-size-md);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  letter-spacing: 0.3px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #00D4FF 100%);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 12px rgba(62, 175, 255, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(62, 175, 255, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-primary);
}

.btn-success {
  background: linear-gradient(135deg, var(--color-success) 0%, #00cc6a 100%);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
}

.btn-success:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 255, 136, 0.4);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger) 0%, #cc3636 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 68, 68, 0.3);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 68, 68, 0.4);
}

.btn-warning {
  background: linear-gradient(135deg, var(--color-warning) 0%, #cc8800 100%);
  color: var(--color-text-inverse);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover:not(:disabled) {
  background: rgba(62, 175, 255, 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 14px 28px;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.input-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #b8c4d4;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--font-size-md);
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 3px rgba(62, 175, 255, 0.15);
}

.input:disabled {
  background: rgba(0, 0, 0, 0.4);
  opacity: 0.6;
  cursor: not-allowed;
}

.input.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(255, 68, 68, 0.15);
}

.input::placeholder {
  color: #4a5568;
}

.input-error {
  font-size: var(--font-size-sm);
  color: var(--color-danger);
  margin-top: 4px;
}

.input-lg {
  padding: 14px 18px;
  font-size: var(--font-size-lg);
}

.select {
  width: 100%;
  padding: 12px 16px;
  font-size: var(--font-size-md);
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238899aa' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(62, 175, 255, 0.15);
}

.select option {
  background-color: #001C3F;
  color: #eee;
  padding: 8px;
}

.textarea {
  padding: 12px 16px;
  font-size: var(--font-size-md);
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  resize: vertical;
  min-height: 100px;
  transition: all var(--transition-fast);
}

.textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(62, 175, 255, 0.15);
}

.checkbox, .radio {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  font-size: var(--font-size-md);
  color: var(--color-text);
}

.checkbox input, .radio input {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
}

.badge-primary {
  background: rgba(62, 175, 255, 0.15);
  color: var(--color-primary);
  border: 1px solid rgba(62, 175, 255, 0.3);
}

.badge-success {
  background: rgba(0, 255, 136, 0.15);
  color: var(--color-success);
  border: 1px solid rgba(0, 255, 136, 0.3);
}

.badge-danger {
  background: rgba(255, 68, 68, 0.15);
  color: var(--color-danger);
  border: 1px solid rgba(255, 68, 68, 0.3);
}

.badge-warning {
  background: rgba(255, 170, 0, 0.15);
  color: var(--color-warning);
  border: 1px solid rgba(255, 170, 0, 0.3);
}

.badge-info {
  background: rgba(62, 175, 255, 0.15);
  color: var(--color-info);
  border: 1px solid rgba(62, 175, 255, 0.3);
}

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  border: 1px solid;
}

.alert-success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--color-success);
  border-color: rgba(0, 255, 136, 0.3);
}

.alert-danger {
  background: rgba(255, 68, 68, 0.1);
  color: #ff6b6b;
  border-color: rgba(255, 68, 68, 0.3);
}

.alert-warning {
  background: rgba(255, 170, 0, 0.1);
  color: var(--color-warning);
  border-color: rgba(255, 170, 0, 0.3);
}

.alert-info {
  background: rgba(62, 175, 255, 0.1);
  color: var(--color-info);
  border-color: rgba(62, 175, 255, 0.3);
}

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.2);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.table th {
  background: rgba(0, 0, 0, 0.3);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table tbody tr {
  transition: background var(--transition-fast);
}

.table tbody tr:hover {
  background: rgba(62, 175, 255, 0.05);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table .text-right {
  text-align: right;
}

.table .text-center {
  text-align: center;
}

.tabs {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: var(--spacing-lg);
}

.tab {
  flex: 1;
  padding: 10px 20px;
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.tab:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.tab.active {
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 2px 8px rgba(62, 175, 255, 0.3);
}

.tab-content {
  display: none;
  animation: fadeIn var(--transition-fast);
}

.tab-content.active {
  display: block;
}

.login-box .tab-content {
  background-color: transparent;
}

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  animation: fadeIn var(--transition-fast);
}

.modal {
  background: linear-gradient(180deg, var(--color-bg-card) 0%, rgba(0, 24, 48, 0.98) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  animation: slideUp var(--transition-normal);
}

.modal-lg {
  max-width: 700px;
}

.modal-xl {
  max-width: 900px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: #fff;
  margin: 0;
}

.modal-close {
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner-lg {
  width: 60px;
  height: 60px;
  border-width: 4px;
}

