/* --- CẤU HÌNH MÀU SẮC (Đồng bộ 100% với tool ký tự) --- */
  #cpfsb-word-counter {
    --cp-bg: #ffffff;
    --cp-border: #e2e8f0; 
    --cp-text: #262626;
    --cp-text-muted: #6b7280;
    --cp-primary: #0a0a0a;
    --cp-primary-hover: #262626;
    --cp-secondary-bg: #f3f4f6;
    --cp-radius: 12px;

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--cp-text);
    max-width: 900px;
    margin: 0 auto;

    background: var(--cp-bg);
    border: 1px solid var(--cp-border);
    border-radius: var(--cp-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    overflow: hidden;
  }

  /* --- 1. HEADER --- */
  #cpfsb-word-counter .cp-header {
    padding: 20px;
    background: #fafafa;
    border-bottom: 1px solid var(--cp-border);
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  #cpfsb-word-counter .cp-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  #cpfsb-word-counter .cp-stat-card {
    background: #ffffff;
    border: 1px solid var(--cp-border);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
  }

  #cpfsb-word-counter .cp-stat-val {
    font-size: 32px;
    font-weight: 700;
    color: var(--cp-primary);
    line-height: 1.1;
  }

  #cpfsb-word-counter .cp-stat-label {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--cp-text-muted);
    margin-top: 6px;
    letter-spacing: 0.5px;
  }

  #cpfsb-word-counter .cp-top-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
  }

  /* --- 2. TEXTAREA --- */
  #cpfsb-word-counter .cp-input-area {
    position: relative;
    background: #fff;
  }

  #cpfsb-word-counter .cp-textarea {
    width: 100%;
    min-height: 350px;
    padding: 20px;
    border: none;
    outline: none;
    resize: vertical;
    font-size: 17px;
    line-height: 1.6;
    color: var(--cp-text);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  }

  #cpfsb-word-counter .cp-textarea::placeholder { color: #d1d5db; }

  /* --- 3. BUTTONS / TOOLS --- */
  #cpfsb-word-counter .cp-tools-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 14px 20px;
    border-top: 1px solid var(--cp-border);
    background: #ffffff;
  }

  #cpfsb-word-counter .cp-btn {
    border: 1px solid var(--cp-border);
    background: #fff;
    color: var(--cp-text);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  #cpfsb-word-counter .cp-btn:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
  }

  #cpfsb-word-counter .cp-btn svg {
    width: 16px;
    height: 16px;
  }

  #cpfsb-word-counter .cp-btn-primary {
    background: var(--cp-primary);
    color: #fff;
    border-color: var(--cp-primary);
  }
  #cpfsb-word-counter .cp-btn-primary:hover {
    background: var(--cp-primary-hover);
    border-color: var(--cp-primary-hover);
  }

  #cpfsb-word-counter .cp-btn-secondary {
    background: var(--cp-secondary-bg);
  }

  #cpfsb-word-counter .cp-btn-danger {
    color: #ef4444;
    background: #fff;
    border-color: #fee2e2;
  }
  #cpfsb-word-counter .cp-btn-danger:hover {
    background: #fef2f2;
    border-color: #fca5a5;
  }

  /* --- 5. CHECKBOX & FOOTER --- */
#cpfsb-word-counter .cp-checkbox-group {
  width: 100%;
  margin-bottom: 8px;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 10px 16px;
display: flex;
}

  #cpfsb-word-counter .cp-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--cp-text);
    cursor: pointer;
  }

  #cpfsb-word-counter .cp-checkbox input {
    accent-color: var(--cp-primary);
    width: 16px;
    height: 16px;
  }

  #cpfsb-word-counter .cp-footer-stats {
    padding: 10px 20px;
    background: #f9fafb;
    border-top: 1px solid var(--cp-border);
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--cp-text-muted);
    flex-wrap: wrap;
    font-family: monospace;
  }

  #cpfsb-word-counter .cp-footer-stats b { color: var(--cp-primary); }

  /* Toast */
#cpfsb-word-counter .cp-toast {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--cp-primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 10;

  max-width: calc(100% - 24px);
  width: max-content;
  text-align: center;
  white-space: normal;
  word-break: break-word;
}

  #cpfsb-word-counter .cp-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }

  #cpfsb-word-counter .cp-toast.error { background: #ef4444; }

  /* Mobile */
  @media (max-width: 640px) {
    #cpfsb-word-counter .cp-stats-grid { gap: 8px; }
    #cpfsb-word-counter .cp-stat-card { padding: 10px; }
    #cpfsb-word-counter .cp-stat-val { font-size: 24px; }
    #cpfsb-word-counter .cp-top-actions { width: 100%; }
    #cpfsb-word-counter .cp-top-actions .cp-btn { flex: 1; }
    #cpfsb-word-counter .cp-checkbox-group {
  width: 100%;
  margin-bottom: 8px;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 10px 16px;
}
    #cpfsb-word-counter .cp-tools-row .cp-btn {
  flex: 1 1 calc(50% - 10px);
  white-space: normal;
  text-align: center;
  justify-content: center;
}
  }