.spinner-container {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.toast-container {
  position: fixed;
  top: calc(var(--header-height) + var(--spacing-md));
  right: var(--spacing-md);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  min-width: 320px;
  max-width: 420px;
  animation: slideIn var(--transition-normal);
  border: 1px solid var(--color-border);
}

.toast-success {
  border-left: 4px solid var(--color-success);
}

.toast-error {
  border-left: 4px solid var(--color-danger);
}

.toast-warning {
  border-left: 4px solid var(--color-warning);
}

.toast-info {
  border-left: 4px solid var(--color-info);
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: #fff;
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.toast-close {
  padding: 4px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
}

.toast-close:hover {
  color: #fff;
}

.progress {
  height: 8px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, #00D4FF 100%);
  transition: width var(--transition-normal);
  border-radius: var(--radius-full);
}

.progress-success .progress-bar {
  background: linear-gradient(90deg, var(--color-success) 0%, #00cc6a 100%);
}

.progress-danger .progress-bar {
  background: linear-gradient(90deg, var(--color-danger) 0%, #cc3636 100%);
}

.price-up {
  color: var(--color-success);
}

.price-down {
  color: var(--color-danger);
}

.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  color: var(--color-text-muted);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.empty-state p {
  font-size: var(--font-size-md);
}

.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 20, 40, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
}

.login-page {
  max-width: 560px;
  margin: 20px auto;
  padding: 0 20px;
  position: relative;
}

.login-page::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(62, 175, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 255, 136, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(62, 175, 255, 0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-header p {
  font-size: 15px;
  color: var(--color-text-muted);
}

.login-box {
  background: linear-gradient(180deg, var(--color-bg-card) 0%, rgba(0, 24, 48, 0.98) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  width: 100%;
  max-width: 42em;
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
}

.login-tabs {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 28px;
}

.login-tabs .tab {
  flex: 1;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.login-tabs .tab:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.login-tabs .tab.active {
  color: #fff;
  background: var(--color-primary);
  box-shadow: 0 2px 8px rgba(62, 175, 255, 0.3);
}

.login-form .input-group {
  margin-bottom: 18px;
}

.login-form .input-label {
  font-size: 12px;
  font-weight: 600;
  color: #b8c4d4;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.login-form .input {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.login-form .input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 3px rgba(62, 175, 255, 0.12);
}

.login-form .input::placeholder {
  color: #4a5568;
}

.login-form .select {
  width: 100%;
  padding: 14px 16px;
  font-size: 14px;
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238899aa' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.login-form .select option {
  background: var(--color-bg-card);
  color: #fff;
}

.login-form .radio-group {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
}

.login-form .radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #b8c4d4;
  cursor: pointer;
}

.login-form .radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.login-form .btn-primary {
  width: 100%;
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-inverse);
  background: linear-gradient(135deg, var(--color-primary) 0%, #00D4FF 100%);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(62, 175, 255, 0.3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.login-form .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(62, 175, 255, 0.4);
}

.login-form .btn-primary:active {
  transform: translateY(0);
}

.login-form .file-input-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-form .file-input-wrapper .btn-secondary {
  flex-shrink: 0;
}

.login-form .file-name {
  font-size: 13px;
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.login-form .alert {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  font-size: 14px;
}

.login-form .alert-danger {
  background: rgba(255, 68, 68, 0.12);
  border: 1px solid rgba(255, 68, 68, 0.25);
  color: #ff6b6b;
}

.login-footer {
  text-align: center;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.login-footer p {
  font-size: 13px;
  color: var(--color-text-muted);
}

.login-footer a {
  color: var(--color-primary);
  font-weight: 500;
}

.login-footer a:hover {
  text-decoration: underline;
}

.password-field-wrapper {
  display: flex;
  gap: 8px;
  align-items: center;
}

.password-field-wrapper .input {
  flex: 1;
  min-width: 200px;
  font-family: monospace;
}

/* Mobile login page */
@media (max-width: 575px) {
  .login-page {
    margin: 0;
    padding: var(--spacing-sm);
  }
  
  .login-box {
    padding: var(--spacing-md);
    border-radius: 0;
    width: 100%;
    max-width: 100%;
    min-width: auto;
  }
  
  .login-tabs .tab {
    padding: 10px 12px;
    font-size: 13px;
  }
  
  .login-form .input,
  .login-form .select {
    padding: 12px 14px;
  }
  
  .password-field-wrapper {
    flex-direction: column;
    align-items: stretch;
  }
  
  .password-field-wrapper .input {
    width: 100%;
    min-width: auto;
  }
}
  font-size: 13px;
  letter-spacing: 0.5px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-icon:active {
  transform: scale(0.95);
}

.login-form .alert-info {
  background: rgba(52, 152, 219, 0.12);
  border: 1px solid rgba(52, 152, 219, 0.25);
  color: #5dade2;
}

.login-form .alert-info a {
  color: #3498db;
  font-weight: 600;
}

.login-form .alert-info a:hover {
  text-decoration: underline;
}

.keys-grid {
  display: grid;
  gap: var(--spacing-md);
}

.key-item {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.key-label {
  margin-bottom: var(--spacing-sm);
}

.key-section {
  margin-top: var(--spacing-sm);
}

.key-display {
  font-family: var(--font-mono);
  font-size: 12px;
  word-break: break-all;
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

.key-display.clickable {
  cursor: pointer;
  transition: background-color 0.2s;
}

.key-display.clickable:hover {
  background: var(--bg-tertiary);
}

.key-display.private-key {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid rgba(231, 76, 60, 0.2);
  color: var(--color-warning);
}

.backup-screen {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.backup-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.backup-header svg {
  margin-bottom: var(--spacing-md);
}

.backup-header h2 {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: var(--font-size-xl);
}

.backup-header p {
  margin: 0;
}

.backup-section {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.backup-section h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: 0 0 var(--spacing-md) 0;
  font-size: var(--font-size-md);
  color: var(--color-text);
}

.backup-section h3 svg {
  color: var(--color-primary);
}

.password-display {
  padding: var(--spacing-md);
  background: var(--color-bg-hover);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  word-break: break-all;
  color: var(--color-primary);
  border: 1px solid var(--color-border-light);
}

.brainkey-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--color-bg-hover);
  border-radius: var(--radius-md);
}

.brainkey-word {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-card);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.word-index {
  color: var(--color-text-muted);
  font-size: 10px;
  min-width: 20px;
}

.backup-note {
  margin: var(--spacing-sm) 0 0 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.backup-warning {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(255, 68, 68, 0.08);
  border: 1px solid rgba(255, 68, 68, 0.3);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
}

.backup-warning svg {
  flex-shrink: 0;
  color: var(--color-danger);
}

.backup-warning strong {
  color: var(--color-danger);
}

.backup-warning ul {
  margin: var(--spacing-xs) 0 0 0;
  padding-left: var(--spacing-md);
  color: var(--color-text-secondary);
}

.backup-warning li {
  margin-bottom: 4px;
}

.backup-confirm {
  margin-bottom: var(--spacing-lg);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  cursor: pointer;
  padding: var(--spacing-sm);
  background: var(--color-bg-hover);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.checkbox-label span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.backup-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

.backup-actions .btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.backup-actions .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 575px) {
  .backup-screen {
    padding: var(--spacing-sm);
  }
  
  .brainkey-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .backup-actions {
    flex-direction: column;
  }
  
  .backup-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

.custom-select-container {
  width: 100%;
}

.custom-select {
  position: relative;
  width: 100%;
}

.custom-select-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 16px;
  font-size: var(--font-size-md);
  color: #fff;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.custom-select-trigger:hover {
  border-color: var(--color-primary);
}

.custom-select.open .custom-select-trigger {
  border-color: var(--color-primary);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.custom-select-value {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-select-arrow {
  flex-shrink: 0;
  color: #889aa8;
  transition: transform var(--transition-fast);
}

.custom-select.open .custom-select-arrow {
  transform: rotate(180deg);
}

.custom-select-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #001C3F;
  border: 1px solid var(--color-primary);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
}

.custom-select.open .custom-select-dropdown {
  display: block;
}

.custom-select-option {
  padding: 12px 16px;
  color: #eee;
  cursor: pointer;
  transition: background var(--transition-fast);
  word-break: break-all;
  font-size: var(--font-size-sm);
}

.custom-select-option:hover,
.custom-select-option.highlighted {
  background: var(--color-bg-hover);
}

.custom-select-option.selected {
  background: rgba(62, 175, 255, 0.15);
  color: var(--color-primary);
}

.custom-select-option.selected::before {
  content: "✓ ";
  font-size: 12px;
}

@media (max-width: 575px) {
  .custom-select-dropdown {
    max-height: 200px;
  }
  
  .custom-select-option {
    padding: 14px 16px;
  }
}